HONEYCOMB-431: add validation support to Writers

This patch introduces FlatWriterRegistry.validateModifications.
Implementation iterates over writersOrder following bulkUpdate logic
to properly support subtree writers case.

Writers are now cabable of validating modifications.
Commonly used implementations (GenericWriter and GenericListWriter)
delegate validation capbility to Validators.

Change-Id: If7a0bb0838c0b8f2c0393c989f3b03853a2ea679
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericWriter.java b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericWriter.java
index 086936e38..bfdf072c0 100644
--- a/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericWriter.java
+++ b/infra/translate-impl/src/main/java/io/fd/honeycomb/translate/impl/write/GenericWriter.java
@@ -16,9 +16,10 @@
 
 package io.fd.honeycomb.translate.impl.write;
 
-import io.fd.honeycomb.translate.write.WriteContext;
 import io.fd.honeycomb.translate.spi.write.WriterCustomizer;
 import io.fd.honeycomb.translate.util.write.AbstractGenericWriter;
+import io.fd.honeycomb.translate.write.Validator;
+import io.fd.honeycomb.translate.write.WriteContext;
 import io.fd.honeycomb.translate.write.WriteFailedException;
 import javax.annotation.Nonnull;
 import org.opendaylight.yangtools.yang.binding.DataObject;
@@ -39,7 +40,13 @@ public final class GenericWriter<D extends DataObject> extends AbstractGenericWr
                          @Nonnull final WriterCustomizer<D> customizer) {
         super(type, isUpdateSupported(customizer));
         this.customizer = customizer;
+    }
 
+    public GenericWriter(@Nonnull final InstanceIdentifier<D> type,
+                         @Nonnull final WriterCustomizer<D> customizer,
+                         @Nonnull final Validator<D> validator) {
+        super(type, isUpdateSupported(customizer), validator);
+        this.customizer = customizer;
     }
 
     static boolean isUpdateSupported(final @Nonnull WriterCustomizer<?> customizer) {