Author: rding
Date: Wed Jan 20 20:59:46 2010
New Revision: 901380
URL: http://svn.apache.org/viewvc?rev=901380&view=rev
Log:
PIG-1090: Update sources to reflect recent changes in load-store interfaces
Added:
hadoop/pig/branches/load-store-redesign/src/org/apache/pig/StoreMetadata.java
Added:
hadoop/pig/branches/load-store-redesign/src/org/apache/pig/StoreMetadata.java
URL:
http://svn.apache.org/viewvc/hadoop/pig/branches/load-store-redesign/src/org/apache/pig/StoreMetadata.java?rev=901380&view=auto
==============================================================================
---
hadoop/pig/branches/load-store-redesign/src/org/apache/pig/StoreMetadata.java
(added)
+++
hadoop/pig/branches/load-store-redesign/src/org/apache/pig/StoreMetadata.java
Wed Jan 20 20:59:46 2010
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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://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 org.apache.pig;
+
+import java.io.IOException;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.pig.ResourceSchema;
+import org.apache.pig.ResourceStatistics;
+
+/**
+ * This interface defines how to write metadata related to data to be loaded.
+ * If a given store function does not implement this interface, it will be
assumed that it
+ * is unable to record metadata about the associated data.
+ */
+
+public interface StoreMetadata {
+
+ /**
+ * Store statistics about the data being written.
+ *
+ * @throws IOException
+ */
+ void storeStatistics(ResourceStatistics stats, String location,
Configuration conf) throws IOException;
+
+ /**
+ * Store schema of the data being written
+ *
+ * @throws IOException
+ */
+ void storeSchema(ResourceSchema schema, String location, Configuration
conf) throws IOException;
+}
