/
FluoMutationGenerator.java
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/
FluoMutationGenerator.java
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/*
* 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.fluo.mapreduce;
import java.nio.charset.StandardCharsets;
import org.apache.accumulo.core.client.BatchWriter;
import org.apache.accumulo.core.client.mapreduce.AccumuloOutputFormat;
import org.apache.accumulo.core.data.Mutation;
import org.apache.fluo.accumulo.util.ColumnType;
import org.apache.fluo.accumulo.values.WriteValue;
import org.apache.fluo.api.data.Bytes;
import org.apache.fluo.api.data.Column;
import org.apache.fluo.api.data.RowColumnValue;
import org.apache.fluo.core.util.ByteUtil;
import org.apache.fluo.core.util.Flutation;
import org.apache.hadoop.io.Text;
/**
* This class generates Accumulo mutations that are in the Fluo data format. This class is intended
* to be used with {@link AccumuloOutputFormat} or {@link BatchWriter} inorder to seed an
* initialized Fluo table on which no transactions have executed.
*/
public class FluoMutationGenerator {
private Mutation mutation;
/**
* Creates builder for given row
*
* @param row Will be encoded using UTF-8
*/
public FluoMutationGenerator(CharSequence row) {
mutation = new Mutation(row);
}
public FluoMutationGenerator(Text row) {
mutation = new Mutation(row);
}
public FluoMutationGenerator(Bytes row) {
mutation = new Mutation(row.toArray());
}
public FluoMutationGenerator(byte[] row) {
mutation = new Mutation(row);
}
public FluoMutationGenerator(RowColumnValue rcv) {
this(rcv.getRow());
put(rcv.getColumn(), rcv.getValue());
}
/**
* Puts value at given column
*
* @param value Will be encoded using UTF-8
*/
public FluoMutationGenerator put(Column col, CharSequence value) {
return put(col, value.toString().getBytes(StandardCharsets.UTF_8));
}
public FluoMutationGenerator put(Column col, Text value) {
return put(col, ByteUtil.toBytes(value));
}
public FluoMutationGenerator put(Column col, Bytes value) {
return put(col, value.toArray());
}
public FluoMutationGenerator put(Column col, byte[] value) {
Flutation.put(mutation, col, ColumnType.DATA.encode(0), value);
Flutation.put(mutation, col, ColumnType.WRITE.encode(1), WriteValue.encode(0, false, false));
return this;
}
public Mutation build() {
Mutation ret = mutation;
mutation = null;
return ret;
}
}