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Posted to commits@hbase.apache.org by ap...@apache.org on 2009/05/19 21:14:11 UTC
svn commit: r776420 -
/hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java
Author: apurtell
Date: Tue May 19 19:14:11 2009
New Revision: 776420
URL: http://svn.apache.org/viewvc?rev=776420&view=rev
Log:
add missing file from last commit
Added:
hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java
Added: hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java
URL: http://svn.apache.org/viewvc/hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java?rev=776420&view=auto
==============================================================================
--- hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java (added)
+++ hadoop/hbase/trunk_on_hadoop-0.18.3/src/java/org/apache/hadoop/hbase/regionserver/tableindexed/IndexMaintenanceUtils.java Tue May 19 19:14:11 2009
@@ -0,0 +1,73 @@
+/**
+ * Copyright 2008 The Apache Software Foundation 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.hadoop.hbase.regionserver.tableindexed;
+
+import java.util.SortedMap;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.hbase.client.tableindexed.IndexSpecification;
+import org.apache.hadoop.hbase.client.tableindexed.IndexedTable;
+import org.apache.hadoop.hbase.io.BatchUpdate;
+import org.apache.hadoop.hbase.util.Bytes;
+
+/**
+ * Singleton class for index maintence logic.
+ */
+public class IndexMaintenanceUtils {
+
+ private static final Log LOG = LogFactory.getLog(IndexMaintenanceUtils.class);
+
+ public static BatchUpdate createIndexUpdate(final IndexSpecification indexSpec, final byte[] row,
+ final SortedMap<byte[], byte[]> columnValues) {
+ byte[] indexRow = indexSpec.getKeyGenerator().createIndexKey(row, columnValues);
+ BatchUpdate update = new BatchUpdate(indexRow);
+
+ update.put(IndexedTable.INDEX_BASE_ROW_COLUMN, row);
+
+ for (byte[] col : indexSpec.getIndexedColumns()) {
+ byte[] val = columnValues.get(col);
+ if (val == null) {
+ throw new RuntimeException("Unexpected missing column value. [" + Bytes.toString(col) + "]");
+ }
+ update.put(col, val);
+ }
+
+ for (byte[] col : indexSpec.getAdditionalColumns()) {
+ byte[] val = columnValues.get(col);
+ if (val != null) {
+ update.put(col, val);
+ }
+ }
+
+ return update;
+ }
+
+ /**
+ * Ask if this update does apply to the index.
+ *
+ * @param indexSpec
+ * @param b
+ * @return true if possibly apply.
+ */
+ public static boolean doesApplyToIndex(final IndexSpecification indexSpec,
+ final SortedMap<byte[], byte[]> columnValues) {
+
+ for (byte[] neededCol : indexSpec.getIndexedColumns()) {
+ if (!columnValues.containsKey(neededCol)) {
+ LOG.debug("Index [" + indexSpec.getIndexId() + "] can't be updated because ["
+ + Bytes.toString(neededCol) + "] is missing");
+ return false;
+ }
+ }
+ return true;
+ }
+}