1 files changed, 68 insertions, 0 deletions
diff --git a/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/DelegatingRewriteDeleteProducer.java b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/DelegatingRewriteDeleteProducer.java
new file mode 100644
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--- /dev/null
+++ b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/DelegatingRewriteDeleteProducer.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2017 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.data.impl;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import java.util.AbstractMap;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
+
+/**
+ * Basic implementation for nodes that are not considered modifications but their children could be
+ */
+abstract class DelegatingRewriteDeleteProducer implements RewriteDeleteProducer {
+
+    private final NormalizedNodeRewriteDeleteRegistry baseRewriteProducer;
+
+    DelegatingRewriteDeleteProducer(@Nonnull final NormalizedNodeRewriteDeleteRegistry baseRewriteProducer) {
+        this.baseRewriteProducer = baseRewriteProducer;
+    }
+
+    @Override
+    public Collection<NormalizedNodeUpdate> normalizedUpdates(@Nonnull final YangInstanceIdentifier topLevelIdentifier,
+                                                              @Nonnull final Map.Entry<YangInstanceIdentifier.PathArgument, DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> entry) {
+        // just delegates to lower level
+        checkState(entry.getValue() instanceof DataContainerNode, "Unable to extract children");
+        checkState(entry.getValue() instanceof DataContainerChild, "Unable to extract identifier");
+        final Collection<DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> value =
+                DataContainerNode.class.cast(entry.getValue()).getValue();
+        return value.stream()
+                .map(DataContainerChild.class::cast)
+                .flatMap(node -> baseRewriteProducer
+                        .normalizedUpdates(childYangId(topLevelIdentifier, entry), childMapEntry(node)).stream())
+                .collect(Collectors.toList());
+    }
+
+    private static AbstractMap.SimpleEntry<YangInstanceIdentifier.PathArgument, DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> childMapEntry(
+            final DataContainerChild node) {
+        return new HashMap.SimpleEntry<YangInstanceIdentifier.PathArgument, DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>>(
+                node.getIdentifier(), node);
+    }
+
+    private static YangInstanceIdentifier childYangId(final @Nonnull YangInstanceIdentifier topLevelIdentifier,
+                                                      final @Nonnull Map.Entry<YangInstanceIdentifier.PathArgument, DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> entry) {
+        return YangInstanceIdentifier.builder(topLevelIdentifier)
+                .node(entry.getKey()).build();
+    }
+}