HONEYCOMB-359 - Wildcarded writers

Adds option to specify subtree writer that can handle whole subtree
of nodes without having whole subtree specified. Its checking
if node is children at runtime, rather than having pre-computed tree

Change-Id: Ic46f2bd6de84f0dd14865825399f5a90a1f80859
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

1 files changed, 10 insertions, 1 deletions

diff --git a/infra/translate-api/src/main/java/io/fd/honeycomb/translate/write/Writer.java b/infra/translate-api/src/main/java/io/fd/honeycomb/translate/write/Writer.java
index 1a16b72e6..18573e58a 100644
--- a/infra/translate-api/src/main/java/io/fd/honeycomb/translate/write/Writer.java
+++ b/infra/translate-api/src/main/java/io/fd/honeycomb/translate/write/Writer.java
@@ -47,8 +47,17 @@ public interface Writer<D extends DataObject> extends SubtreeManager<D> {
                              @Nonnull final WriteContext ctx) throws WriteFailedException;
 
     /**
-     * Indicates whether there is direct support for updating nodes handled by this writer,
+     * Indicates whether there is direct support for updating nodes handled by writer,
      * or they must be broken up to individual deletes and creates.
      */
     boolean supportsDirectUpdate();
+
+    /**
+     * Returns true if node identified by this identifier can be processes by this writer
+     *
+     * @param instanceIdentifier identifier to be checked
+     */
+    default boolean canProcess(@Nonnull final InstanceIdentifier<? extends DataObject> instanceIdentifier) {
+        return getManagedDataObjectType().equals(instanceIdentifier);
+    }
 }