/
FilterUtil.java
2337 lines (2205 loc) · 97.7 KB
/
FilterUtil.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.filter;
import java.io.IOException;
import java.math.BigDecimal;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.BitSet;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.TreeSet;
import org.apache.carbondata.common.logging.LogServiceFactory;
import org.apache.carbondata.core.cache.Cache;
import org.apache.carbondata.core.cache.CacheProvider;
import org.apache.carbondata.core.cache.CacheType;
import org.apache.carbondata.core.cache.dictionary.Dictionary;
import org.apache.carbondata.core.cache.dictionary.DictionaryChunksWrapper;
import org.apache.carbondata.core.cache.dictionary.DictionaryColumnUniqueIdentifier;
import org.apache.carbondata.core.cache.dictionary.ForwardDictionary;
import org.apache.carbondata.core.constants.CarbonCommonConstants;
import org.apache.carbondata.core.constants.CarbonV3DataFormatConstants;
import org.apache.carbondata.core.datastore.IndexKey;
import org.apache.carbondata.core.datastore.block.SegmentProperties;
import org.apache.carbondata.core.datastore.chunk.DimensionColumnPage;
import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
import org.apache.carbondata.core.keygenerator.KeyGenException;
import org.apache.carbondata.core.keygenerator.KeyGenerator;
import org.apache.carbondata.core.keygenerator.directdictionary.DirectDictionaryGenerator;
import org.apache.carbondata.core.keygenerator.directdictionary.DirectDictionaryKeyGeneratorFactory;
import org.apache.carbondata.core.keygenerator.factory.KeyGeneratorFactory;
import org.apache.carbondata.core.keygenerator.mdkey.MultiDimKeyVarLengthGenerator;
import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
import org.apache.carbondata.core.metadata.ColumnIdentifier;
import org.apache.carbondata.core.metadata.datatype.DataType;
import org.apache.carbondata.core.metadata.datatype.DataTypes;
import org.apache.carbondata.core.metadata.encoder.Encoding;
import org.apache.carbondata.core.metadata.schema.table.column.CarbonColumn;
import org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;
import org.apache.carbondata.core.metadata.schema.table.column.CarbonMeasure;
import org.apache.carbondata.core.scan.executor.exception.QueryExecutionException;
import org.apache.carbondata.core.scan.executor.util.QueryUtil;
import org.apache.carbondata.core.scan.expression.ColumnExpression;
import org.apache.carbondata.core.scan.expression.Expression;
import org.apache.carbondata.core.scan.expression.ExpressionResult;
import org.apache.carbondata.core.scan.expression.LiteralExpression;
import org.apache.carbondata.core.scan.expression.conditional.ConditionalExpression;
import org.apache.carbondata.core.scan.expression.conditional.ImplicitExpression;
import org.apache.carbondata.core.scan.expression.conditional.InExpression;
import org.apache.carbondata.core.scan.expression.conditional.ListExpression;
import org.apache.carbondata.core.scan.expression.exception.FilterIllegalMemberException;
import org.apache.carbondata.core.scan.expression.exception.FilterUnsupportedException;
import org.apache.carbondata.core.scan.expression.logical.AndExpression;
import org.apache.carbondata.core.scan.expression.logical.TrueExpression;
import org.apache.carbondata.core.scan.filter.executer.AndFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.DimColumnExecuterFilterInfo;
import org.apache.carbondata.core.scan.filter.executer.ExcludeFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.FalseFilterExecutor;
import org.apache.carbondata.core.scan.filter.executer.FilterExecuter;
import org.apache.carbondata.core.scan.filter.executer.ImplicitIncludeFilterExecutorImpl;
import org.apache.carbondata.core.scan.filter.executer.IncludeFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.MeasureColumnExecuterFilterInfo;
import org.apache.carbondata.core.scan.filter.executer.OrFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.RangeValueFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.RestructureExcludeFilterExecutorImpl;
import org.apache.carbondata.core.scan.filter.executer.RestructureIncludeFilterExecutorImpl;
import org.apache.carbondata.core.scan.filter.executer.RowLevelFilterExecuterImpl;
import org.apache.carbondata.core.scan.filter.executer.RowLevelRangeTypeExecuterFactory;
import org.apache.carbondata.core.scan.filter.executer.TrueFilterExecutor;
import org.apache.carbondata.core.scan.filter.intf.ExpressionType;
import org.apache.carbondata.core.scan.filter.intf.FilterExecuterType;
import org.apache.carbondata.core.scan.filter.intf.RowImpl;
import org.apache.carbondata.core.scan.filter.intf.RowIntf;
import org.apache.carbondata.core.scan.filter.resolver.ConditionalFilterResolverImpl;
import org.apache.carbondata.core.scan.filter.resolver.FilterResolverIntf;
import org.apache.carbondata.core.scan.filter.resolver.RowLevelFilterResolverImpl;
import org.apache.carbondata.core.scan.filter.resolver.RowLevelRangeFilterResolverImpl;
import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.ColumnResolvedFilterInfo;
import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.DimColumnResolvedFilterInfo;
import org.apache.carbondata.core.scan.filter.resolver.resolverinfo.MeasureColumnResolvedFilterInfo;
import org.apache.carbondata.core.scan.result.vector.CarbonDictionary;
import org.apache.carbondata.core.util.BitSetGroup;
import org.apache.carbondata.core.util.ByteUtil;
import org.apache.carbondata.core.util.CarbonProperties;
import org.apache.carbondata.core.util.CarbonUtil;
import org.apache.carbondata.core.util.DataTypeConverterImpl;
import org.apache.carbondata.core.util.DataTypeUtil;
import org.apache.carbondata.core.util.comparator.Comparator;
import org.apache.carbondata.core.util.comparator.SerializableComparator;
import org.apache.commons.lang.ArrayUtils;
import org.apache.log4j.Logger;
import org.roaringbitmap.RoaringBitmap;
public final class FilterUtil {
private static final Logger LOGGER =
LogServiceFactory.getLogService(FilterUtil.class.getName());
private FilterUtil() {
}
/**
* Pattern used : Visitor Pattern
* Method will create filter executer tree based on the filter resolved tree,
* in this algorithm based on the resolver instance the executers will be visited
* and the resolved surrogates will be converted to keys
*
* @param filterExpressionResolverTree
* @param segmentProperties
* @return FilterExecuter instance
*/
private static FilterExecuter createFilterExecuterTree(
FilterResolverIntf filterExpressionResolverTree, SegmentProperties segmentProperties,
Map<Integer, GenericQueryType> complexDimensionInfoMap,
List<CarbonColumn> minMaxCacheColumns) {
FilterExecuterType filterExecuterType = filterExpressionResolverTree.getFilterExecuterType();
if (null != filterExecuterType) {
switch (filterExecuterType) {
case INCLUDE:
if (null != filterExpressionResolverTree.getDimColResolvedFilterInfo()
&& null != filterExpressionResolverTree.getDimColResolvedFilterInfo()
.getFilterValues() && filterExpressionResolverTree.getDimColResolvedFilterInfo()
.getFilterValues().isOptimized()) {
return getExcludeFilterExecuter(
filterExpressionResolverTree.getDimColResolvedFilterInfo(),
filterExpressionResolverTree.getMsrColResolvedFilterInfo(), segmentProperties);
}
// return true filter expression if filter column min/max is not cached in driver
if (checkIfCurrentNodeToBeReplacedWithTrueFilterExpression(filterExpressionResolverTree,
segmentProperties, minMaxCacheColumns)) {
return new TrueFilterExecutor();
}
return getIncludeFilterExecuter(
filterExpressionResolverTree.getDimColResolvedFilterInfo(),
filterExpressionResolverTree.getMsrColResolvedFilterInfo(), segmentProperties);
case EXCLUDE:
return getExcludeFilterExecuter(
filterExpressionResolverTree.getDimColResolvedFilterInfo(),
filterExpressionResolverTree.getMsrColResolvedFilterInfo(), segmentProperties);
case OR:
return new OrFilterExecuterImpl(
createFilterExecuterTree(filterExpressionResolverTree.getLeft(), segmentProperties,
complexDimensionInfoMap, minMaxCacheColumns),
createFilterExecuterTree(filterExpressionResolverTree.getRight(), segmentProperties,
complexDimensionInfoMap, minMaxCacheColumns));
case AND:
return new AndFilterExecuterImpl(
createFilterExecuterTree(filterExpressionResolverTree.getLeft(), segmentProperties,
complexDimensionInfoMap, minMaxCacheColumns),
createFilterExecuterTree(filterExpressionResolverTree.getRight(), segmentProperties,
complexDimensionInfoMap, minMaxCacheColumns));
case ROWLEVEL_LESSTHAN:
case ROWLEVEL_LESSTHAN_EQUALTO:
case ROWLEVEL_GREATERTHAN_EQUALTO:
case ROWLEVEL_GREATERTHAN:
// return true filter expression if filter column min/max is not cached in driver
RowLevelRangeFilterResolverImpl rowLevelRangeFilterResolver =
(RowLevelRangeFilterResolverImpl) filterExpressionResolverTree;
if (checkIfCurrentNodeToBeReplacedWithTrueFilterExpression(
rowLevelRangeFilterResolver.getDimColEvaluatorInfoList(),
rowLevelRangeFilterResolver.getMsrColEvalutorInfoList(), segmentProperties,
minMaxCacheColumns)) {
return new TrueFilterExecutor();
}
return RowLevelRangeTypeExecuterFactory
.getRowLevelRangeTypeExecuter(filterExecuterType, filterExpressionResolverTree,
segmentProperties);
case RANGE:
// return true filter expression if filter column min/max is not cached in driver
if (checkIfCurrentNodeToBeReplacedWithTrueFilterExpression(filterExpressionResolverTree,
segmentProperties, minMaxCacheColumns)) {
return new TrueFilterExecutor();
}
return new RangeValueFilterExecuterImpl(
filterExpressionResolverTree.getDimColResolvedFilterInfo(),
filterExpressionResolverTree.getFilterExpression(),
((ConditionalFilterResolverImpl) filterExpressionResolverTree)
.getFilterRangeValues(segmentProperties), segmentProperties);
case TRUE:
return new TrueFilterExecutor();
case FALSE:
return new FalseFilterExecutor();
case ROWLEVEL:
default:
return new RowLevelFilterExecuterImpl(
((RowLevelFilterResolverImpl) filterExpressionResolverTree)
.getDimColEvaluatorInfoList(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree)
.getMsrColEvalutorInfoList(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getFilterExpresion(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getTableIdentifier(),
segmentProperties, complexDimensionInfoMap);
}
}
return new RowLevelFilterExecuterImpl(
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getDimColEvaluatorInfoList(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getMsrColEvalutorInfoList(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getFilterExpresion(),
((RowLevelFilterResolverImpl) filterExpressionResolverTree).getTableIdentifier(),
segmentProperties, complexDimensionInfoMap);
}
/**
* It gives filter executer based on columnar or column group
*
* @param dimColResolvedFilterInfo
* @param segmentProperties
* @return
*/
private static FilterExecuter getIncludeFilterExecuter(
DimColumnResolvedFilterInfo dimColResolvedFilterInfo,
MeasureColumnResolvedFilterInfo msrColResolvedFilterInfo,
SegmentProperties segmentProperties) {
if (null != msrColResolvedFilterInfo && msrColResolvedFilterInfo.getMeasure().isMeasure()) {
CarbonMeasure measuresFromCurrentBlock = segmentProperties
.getMeasureFromCurrentBlock(msrColResolvedFilterInfo.getMeasure().getColumnId());
if (null != measuresFromCurrentBlock) {
// update dimension and column index according to the dimension position in current block
MeasureColumnResolvedFilterInfo msrColResolvedFilterInfoCopyObject =
msrColResolvedFilterInfo.getCopyObject();
msrColResolvedFilterInfoCopyObject.setMeasure(measuresFromCurrentBlock);
msrColResolvedFilterInfoCopyObject.setColumnIndex(measuresFromCurrentBlock.getOrdinal());
msrColResolvedFilterInfoCopyObject.setType(measuresFromCurrentBlock.getDataType());
return new IncludeFilterExecuterImpl(null, msrColResolvedFilterInfoCopyObject,
segmentProperties, true);
} else {
return new RestructureIncludeFilterExecutorImpl(dimColResolvedFilterInfo,
msrColResolvedFilterInfo, true);
}
}
CarbonDimension dimension = dimColResolvedFilterInfo.getDimension();
if (dimension.hasEncoding(Encoding.IMPLICIT)) {
return new ImplicitIncludeFilterExecutorImpl(dimColResolvedFilterInfo);
} else {
CarbonDimension dimensionFromCurrentBlock =
segmentProperties.getDimensionFromCurrentBlock(dimColResolvedFilterInfo.getDimension());
if (null != dimensionFromCurrentBlock) {
// update dimension and column index according to the dimension position in current block
DimColumnResolvedFilterInfo dimColResolvedFilterInfoCopyObject =
dimColResolvedFilterInfo.getCopyObject();
dimColResolvedFilterInfoCopyObject.setDimension(dimensionFromCurrentBlock);
dimColResolvedFilterInfoCopyObject.setColumnIndex(dimensionFromCurrentBlock.getOrdinal());
return new IncludeFilterExecuterImpl(dimColResolvedFilterInfoCopyObject, null,
segmentProperties, false);
} else {
return new RestructureIncludeFilterExecutorImpl(dimColResolvedFilterInfo,
msrColResolvedFilterInfo, false);
}
}
}
/**
* check if current need to be replaced with TrueFilter expression. This will happen in case
* filter column min/max is not cached in the driver
*
* @param dimColEvaluatorInfoList
* @param msrColEvaluatorInfoList
* @param segmentProperties
* @param minMaxCacheColumns
* @return
*/
private static boolean checkIfCurrentNodeToBeReplacedWithTrueFilterExpression(
List<DimColumnResolvedFilterInfo> dimColEvaluatorInfoList,
List<MeasureColumnResolvedFilterInfo> msrColEvaluatorInfoList,
SegmentProperties segmentProperties, List<CarbonColumn> minMaxCacheColumns) {
boolean replaceCurrentNodeWithTrueFilter = false;
ColumnResolvedFilterInfo columnResolvedFilterInfo = null;
if (!msrColEvaluatorInfoList.isEmpty()) {
columnResolvedFilterInfo = msrColEvaluatorInfoList.get(0);
replaceCurrentNodeWithTrueFilter =
checkIfFilterColumnIsCachedInDriver(columnResolvedFilterInfo, segmentProperties,
minMaxCacheColumns, true);
} else {
columnResolvedFilterInfo = dimColEvaluatorInfoList.get(0);
if (!columnResolvedFilterInfo.getDimension().hasEncoding(Encoding.IMPLICIT)) {
replaceCurrentNodeWithTrueFilter =
checkIfFilterColumnIsCachedInDriver(columnResolvedFilterInfo, segmentProperties,
minMaxCacheColumns, false);
}
}
return replaceCurrentNodeWithTrueFilter;
}
/**
* check if current need to be replaced with TrueFilter expression. This will happen in case
* filter column min/max is not cached in the driver
*
* @param filterExpressionResolverTree
* @param segmentProperties
* @param minMaxCacheColumns
* @return
*/
private static boolean checkIfCurrentNodeToBeReplacedWithTrueFilterExpression(
FilterResolverIntf filterExpressionResolverTree, SegmentProperties segmentProperties,
List<CarbonColumn> minMaxCacheColumns) {
boolean replaceCurrentNodeWithTrueFilter = false;
ColumnResolvedFilterInfo columnResolvedFilterInfo = null;
if (null != filterExpressionResolverTree.getMsrColResolvedFilterInfo()) {
columnResolvedFilterInfo = filterExpressionResolverTree.getMsrColResolvedFilterInfo();
replaceCurrentNodeWithTrueFilter =
checkIfFilterColumnIsCachedInDriver(columnResolvedFilterInfo, segmentProperties,
minMaxCacheColumns, true);
} else {
columnResolvedFilterInfo = filterExpressionResolverTree.getDimColResolvedFilterInfo();
if (!columnResolvedFilterInfo.getDimension().hasEncoding(Encoding.IMPLICIT)) {
replaceCurrentNodeWithTrueFilter =
checkIfFilterColumnIsCachedInDriver(columnResolvedFilterInfo, segmentProperties,
minMaxCacheColumns, false);
}
}
return replaceCurrentNodeWithTrueFilter;
}
/**
* Method to check whether current node needs to be replaced with true filter to avoid pruning
* for case when filter column is not cached in the min/max cached dimension
*
* @param columnResolvedFilterInfo
* @param segmentProperties
* @param minMaxCacheColumns
* @param isMeasure
* @return
*/
private static boolean checkIfFilterColumnIsCachedInDriver(
ColumnResolvedFilterInfo columnResolvedFilterInfo, SegmentProperties segmentProperties,
List<CarbonColumn> minMaxCacheColumns, boolean isMeasure) {
boolean replaceCurrentNodeWithTrueFilter = false;
CarbonColumn columnFromCurrentBlock = null;
if (isMeasure) {
columnFromCurrentBlock = segmentProperties
.getMeasureFromCurrentBlock(columnResolvedFilterInfo.getMeasure().getColumnId());
} else {
columnFromCurrentBlock =
segmentProperties.getDimensionFromCurrentBlock(columnResolvedFilterInfo.getDimension());
}
if (null != columnFromCurrentBlock) {
// check for filter dimension in the cached column list
if (null != minMaxCacheColumns) {
int columnIndexInMinMaxByteArray =
getFilterColumnIndexInCachedColumns(minMaxCacheColumns, columnFromCurrentBlock);
if (columnIndexInMinMaxByteArray != -1) {
columnResolvedFilterInfo.setColumnIndexInMinMaxByteArray(columnIndexInMinMaxByteArray);
} else {
// will be true only if column caching is enabled and current filter column is not cached
replaceCurrentNodeWithTrueFilter = true;
}
} else {
// if columns to be cached are not specified then in that case all columns will be cached
// and then the ordinal of column will be its index in the min/max byte array
if (isMeasure) {
columnResolvedFilterInfo.setColumnIndexInMinMaxByteArray(
segmentProperties.getLastDimensionColOrdinal() + columnFromCurrentBlock.getOrdinal());
} else {
columnResolvedFilterInfo
.setColumnIndexInMinMaxByteArray(columnFromCurrentBlock.getOrdinal());
}
}
}
return replaceCurrentNodeWithTrueFilter;
}
/**
* Method to check whether the filter dimension exists in the cached dimensions for a table
*
* @param carbonDimensionsToBeCached
* @param filterColumn
* @return
*/
private static int getFilterColumnIndexInCachedColumns(
List<CarbonColumn> carbonDimensionsToBeCached, CarbonColumn filterColumn) {
int columnIndexInMinMaxByteArray = -1;
int columnCounter = 0;
for (CarbonColumn cachedColumn : carbonDimensionsToBeCached) {
if (cachedColumn.getColumnId().equalsIgnoreCase(filterColumn.getColumnId())) {
columnIndexInMinMaxByteArray = columnCounter;
break;
}
columnCounter++;
}
return columnIndexInMinMaxByteArray;
}
/**
* It gives filter executer based on columnar or column group
*
* @param dimColResolvedFilterInfo
* @param segmentProperties
* @return
*/
private static FilterExecuter getExcludeFilterExecuter(
DimColumnResolvedFilterInfo dimColResolvedFilterInfo,
MeasureColumnResolvedFilterInfo msrColResolvedFilterInfo,
SegmentProperties segmentProperties) {
if (null != msrColResolvedFilterInfo && msrColResolvedFilterInfo.getMeasure().isMeasure()) {
CarbonMeasure measuresFromCurrentBlock = segmentProperties
.getMeasureFromCurrentBlock(msrColResolvedFilterInfo.getMeasure().getColumnId());
if (null != measuresFromCurrentBlock) {
// update dimension and column index according to the dimension position in current block
MeasureColumnResolvedFilterInfo msrColResolvedFilterInfoCopyObject =
msrColResolvedFilterInfo.getCopyObject();
msrColResolvedFilterInfoCopyObject.setMeasure(measuresFromCurrentBlock);
msrColResolvedFilterInfoCopyObject.setColumnIndex(measuresFromCurrentBlock.getOrdinal());
msrColResolvedFilterInfoCopyObject.setType(measuresFromCurrentBlock.getDataType());
return new ExcludeFilterExecuterImpl(null, msrColResolvedFilterInfoCopyObject,
segmentProperties, true);
} else {
return new RestructureExcludeFilterExecutorImpl(dimColResolvedFilterInfo,
msrColResolvedFilterInfo, true);
}
}
CarbonDimension dimensionFromCurrentBlock =
segmentProperties.getDimensionFromCurrentBlock(dimColResolvedFilterInfo.getDimension());
if (null != dimensionFromCurrentBlock) {
// update dimension and column index according to the dimension position in current block
DimColumnResolvedFilterInfo dimColResolvedFilterInfoCopyObject =
dimColResolvedFilterInfo.getCopyObject();
dimColResolvedFilterInfoCopyObject.setDimension(dimensionFromCurrentBlock);
dimColResolvedFilterInfoCopyObject.setColumnIndex(dimensionFromCurrentBlock.getOrdinal());
return new ExcludeFilterExecuterImpl(dimColResolvedFilterInfoCopyObject, null,
segmentProperties, false);
} else {
return new RestructureExcludeFilterExecutorImpl(dimColResolvedFilterInfo,
msrColResolvedFilterInfo, false);
}
}
/**
* This method will check if a given expression contains a column expression
* recursively.
*
* @return
*/
public static boolean checkIfExpressionContainsColumn(Expression expression) {
if (expression instanceof ColumnExpression) {
return true;
}
for (Expression child : expression.getChildren()) {
if (checkIfExpressionContainsColumn(child)) {
return true;
}
}
return false;
}
/**
* This method will check if a given expression contains a column expression
* recursively.
*
* @return
*/
public static boolean checkIfLeftExpressionRequireEvaluation(Expression expression) {
if (expression.getFilterExpressionType() == ExpressionType.UNKNOWN
|| !(expression instanceof ColumnExpression)) {
return true;
}
for (Expression child : expression.getChildren()) {
if (checkIfLeftExpressionRequireEvaluation(child)) {
return true;
}
}
return false;
}
/**
* This method will check if a given literal expression is not a timestamp datatype
* recursively.
*
* @return
*/
public static boolean checkIfDataTypeNotTimeStamp(Expression expression) {
if (expression.getFilterExpressionType() == ExpressionType.LITERAL
&& expression instanceof LiteralExpression) {
DataType dataType = ((LiteralExpression) expression).getLiteralExpDataType();
if (!(dataType == DataTypes.TIMESTAMP || dataType == DataTypes.DATE)) {
return true;
}
}
for (Expression child : expression.getChildren()) {
if (checkIfDataTypeNotTimeStamp(child)) {
return true;
}
}
return false;
}
/**
* This method will check if a given expression contains a column expression
* recursively.
*
* @return
*/
public static boolean checkIfRightExpressionRequireEvaluation(Expression expression) {
if (expression.getFilterExpressionType() == ExpressionType.UNKNOWN
|| !(expression instanceof LiteralExpression) && !(expression instanceof ListExpression)) {
return true;
}
for (Expression child : expression.getChildren()) {
if (checkIfRightExpressionRequireEvaluation(child)) {
return true;
}
}
return false;
}
/**
* method will get the masked keys based on the keys generated from surrogates.
*
* @param ranges
* @param key
* @return byte[]
*/
private static byte[] getMaskedKey(int[] ranges, byte[] key) {
byte[] maskkey = new byte[ranges.length];
for (int i = 0; i < maskkey.length; i++) {
maskkey[i] = key[ranges[i]];
}
return maskkey;
}
/**
* This method will return the ranges for the masked Bytes based on the key
* Generator.
*
* @param queryDimensionsOrdinal
* @param generator
* @return
*/
private static int[] getRangesForMaskedByte(int queryDimensionsOrdinal, KeyGenerator generator) {
Set<Integer> integers = new TreeSet<Integer>();
int[] range = generator.getKeyByteOffsets(queryDimensionsOrdinal);
for (int j = range[0]; j <= range[1]; j++) {
integers.add(j);
}
int[] byteIndexs = new int[integers.size()];
int j = 0;
for (Iterator<Integer> iterator = integers.iterator(); iterator.hasNext(); ) {
Integer integer = iterator.next();
byteIndexs[j++] = integer;
}
return byteIndexs;
}
/**
* This method will get the no dictionary data based on filters and same
* will be in ColumnFilterInfo
*
* @param evaluateResultListFinal
* @param isIncludeFilter
* @return ColumnFilterInfo
*/
public static ColumnFilterInfo getNoDictionaryValKeyMemberForFilter(
List<String> evaluateResultListFinal, boolean isIncludeFilter, DataType dataType)
throws FilterUnsupportedException {
List<byte[]> filterValuesList = new ArrayList<byte[]>(20);
String result = null;
try {
int length = evaluateResultListFinal.size();
String timeFormat = CarbonProperties.getInstance()
.getProperty(CarbonCommonConstants.CARBON_TIMESTAMP_FORMAT,
CarbonCommonConstants.CARBON_TIMESTAMP_DEFAULT_FORMAT);
for (int i = 0; i < length; i++) {
result = evaluateResultListFinal.get(i);
if (CarbonCommonConstants.MEMBER_DEFAULT_VAL.equals(result)) {
if (dataType == DataTypes.STRING) {
filterValuesList.add(CarbonCommonConstants.MEMBER_DEFAULT_VAL_ARRAY);
} else {
filterValuesList.add(CarbonCommonConstants.EMPTY_BYTE_ARRAY);
}
continue;
}
filterValuesList.add(DataTypeUtil
.getBytesBasedOnDataTypeForNoDictionaryColumn(result, dataType, timeFormat));
}
} catch (Throwable ex) {
throw new FilterUnsupportedException("Unsupported Filter condition: " + result, ex);
}
java.util.Comparator<byte[]> filterNoDictValueComaparator = new java.util.Comparator<byte[]>() {
@Override public int compare(byte[] filterMember1, byte[] filterMember2) {
// TODO Auto-generated method stub
return ByteUtil.UnsafeComparer.INSTANCE.compareTo(filterMember1, filterMember2);
}
};
Collections.sort(filterValuesList, filterNoDictValueComaparator);
ColumnFilterInfo columnFilterInfo = null;
if (filterValuesList.size() > 0) {
columnFilterInfo = new ColumnFilterInfo();
columnFilterInfo.setIncludeFilter(isIncludeFilter);
columnFilterInfo.setFilterListForNoDictionaryCols(filterValuesList);
}
return columnFilterInfo;
}
/**
* This method will get the no dictionary data based on filters and same
* will be in ColumnFilterInfo
*
* @param evaluateResultListFinal
* @param isIncludeFilter
* @return ColumnFilterInfo
*/
public static ColumnFilterInfo getMeasureValKeyMemberForFilter(
List<String> evaluateResultListFinal, boolean isIncludeFilter, DataType dataType,
CarbonMeasure carbonMeasure) throws FilterUnsupportedException {
List<Object> filterValuesList = new ArrayList<>(20);
String result = null;
try {
int length = evaluateResultListFinal.size();
for (int i = 0; i < length; i++) {
result = evaluateResultListFinal.get(i);
if (CarbonCommonConstants.MEMBER_DEFAULT_VAL.equals(result)) {
filterValuesList.add(null);
continue;
}
filterValuesList.add(DataTypeUtil
.getMeasureValueBasedOnDataType(result, dataType, carbonMeasure.getScale(),
carbonMeasure.getPrecision()));
}
} catch (Throwable ex) {
throw new FilterUnsupportedException("Unsupported Filter condition: " + result, ex);
}
SerializableComparator filterMeasureComaparator =
Comparator.getComparatorByDataTypeForMeasure(dataType);
Collections.sort(filterValuesList, filterMeasureComaparator);
ColumnFilterInfo columnFilterInfo = null;
if (filterValuesList.size() > 0) {
columnFilterInfo = new ColumnFilterInfo();
columnFilterInfo.setIncludeFilter(isIncludeFilter);
columnFilterInfo.setMeasuresFilterValuesList(filterValuesList);
}
return columnFilterInfo;
}
public static DataType getMeasureDataType(
MeasureColumnResolvedFilterInfo msrColumnEvaluatorInfo) {
if (msrColumnEvaluatorInfo.getType() == DataTypes.BOOLEAN) {
return DataTypes.BOOLEAN;
} else if (msrColumnEvaluatorInfo.getType() == DataTypes.SHORT) {
return DataTypes.SHORT;
} else if (msrColumnEvaluatorInfo.getType() == DataTypes.INT) {
return DataTypes.INT;
} else if (msrColumnEvaluatorInfo.getType() == DataTypes.LONG) {
return DataTypes.LONG;
} else if (msrColumnEvaluatorInfo.getType() == DataTypes.FLOAT) {
return DataTypes.FLOAT;
} else if (msrColumnEvaluatorInfo.getType() == DataTypes.BYTE) {
return DataTypes.BYTE;
} else if (DataTypes.isDecimal(msrColumnEvaluatorInfo.getType())) {
return DataTypes.createDefaultDecimalType();
} else {
return DataTypes.DOUBLE;
}
}
/**
* Method will prepare the dimfilterinfo instance by resolving the filter
* expression value to its respective surrogates.
*
* @param tableIdentifier
* @param columnExpression
* @param evaluateResultList
* @param isIncludeFilter
* @return
* @throws QueryExecutionException
*/
public static ColumnFilterInfo getFilterValues(AbsoluteTableIdentifier tableIdentifier,
ColumnExpression columnExpression, List<String> evaluateResultList, boolean isIncludeFilter)
throws QueryExecutionException, FilterUnsupportedException, IOException {
Dictionary forwardDictionary = null;
ColumnFilterInfo filterInfo = null;
List<Integer> surrogates =
new ArrayList<Integer>(CarbonCommonConstants.DEFAULT_COLLECTION_SIZE);
try {
// Reading the dictionary value from cache.
forwardDictionary =
getForwardDictionaryCache(tableIdentifier, columnExpression.getDimension());
sortFilterModelMembers(columnExpression, evaluateResultList);
getDictionaryValue(evaluateResultList, forwardDictionary, surrogates);
filterInfo =
getFilterValues(forwardDictionary, isIncludeFilter, surrogates);
if (filterInfo.isOptimized()) {
return getDimColumnFilterInfoAfterApplyingCBO(forwardDictionary, filterInfo);
}
} finally {
CarbonUtil.clearDictionaryCache(forwardDictionary);
}
return filterInfo;
}
/**
* Method will prepare the dimfilterinfo instance by resolving the filter
* expression value to its respective surrogates.
*
* @param forwardDictionary
* @param isIncludeFilter
* @param surrogates
* @return
*/
private static ColumnFilterInfo getFilterValues(Dictionary forwardDictionary,
boolean isIncludeFilter, List<Integer> surrogates) {
// Default value has to be added
if (surrogates.isEmpty()) {
surrogates.add(0);
}
boolean isExcludeFilterNeedsToApply = false;
if (isIncludeFilter) {
isExcludeFilterNeedsToApply =
isExcludeFilterNeedsToApply(forwardDictionary.getDictionaryChunks().getSize(),
surrogates.size());
}
Collections.sort(surrogates);
ColumnFilterInfo columnFilterInfo = null;
columnFilterInfo = new ColumnFilterInfo();
if (isExcludeFilterNeedsToApply) {
columnFilterInfo.setOptimized(true);
}
columnFilterInfo.setIncludeFilter(isIncludeFilter);
if (!isIncludeFilter) {
columnFilterInfo.setExcludeFilterList(surrogates);
} else {
columnFilterInfo.setFilterList(surrogates);
}
return columnFilterInfo;
}
public static boolean isExcludeFilterNeedsToApply(int dictionarySize,
int size) {
if ((size * 100) / dictionarySize >= 60) {
LOGGER.info("Applying CBO to convert include filter to exclude filter.");
return true;
}
return false;
}
private static ColumnFilterInfo getDimColumnFilterInfoAfterApplyingCBO(
Dictionary forwardDictionary, ColumnFilterInfo filterInfo) throws FilterUnsupportedException {
List<Integer> excludeMemberSurrogates =
prepareExcludeFilterMembers(forwardDictionary, filterInfo.getFilterList());
filterInfo.setExcludeFilterList(excludeMemberSurrogates);
return filterInfo;
}
private static void prepareIncludeFilterMembers(Expression expression,
final ColumnExpression columnExpression, boolean isIncludeFilter,
Dictionary forwardDictionary, List<Integer> surrogates)
throws FilterUnsupportedException {
DictionaryChunksWrapper dictionaryWrapper;
dictionaryWrapper = forwardDictionary.getDictionaryChunks();
int surrogateCount = 0;
while (dictionaryWrapper.hasNext()) {
byte[] columnVal = dictionaryWrapper.next();
++surrogateCount;
try {
RowIntf row = new RowImpl();
String stringValue =
new String(columnVal, Charset.forName(CarbonCommonConstants.DEFAULT_CHARSET));
if (stringValue.equals(CarbonCommonConstants.MEMBER_DEFAULT_VAL)) {
stringValue = null;
}
row.setValues(new Object[] { DataTypeUtil.getDataBasedOnDataType(stringValue,
columnExpression.getCarbonColumn().getDataType()) });
Boolean rslt = expression.evaluate(row).getBoolean();
if (null != rslt) {
if (rslt) {
if (null == stringValue) {
// this is for query like select name from table unknowexpr(name,1)
// != 'value' -> for null dictionary value
surrogates.add(CarbonCommonConstants.DICT_VALUE_NULL);
} else if (isIncludeFilter) {
// this is for query like select ** from * where unknwonexpr(*) == 'value'
surrogates.add(surrogateCount);
}
} else if (null != stringValue && !isIncludeFilter) {
// this is for isNot null or not in query( e.x select ** from t where name is not null
surrogates.add(surrogateCount);
}
}
} catch (FilterIllegalMemberException e) {
LOGGER.debug(e.getMessage());
}
}
}
private static List<Integer> prepareExcludeFilterMembers(
Dictionary forwardDictionary,List<Integer> includeSurrogates)
throws FilterUnsupportedException {
DictionaryChunksWrapper dictionaryWrapper;
RoaringBitmap bitMapOfSurrogates = RoaringBitmap.bitmapOf(
ArrayUtils.toPrimitive(includeSurrogates.toArray(new Integer[includeSurrogates.size()])));
dictionaryWrapper = forwardDictionary.getDictionaryChunks();
List<Integer> excludeFilterList = new ArrayList<Integer>(includeSurrogates.size());
int surrogateCount = 0;
while (dictionaryWrapper.hasNext()) {
dictionaryWrapper.next();
++surrogateCount;
if (!bitMapOfSurrogates.contains(surrogateCount)) {
excludeFilterList.add(surrogateCount);
}
}
return excludeFilterList;
}
/**
* This API will get the Dictionary value for the respective filter member
* string.
*
* @param evaluateResultList filter value
* @param surrogates
*/
private static void getDictionaryValue(List<String> evaluateResultList,
Dictionary forwardDictionary, List<Integer> surrogates) {
((ForwardDictionary) forwardDictionary)
.getSurrogateKeyByIncrementalSearch(evaluateResultList, surrogates);
}
/**
* This method will get all the members of column from the forward dictionary
* cache, this method will be basically used in row level filter resolver.
*
* @param tableIdentifier
* @param expression
* @param columnExpression
* @param isIncludeFilter
* @return ColumnFilterInfo
* @throws FilterUnsupportedException
* @throws IOException
*/
public static ColumnFilterInfo getFilterListForAllValues(AbsoluteTableIdentifier tableIdentifier,
Expression expression, final ColumnExpression columnExpression, boolean isIncludeFilter,
boolean isExprEvalReqd) throws FilterUnsupportedException, IOException {
Dictionary forwardDictionary = null;
List<Integer> surrogates = new ArrayList<Integer>(20);
try {
forwardDictionary =
getForwardDictionaryCache(tableIdentifier, columnExpression.getDimension());
if (isExprEvalReqd && !isIncludeFilter) {
surrogates.add(CarbonCommonConstants.DICT_VALUE_NULL);
}
prepareIncludeFilterMembers(expression, columnExpression, isIncludeFilter, forwardDictionary,
surrogates);
ColumnFilterInfo filterInfo =
getFilterValues(forwardDictionary, isIncludeFilter, surrogates);
if (filterInfo.isOptimized()) {
return getDimColumnFilterInfoAfterApplyingCBO(forwardDictionary,
filterInfo);
}
return filterInfo;
} finally {
CarbonUtil.clearDictionaryCache(forwardDictionary);
}
}
private static void sortFilterModelMembers(final ColumnExpression columnExpression,
List<String> evaluateResultListFinal) {
java.util.Comparator<String> filterActualValueComaparator = new java.util.Comparator<String>() {
@Override public int compare(String filterMember1, String filterMember2) {
return compareFilterMembersBasedOnActualDataType(filterMember1, filterMember2,
columnExpression.getDataType());
}
};
Collections.sort(evaluateResultListFinal, filterActualValueComaparator);
}
/**
* Method will prepare the dimfilterinfo instance by resolving the filter
* expression value to its respective surrogates in the scenario of restructure.
*
* @param expression
* @param defaultValues
* @param defaultSurrogate
* @return
* @throws FilterUnsupportedException
*/
public static ColumnFilterInfo getFilterListForRS(Expression expression, String defaultValues,
int defaultSurrogate) throws FilterUnsupportedException {
List<Integer> filterValuesList = new ArrayList<Integer>(20);
ColumnFilterInfo columnFilterInfo = null;
List<String> evaluateResultListFinal = new ArrayList<String>(20);
try {
List<ExpressionResult> evaluateResultList = expression.evaluate(null).getList();
for (ExpressionResult result : evaluateResultList) {
if (result.getString() == null) {
evaluateResultListFinal.add(CarbonCommonConstants.MEMBER_DEFAULT_VAL);
continue;
}
evaluateResultListFinal.add(result.getString());
}
for (int i = 0; i < evaluateResultListFinal.size(); i++) {
if (evaluateResultListFinal.get(i).equals(defaultValues)) {
filterValuesList.add(defaultSurrogate);
break;
}
}
if (filterValuesList.size() > 0) {
columnFilterInfo = new ColumnFilterInfo();
columnFilterInfo.setFilterList(filterValuesList);
}
} catch (FilterIllegalMemberException e) {
LOGGER.error(e.getMessage(), e);
}
return columnFilterInfo;
}
/**
* This method will get the member based on filter expression evaluation from the
* forward dictionary cache, this method will be basically used in restructure.
*
* @param expression
* @param columnExpression
* @param defaultValues
* @param defaultSurrogate
* @param isIncludeFilter
* @return
* @throws FilterUnsupportedException
*/
public static ColumnFilterInfo getFilterListForAllMembersRS(Expression expression,
ColumnExpression columnExpression, String defaultValues, int defaultSurrogate,
boolean isIncludeFilter) throws FilterUnsupportedException {
List<Integer> filterValuesList = new ArrayList<Integer>(20);
List<String> evaluateResultListFinal = new ArrayList<String>(20);
ColumnFilterInfo columnFilterInfo = null;
try {
RowIntf row = new RowImpl();
if (defaultValues.equals(CarbonCommonConstants.MEMBER_DEFAULT_VAL)) {
defaultValues = null;
}
row.setValues(new Object[] { DataTypeUtil.getDataBasedOnDataType(defaultValues,
columnExpression.getCarbonColumn().getDataType()) });
Boolean rslt = expression.evaluate(row).getBoolean();
if (null != rslt && rslt == isIncludeFilter) {
if (null == defaultValues) {
evaluateResultListFinal.add(CarbonCommonConstants.MEMBER_DEFAULT_VAL);
} else {
evaluateResultListFinal.add(defaultValues);
}
}
} catch (FilterIllegalMemberException e) {
LOGGER.error(e.getMessage(), e);
}
if (null == defaultValues) {
defaultValues = CarbonCommonConstants.MEMBER_DEFAULT_VAL;
}
columnFilterInfo = new ColumnFilterInfo();
for (int i = 0; i < evaluateResultListFinal.size(); i++) {
if (evaluateResultListFinal.get(i).equals(defaultValues)) {
filterValuesList.add(defaultSurrogate);
break;
}
}
columnFilterInfo.setFilterList(filterValuesList);
return columnFilterInfo;
}
private static byte[][] getFilterValuesInBytes(ColumnFilterInfo columnFilterInfo,