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Posted to commits@hbase.apache.org by ec...@apache.org on 2013/04/08 22:57:42 UTC
svn commit: r1465783 - in /hbase/branches/0.95:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java
hbase-server/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java
Author: eclark
Date: Mon Apr 8 20:57:42 2013
New Revision: 1465783
URL: http://svn.apache.org/r1465783
Log:
HBASE-8293 Move BigDecimalColumnInterpreter into hbase-client
Added:
hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java
Removed:
hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java
Added: hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java
URL: http://svn.apache.org/viewvc/hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java?rev=1465783&view=auto
==============================================================================
--- hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java (added)
+++ hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/coprocessor/BigDecimalColumnInterpreter.java Mon Apr 8 20:57:42 2013
@@ -0,0 +1,147 @@
+/*
+ *
+ * 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.client.coprocessor;
+
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+
+import org.apache.hadoop.classification.InterfaceAudience;
+import org.apache.hadoop.classification.InterfaceStability;
+import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.coprocessor.ColumnInterpreter;
+import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.BigDecimalMsg;
+import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.EmptyMsg;
+import org.apache.hadoop.hbase.util.Bytes;
+
+import com.google.protobuf.ByteString;
+
+/**
+ * ColumnInterpreter for doing Aggregation's with BigDecimal columns. This class
+ * is required at the RegionServer also.
+ *
+ */
+@InterfaceAudience.Public
+@InterfaceStability.Evolving
+public class BigDecimalColumnInterpreter extends ColumnInterpreter<BigDecimal, BigDecimal,
+ EmptyMsg, BigDecimalMsg, BigDecimalMsg> {
+
+ @Override
+ public BigDecimal getValue(byte[] colFamily, byte[] colQualifier, KeyValue kv)
+ throws IOException {
+ if (kv == null || kv.getValue() == null) {
+ return null;
+ }
+ return Bytes.toBigDecimal(kv.getValue()).setScale(2, RoundingMode.HALF_EVEN);
+ }
+
+ @Override
+ public BigDecimal add(BigDecimal bd1, BigDecimal bd2) {
+ if (bd1 == null ^ bd2 == null) {
+ return (bd1 == null) ? bd2 : bd1; // either of one is null.
+ }
+ if (bd1 == null) {
+ return null;
+ }
+ return bd1.add(bd2);
+ }
+
+ @Override
+ public int compare(final BigDecimal bd1, final BigDecimal bd2) {
+ if (bd1 == null ^ bd2 == null) {
+ return bd1 == null ? -1 : 1; // either of one is null.
+ }
+ if (bd1 == null) {
+ return 0; // both are null
+ }
+ return bd1.compareTo(bd2); // natural ordering.
+ }
+
+ @Override
+ public BigDecimal getMaxValue() {
+ return BigDecimal.valueOf(Double.MAX_VALUE);
+ }
+
+ @Override
+ public BigDecimal increment(BigDecimal bd) {
+ return bd == null ? null : (bd.add(BigDecimal.ONE));
+ }
+
+ @Override
+ public BigDecimal multiply(BigDecimal bd1, BigDecimal bd2) {
+ return (bd1 == null || bd2 == null) ? null : bd1.multiply(bd2)
+ .setScale(2,RoundingMode.HALF_EVEN);
+ }
+
+ @Override
+ public BigDecimal getMinValue() {
+ return BigDecimal.valueOf(Double.MIN_VALUE);
+ }
+
+ @Override
+ public double divideForAvg(BigDecimal bd1, Long l2) {
+ return (l2 == null || bd1 == null) ? Double.NaN : (bd1.doubleValue() / l2
+ .doubleValue());
+ }
+
+ @Override
+ public BigDecimal castToReturnType(BigDecimal bd) {
+ return bd;
+ }
+
+ @Override
+ public BigDecimal castToCellType(BigDecimal bd) {
+ return bd;
+ }
+
+ @Override
+ public EmptyMsg getRequestData() {
+ return EmptyMsg.getDefaultInstance();
+ }
+
+ @Override
+ public void initialize(EmptyMsg msg) {
+ //nothing
+ }
+
+ private BigDecimalMsg getProtoForType(BigDecimal t) {
+ BigDecimalMsg.Builder builder = BigDecimalMsg.newBuilder();
+ return builder.setBigdecimalMsg(ByteString.copyFrom(Bytes.toBytes(t))).build();
+ }
+
+ @Override
+ public BigDecimalMsg getProtoForCellType(BigDecimal t) {
+ return getProtoForType(t);
+ }
+
+ @Override
+ public BigDecimalMsg getProtoForPromotedType(BigDecimal s) {
+ return getProtoForType(s);
+ }
+
+ @Override
+ public BigDecimal getPromotedValueFromProto(BigDecimalMsg r) {
+ return Bytes.toBigDecimal(r.getBigdecimalMsg().toByteArray());
+ }
+
+ @Override
+ public BigDecimal getCellValueFromProto(BigDecimalMsg q) {
+ return Bytes.toBigDecimal(q.getBigdecimalMsg().toByteArray());
+ }
+}