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ArrayDataType.java
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ArrayDataType.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.processing.datatypes;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import org.apache.carbondata.core.devapi.DictionaryGenerationException;
import org.apache.carbondata.core.keygenerator.KeyGenException;
import org.apache.carbondata.core.keygenerator.KeyGenerator;
import org.apache.carbondata.processing.newflow.complexobjects.ArrayObject;
/**
* Array DataType stateless object used in data loading
*/
public class ArrayDataType implements GenericDataType<ArrayObject> {
/**
* child columns
*/
private GenericDataType children;
/**
* name of the column
*/
private String name;
/**
* column unique id
*/
private String columnId;
/**
* parent column name
*/
private String parentname;
/**
* output array index
*/
private int outputArrayIndex;
/**
* current data counter
*/
private int dataCounter;
private ArrayDataType(int outputArrayIndex, int dataCounter, GenericDataType children) {
this.outputArrayIndex = outputArrayIndex;
this.dataCounter = dataCounter;
this.children = children;
}
/**
* constructor
* @param name
* @param parentname
* @param columnId
*/
public ArrayDataType(String name, String parentname, String columnId) {
this.name = name;
this.parentname = parentname;
this.columnId = columnId;
}
/*
* to add child dimensions
*/
@Override
public void addChildren(GenericDataType children) {
if (this.getName().equals(children.getParentname())) {
this.children = children;
} else {
this.children.addChildren(children);
}
}
/*
* return column name
*/
@Override
public String getName() {
return name;
}
/*
* return column unique id
*/
@Override
public String getColumnId() {
return columnId;
}
/*
* set parent name
*/
@Override
public String getParentname() {
return parentname;
}
/*
* returns all primitive type child columns
*/
@Override
public void getAllPrimitiveChildren(List<GenericDataType> primitiveChild) {
if (children instanceof PrimitiveDataType) {
primitiveChild.add(children);
} else {
children.getAllPrimitiveChildren(primitiveChild);
}
}
/*
* return surrogate index
*/
@Override
public int getSurrogateIndex() {
return 0;
}
/*
* set surrogate index
*/
@Override
public void setSurrogateIndex(int surrIndex) {
}
@Override
public void writeByteArray(ArrayObject input, DataOutputStream dataOutputStream)
throws IOException, DictionaryGenerationException {
if (input == null) {
dataOutputStream.writeInt(1);
children.writeByteArray(null, dataOutputStream);
} else {
Object[] data = input.getData();
dataOutputStream.writeInt(data.length);
for (Object eachInput : data) {
children.writeByteArray(eachInput, dataOutputStream);
}
}
}
@Override
public void fillCardinality(List<Integer> dimCardWithComplex) {
dimCardWithComplex.add(0);
children.fillCardinality(dimCardWithComplex);
}
/**
* parse byte array and bit pack
*/
@Override
public void parseAndBitPack(ByteBuffer byteArrayInput, DataOutputStream dataOutputStream,
KeyGenerator[] generator) throws IOException, KeyGenException {
int dataLength = byteArrayInput.getInt();
dataOutputStream.writeInt(dataLength);
if (children instanceof PrimitiveDataType) {
dataOutputStream.writeInt(generator[children.getSurrogateIndex()].getKeySizeInBytes());
}
for (int i = 0; i < dataLength; i++) {
children.parseAndBitPack(byteArrayInput, dataOutputStream, generator);
}
}
/*
* get children column count
*/
@Override
public int getColsCount() {
return children.getColsCount() + 1;
}
/*
* set array index
*/
@Override
public void setOutputArrayIndex(int outputArrayIndex) {
this.outputArrayIndex = outputArrayIndex;
children.setOutputArrayIndex(outputArrayIndex + 1);
}
/*
* get current max array index
*/
@Override
public int getMaxOutputArrayIndex() {
int currentMax = outputArrayIndex;
int childMax = children.getMaxOutputArrayIndex();
if (childMax > currentMax) {
currentMax = childMax;
}
return currentMax;
}
/*
* split byte array and return metadata and primitive column data
*/
@Override
public void getColumnarDataForComplexType(List<ArrayList<byte[]>> columnsArray,
ByteBuffer inputArray) {
ByteBuffer b = ByteBuffer.allocate(8);
int dataLength = inputArray.getInt();
b.putInt(dataLength);
if (dataLength == 0) {
b.putInt(0);
} else {
b.putInt(children.getDataCounter());
}
columnsArray.get(this.outputArrayIndex).add(b.array());
if (children instanceof PrimitiveDataType) {
((PrimitiveDataType) children).setKeySize(inputArray.getInt());
}
for (int i = 0; i < dataLength; i++) {
children.getColumnarDataForComplexType(columnsArray, inputArray);
}
this.dataCounter++;
}
/*
* return data counter
*/
@Override
public int getDataCounter() {
return this.dataCounter;
}
/*
* fill agg key blocks
*/
@Override
public void fillAggKeyBlock(List<Boolean> aggKeyBlockWithComplex, boolean[] aggKeyBlock) {
aggKeyBlockWithComplex.add(false);
children.fillAggKeyBlock(aggKeyBlockWithComplex, aggKeyBlock);
}
/*
* fill key size
*/
@Override
public void fillBlockKeySize(List<Integer> blockKeySizeWithComplex, int[] primitiveBlockKeySize) {
blockKeySizeWithComplex.add(8);
children.fillBlockKeySize(blockKeySizeWithComplex, primitiveBlockKeySize);
}
/*
* fill cardinality
*/
@Override
public void fillCardinalityAfterDataLoad(List<Integer> dimCardWithComplex,
int[] maxSurrogateKeyArray) {
dimCardWithComplex.add(0);
children.fillCardinalityAfterDataLoad(dimCardWithComplex, maxSurrogateKeyArray);
}
@Override
public GenericDataType<ArrayObject> deepCopy() {
return new ArrayDataType(this.outputArrayIndex, this.dataCounter, this.children.deepCopy());
}
}