Added taggable record type

nephele/nephele-common/src/main/java/eu/stratosphere/nephele/types/AbstractTaggableRecord.java

@@ -0,0 +1,57 @@
+/***********************************************************************************************************************
+ *
+ * Copyright (C) 2010 by the Stratosphere project (http:https://stratosphere.eu)
+ *
+ * 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:https://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 eu.stratosphere.nephele.types;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+
+public abstract class AbstractTaggableRecord implements Record {
+
+ private byte[] tag = null;
+
+ public void setTag(final byte[] tag) {
+ this.tag = tag;
+ }
+
+ public byte[] getTag() {
+
+ return this.tag;
+ }
+
+ @Override
+ public void write(final DataOutput out) throws IOException {
+
+ if (this.tag == null) {
+ out.writeBoolean(false);
+ } else {
+ out.writeBoolean(true);
+ out.writeShort((short) this.tag.length);
+ out.write(this.tag);
+ }
+
+ }
+
+ @Override
+ public void read(final DataInput in) throws IOException {
+
+ if (in.readBoolean()) {
+ final short length = in.readShort();
+ this.tag = new byte[length];
+ in.readFully(this.tag);
+ }
+ }
+}