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-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/util/VppRWUtils.java14
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/AbstractCompositeVppWriter.java320
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeChildVppWriter.java105
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeListVppWriter.java142
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeRootVppWriter.java72
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ChildVppWriterCustomizer.java31
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ListVppWriterCustomizer.java33
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/RootVppWriterCustomizer.java40
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/DelegatingWriterRegistry.java72
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/NoopWriterCustomizer.java45
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/ReflexiveChildWriterCustomizer.java59
-rw-r--r--v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/TransactionWriteContext.java88
12 files changed, 1021 insertions, 0 deletions
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/util/VppRWUtils.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/util/VppRWUtils.java
index fe0f1f2fb..d11910b6f 100644
--- a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/util/VppRWUtils.java
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/util/VppRWUtils.java
@@ -23,6 +23,7 @@ import com.google.common.collect.Iterables;
import com.google.common.collect.Maps;
import io.fd.honeycomb.v3po.impl.trans.SubtreeManager;
import io.fd.honeycomb.v3po.impl.trans.r.ChildVppReader;
+import io.fd.honeycomb.v3po.impl.trans.w.ChildVppWriter;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
@@ -61,10 +62,18 @@ public final class VppRWUtils {
return Collections.emptyList();
}
+ public static <T> List<ChildVppWriter<? extends ChildOf<T>>> emptyChildWriterList() {
+ return Collections.emptyList();
+ }
+
public static <T> List<ChildVppReader<? extends Augmentation<T>>> emptyAugReaderList() {
return Collections.emptyList();
}
+ public static <T> List<ChildVppWriter<? extends Augmentation<T>>> emptyAugWriterList() {
+ return Collections.emptyList();
+ }
+
public static <T> List<ChildVppReader<? extends Augmentation<T>>> singletonAugReaderList(
ChildVppReader<? extends Augmentation<T>> item) {
return Collections.<ChildVppReader<? extends Augmentation<T>>>singletonList(item);
@@ -75,6 +84,11 @@ public final class VppRWUtils {
return Collections.<ChildVppReader<? extends ChildOf<T>>>singletonList(item);
}
+ public static <T> List<ChildVppWriter<? extends ChildOf<T>>> singletonChildWriterList(
+ ChildVppWriter<? extends ChildOf<T>> item) {
+ return Collections.<ChildVppWriter<? extends ChildOf<T>>>singletonList(item);
+ }
+
/**
* Replace last item in ID with a provided IdentifiableItem of the same type
*/
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/AbstractCompositeVppWriter.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/AbstractCompositeVppWriter.java
new file mode 100644
index 000000000..44690bd28
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/AbstractCompositeVppWriter.java
@@ -0,0 +1,320 @@
+/*
+ * 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.impl.trans.w.impl;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.base.Function;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+import io.fd.honeycomb.v3po.impl.trans.util.VppRWUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.ChildVppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.VppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.Identifiable;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class AbstractCompositeVppWriter<D extends DataObject> implements VppWriter<D> {
+
+ private static final Logger LOG = LoggerFactory.getLogger(AbstractCompositeVppWriter.class);
+
+ public static final Function<DataObject, Object> INDEX_FUNCTION = new Function<DataObject, Object>() {
+ @Override
+ public Object apply(final DataObject input) {
+ return input instanceof Identifiable<?>
+ ? ((Identifiable<?>) input).getKey()
+ : input;
+ }
+ };
+
+ private final Map<Class<? extends DataObject>, ChildVppWriter<? extends ChildOf<D>>> childReaders;
+ private final Map<Class<? extends DataObject>, ChildVppWriter<? extends Augmentation<D>>> augReaders;
+ private final InstanceIdentifier<D> instanceIdentifier;
+
+ public AbstractCompositeVppWriter(final Class<D> type,
+ final List<ChildVppWriter<? extends ChildOf<D>>> childReaders,
+ final List<ChildVppWriter<? extends Augmentation<D>>> augReaders) {
+ this.instanceIdentifier = InstanceIdentifier.create(type);
+ this.childReaders = VppRWUtils.uniqueLinkedIndex(childReaders, VppRWUtils.MANAGER_CLASS_FUNCTION);
+ this.augReaders = VppRWUtils.uniqueLinkedIndex(augReaders, VppRWUtils.MANAGER_CLASS_AUG_FUNCTION);
+ }
+
+ protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx) {
+ LOG.debug("{}: Writing current: {} data: {}", this, id, data);
+
+ LOG.trace("{}: Writing current attributes", this);
+ writeCurrentAttributes(id, data, ctx);
+
+ for (ChildVppWriter<? extends ChildOf<D>> child : childReaders.values()) {
+ LOG.debug("{}: Writing child in: {}", this, child);
+ child.writeChild(id, data, ctx);
+ }
+
+ for (ChildVppWriter<? extends Augmentation<D>> child : augReaders.values()) {
+ LOG.debug("{}: Writing augment in: {}", this, child);
+ child.writeChild(id, data, ctx);
+ }
+
+ LOG.debug("{}: Current node written successfully", this);
+ }
+
+ protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter,
+ final WriteContext ctx) {
+ LOG.debug("{}: Updating current: {} dataBefore: {}, datAfter: {}", this, id, dataBefore, dataAfter);
+
+ if(dataBefore.equals(dataAfter)) {
+ LOG.debug("{}: Skipping current(no update): {}", this, id);
+ // No change, ignore
+ return;
+ }
+
+ LOG.trace("{}: Updating current attributes", this);
+ updateCurrentAttributes(id, dataBefore, dataAfter, ctx);
+
+ for (ChildVppWriter<? extends ChildOf<D>> child : childReaders.values()) {
+ LOG.debug("{}: Updating child in: {}", this, child);
+ child.updateChild(id, dataBefore, dataAfter, ctx);
+ }
+
+ for (ChildVppWriter<? extends Augmentation<D>> child : augReaders.values()) {
+ LOG.debug("{}: Updating augment in: {}", this, child);
+ child.updateChild(id, dataBefore, dataAfter, ctx);
+ }
+
+ LOG.debug("{}: Current node updated successfully", this);
+ }
+
+ protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx) {
+ LOG.debug("{}: Deleting current: {} dataBefore: {}", this, id, dataBefore);
+
+ // delete in reversed order
+ for (ChildVppWriter<? extends Augmentation<D>> child : reverseCollection(augReaders.values())) {
+ LOG.debug("{}: Deleting augment in: {}", this, child);
+ child.deleteChild(id, dataBefore, ctx);
+ }
+
+ for (ChildVppWriter<? extends ChildOf<D>> child : reverseCollection(childReaders.values())) {
+ LOG.debug("{}: Deleting child in: {}", this, child);
+ child.deleteChild(id, dataBefore, ctx);
+ }
+
+ LOG.trace("{}: Deleting current attributes", this);
+ deleteCurrentAttributes(id, dataBefore, ctx);
+ }
+
+ @SuppressWarnings("unchecked")
+ @Override
+ public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+ @Nonnull final List<? extends DataObject> dataBefore,
+ @Nonnull final List<? extends DataObject> dataAfter,
+ @Nonnull final WriteContext ctx) {
+ LOG.debug("{}: Updating : {}", this, id);
+ LOG.trace("{}: Updating : {}, from: {} to: {}", this, id, dataBefore, dataAfter);
+
+ if (idPointsToCurrent(id)) {
+ if(isWrite(dataBefore, dataAfter)) {
+ writeAll((InstanceIdentifier<D>) id, dataAfter, ctx);
+ } else if(isDelete(dataBefore, dataAfter)) {
+ deleteAll((InstanceIdentifier<D>) id, dataBefore, ctx);
+ } else {
+ checkArgument(!dataBefore.isEmpty() && !dataAfter.isEmpty(), "No data to process");
+ updateAll((InstanceIdentifier<D>) id, dataBefore, dataAfter, ctx);
+ }
+ } else {
+ if (isWrite(dataBefore, dataAfter)) {
+ writeSubtree(id, dataAfter, ctx);
+ } else if (isDelete(dataBefore, dataAfter)) {
+ deleteSubtree(id, dataBefore, ctx);
+ } else {
+ checkArgument(!dataBefore.isEmpty() && !dataAfter.isEmpty(), "No data to process");
+ updateSubtree(id, dataBefore, dataAfter, ctx);
+ }
+ }
+ }
+
+ protected void updateAll(final @Nonnull InstanceIdentifier<D> id,
+ final @Nonnull List<? extends DataObject> dataBefore,
+ final @Nonnull List<? extends DataObject> dataAfter, final WriteContext ctx) {
+ LOG.trace("{}: Updating all : {}", this, id);
+
+ final Map<Object, ? extends DataObject> indexedAfter = indexData(dataAfter);
+ final Map<Object, ? extends DataObject> indexedBefore = indexData(dataBefore);
+
+ for (Map.Entry<Object, ? extends DataObject> after : indexedAfter.entrySet()) {
+ final DataObject before = indexedBefore.get(after.getKey());
+ if(before == null) {
+ writeCurrent(id, castToManaged(after.getValue()), ctx);
+ } else {
+ updateCurrent(id, castToManaged(before), castToManaged(after.getValue()), ctx);
+ }
+ }
+
+ // Delete the rest in dataBefore
+ for (Object deletedNodeKey : Sets.difference(indexedBefore.keySet(), indexedAfter.keySet())) {
+ final DataObject deleted = indexedBefore.get(deletedNodeKey);
+ deleteCurrent(id, castToManaged(deleted), ctx);
+ }
+ }
+
+ private static Map<Object, ? extends DataObject> indexData(final List<? extends DataObject> data) {
+ return Maps.uniqueIndex(data, INDEX_FUNCTION);
+ }
+
+ protected void deleteAll(final @Nonnull InstanceIdentifier<D> id,
+ final @Nonnull List<? extends DataObject> dataBefore, final WriteContext ctx) {
+ LOG.trace("{}: Deleting all : {}", this, id);
+ for (DataObject singleValue : dataBefore) {
+ checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(singleValue.getClass()));
+ deleteCurrent(id, castToManaged(singleValue), ctx);
+ }
+ }
+
+ private D castToManaged(final DataObject data) {
+ checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(data.getClass()));
+ return getManagedDataObjectType().getTargetType().cast(data);
+ }
+
+ protected void writeAll(final @Nonnull InstanceIdentifier<D> id,
+ final @Nonnull List<? extends DataObject> dataAfter, final WriteContext ctx) {
+ LOG.trace("{}: Writing all : {}", this, id);
+ for (DataObject singleValue : dataAfter) {
+ checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(singleValue.getClass()));
+ writeCurrent(id, castToManaged(singleValue), ctx);
+ }
+ }
+
+ private static boolean isWrite(final List<? extends DataObject> dataBefore,
+ final List<? extends DataObject> dataAfter) {
+ return dataBefore.isEmpty() && !dataAfter.isEmpty();
+ }
+
+ private static boolean isDelete(final List<? extends DataObject> dataBefore,
+ final List<? extends DataObject> dataAfter) {
+ return dataAfter.isEmpty() && !dataBefore.isEmpty();
+ }
+
+ private void writeSubtree(final InstanceIdentifier<? extends DataObject> id,
+ final List<? extends DataObject> dataAfter, final WriteContext ctx) {
+ LOG.debug("{}: Writing subtree: {}", this, id);
+ final VppWriter<? extends ChildOf<D>> vppWriter = getNextWriter(id);
+
+ if (vppWriter != null) {
+ LOG.debug("{}: Writing subtree: {} in: {}", this, id, vppWriter);
+ vppWriter.update(id, Collections.<DataObject>emptyList(), dataAfter, ctx);
+ } else {
+ // If there's no dedicated writer, use write current
+ // But we need current data after to do so
+ final InstanceIdentifier<D> currentId = VppRWUtils.cutId(id, getManagedDataObjectType());
+ List<? extends DataObject> currentDataAfter = ctx.readAfter(currentId);
+ LOG.debug("{}: Dedicated subtree writer missing for: {}. Writing current.", this,
+ VppRWUtils.getNextId(id, getManagedDataObjectType()).getType(), currentDataAfter);
+ writeAll(currentId, currentDataAfter, ctx);
+ }
+ }
+
+ private boolean idPointsToCurrent(final @Nonnull InstanceIdentifier<? extends DataObject> id) {
+ return id.getTargetType().equals(getManagedDataObjectType().getTargetType());
+ }
+
+ @SuppressWarnings("unchecked")
+ private void deleteSubtree(final InstanceIdentifier<? extends DataObject> id,
+ final List<? extends DataObject> dataBefore, final WriteContext ctx) {
+ LOG.debug("{}: Deleting subtree: {}", this, id);
+ final VppWriter<? extends ChildOf<D>> vppWriter = getNextWriter(id);
+
+ if (vppWriter != null) {
+ LOG.debug("{}: Deleting subtree: {} in: {}", this, id, vppWriter);
+ vppWriter.update(id, dataBefore, Collections.<DataObject>emptyList(), ctx);
+ } else {
+ updateSubtreeFromCurrent(id, ctx);
+ }
+ }
+
+ private void updateSubtreeFromCurrent(final InstanceIdentifier<? extends DataObject> id, final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.cutId(id, getManagedDataObjectType());
+ List<? extends DataObject> currentDataBefore = ctx.readBefore(currentId);
+ List<? extends DataObject> currentDataAfter = ctx.readAfter(currentId);
+ LOG.debug("{}: Dedicated subtree writer missing for: {}. Updating current without subtree", this,
+ VppRWUtils.getNextId(id, getManagedDataObjectType()).getType(), currentDataAfter);
+ updateAll((InstanceIdentifier<D>) id, currentDataBefore, currentDataAfter, ctx);
+ }
+
+ @SuppressWarnings("unchecked")
+ private void updateSubtree(final InstanceIdentifier<? extends DataObject> id,
+ final List<? extends DataObject> dataBefore,
+ final List<? extends DataObject> dataAfter,
+ final WriteContext ctx) {
+ LOG.debug("{}: Updating subtree: {}", this, id);
+ final VppWriter<? extends ChildOf<D>> vppWriter = getNextWriter(id);
+
+ if (vppWriter != null) {
+ LOG.debug("{}: Updating subtree: {} in: {}", this, id, vppWriter);
+ vppWriter.update(id, dataBefore, dataAfter, ctx);
+ } else {
+ updateSubtreeFromCurrent(id, ctx);
+ }
+ }
+
+ private VppWriter<? extends ChildOf<D>> getNextWriter(final InstanceIdentifier<? extends DataObject> id) {
+ final Class<? extends DataObject> next = VppRWUtils.getNextId(id, getManagedDataObjectType()).getType();
+ return childReaders.get(next);
+ }
+
+ private static <T> List<T> reverseCollection(final Collection<T> original) {
+ // TODO find a better reverse mechanism (probably a different collection for child readers is necessary)
+ final ArrayList<T> list = Lists.newArrayList(original);
+ Collections.reverse(list);
+ return list;
+ }
+
+ protected abstract void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D data,
+ @Nonnull final WriteContext ctx);
+
+ protected abstract void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataBefore,
+ @Nonnull final WriteContext ctx);
+
+ protected abstract void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter,
+ @Nonnull final WriteContext ctx);
+
+ @Nonnull
+ @Override
+ public InstanceIdentifier<D> getManagedDataObjectType() {
+ return instanceIdentifier;
+ }
+
+
+ @Override
+ public String toString() {
+ return String.format("Writer[%s]", getManagedDataObjectType().getTargetType().getSimpleName());
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeChildVppWriter.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeChildVppWriter.java
new file mode 100644
index 000000000..919bbaa0f
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeChildVppWriter.java
@@ -0,0 +1,105 @@
+/*
+ * 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.impl.trans.w.impl;
+
+import com.google.common.base.Optional;
+import io.fd.honeycomb.v3po.impl.trans.util.VppRWUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.ChildVppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import io.fd.honeycomb.v3po.impl.trans.w.impl.spi.ChildVppWriterCustomizer;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class CompositeChildVppWriter<D extends DataObject> extends AbstractCompositeVppWriter<D>
+ implements ChildVppWriter<D> {
+
+ private final ChildVppWriterCustomizer<D> customizer;
+
+ public CompositeChildVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childWriters,
+ @Nonnull final List<ChildVppWriter<? extends Augmentation<D>>> augReaders,
+ @Nonnull final ChildVppWriterCustomizer<D> customizer) {
+ super(type, childWriters, augReaders);
+ this.customizer = customizer;
+ }
+
+ public CompositeChildVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childWriters,
+ @Nonnull final ChildVppWriterCustomizer<D> customizer) {
+ this(type, childWriters, VppRWUtils.<D>emptyAugWriterList(), customizer);
+ }
+
+ public CompositeChildVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final ChildVppWriterCustomizer<D> customizer) {
+ this(type, VppRWUtils.<D>emptyChildWriterList(), VppRWUtils.<D>emptyAugWriterList(), customizer);
+ }
+
+ @Override
+ protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
+ @Nonnull final WriteContext ctx) {
+ customizer.writeCurrentAttributes(id, data, ctx.getContext());
+ }
+
+ @Override
+ protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull WriteContext ctx) {
+ customizer.deleteCurrentAttributes(id, dataBefore, ctx.getContext());
+ }
+
+ @Override
+ protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter, @Nonnull WriteContext ctx) {
+ customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx.getContext());
+ }
+
+ @Override
+ public void writeChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentData, @Nonnull WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final Optional<D> currentData = customizer.extract(currentId, parentData);
+ if(currentData.isPresent()) {
+ writeCurrent(currentId, currentData.get(), ctx);
+ }
+ }
+
+ @Override
+ public void deleteChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentData,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final Optional<D> currentData = customizer.extract(currentId, parentData);
+ if(currentData.isPresent()) {
+ deleteCurrent(currentId, currentData.get(), ctx);
+ }
+ }
+
+ @Override
+ public void updateChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentDataBefore, @Nonnull final DataObject parentDataAfter,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final Optional<D> before = customizer.extract(currentId, parentDataBefore);
+ final Optional<D> after = customizer.extract(currentId, parentDataAfter);
+ if(before.isPresent() && after.isPresent()) {
+ updateCurrent(currentId, before.get(), after.get(), ctx);
+ }
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeListVppWriter.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeListVppWriter.java
new file mode 100644
index 000000000..8914d3757
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeListVppWriter.java
@@ -0,0 +1,142 @@
+/*
+ * 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.impl.trans.w.impl;
+
+import io.fd.honeycomb.v3po.impl.trans.util.VppRWUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.ChildVppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import io.fd.honeycomb.v3po.impl.trans.w.impl.spi.ListVppWriterCustomizer;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+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;
+
+public class CompositeListVppWriter<D extends DataObject & Identifiable<K>, K extends Identifier<D>> extends AbstractCompositeVppWriter<D>
+ implements ChildVppWriter<D> {
+
+ private final ListVppWriterCustomizer<D, K> customizer;
+
+ public CompositeListVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childReaders,
+ @Nonnull final List<ChildVppWriter<? extends Augmentation<D>>> augReaders,
+ @Nonnull final ListVppWriterCustomizer<D, K> customizer) {
+ super(type, childReaders, augReaders);
+ this.customizer = customizer;
+ }
+
+ public CompositeListVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childReaders,
+ @Nonnull final ListVppWriterCustomizer<D, K> customizer) {
+ this(type, childReaders, VppRWUtils.<D>emptyAugWriterList(), customizer);
+ }
+
+ public CompositeListVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final ListVppWriterCustomizer<D, K> customizer) {
+ this(type, VppRWUtils.<D>emptyChildWriterList(), VppRWUtils.<D>emptyAugWriterList(), customizer);
+
+ }
+
+ @Override
+ protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
+ @Nonnull final WriteContext ctx) {
+ customizer.writeCurrentAttributes(id, data, ctx.getContext());
+ }
+
+ @Override
+ protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final WriteContext ctx) {
+ customizer.deleteCurrentAttributes(id, dataBefore, ctx.getContext());
+ }
+
+ @Override
+ protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter, @Nonnull final WriteContext ctx) {
+ customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx.getContext());
+ }
+
+ @Override
+ public void writeChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentData,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final List<D> currentData = customizer.extract(currentId, parentData);
+ writeAll(currentId, currentData, ctx);
+ }
+
+ @Override
+ public void deleteChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentDataBefore,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final List<D> dataBefore = customizer.extract(currentId, parentDataBefore);
+ deleteAll(currentId, dataBefore, ctx);
+ }
+
+ @Override
+ public void updateChild(@Nonnull final InstanceIdentifier<? extends DataObject> parentId,
+ @Nonnull final DataObject parentDataBefore, @Nonnull final DataObject parentDataAfter,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier<D> currentId = VppRWUtils.appendTypeToId(parentId, getManagedDataObjectType());
+ final List<D> dataBefore = customizer.extract(currentId, parentDataBefore);
+ final List<D> dataAfter = customizer.extract(currentId, parentDataAfter);
+ updateAll(currentId, dataBefore, dataAfter, ctx);
+ }
+
+ @Override
+ protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx) {
+ // Make sure the key is present
+ if(isWildcarded(id)) {
+ super.writeCurrent(getSpecificId(id, data), data, ctx);
+ } else {
+ super.writeCurrent(id, data, ctx);
+ }
+ }
+
+ @Override
+ protected void updateCurrent(final InstanceIdentifier<D> id, final D dataBefore, final D dataAfter,
+ final WriteContext ctx) {
+ // Make sure the key is present
+ if(isWildcarded(id)) {
+ super.updateCurrent(getSpecificId(id, dataBefore), dataBefore, dataAfter, ctx);
+ } else {
+ super.updateCurrent(id, dataBefore, dataAfter, ctx);
+ }
+ }
+
+ @Override
+ protected void deleteCurrent(final InstanceIdentifier<D> id, final D dataBefore, final WriteContext ctx) {
+ // Make sure the key is present
+ if(isWildcarded(id)) {
+ super.deleteCurrent(getSpecificId(id, dataBefore), dataBefore, ctx);
+ } else {
+ super.deleteCurrent(id, dataBefore, ctx);
+ }
+ }
+
+ private boolean isWildcarded(final InstanceIdentifier<D> id) {
+ return id.firstIdentifierOf(getManagedDataObjectType().getTargetType()).isWildcarded();
+ }
+
+ private InstanceIdentifier<D> getSpecificId(final InstanceIdentifier<D> currentId, final D current) {
+ return VppRWUtils.replaceLastInId(currentId,
+ new InstanceIdentifier.IdentifiableItem<>(currentId.getTargetType(), current.getKey()));
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeRootVppWriter.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeRootVppWriter.java
new file mode 100644
index 000000000..6be5651b3
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/CompositeRootVppWriter.java
@@ -0,0 +1,72 @@
+/*
+ * 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.impl.trans.w.impl;
+
+import io.fd.honeycomb.v3po.impl.trans.util.VppRWUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.ChildVppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import io.fd.honeycomb.v3po.impl.trans.w.impl.spi.RootVppWriterCustomizer;
+import java.util.List;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.Augmentation;
+import org.opendaylight.yangtools.yang.binding.ChildOf;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class CompositeRootVppWriter<D extends DataObject> extends AbstractCompositeVppWriter<D> {
+
+ private final RootVppWriterCustomizer<D> customizer;
+
+ public CompositeRootVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childReaders,
+ @Nonnull final List<ChildVppWriter<? extends Augmentation<D>>> augReaders,
+ @Nonnull final RootVppWriterCustomizer<D> customizer) {
+ super(type, childReaders, augReaders);
+ this.customizer = customizer;
+ }
+
+ public CompositeRootVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final List<ChildVppWriter<? extends ChildOf<D>>> childReaders,
+ @Nonnull final RootVppWriterCustomizer<D> customizer) {
+ this(type, childReaders, VppRWUtils.<D>emptyAugWriterList(), customizer);
+ }
+
+ public CompositeRootVppWriter(@Nonnull final Class<D> type,
+ @Nonnull final RootVppWriterCustomizer<D> customizer) {
+ this(type, VppRWUtils.<D>emptyChildWriterList(), VppRWUtils.<D>emptyAugWriterList(), customizer);
+ }
+
+ @Override
+ protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
+ @Nonnull final WriteContext ctx) {
+ customizer.writeCurrentAttributes(id, data, ctx.getContext());
+ }
+
+ @Override
+ protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final WriteContext ctx) {
+ customizer.deleteCurrentAttributes(id, dataBefore, ctx.getContext());
+ }
+
+ @Override
+ protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter,
+ @Nonnull final WriteContext ctx) {
+ customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx.getContext());
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ChildVppWriterCustomizer.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ChildVppWriterCustomizer.java
new file mode 100644
index 000000000..5ea504209
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ChildVppWriterCustomizer.java
@@ -0,0 +1,31 @@
+/*
+ * 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.impl.trans.w.impl.spi;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.Optional;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+@Beta
+public interface ChildVppWriterCustomizer<D extends DataObject> extends RootVppWriterCustomizer<D> {
+
+ @Nonnull
+ Optional<D> extract(@Nonnull final InstanceIdentifier<D> currentId, @Nonnull final DataObject parentData);
+
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ListVppWriterCustomizer.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ListVppWriterCustomizer.java
new file mode 100644
index 000000000..edd8de930
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/ListVppWriterCustomizer.java
@@ -0,0 +1,33 @@
+/*
+ * 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.impl.trans.w.impl.spi;
+
+import com.google.common.annotations.Beta;
+import java.util.List;
+import javax.annotation.Nonnull;
+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;
+
+@Beta
+public interface ListVppWriterCustomizer<C extends DataObject & Identifiable<K>, K extends Identifier<C>> extends RootVppWriterCustomizer<C> {
+
+ @Nonnull
+ List<C> extract(@Nonnull final InstanceIdentifier<C> currentId, @Nonnull final DataObject parentData);
+
+} \ No newline at end of file
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/RootVppWriterCustomizer.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/RootVppWriterCustomizer.java
new file mode 100644
index 000000000..6a2d0c2bf
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/impl/spi/RootVppWriterCustomizer.java
@@ -0,0 +1,40 @@
+/*
+ * 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.impl.trans.w.impl.spi;
+
+import com.google.common.annotations.Beta;
+import io.fd.honeycomb.v3po.impl.trans.util.Context;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+@Beta
+public interface RootVppWriterCustomizer<D extends DataObject> {
+
+ void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataAfter,
+ @Nonnull final Context writeContext);
+
+ void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter,
+ @Nonnull final Context writeContext);
+
+ void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id,
+ @Nonnull final D dataBefore,
+ @Nonnull final Context writeContext);
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/DelegatingWriterRegistry.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/DelegatingWriterRegistry.java
new file mode 100644
index 000000000..6df960626
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/DelegatingWriterRegistry.java
@@ -0,0 +1,72 @@
+/*
+ * 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.impl.trans.w.util;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.common.collect.Iterables;
+import io.fd.honeycomb.v3po.impl.trans.util.VppRWUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.VppWriter;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import java.util.List;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Simple reader registry able to perform and aggregated read (ROOT read) on top of all
+ * provided readers. Also able to delegate a specific read to one of the delegate readers.
+ *
+ * This could serve as a utility to hold & hide all available readers in upper layers.
+ */
+public final class DelegatingWriterRegistry implements VppWriter<DataObject> {
+
+ private final Map<Class<? extends DataObject>, VppWriter<? extends DataObject>> rootReaders;
+
+ /**
+ * Create new {@link DelegatingWriterRegistry}
+ *
+ * @param rootReaders List of delegate readers
+ */
+ public DelegatingWriterRegistry(@Nonnull final List<VppWriter<? extends DataObject>> rootReaders) {
+ this.rootReaders = VppRWUtils.uniqueLinkedIndex(checkNotNull(rootReaders), VppRWUtils.MANAGER_CLASS_FUNCTION);
+ }
+
+ /**
+ * @throws UnsupportedOperationException This getter is not supported for reader registry since it does not manage a
+ * specific node type
+ */
+ @Nonnull
+ @Override
+ public InstanceIdentifier<DataObject> getManagedDataObjectType() {
+ throw new UnsupportedOperationException("Root registry has no type");
+ }
+
+ @Override
+ public void update(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+ @Nonnull final List<? extends DataObject> dataBefore,
+ @Nonnull final List<? extends DataObject> dataAfter,
+ @Nonnull final WriteContext ctx) {
+ final InstanceIdentifier.PathArgument first = checkNotNull(
+ Iterables.getFirst(id.getPathArguments(), null), "Empty id");
+ final VppWriter<? extends DataObject> vppWriter = rootReaders.get(first.getType());
+ checkNotNull(vppWriter,
+ "Unable to write %s. Missing writer. Current writers for: %s", id, rootReaders.keySet());
+ vppWriter.update(id, dataBefore, dataAfter, ctx);
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/NoopWriterCustomizer.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/NoopWriterCustomizer.java
new file mode 100644
index 000000000..4f02a1d5e
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/NoopWriterCustomizer.java
@@ -0,0 +1,45 @@
+/*
+ * 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.impl.trans.w.util;
+
+import io.fd.honeycomb.v3po.impl.trans.util.Context;
+import io.fd.honeycomb.v3po.impl.trans.w.impl.spi.RootVppWriterCustomizer;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class NoopWriterCustomizer<D extends DataObject> implements RootVppWriterCustomizer<D> {
+
+ @Override
+ public void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataAfter,
+ @Nonnull final Context ctx) {
+
+ }
+
+ @Override
+ public void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final D dataAfter,
+ @Nonnull final Context ctx) {
+
+ }
+
+ @Override
+ public void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+ @Nonnull final Context ctx) {
+
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/ReflexiveChildWriterCustomizer.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/ReflexiveChildWriterCustomizer.java
new file mode 100644
index 000000000..9d324a059
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/ReflexiveChildWriterCustomizer.java
@@ -0,0 +1,59 @@
+/*
+ * 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.impl.trans.w.util;
+
+import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Iterables;
+import io.fd.honeycomb.v3po.impl.trans.util.ReflectionUtils;
+import io.fd.honeycomb.v3po.impl.trans.w.impl.spi.ChildVppWriterCustomizer;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Collections;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+/**
+ * Might be slow !
+ */
+public class ReflexiveChildWriterCustomizer<C extends DataObject> extends NoopWriterCustomizer<C> implements
+ ChildVppWriterCustomizer<C> {
+
+ @Nonnull
+ @Override
+ @SuppressWarnings("unchecked")
+ public Optional<C> extract(@Nonnull final InstanceIdentifier<C> currentId, @Nonnull final DataObject parentData) {
+ final Class<C> currentType = currentId.getTargetType();
+ final Optional<Method> method = ReflectionUtils.findMethodReflex(getParentType(currentId),
+ "get" + currentType.getSimpleName(), Collections.<Class<?>>emptyList(), currentType);
+
+ Preconditions.checkArgument(method.isPresent(), "Unable to get %s from %s", currentType, parentData);
+
+ try {
+ return method.isPresent()
+ ? Optional.of((C) method.get().invoke(parentData))
+ : Optional.<C>absent();
+ } catch (IllegalAccessException | InvocationTargetException e) {
+ throw new IllegalArgumentException("Unable to get " + currentType + " from " + parentData, e);
+ }
+ }
+
+ private Class<? extends DataObject> getParentType(final @Nonnull InstanceIdentifier<C> currentId) {
+ return Iterables.get(currentId.getPathArguments(), Iterables.size(currentId.getPathArguments()) - 2).getType();
+ }
+}
diff --git a/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/TransactionWriteContext.java b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/TransactionWriteContext.java
new file mode 100644
index 000000000..3a1fd2f57
--- /dev/null
+++ b/v3po/impl/src/main/java/io/fd/honeycomb/v3po/impl/trans/w/util/TransactionWriteContext.java
@@ -0,0 +1,88 @@
+/*
+ * 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.impl.trans.w.util;
+
+import com.google.common.base.Optional;
+import com.google.common.util.concurrent.CheckedFuture;
+import io.fd.honeycomb.v3po.impl.trans.util.Context;
+import io.fd.honeycomb.v3po.impl.trans.w.WriteContext;
+import java.util.Collections;
+import java.util.List;
+import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
+import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
+import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
+import org.opendaylight.yangtools.yang.binding.DataObject;
+import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
+
+public class TransactionWriteContext implements WriteContext, AutoCloseable {
+
+ private final ReadOnlyTransaction beforeTx;
+ private final ReadOnlyTransaction afterTx;
+ private final Context ctx;
+
+ public TransactionWriteContext(final ReadOnlyTransaction beforeTx, final ReadOnlyTransaction afterTx,
+ final Context ctx) {
+ super();
+ this.beforeTx = beforeTx;
+ this.afterTx = afterTx;
+ this.ctx = ctx;
+ }
+
+ public TransactionWriteContext(final ReadOnlyTransaction beforeTx,
+ final ReadOnlyTransaction afterTx) {
+ this(beforeTx, afterTx, new Context());
+ }
+
+ @Override
+ public List<? extends DataObject> readBefore(final InstanceIdentifier<? extends DataObject> currentId) {
+ return read(currentId, beforeTx);
+ }
+
+ private List<? extends DataObject> read(final InstanceIdentifier<? extends DataObject> currentId,
+ final ReadOnlyTransaction tx) {
+ // FIXME how to read all for list (using wildcarded ID) ?
+
+ final CheckedFuture<? extends Optional<? extends DataObject>, ReadFailedException> read =
+ tx.read(LogicalDatastoreType.CONFIGURATION, currentId);
+ try {
+ final Optional<? extends DataObject> optional = read.checkedGet();
+ return optional.isPresent()
+ ? Collections.singletonList(optional.get())
+ : Collections.<DataObject>emptyList();
+ } catch (ReadFailedException e) {
+ throw new IllegalStateException("Unable to perform read", e);
+ }
+ }
+
+ @Override
+ public List<? extends DataObject> readAfter(final InstanceIdentifier<? extends DataObject> currentId) {
+ return read(currentId, afterTx);
+ }
+
+ @Override
+ public Context getContext() {
+ return ctx;
+ }
+
+ /**
+ * Does not close the transactions
+ */
+ @Override
+ public void close() throws Exception {
+ ctx.close();
+ }
+}