1 files changed, 106 insertions, 0 deletions
diff --git a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java
new file mode 100644
index 000000000..f61812931
--- /dev/null
+++ b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericListWriter.java
@@ -0,0 +1,106 @@
+/*
+ * 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.translate.impl.write;
+
+import io.fd.honeycomb.translate.spi.write.ListWriterCustomizer;
+import io.fd.honeycomb.translate.util.RWUtils;
+import io.fd.honeycomb.translate.util.write.AbstractGenericWriter;
+import io.fd.honeycomb.translate.write.ListWriter;
+import io.fd.honeycomb.translate.write.WriteContext;
+import io.fd.honeycomb.translate.write.WriteFailedException;
+import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
+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;
+
+/**
+ * Generic list node writer with customizable behavior thanks to injected customizer.
+ */
+public final class GenericListWriter<D extends DataObject & Identifiable<K>, K extends Identifier<D>> extends
+        AbstractGenericWriter<D> implements ListWriter<D, K> {
+
+    private final WriterCustomizer<D> customizer;
+
+    public GenericListWriter(@Nonnull final InstanceIdentifier<D> type,
+                             @Nonnull final ListWriterCustomizer<D, K> customizer) {
+        super(type);
+        this.customizer = customizer;
+    }
+
+    @Override
+    protected void writeCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D data,
+                                          @Nonnull final WriteContext ctx) throws WriteFailedException {
+        customizer.writeCurrentAttributes(id, data, ctx);
+    }
+
+    @Override
+    protected void deleteCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+                                           @Nonnull final WriteContext ctx) throws WriteFailedException {
+        customizer.deleteCurrentAttributes(id, dataBefore, ctx);
+    }
+
+    @Override
+    protected void updateCurrentAttributes(@Nonnull final InstanceIdentifier<D> id, @Nonnull final D dataBefore,
+                                           @Nonnull final D dataAfter, @Nonnull final WriteContext ctx)
+        throws WriteFailedException {
+        customizer.updateCurrentAttributes(id, dataBefore, dataAfter, ctx);
+    }
+
+    @Override
+    protected void writeCurrent(final InstanceIdentifier<D> id, final D data, final WriteContext ctx)
+        throws WriteFailedException {
+        // 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) throws WriteFailedException {
+        // 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)
+        throws WriteFailedException {
+        // 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 RWUtils.replaceLastInId(currentId,
+            new InstanceIdentifier.IdentifiableItem<>(currentId.getTargetType(), current.getKey()));
+    }
+}