HONEYCOMB-9: Remove references to VPP from translation layer

Change-Id: I281db366a112edc08203e8cb392a212708d4552a
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>

1 files changed, 137 insertions, 0 deletions

diff --git a/v3po/translate-impl/src/main/java/io/fd/honeycomb/v3po/translate/impl/read/CompositeListReader.java b/v3po/translate-impl/src/main/java/io/fd/honeycomb/v3po/translate/impl/read/CompositeListReader.java
new file mode 100644
index 000000000..fd7b279ca
--- /dev/null
+++ b/v3po/translate-impl/src/main/java/io/fd/honeycomb/v3po/translate/impl/read/CompositeListReader.java
@@ -0,0 +1,137 @@
+/*
+ * 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.impl.read;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import com.google.common.annotations.Beta;
+import com.google.common.base.Optional;
+import io.fd.honeycomb.v3po.translate.read.ReadFailedException;
+import io.fd.honeycomb.v3po.translate.util.RWUtils;
+import io.fd.honeycomb.v3po.translate.read.ChildReader;
+import io.fd.honeycomb.v3po.translate.read.ListReader;
+import io.fd.honeycomb.v3po.translate.read.ReadContext;
+import io.fd.honeycomb.v3po.translate.spi.read.ListReaderCustomizer;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import javax.annotation.concurrent.ThreadSafe;
+import org.opendaylight.yangtools.concepts.Builder;
+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;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Composite implementation of {@link ChildReader} able to place the read result into parent builder object intended
+ * for list node type.
+ *
+ * This reader checks if the IDs are wildcarded in which case it performs read of all list entries. In case the ID has a
+ * key, it reads only the specified value.
+ */
+@Beta
+@ThreadSafe
+public final class CompositeListReader<C extends DataObject & Identifiable<K>, K extends Identifier<C>, B extends Builder<C>>
+        extends AbstractCompositeReader<C, B> implements ChildReader<C>, ListReader<C, K> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(CompositeListReader.class);
+
+    private final ListReaderCustomizer<C, K, B> customizer;
+
+    /**
+     * Create new {@link CompositeListReader}
+     *
+     * @param managedDataObjectType Class object for managed data type. Must come from a list node type.
+     * @param childReaders          Child nodes(container, list) readers
+     * @param augReaders            Child augmentations readers
+     * @param customizer            Customizer instance to customize this generic reader
+     */
+    public CompositeListReader(@Nonnull final Class<C> managedDataObjectType,
+                               @Nonnull final List<ChildReader<? extends ChildOf<C>>> childReaders,
+                               @Nonnull final List<ChildReader<? extends Augmentation<C>>> augReaders,
+                               @Nonnull final ListReaderCustomizer<C, K, B> customizer) {
+        super(managedDataObjectType, childReaders, augReaders);
+        this.customizer = customizer;
+    }
+
+    /**
+     * @see {@link CompositeListReader#CompositeListReader(Class, List, List, ListReaderCustomizer)}
+     */
+    public CompositeListReader(@Nonnull final Class<C> managedDataObjectType,
+                               @Nonnull final List<ChildReader<? extends ChildOf<C>>> childReaders,
+                               @Nonnull final ListReaderCustomizer<C, K, B> customizer) {
+        this(managedDataObjectType, childReaders, RWUtils.<C>emptyAugReaderList(), customizer);
+    }
+
+    /**
+     * @see {@link CompositeListReader#CompositeListReader(Class, List, List, ListReaderCustomizer)}
+     */
+    public CompositeListReader(@Nonnull final Class<C> managedDataObjectType,
+                               @Nonnull final ListReaderCustomizer<C, K, B> customizer) {
+        this(managedDataObjectType, RWUtils.<C>emptyChildReaderList(), RWUtils.<C>emptyAugReaderList(),
+                customizer);
+    }
+
+    @Override
+    public void read(@Nonnull final InstanceIdentifier<? extends DataObject> id,
+                     @Nonnull final Builder<? extends DataObject> parentBuilder,
+                     @Nonnull final ReadContext ctx) throws ReadFailedException {
+        // Create ID pointing to current node
+        final InstanceIdentifier<C> currentId = RWUtils.appendTypeToId(id, getManagedDataObjectType());
+        // Read all, since current ID is definitely wildcarded
+        final List<C> ifcs = readList(currentId, ctx);
+        customizer.merge(parentBuilder, ifcs);
+    }
+
+    @Override
+    @Nonnull
+    public List<C> readList(@Nonnull final InstanceIdentifier<C> id,
+                            @Nonnull final ReadContext ctx) throws ReadFailedException {
+        LOG.trace("{}: Reading all list entries", this);
+        final List<K> allIds = customizer.getAllIds(id, ctx.getContext());
+        LOG.debug("{}: Reading list entries for: {}", this, allIds);
+
+        final ArrayList<C> allEntries = new ArrayList<>(allIds.size());
+        for (K key : allIds) {
+            final InstanceIdentifier.IdentifiableItem<C, K> currentBdItem =
+                    RWUtils.getCurrentIdItem(id, key);
+            final InstanceIdentifier<C> keyedId = RWUtils.replaceLastInId(id, currentBdItem);
+            final Optional<C> read = readCurrent(keyedId, ctx);
+            final DataObject singleItem = read.get();
+            checkArgument(getManagedDataObjectType().getTargetType().isAssignableFrom(singleItem.getClass()));
+            allEntries.add(getManagedDataObjectType().getTargetType().cast(singleItem));
+        }
+        return allEntries;
+    }
+
+    @Override
+    protected void readCurrentAttributes(@Nonnull final InstanceIdentifier<C> id, @Nonnull final B builder,
+                                         @Nonnull final ReadContext ctx)
+            throws ReadFailedException {
+        customizer.readCurrentAttributes(id, builder, ctx.getContext());
+    }
+
+    @Override
+    protected B getBuilder(@Nonnull final InstanceIdentifier<C> id) {
+        return customizer.getBuilder(id);
+    }
+
+}