HBASE-7897 Add support for tags to Cell Interface

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1480430 13f79535-47bb-0310-9956-ffa450edef68

hbase-client/src/test/java/org/apache/hadoop/hbase/ipc/TestPayloadCarryingRpcController.java

@@ -157,6 +157,24 @@ public class TestPayloadCarryingRpcController {
               public int getValueLength() {
                 return Bytes.SIZEOF_INT;
               }
+
+              @Override
+              public int getTagsOffset() {
+                // TODO Auto-generated method stub
+                return 0;
+              }
+
+              @Override
+              public int getTagsLength() {
+                // TODO Auto-generated method stub
+                return 0;
+              }
+
+              @Override
+              public byte[] getTagsArray() {
+                // TODO Auto-generated method stub
+                return null;
+              }
             };
           }
 

hbase-common/src/main/java/org/apache/hadoop/hbase/Cell.java

@@ -90,7 +90,7 @@ public interface Cell {
   byte[] getFamilyArray();
 
   /**
-   * @return Array index of first row byte
+   * @return Array index of first family byte
    */
   int getFamilyOffset();
 
@@ -167,5 +167,20 @@ public interface Cell {
    * @return Number of value bytes.  Must be < valueArray.length - offset.
    */
   int getValueLength();
+  
+  /**
+   * @return the tags byte array
+   */
+  byte[] getTagsArray();
+
+  /**
+   * @return the first offset where the tags start in the Cell
+   */
+  int getTagsOffset();
+  
+  /**
+   * @return the total length of the tags in the Cell.
+   */
+  int getTagsLength();
 
 }

hbase-common/src/main/java/org/apache/hadoop/hbase/KeyValue.java

@@ -873,7 +873,7 @@ public class KeyValue implements Cell, HeapSize, Cloneable {
   /**
    * Clones a KeyValue.  This creates a copy, re-allocating the buffer.
    * @return Fully copied clone of this KeyValue
-   * @throws CloneNotSupportedException 
+   * @throws CloneNotSupportedException
    */
   @Override
   public KeyValue clone() throws CloneNotSupportedException {
@@ -2806,4 +2806,19 @@ public class KeyValue implements Cell, HeapSize, Cloneable {
     sum += Bytes.SIZEOF_LONG;// memstoreTS
     return ClassSize.align(sum);
   }
+
+  @Override
+  public int getTagsOffset() {
+    throw new UnsupportedOperationException("Not implememnted");
+  }
+
+  @Override
+  public int getTagsLength() {
+    throw new UnsupportedOperationException("Not implememnted");
+  }
+
+  @Override
+  public byte[] getTagsArray() {
+    throw new UnsupportedOperationException("Not implememnted");
+  }
 }

hbase-prefix-tree/src/main/java/org/apache/hadoop/hbase/codec/prefixtree/decode/PrefixTreeCell.java

@@ -194,4 +194,18 @@ public class PrefixTreeCell implements Cell, Comparable<Cell> {
     return kv.toString();
   }
 
+  @Override
+  public int getTagsOffset() {
+    throw new UnsupportedOperationException("Not implemented");
+  }
+
+  @Override
+  public int getTagsLength() {
+    throw new UnsupportedOperationException("Not implemented");
+  }
+
+  @Override
+  public byte[] getTagsArray() {
+    throw new UnsupportedOperationException("Not implemented");
+  }
 }