HONEYCOMB-130: Separate v3po plugin from HC infra

Creating folders:
- common/
- infra/
- v3po/
- vpp-common/

Change-Id: I2c39e1b17e39e7c0f0628f44aa5fe08563fa06e4
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

24 files changed, 0 insertions, 1452 deletions

diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/MappingContext.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/MappingContext.java
deleted file mode 100644
index cff766e2a..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/MappingContext.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import com.google.common.base.Optional;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Mapping context is persisted storage where mapping matadata are stored.
- * A snapshot is created for each transaction to provide consistent view over context data.
- * After a transaction is successfully finished, objects added to this context are propagated to backing storage.
- */
-public interface MappingContext extends AutoCloseable {
-
-    /**
-     * Read any mapping context data
-     *
-     * @param currentId Id of an object to read
-     *
-     * @return Relevant mapping context data
-     */
-    <T extends DataObject> Optional<T> read(@Nonnull final InstanceIdentifier<T> currentId);
-
-    /**
-     * Delete the node at specified path.
-     *
-     * @param path Node path
-     */
-    void delete(InstanceIdentifier<?> path);
-
-    /**
-     * Merge the specified data with the currently-present data
-     * at specified path.
-     *
-     * @param path Node path
-     * @param data Data to be merged
-     */
-    <T extends DataObject> void merge(InstanceIdentifier<T> path, T data);
-
-    /**
-     * Replace the data at specified path with supplied data.
-     *
-     * @param path Node path
-     * @param data New node data
-     */
-    <T extends DataObject> void put(InstanceIdentifier<T> path, T data);
-
-    @Override
-    void close();
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModifiableSubtreeManagerRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModifiableSubtreeManagerRegistryBuilder.java
deleted file mode 100644
index 591a9e9bb..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModifiableSubtreeManagerRegistryBuilder.java
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import java.util.Collection;
-import java.util.Set;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Registry builder where {@link SubtreeManager}s can be added with or without relationships between them.
- * The relationships express what the order of execution should be.
- */
-public interface ModifiableSubtreeManagerRegistryBuilder<S extends SubtreeManager<? extends DataObject>> {
-
-    /**
-     * Add a handler responsible for writing only a single complex node.
-     */
-    ModifiableSubtreeManagerRegistryBuilder<S> add(@Nonnull S handler);
-
-    /**
-     * Add a handler responsible for writing multiple complex nodes within a subtree its responsible for. Identifiers for
-     * subtree nodes handled by a single handler have to be relative from {@link DataObject} that represents subtree
-     * root.
-     */
-    ModifiableSubtreeManagerRegistryBuilder<S> subtreeAdd(@Nonnull Set<InstanceIdentifier<?>> handledChildren,
-                                                          @Nonnull S handler);
-
-    /**
-     * Add a handler and make sure it will be executed before handler identifier by relatedType is executed.
-     */
-    ModifiableSubtreeManagerRegistryBuilder<S> addBefore(@Nonnull S handler,
-                                                         @Nonnull InstanceIdentifier<?> relatedType);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> addBefore(@Nonnull S handler,
-                                                         @Nonnull Collection<InstanceIdentifier<?>> relatedTypes);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> subtreeAddBefore(@Nonnull Set<InstanceIdentifier<?>> handledChildren,
-                                                                @Nonnull S handler,
-                                                                @Nonnull InstanceIdentifier<?> relatedType);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> subtreeAddBefore(@Nonnull Set<InstanceIdentifier<?>> handledChildren,
-                                                                @Nonnull S handler,
-                                                                @Nonnull Collection<InstanceIdentifier<?>> relatedTypes);
-
-    /**
-     * Add a handler and make sure it will be executed after handler identifier by relatedType is executed.
-     */
-    ModifiableSubtreeManagerRegistryBuilder<S> addAfter(@Nonnull S handler,
-                                                        @Nonnull InstanceIdentifier<?> relatedType);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> addAfter(@Nonnull S handler,
-                                                        @Nonnull Collection<InstanceIdentifier<?>> relatedTypes);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> subtreeAddAfter(@Nonnull Set<InstanceIdentifier<?>> handledChildren,
-                                                               @Nonnull S handler,
-                                                               @Nonnull InstanceIdentifier<?> relatedType);
-
-    ModifiableSubtreeManagerRegistryBuilder<S> subtreeAddAfter(@Nonnull Set<InstanceIdentifier<?>> handledChildren,
-                                                               @Nonnull S handler,
-                                                               @Nonnull Collection<InstanceIdentifier<?>> relatedTypes);
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationCache.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationCache.java
deleted file mode 100644
index cb2d4fde0..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationCache.java
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import com.google.common.collect.Maps;
-import java.util.HashMap;
-
-/**
- * Simple context class that provides transient storage during one or more read/write operations
- */
-public class ModificationCache implements AutoCloseable {
-
-    protected final HashMap<Object, Object> map;
-
-    public ModificationCache() {
-        map = Maps.newHashMap();
-    }
-
-    public Object get(final Object o) {
-        return map.get(o);
-    }
-
-    public boolean containsKey(final Object o) {
-        return map.containsKey(o);
-    }
-
-    public Object put(final Object o, final Object o2) {
-        return map.put(o, o2);
-    }
-
-    @Override
-    public void close() {
-        map.clear();
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationContext.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationContext.java
deleted file mode 100644
index 2c039aba0..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/ModificationContext.java
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import javax.annotation.Nonnull;
-
-/**
- * Common context for both writes and reads
- */
-public interface ModificationContext extends AutoCloseable {
-
-    /**
-     * Get key value transient storage for customizers. Is cleared for each new transaction.
-     *
-     * @return Context for customizers
-     */
-    @Nonnull
-    ModificationCache getModificationCache();
-
-    /**
-     * Get persistent storage for mapping context. This context survives a modification.
-     *
-     * @return Mapping context accessor
-     */
-    @Nonnull
-    MappingContext getMappingContext();
-
-    @Override
-    void close();
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManager.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManager.java
deleted file mode 100644
index 40842763d..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManager.java
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import com.google.common.annotations.Beta;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Base identifiable subtree manager(reader, writer etc.)
- *
- * @param <D> Specific DataObject derived type, that is managed by this manager
- */
-@Beta
-public interface SubtreeManager<D extends DataObject> {
-
-    /**
-     * Gets the type of node managed by this reader.
-     *
-     * @return Absolute instance identifier for managed type
-     */
-    @Nonnull
-    InstanceIdentifier<D> getManagedDataObjectType();
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManagerRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManagerRegistryBuilder.java
deleted file mode 100644
index 2434deddb..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/SubtreeManagerRegistryBuilder.java
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-public interface SubtreeManagerRegistryBuilder<R> {
-
-    R build();
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/TranslationException.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/TranslationException.java
deleted file mode 100644
index ee0049977..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/TranslationException.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate;
-
-import com.google.common.annotations.Beta;
-
-/**
- * Base exception for the translation layer
- */
-@Beta
-public class TranslationException extends Exception {
-
-    public TranslationException(final String s) {
-        super(s);
-    }
-
-    public TranslationException(final String s, final Throwable cause) {
-        super(s, cause);
-    }
-
-    public TranslationException(final Throwable cause) {
-        super(cause);
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ListReader.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ListReader.java
deleted file mode 100644
index 13a7a55da..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ListReader.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read;
-
-import com.google.common.annotations.Beta;
-import java.util.Collections;
-import java.util.List;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.concepts.Builder;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.Identifiable;
-import org.opendaylight.yangtools.yang.binding.Identifier;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * List reader, allowing read of all the elements.
- *
- * @param <D> Specific DataObject derived type, that is handled by this reader
- */
-@Beta
-public interface ListReader
-        <D extends DataObject & Identifiable<K>, K extends Identifier<D>, B extends Builder<D>> extends Reader<D, B> {
-
-    /**
-     * Read all elements in this list.
-     *
-     * @param id Wildcarded identifier of list managed by this reader
-     * @param ctx Read context
-     *
-     * @return List of all entries in this list
-     * @throws ReadFailedException if read was unsuccessful
-     */
-    @Nonnull
-    List<D> readList(@Nonnull final InstanceIdentifier<D> id, @Nonnull final ReadContext ctx)
-            throws ReadFailedException;
-
-    /**
-     * Get IDs for all entries in the list.
-     */
-    List<K> getAllIds(@Nonnull InstanceIdentifier<D> id, @Nonnull ReadContext ctx)
-            throws ReadFailedException;
-
-    /**
-     * Merge read data into provided parent builder.
-     */
-    void merge(@Nonnull final Builder<? extends DataObject> builder, @Nonnull final List<D> readData);
-
-    @Override
-    default void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final D readValue) {
-        merge(parentBuilder, Collections.singletonList(readValue));
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadContext.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadContext.java
deleted file mode 100644
index e3ddd420c..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadContext.java
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read;
-
-import io.fd.honeycomb.v3po.translate.ModificationContext;
-
-/**
- * Context providing information about current state of DataTree to readers
- */
-public interface ReadContext extends ModificationContext {
-
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadFailedException.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadFailedException.java
deleted file mode 100644
index 51d4fcb5a..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReadFailedException.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import io.fd.honeycomb.v3po.translate.TranslationException;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Thrown when a reader or customizer is not able to read data for the given id.
- */
-public class ReadFailedException extends TranslationException {
-
-    private final InstanceIdentifier<?> failedId;
-
-    /**
-     * Constructs an ReadFailedException given data id and exception cause.
-     *
-     * @param failedId instance identifier of the data object that could not be read
-     * @param cause              the cause of read failure
-     */
-    public ReadFailedException(@Nonnull final InstanceIdentifier<?> failedId, final Throwable cause) {
-        super("Failed to read " + failedId, cause);
-        this.failedId = checkNotNull(failedId, "failedId should not be null");
-    }
-
-    /**
-     * Constructs an ReadFailedException given data id.
-     *
-     * @param failedId instance identifier of the data object that could not be read
-     */
-    public ReadFailedException(@Nonnull final InstanceIdentifier<?> failedId) {
-        this(failedId, null);
-    }
-
-    /**
-     * Returns id of the data object that could not be read.
-     *
-     * @return data object instance identifier
-     */
-    @Nonnull
-    public InstanceIdentifier<?> getFailedId() {
-        return failedId;
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/Reader.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/Reader.java
deleted file mode 100644
index d0bf0dea1..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/Reader.java
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read;
-
-import com.google.common.annotations.Beta;
-import com.google.common.base.Optional;
-import io.fd.honeycomb.v3po.translate.SubtreeManager;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.concepts.Builder;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Base reader, responsible for translation between DataObjects and any other side.
- *
- * @param <D> Specific DataObject derived type, that is handled by this reader
- */
-@Beta
-public interface Reader<D extends DataObject, B extends Builder<D>> extends SubtreeManager<D> {
-
-    // TODO make async
-
-    /**
-     * Reads data identified by id
-     *
-     * @param id unique identifier of subtree to be read. The subtree must contain managed data object type. For
-     *           identifiers pointing below node managed by this reader, it's reader's responsibility to filter out the
-     *           right node or to delegate the read to a child reader.
-     * @param ctx Read context
-     *
-     * @return List of DataObjects identified by id. If the ID points to a single node, it will be wrapped in a list
-     * @throws ReadFailedException if read was unsuccessful
-     */
-    @Nonnull
-    Optional<? extends DataObject> read(@Nonnull InstanceIdentifier<? extends DataObject> id,
-                                        @Nonnull ReadContext ctx) throws ReadFailedException;
-
-    /**
-     * Fill in current node's attributes
-     *
-     * @param id {@link InstanceIdentifier} pointing to current node. In case of keyed list, key must be present.
-     * @param builder Builder object for current node where the read attributes must be placed
-     * @param ctx Current read context
-     */
-    void readCurrentAttributes(@Nonnull InstanceIdentifier<D> id,
-                               @Nonnull B builder,
-                               @Nonnull ReadContext ctx) throws ReadFailedException;
-
-    /**
-     * Return new instance of a builder object for current node
-     *
-     * @param id {@link InstanceIdentifier} pointing to current node. In case of keyed list, key must be present.
-     * @return Builder object for current node type
-     */
-    @Nonnull
-    B getBuilder(InstanceIdentifier<D> id);
-
-    /**
-     * Merge read data into provided parent builder.
-     */
-    void merge(@Nonnull final Builder<? extends DataObject> parentBuilder, @Nonnull final D readValue);
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReaderFactory.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReaderFactory.java
deleted file mode 100644
index 61472f8d2..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/ReaderFactory.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.read.registry.ModifiableReaderRegistryBuilder;
-import javax.annotation.Nonnull;
-
-/**
- * Factory producing readers for {@link ModifiableReaderRegistryBuilder}.
- */
-@Beta
-public interface ReaderFactory extends AutoCloseable {
-
-    /**
-     * Initialize 1 or more readers and add them to provided registry.
-     */
-    void init(@Nonnull ModifiableReaderRegistryBuilder registry);
-
-    @Override
-    default void close() {
-        // NOOP TODO allow unregister
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ModifiableReaderRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ModifiableReaderRegistryBuilder.java
deleted file mode 100644
index c2eba4f72..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ModifiableReaderRegistryBuilder.java
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read.registry;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.ModifiableSubtreeManagerRegistryBuilder;
-import io.fd.honeycomb.v3po.translate.read.Reader;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.concepts.Builder;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Mutable registry that allows adding new readers.
- */
-@Beta
-public interface ModifiableReaderRegistryBuilder
-        extends ModifiableSubtreeManagerRegistryBuilder<Reader<? extends DataObject, ? extends Builder<?>>> {
-
-    // TODO we should be able to add structural/reflexive readers automatically in the registry builder, we just need builder class
-    // We would need generated class loading strategy instance and then load builder classes relying on naming + package conventions of Binding spec
-    /**
-     * Add a structural reader that performs no read operation on its own, just fills in the hierarchy.
-     */
-    <D extends DataObject> void addStructuralReader(@Nonnull InstanceIdentifier<D> id,
-                                                    @Nonnull Class<? extends Builder<D>> builderType);
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistry.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistry.java
deleted file mode 100644
index 308ec238d..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistry.java
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read.registry;
-
-import com.google.common.annotations.Beta;
-import com.google.common.base.Optional;
-import com.google.common.collect.Multimap;
-import io.fd.honeycomb.v3po.translate.read.ReadContext;
-import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Simple delegating reader suitable as a holder for all other root readers, providing readAll feature.
- */
-@Beta
-public interface ReaderRegistry {
-
-    /**
-     * Performs read on all registered root readers and merges the results into a Multimap. Keys represent identifiers
-     * for root DataObjects from the data tree modeled by YANG.
-     *
-     * @param ctx Read context
-     *
-     * @return multimap that preserves deterministic iteration order across non-distinct key values
-     * @throws ReadFailedException if read was unsuccessful
-     */
-    @Nonnull
-    Multimap<InstanceIdentifier<? extends DataObject>, ? extends DataObject> readAll(@Nonnull final ReadContext ctx)
-            throws ReadFailedException;
-
-    /**
-     * Reads data identified by id.
-     *
-     * @param id unique identifier of subtree to be read. The subtree must contain managed data object type. For
-     *           identifiers pointing below node managed by this reader, it's reader's responsibility to filter out the
-     *           right node or to delegate the read to a child reader.
-     * @param ctx Read context
-     *
-     * @return List of DataObjects identified by id. If the ID points to a single node, it will be wrapped in a list
-     * @throws ReadFailedException if read was unsuccessful
-     */
-    @Nonnull
-    Optional<? extends DataObject> read(@Nonnull InstanceIdentifier<? extends DataObject> id,
-                                        @Nonnull ReadContext ctx)
-            throws ReadFailedException;
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistryBuilder.java
deleted file mode 100644
index ff95d6248..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/read/registry/ReaderRegistryBuilder.java
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.read.registry;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.SubtreeManagerRegistryBuilder;
-
-/**
- * Builder for reader registries.
- */
-@Beta
-public interface ReaderRegistryBuilder extends SubtreeManagerRegistryBuilder<ReaderRegistry> {
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/DataObjectUpdate.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/DataObjectUpdate.java
deleted file mode 100644
index 0d891ecba..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/DataObjectUpdate.java
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import static com.google.common.base.Preconditions.checkArgument;
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Simple wrapper for BA id + data before and after state. Does not allow both before and after to be null.
- */
-public class DataObjectUpdate {
-
-    @Nonnull
-    private final InstanceIdentifier<?> id;
-    @Nullable
-    private final DataObject dataBefore;
-    @Nullable
-    private final DataObject dataAfter;
-
-    private DataObjectUpdate(@Nonnull final InstanceIdentifier<?> id,
-                             @Nullable final DataObject dataBefore,
-                             @Nullable final DataObject dataAfter) {
-        this.id = checkNotNull(id);
-        this.dataAfter = dataAfter;
-        this.dataBefore = dataBefore;
-    }
-
-    public DataObject getDataBefore() {
-        return dataBefore;
-    }
-
-    public DataObject getDataAfter() {
-        return dataAfter;
-    }
-
-    public InstanceIdentifier<?> getId() {
-        return id;
-    }
-
-    public static DataObjectUpdate create(@Nonnull final InstanceIdentifier<?> id,
-                                    @Nullable final DataObject dataBefore,
-                                    @Nullable final DataObject dataAfter) {
-        checkArgument(!(dataBefore == null && dataAfter == null), "Both before and after data are null");
-        if (dataBefore != null) {
-            checkArgument(id.getTargetType().isAssignableFrom(dataBefore.getClass()));
-        }
-        if (dataAfter != null) {
-            checkArgument(id.getTargetType().isAssignableFrom(dataAfter.getClass()));
-        }
-
-        return dataAfter == null
-                ? new DataObjectDelete(id, dataBefore)
-                : new DataObjectUpdate(id, dataBefore, dataAfter);
-    }
-
-    @Override
-    public boolean equals(final Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-
-        final DataObjectUpdate that = (DataObjectUpdate) o;
-
-        return id.equals(that.id);
-
-    }
-
-    @Override
-    public int hashCode() {
-        return id.hashCode();
-    }
-
-    @Override
-    public String toString() {
-        return "DataObjectUpdate{" + "id=" + id
-                + ", dataBefore=" + dataBefore
-                + ", dataAfter=" + dataAfter
-                + '}';
-    }
-
-    public DataObjectUpdate reverse() {
-        return DataObjectUpdate.create(id, dataAfter, dataBefore);
-    }
-
-    public static class DataObjectDelete extends DataObjectUpdate {
-
-        private DataObjectDelete(@Nonnull final InstanceIdentifier<?> id,
-                                 @Nullable final DataObject dataBefore) {
-            super(id, dataBefore, null);
-        }
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/ListWriter.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/ListWriter.java
deleted file mode 100644
index f29289d2d..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/ListWriter.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import com.google.common.annotations.Beta;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.Identifiable;
-import org.opendaylight.yangtools.yang.binding.Identifier;
-
-/**
- * List writer, responsible for translation between a list of DataObjects and any other side.
- * Handling all update operations(create, update, delete)
- *
- * @param <D> Specific DataObject derived type, that is handled by this writer
- * @param <K> Identifier/key for D
- */
-@Beta
-public interface ListWriter<D extends DataObject & Identifiable<K>, K extends Identifier<D>> extends Writer<D> {
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteContext.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteContext.java
deleted file mode 100644
index 3433b3f34..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteContext.java
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import com.google.common.annotations.Beta;
-import com.google.common.base.Optional;
-import io.fd.honeycomb.v3po.translate.ModificationContext;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Context providing information about current state of DataTree to writers
- */
-@Beta
-public interface WriteContext extends ModificationContext {
-
-    /**
-     * Read any config data object before current modification was applied
-     *
-     * @param currentId Id of an object to read
-     *
-     * @return Data before the modification was applied
-     */
-    <T extends DataObject> Optional<T> readBefore(@Nonnull final InstanceIdentifier<T> currentId);
-
-    /**
-     * Read any config data object from current modification
-     *
-     * @param currentId Id of an object to read
-     *
-     * @return Data from the modification
-     */
-    <T extends DataObject> Optional<T> readAfter(@Nonnull final InstanceIdentifier<T> currentId);
-
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteFailedException.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteFailedException.java
deleted file mode 100644
index 10a664fcf..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriteFailedException.java
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import io.fd.honeycomb.v3po.translate.TranslationException;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Thrown when a writer or customizer is not able to write/update/delete data .
- */
-public class WriteFailedException extends TranslationException {
-
-    private final InstanceIdentifier<?> failedId;
-
-    /**
-     * Constructs an WriteFailedException given data id, exception detail message and exception cause.
-     *
-     * @param failedId instance identifier of the data object that could not be read
-     * @param cause    the cause of read failure
-     * @param message  the exception detail message
-     */
-    public WriteFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                @Nonnull final String message,
-                                @Nonnull final Throwable cause) {
-        super(message, cause);
-        this.failedId = checkNotNull(failedId, "failedId should not be null");
-    }
-
-    /**
-     * Constructs an WriteFailedException given data id.
-     *
-     * @param failedId instance identifier of the data object that could not be written
-     */
-    public WriteFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                @Nonnull final String message) {
-        super(message);
-        this.failedId = checkNotNull(failedId, "failedId should not be null");
-    }
-
-    /**
-     * Constructs an WriteFailedException given data id and exception cause.
-     *
-     * @param failedId instance identifier of the data object that could not be read
-     * @param cause    the cause of read failure
-     */
-    public WriteFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                @Nonnull final Throwable cause) {
-        super(cause);
-        this.failedId = checkNotNull(failedId, "failedId should not be null");
-    }
-
-    /**
-     * Returns id of the data object that could not be written.
-     *
-     * @return data object instance identifier
-     */
-    @Nonnull
-    public InstanceIdentifier<?> getFailedId() {
-        return failedId;
-    }
-
-
-    /**
-     * Delete specific write failed exception
-     */
-    public static class DeleteFailedException extends WriteFailedException {
-
-        public DeleteFailedException(@Nonnull final InstanceIdentifier<?> failedId, @Nonnull final Throwable cause) {
-            super(failedId, getMsg(failedId), cause);
-        }
-
-        private static String getMsg(@Nonnull final InstanceIdentifier<?> failedId) {
-            return String.format("Failed to delete data at: %s", failedId);
-        }
-
-        public DeleteFailedException(@Nonnull final InstanceIdentifier<?> failedId) {
-            super(failedId, getMsg(failedId));
-        }
-    }
-
-    /**
-     * Create specific write failed exception
-     */
-    public static class CreateFailedException extends WriteFailedException {
-
-        private final DataObject data;
-
-        public CreateFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                     @Nonnull final DataObject data,
-                                     @Nonnull final Throwable cause) {
-            super(failedId, getMsg(failedId, data), cause);
-            this.data = checkNotNull(data, "data");
-        }
-
-        private static String getMsg(final @Nonnull InstanceIdentifier<?> failedId, final DataObject data) {
-            return String.format("Failed to create data: %s at: %s", data, failedId);
-        }
-
-        public CreateFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                     @Nonnull final DataObject data) {
-            super(failedId, getMsg(failedId, data));
-            this.data = checkNotNull(data, "data");
-        }
-
-        public DataObject getData() {
-            return data;
-        }
-    }
-
-    /**
-     * Update specific write failed exception
-     */
-    public static class UpdateFailedException extends WriteFailedException {
-
-        private final DataObject dataBefore;
-        private final DataObject dataAfter;
-
-        public UpdateFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                     @Nonnull final DataObject dataBefore,
-                                     @Nonnull final DataObject dataAfter,
-                                     @Nonnull final Throwable cause) {
-            super(failedId, getMsg(failedId, dataBefore, dataAfter), cause);
-            this.dataBefore = checkNotNull(dataBefore, "dataBefore");
-            this.dataAfter = checkNotNull(dataAfter, "dataAfter");
-        }
-
-        private static String getMsg(final @Nonnull InstanceIdentifier<?> failedId, final DataObject dataBefore,
-                                     final DataObject dataAfter) {
-            return String.format("Failed to update data from: %s to: %s, at: %s", dataBefore, dataAfter, failedId);
-        }
-
-        public UpdateFailedException(@Nonnull final InstanceIdentifier<?> failedId,
-                                     @Nonnull final DataObject dataBefore,
-                                     @Nonnull final DataObject dataAfter) {
-            super(failedId, getMsg(failedId, dataBefore, dataAfter));
-            this.dataBefore = checkNotNull(dataBefore, "dataBefore");
-            this.dataAfter = checkNotNull(dataAfter, "dataAfter");
-        }
-
-        public DataObject getDataBefore() {
-            return dataBefore;
-        }
-
-        public DataObject getDataAfter() {
-            return dataAfter;
-        }
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/Writer.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/Writer.java
deleted file mode 100644
index 77abe341c..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/Writer.java
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.SubtreeManager;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Base writer, responsible for translation between DataObjects and any other side. Handling all update operations(create,
- * update, delete)
- *
- * @param <D> Specific DataObject derived type, that is handled by this writer
- */
-@Beta
-public interface Writer<D extends DataObject> extends SubtreeManager<D> {
-
-    /**
-     * Handle update operation. U from CRUD.
-     *
-     * @param id         Identifier of data being written
-     * @param dataBefore Old data
-     * @param dataAfter  New, updated data
-     * @param ctx        Write context enabling writer to get information about candidate data as well as current data
-     * @throws WriteFailedException if update failed
-     */
-    void update(@Nonnull final InstanceIdentifier<? extends DataObject> id,
-                @Nullable final DataObject dataBefore,
-                @Nullable final DataObject dataAfter,
-                @Nonnull final WriteContext ctx) throws WriteFailedException;
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriterFactory.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriterFactory.java
deleted file mode 100644
index ffc76a0e4..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/WriterFactory.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.write.registry.ModifiableWriterRegistryBuilder;
-import javax.annotation.Nonnull;
-
-/**
- * Factory producing writers for {@link ModifiableWriterRegistryBuilder}.
- */
-@Beta
-public interface WriterFactory extends AutoCloseable {
-
-    /**
-     * Initialize 1 or more writers and add them to provided registry.
-     */
-    void init(@Nonnull ModifiableWriterRegistryBuilder registry);
-
-    @Override
-    default void close() {
-        // NOOP TODO allow unregister
-    }
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/ModifiableWriterRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/ModifiableWriterRegistryBuilder.java
deleted file mode 100644
index 8670a5059..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/ModifiableWriterRegistryBuilder.java
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write.registry;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.ModifiableSubtreeManagerRegistryBuilder;
-import io.fd.honeycomb.v3po.translate.write.Writer;
-import org.opendaylight.yangtools.yang.binding.DataObject;
-
-/**
- * Mutable registry that allows adding new writers.
- */
-@Beta
-public interface ModifiableWriterRegistryBuilder
-        extends ModifiableSubtreeManagerRegistryBuilder<Writer<? extends DataObject>> {
-
-}
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistry.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistry.java
deleted file mode 100644
index 439a85410..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistry.java
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write.registry;
-
-import static com.google.common.base.Preconditions.checkNotNull;
-
-import com.google.common.annotations.Beta;
-import com.google.common.collect.ImmutableSet;
-import com.google.common.collect.Multimap;
-import com.google.common.collect.Sets;
-import io.fd.honeycomb.v3po.translate.TranslationException;
-import io.fd.honeycomb.v3po.translate.write.DataObjectUpdate;
-import io.fd.honeycomb.v3po.translate.write.WriteContext;
-import io.fd.honeycomb.v3po.translate.write.Writer;
-import java.util.Set;
-import javax.annotation.Nonnull;
-import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
-
-/**
- * Special {@link Writer} capable of performing bulk updates.
- */
-@Beta
-public interface WriterRegistry {
-
-    /**
-     * Performs bulk update.
-     *
-     * @throws BulkUpdateException in case bulk update fails
-     * @throws TranslationException in case some other error occurs while processing update request
-     */
-    void update(@Nonnull DataObjectUpdates updates,
-                @Nonnull WriteContext ctx) throws TranslationException;
-
-    /**
-     * Simple DTO containing updates for {@link WriterRegistry}. Currently only deletes and updates (create + update)
-     * are distinguished.
-     */
-    @Beta
-    final class DataObjectUpdates {
-
-        private final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates;
-        private final Multimap<InstanceIdentifier<?>, DataObjectUpdate.DataObjectDelete> deletes;
-
-        /**
-         * Create new instance.
-         *
-         * @param updates All updates indexed by their unkeyed {@link InstanceIdentifier}
-         * @param deletes All deletes indexed by their unkeyed {@link InstanceIdentifier}
-         */
-        public DataObjectUpdates(@Nonnull final Multimap<InstanceIdentifier<?>, DataObjectUpdate> updates,
-                                 @Nonnull final Multimap<InstanceIdentifier<?>, DataObjectUpdate.DataObjectDelete> deletes) {
-            this.deletes = deletes;
-            this.updates = updates;
-        }
-
-        public Multimap<InstanceIdentifier<?>, DataObjectUpdate> getUpdates() {
-            return updates;
-        }
-
-        public Multimap<InstanceIdentifier<?>, DataObjectUpdate.DataObjectDelete> getDeletes() {
-            return deletes;
-        }
-
-        public boolean isEmpty() {
-            return updates.isEmpty() && deletes.isEmpty();
-        }
-
-        @Override
-        public String toString() {
-            return "DataObjectUpdates{" + "updates=" + updates + ", deletes=" + deletes + '}';
-        }
-
-        /**
-         * Get a {@link Set} containing all update types from both updates as well as deletes.
-         */
-        public Set<InstanceIdentifier<?>> getTypeIntersection() {
-            return Sets.union(deletes.keySet(), updates.keySet());
-        }
-
-        /**
-         * Check whether there is only a single type of data object to be updated.
-         *
-         * @return true if there is only a single type of updates (update + delete)
-         */
-        public boolean containsOnlySingleType() {
-            return getTypeIntersection().size() == 1;
-        }
-
-        @Override
-        public boolean equals(final Object other) {
-            if (this == other) {
-                return true;
-            }
-            if (other == null || getClass() != other.getClass()) {
-                return false;
-            }
-
-            final DataObjectUpdates that = (DataObjectUpdates) other;
-
-            if (!updates.equals(that.updates)) {
-                return false;
-            }
-            return deletes.equals(that.deletes);
-
-        }
-
-        @Override
-        public int hashCode() {
-            int result = updates.hashCode();
-            result = 31 * result + deletes.hashCode();
-            return result;
-        }
-
-    }
-
-    /**
-     * Thrown when bulk update failed.
-     */
-    @Beta
-    class BulkUpdateException extends TranslationException {
-
-        private final Reverter reverter;
-        private final Set<InstanceIdentifier<?>> failedIds;
-
-        /**
-         * Constructs an BulkUpdateException.
-         * @param failedIds instance identifiers of the data objects that were not processed during bulk update.
-         * @param cause the cause of bulk update failure
-         */
-        public BulkUpdateException(@Nonnull final Set<InstanceIdentifier<?>> failedIds,
-                                   @Nonnull final Reverter reverter,
-                                   @Nonnull final Throwable cause) {
-            super("Bulk update failed at: " + failedIds, cause);
-            this.failedIds = failedIds;
-            this.reverter = checkNotNull(reverter, "reverter should not be null");
-        }
-
-        /**
-         * Reverts changes that were successfully applied during bulk update before failure occurred.
-         *
-         * @throws Reverter.RevertFailedException if revert fails
-         */
-        public void revertChanges() throws Reverter.RevertFailedException {
-            reverter.revert();
-        }
-
-        public Set<InstanceIdentifier<?>> getFailedIds() {
-            return failedIds;
-        }
-    }
-
-    /**
-     * Abstraction over revert mechanism in case of a bulk update failure.
-     */
-    @Beta
-    interface Reverter {
-
-        /**
-         * Reverts changes that were successfully applied during bulk update before failure occurred. Changes are
-         * reverted in reverse order they were applied.
-         *
-         * @throws RevertFailedException if not all of applied changes were successfully reverted
-         */
-        void revert() throws RevertFailedException;
-
-        /**
-         * Thrown when some of the changes applied during bulk update were not reverted.
-         */
-        @Beta
-        class RevertFailedException extends TranslationException {
-
-            // TODO change to list of VppDataModifications to make debugging easier
-            private final Set<InstanceIdentifier<?>> notRevertedChanges;
-
-            /**
-             * Constructs a RevertFailedException with the list of changes that were not reverted.
-             *
-             * @param notRevertedChanges list of changes that were not reverted
-             * @param cause              the cause of revert failure
-             */
-            public RevertFailedException(@Nonnull final Set<InstanceIdentifier<?>> notRevertedChanges,
-                                         final Throwable cause) {
-                super(cause);
-                checkNotNull(notRevertedChanges, "notRevertedChanges should not be null");
-                this.notRevertedChanges = ImmutableSet.copyOf(notRevertedChanges);
-            }
-
-            /**
-             * Returns the list of changes that were not reverted.
-             *
-             * @return list of changes that were not reverted
-             */
-            @Nonnull
-            public Set<InstanceIdentifier<?>> getNotRevertedChanges() {
-                return notRevertedChanges;
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistryBuilder.java b/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistryBuilder.java
deleted file mode 100644
index 3f0289ece..000000000
--- a/v3po/translate-api/src/main/java/io/fd/honeycomb/v3po/translate/write/registry/WriterRegistryBuilder.java
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- * Copyright (c) 2016 Cisco and/or its affiliates.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package io.fd.honeycomb.v3po.translate.write.registry;
-
-import com.google.common.annotations.Beta;
-import io.fd.honeycomb.v3po.translate.SubtreeManagerRegistryBuilder;
-
-/**
- * Builder for writer registries.
- */
-@Beta
-public interface WriterRegistryBuilder extends SubtreeManagerRegistryBuilder<WriterRegistry> {
-}