/
IntegerStreamReader.java
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/
IntegerStreamReader.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.carbondata.presto.readers;
import org.apache.carbondata.core.cache.dictionary.Dictionary;
import org.apache.carbondata.core.metadata.datatype.DataType;
import org.apache.carbondata.core.metadata.datatype.DataTypes;
import org.apache.carbondata.core.scan.result.vector.impl.CarbonColumnVectorImpl;
import org.apache.carbondata.core.util.DataTypeUtil;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.type.IntegerType;
import com.facebook.presto.spi.type.Type;
public class IntegerStreamReader extends CarbonColumnVectorImpl
implements PrestoVectorBlockBuilder {
protected int batchSize;
protected Type type = IntegerType.INTEGER;
protected BlockBuilder builder;
private Dictionary dictionary;
public IntegerStreamReader(int batchSize, DataType dataType, Dictionary dictionary) {
super(batchSize, dataType);
this.batchSize = batchSize;
this.builder = type.createBlockBuilder(null, batchSize);
this.dictionary = dictionary;
}
@Override public Block buildBlock() {
return builder.build();
}
@Override public void setBatchSize(int batchSize) {
this.batchSize = batchSize;
}
@Override public void putInt(int rowId, int value) {
if (dictionary == null) {
type.writeLong(builder, value);
} else {
Object data = DataTypeUtil
.getDataBasedOnDataType(dictionary.getDictionaryValueForKey(value), DataTypes.INT);
if (data != null) {
type.writeLong(builder, ((Integer) data).longValue());
} else {
builder.appendNull();
}
}
}
@Override public void putNull(int rowId) {
builder.appendNull();
}
@Override public void reset() {
builder = type.createBlockBuilder(null, batchSize);
}
}