Implement a default result serializer factory provider in Algebricks.
git-svn-id: https://hyracks.googlecode.com/svn/branches/fullstack_hyracks_result_distribution@3052 123451ca-8445-de46-9d55-352943316053
diff --git a/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/serializer/ResultSerializerFactoryProvider.java b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/serializer/ResultSerializerFactoryProvider.java
new file mode 100644
index 0000000..4f28c81
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+++ b/algebricks/algebricks-runtime/src/main/java/edu/uci/ics/hyracks/algebricks/runtime/serializer/ResultSerializerFactoryProvider.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2009-2010 by The Regents of the University of California
+ * 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 from
+ *
+ * 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 edu.uci.ics.hyracks.algebricks.runtime.serializer;
+
+import java.io.PrintStream;
+import java.nio.BufferOverflowException;
+
+import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
+import edu.uci.ics.hyracks.algebricks.data.IAWriter;
+import edu.uci.ics.hyracks.algebricks.data.IAWriterFactory;
+import edu.uci.ics.hyracks.algebricks.data.IPrinterFactory;
+import edu.uci.ics.hyracks.algebricks.data.IResultSerializerFactoryProvider;
+import edu.uci.ics.hyracks.api.comm.IFrameTupleAccessor;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializer;
+import edu.uci.ics.hyracks.api.dataflow.value.IResultSerializerFactory;
+import edu.uci.ics.hyracks.api.dataflow.value.RecordDescriptor;
+import edu.uci.ics.hyracks.api.exceptions.HyracksDataException;
+
+public class ResultSerializerFactoryProvider implements IResultSerializerFactoryProvider {
+ private static final long serialVersionUID = 1L;
+
+ public static final ResultSerializerFactoryProvider INSTANCE = new ResultSerializerFactoryProvider();
+
+ private ResultSerializerFactoryProvider() {
+ }
+
+ @Override
+ public IResultSerializerFactory getAqlResultSerializerFactoryProvider(final int[] fields,
+ final IPrinterFactory[] printerFactories, final IAWriterFactory writerFactory) {
+ return new IResultSerializerFactory() {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public IResultSerializer createResultSerializer(RecordDescriptor inputRecordDesc, PrintStream printStream) {
+ final IAWriter writer = writerFactory.createWriter(fields, printStream, printerFactories,
+ inputRecordDesc);
+
+ return new IResultSerializer() {
+ private static final long serialVersionUID = 1L;
+
+ @Override
+ public void init() throws HyracksDataException {
+ try {
+ writer.init();
+ } catch (AlgebricksException e) {
+ throw new HyracksDataException(e);
+ }
+ }
+
+ @Override
+ public boolean appendTuple(IFrameTupleAccessor tAccess, int tIdx) throws HyracksDataException {
+ try {
+ writer.printTuple(tAccess, tIdx);
+ } catch (BufferOverflowException e) {
+ return false;
+ } catch (AlgebricksException e) {
+ throw new HyracksDataException(e);
+ }
+ return true;
+ }
+ };
+ }
+ };
+ }
+}