HONEYCOMB-350 - APPEAR/DISAPPEAR modification handling

Allows these types of modifications to check in depth,
to see if some of their children nodes were not modified

Change-Id: Ice2f988732c2d9ecad8e960c4f10d01863fb0cfd
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/LeafRewriteDeleteProducer.java b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/LeafRewriteDeleteProducer.java
new file mode 100644
index 000000000..ddf0d64f7
--- /dev/null
+++ b/infra/data-impl/src/main/java/io/fd/honeycomb/data/impl/LeafRewriteDeleteProducer.java
@@ -0,0 +1,40 @@
+/*
+ * 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 java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import javax.annotation.Nonnull;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+class LeafRewriteDeleteProducer implements RewriteDeleteProducer {
+
+    private static final Logger LOG = LoggerFactory.getLogger(LeafRewriteDeleteProducer.class);
+
+    @Override
+    public Collection<NormalizedNodeUpdate> normalizedUpdates(@Nonnull final YangInstanceIdentifier topLevelIdentifier,
+                                                              @Nonnull final Map.Entry<YangInstanceIdentifier.PathArgument, DataContainerChild<? extends YangInstanceIdentifier.PathArgument, ?>> entry) {
+        // if leaf,just builds delete right away
+        LOG.debug("Processing {} as leaf", topLevelIdentifier);
+        return Collections.singletonList(new NormalizedNodeUpdate(YangInstanceIdentifier.builder(topLevelIdentifier)
+                .node(entry.getKey()).build(), entry.getValue(), null));
+    }
+}