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StructDataType.java
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StructDataType.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.StructObject;
/**
* Struct DataType stateless object used in data loading
*/
public class StructDataType implements GenericDataType<StructObject> {
/**
* children columns
*/
private List<GenericDataType> children = new ArrayList<GenericDataType>();
/**
* name of the column
*/
private String name;
/**
* parent column name
*/
private String parentname;
/**
* column unique id
*/
private String columnId;
/**
* output array index
*/
private int outputArrayIndex;
/**
* data counter
*/
private int dataCounter;
private StructDataType(List<GenericDataType> children, int outputArrayIndex, int dataCounter) {
this.children = children;
this.outputArrayIndex = outputArrayIndex;
this.dataCounter = dataCounter;
}
/**
* constructor
* @param name
* @param parentname
* @param columnId
*/
public StructDataType(String name, String parentname, String columnId) {
this.name = name;
this.parentname = parentname;
this.columnId = columnId;
}
/*
* add child dimensions
*/
@Override
public void addChildren(GenericDataType newChild) {
if (this.getName().equals(newChild.getParentname())) {
this.children.add(newChild);
} else {
for (GenericDataType child : this.children) {
child.addChildren(newChild);
}
}
}
/*
* get column name
*/
@Override
public String getName() {
return name;
}
/*
* get parent column name
*/
@Override
public String getParentname() {
return parentname;
}
/*
* get column unique id
*/
@Override
public String getColumnId() {
return columnId;
}
/*
* get all primitive columns from complex column
*/
@Override
public void getAllPrimitiveChildren(List<GenericDataType> primitiveChild) {
for (int i = 0; i < children.size(); i++) {
GenericDataType child = children.get(i);
if (child instanceof PrimitiveDataType) {
primitiveChild.add(child);
} else {
child.getAllPrimitiveChildren(primitiveChild);
}
}
}
/*
* get surrogate index
*/
@Override
public int getSurrogateIndex() {
return 0;
}
/*
* set surrogate index
*/
@Override
public void setSurrogateIndex(int surrIndex) {
}
@Override public void writeByteArray(StructObject input, DataOutputStream dataOutputStream)
throws IOException, DictionaryGenerationException {
dataOutputStream.writeInt(children.size());
if (input == null) {
dataOutputStream.writeInt(children.size());
for (int i = 0; i < children.size(); i++) {
children.get(i).writeByteArray(null, dataOutputStream);
}
} else {
Object[] data = input.getData();
for (int i = 0; i < data.length && i < children.size(); i++) {
children.get(i).writeByteArray(data[i], dataOutputStream);
}
// For other children elements which dont have data, write empty
for (int i = data.length; i < children.size(); i++) {
children.get(i).writeByteArray(null, dataOutputStream);
}
}
}
@Override
public void fillCardinality(List<Integer> dimCardWithComplex) {
dimCardWithComplex.add(0);
for (int i = 0; i < children.size(); i++) {
children.get(i).fillCardinality(dimCardWithComplex);
}
}
/*
* parse bytearray and bit pack
*/
@Override
public void parseAndBitPack(ByteBuffer byteArrayInput, DataOutputStream dataOutputStream,
KeyGenerator[] generator) throws IOException, KeyGenException {
int childElement = byteArrayInput.getInt();
dataOutputStream.writeInt(childElement);
for (int i = 0; i < childElement; i++) {
if (children.get(i) instanceof PrimitiveDataType) {
dataOutputStream.writeInt(generator[children.get(i).getSurrogateIndex()]
.getKeySizeInBytes());
}
children.get(i).parseAndBitPack(byteArrayInput, dataOutputStream, generator);
}
}
/*
* return all columns count
*/
@Override
public int getColsCount() {
int colsCount = 1;
for (int i = 0; i < children.size(); i++) {
colsCount += children.get(i).getColsCount();
}
return colsCount;
}
/*
* set output array index
*/
@Override
public void setOutputArrayIndex(int outputArrayIndex) {
this.outputArrayIndex = outputArrayIndex++;
for (int i = 0; i < children.size(); i++) {
if (children.get(i) instanceof PrimitiveDataType) {
children.get(i).setOutputArrayIndex(outputArrayIndex++);
} else {
children.get(i).setOutputArrayIndex(outputArrayIndex++);
outputArrayIndex = getMaxOutputArrayIndex() + 1;
}
}
}
/*
* get max array index
*/
@Override
public int getMaxOutputArrayIndex() {
int currentMax = outputArrayIndex;
for (int i = 0; i < children.size(); i++) {
int childMax = children.get(i).getMaxOutputArrayIndex();
if (childMax > currentMax) {
currentMax = childMax;
}
}
return currentMax;
}
/*
* split byte array and return metadata and primitive columns
*/
@Override
public void getColumnarDataForComplexType(List<ArrayList<byte[]>> columnsArray,
ByteBuffer inputArray) {
ByteBuffer b = ByteBuffer.allocate(8);
int childElement = inputArray.getInt();
b.putInt(childElement);
if (childElement == 0) {
b.putInt(0);
} else {
b.putInt(children.get(0).getDataCounter());
}
columnsArray.get(this.outputArrayIndex).add(b.array());
for (int i = 0; i < childElement; i++) {
if (children.get(i) instanceof PrimitiveDataType) {
((PrimitiveDataType) children.get(i)).setKeySize(inputArray.getInt());
}
children.get(i).getColumnarDataForComplexType(columnsArray, inputArray);
}
this.dataCounter++;
}
/*
* return data counter
*/
@Override
public int getDataCounter() {
return this.dataCounter;
}
/*
* fill agg block
*/
@Override
public void fillAggKeyBlock(List<Boolean> aggKeyBlockWithComplex, boolean[] aggKeyBlock) {
aggKeyBlockWithComplex.add(false);
for (int i = 0; i < children.size(); i++) {
children.get(i).fillAggKeyBlock(aggKeyBlockWithComplex, aggKeyBlock);
}
}
/*
* fill keysize
*/
@Override
public void fillBlockKeySize(List<Integer> blockKeySizeWithComplex, int[] primitiveBlockKeySize) {
blockKeySizeWithComplex.add(8);
for (int i = 0; i < children.size(); i++) {
children.get(i).fillBlockKeySize(blockKeySizeWithComplex, primitiveBlockKeySize);
}
}
/*
* fill cardinality
*/
@Override
public void fillCardinalityAfterDataLoad(List<Integer> dimCardWithComplex,
int[] maxSurrogateKeyArray) {
dimCardWithComplex.add(0);
for (int i = 0; i < children.size(); i++) {
children.get(i).fillCardinalityAfterDataLoad(dimCardWithComplex, maxSurrogateKeyArray);
}
}
@Override
public GenericDataType<StructObject> deepCopy() {
List<GenericDataType> childrenClone = new ArrayList<>();
for (GenericDataType child : children) {
childrenClone.add(child.deepCopy());
}
return new StructDataType(childrenClone, this.outputArrayIndex, this.dataCounter);
}
}