/
PrimitiveQueryType.java
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/
PrimitiveQueryType.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.core.scan.complextypes;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Map;
import org.apache.carbondata.core.cache.dictionary.Dictionary;
import org.apache.carbondata.core.constants.CarbonCommonConstants;
import org.apache.carbondata.core.datastore.chunk.DimensionColumnPage;
import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
import org.apache.carbondata.core.keygenerator.directdictionary.DirectDictionaryGenerator;
import org.apache.carbondata.core.keygenerator.directdictionary.DirectDictionaryKeyGeneratorFactory;
import org.apache.carbondata.core.keygenerator.mdkey.Bits;
import org.apache.carbondata.core.metadata.datatype.DataType;
import org.apache.carbondata.core.metadata.datatype.DataTypes;
import org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;
import org.apache.carbondata.core.scan.filter.GenericQueryType;
import org.apache.carbondata.core.scan.processor.RawBlockletColumnChunks;
import org.apache.carbondata.core.util.ByteUtil;
import org.apache.carbondata.core.util.DataTypeUtil;
public class PrimitiveQueryType extends ComplexQueryType implements GenericQueryType {
private String name;
private String parentName;
private int keySize;
private Dictionary dictionary;
private org.apache.carbondata.core.metadata.datatype.DataType dataType;
private boolean isDirectDictionary;
private boolean isDictionary;
private DirectDictionaryGenerator directDictGenForDate;
public PrimitiveQueryType(String name, String parentName, int blockIndex,
DataType dataType, int keySize,
Dictionary dictionary, boolean isDirectDictionary) {
super(name, parentName, blockIndex);
this.dataType = dataType;
this.keySize = keySize;
this.dictionary = dictionary;
this.name = name;
this.parentName = parentName;
this.isDirectDictionary = isDirectDictionary;
this.isDictionary = (dictionary != null && !isDirectDictionary);
this.directDictGenForDate =
DirectDictionaryKeyGeneratorFactory.getDirectDictionaryGenerator(DataTypes.DATE);
}
@Override public void addChildren(GenericQueryType children) {
}
@Override public String getName() {
return name;
}
@Override public void setName(String name) {
this.name = name;
}
@Override public String getParentName() {
return parentName;
}
@Override public void setParentName(String parentName) {
this.parentName = parentName;
}
@Override public int getColsCount() {
return 1;
}
@Override
public void parseBlocksAndReturnComplexColumnByteArray(DimensionRawColumnChunk[] rawColumnChunks,
DimensionColumnPage[][] dimensionColumnPages, int rowNumber, int pageNumber,
DataOutputStream dataOutputStream) throws IOException {
byte[] currentVal =
copyBlockDataChunk(rawColumnChunks, dimensionColumnPages, rowNumber, pageNumber);
if (!this.isDictionary && !this.isDirectDictionary) {
dataOutputStream.writeShort(currentVal.length);
}
dataOutputStream.write(currentVal);
}
@Override public void fillRequiredBlockData(RawBlockletColumnChunks blockChunkHolder)
throws IOException {
readBlockDataChunk(blockChunkHolder);
}
@Override public Object getDataBasedOnDataType(ByteBuffer dataBuffer) {
return getDataObject(dataBuffer, -1);
}
@Override public Object getDataBasedOnColumn(ByteBuffer dataBuffer, CarbonDimension parent,
CarbonDimension child) {
Object actualData;
if (parent.getOrdinal() != child.getOrdinal() || null == dataBuffer || !dataBuffer
.hasRemaining()) {
return null;
}
int size;
if (!DataTypeUtil.isFixedSizeDataType(child.getDataType())) {
size = dataBuffer.array().length;
} else if (child.getDataType() == DataTypes.TIMESTAMP) {
size = DataTypes.LONG.getSizeInBytes();
} else {
size = child.getDataType().getSizeInBytes();
}
actualData = getDataObject(dataBuffer, size);
return actualData;
}
private Object getDataObject(ByteBuffer dataBuffer, int size) {
Object actualData;
if (isDirectDictionary) {
// Direct Dictionary Column
byte[] data = new byte[keySize];
dataBuffer.get(data);
Bits bit = new Bits(new int[] { keySize * 8 });
int surrgateValue = (int) bit.getKeyArray(data, 0)[0];
DirectDictionaryGenerator directDictionaryGenerator =
DirectDictionaryKeyGeneratorFactory.getDirectDictionaryGenerator(dataType);
actualData = directDictionaryGenerator.getValueFromSurrogate(surrgateValue);
} else if (!isDictionary) {
if (size == -1) {
size = dataBuffer.getShort();
}
byte[] value = new byte[size];
dataBuffer.get(value, 0, size);
if (dataType == DataTypes.DATE) {
if (value.length == 0) {
actualData = null;
} else {
actualData = this.directDictGenForDate.getValueFromSurrogate(
ByteUtil.toXorInt(value, 0, CarbonCommonConstants.INT_SIZE_IN_BYTE));
}
} else {
actualData = DataTypeUtil.getDataBasedOnDataTypeForNoDictionaryColumn(value, this.dataType);
}
} else {
// Dictionary Column
byte[] data = new byte[keySize];
dataBuffer.get(data);
Bits bit = new Bits(new int[] { keySize * 8 });
int surrgateValue = (int) bit.getKeyArray(data, 0)[0];
String dictionaryValueForKey = dictionary.getDictionaryValueForKey(surrgateValue);
actualData = DataTypeUtil.getDataBasedOnDataType(dictionaryValueForKey, this.dataType);
}
return actualData;
}
@Override public Object getDataBasedOnColumnList(Map<CarbonDimension, ByteBuffer> childBuffer,
CarbonDimension presentColumn) {
return getDataBasedOnColumn(childBuffer.get(presentColumn), presentColumn, presentColumn);
}
}