Github user gvramana commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/670#discussion_r106799714
--- Diff:
core/src/main/java/org/apache/carbondata/core/scan/filter/executer/RangeValueFilterExecuterImpl.java
---
@@ -0,0 +1,557 @@
+/*
+ * 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.executer;
+
+import java.io.IOException;
+import java.util.BitSet;
+
+import org.apache.carbondata.core.constants.CarbonCommonConstants;
+import org.apache.carbondata.core.datastore.block.SegmentProperties;
+import org.apache.carbondata.core.datastore.chunk.DimensionColumnDataChunk;
+import
org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
+import
org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk;
+import
org.apache.carbondata.core.datastore.chunk.impl.VariableLengthDimensionDataChunk;
+import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
+import
org.apache.carbondata.core.metadata.schema.table.column.CarbonDimension;
+import org.apache.carbondata.core.scan.expression.Expression;
+import
org.apache.carbondata.core.scan.expression.conditional.GreaterThanEqualToExpression;
+import
org.apache.carbondata.core.scan.expression.conditional.GreaterThanExpression;
+import
org.apache.carbondata.core.scan.expression.conditional.LessThanEqualToExpression;
+import
org.apache.carbondata.core.scan.expression.conditional.LessThanExpression;
+import
org.apache.carbondata.core.scan.expression.exception.FilterUnsupportedException;
+import org.apache.carbondata.core.scan.filter.FilterUtil;
+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.processor.BlocksChunkHolder;
+import org.apache.carbondata.core.util.BitSetGroup;
+import org.apache.carbondata.core.util.ByteUtil;
+import org.apache.carbondata.core.util.CarbonUtil;
+
+public class RangeValueFilterExecuterImpl extends
ValueBasedFilterExecuterImpl {
+
+ private DimColumnResolvedFilterInfo dimColEvaluatorInfo;
+ private MeasureColumnResolvedFilterInfo msrColEvalutorInfo;
+ private AbsoluteTableIdentifier tableIdentifier;
+ private Expression exp;
+ private byte[][] filterRangesValues;
+ private SegmentProperties segmentProperties;
+ private boolean isDefaultValuePresentInFilter;
+ /**
+ * it has index at which given dimension is stored in file
+ */
+ protected int dimensionBlocksIndex;
+
+ /**
+ * flag to check whether the filter dimension is present in current
block list of dimensions.
+ * Applicable for restructure scenarios
+ */
+ protected boolean isDimensionPresentInCurrentBlock;
+
+ public RangeValueFilterExecuterImpl(DimColumnResolvedFilterInfo
dimColEvaluatorInfo,
+ MeasureColumnResolvedFilterInfo msrColEvaluatorInfo, Expression exp,
+ AbsoluteTableIdentifier tableIdentifier, byte[][] filterRangeValues,
+ SegmentProperties segmentProperties) {
+
+ this.dimColEvaluatorInfo = dimColEvaluatorInfo;
+ this.msrColEvalutorInfo = msrColEvaluatorInfo;
+ this.exp = exp;
+ this.segmentProperties = segmentProperties;
+ this.tableIdentifier = tableIdentifier;
+ this.filterRangesValues = filterRangeValues;
+ initDimensionBlockIndexes();
+ ifDefaultValueMatchesFilter();
+ }
+
+ /**
+ * This method will initialize the dimension info for the current block
to be
+ * used for filtering the data
+ */
+ private void initDimensionBlockIndexes() {
+ // find the dimension in the current block dimensions list
+ CarbonDimension dimensionFromCurrentBlock =
+
segmentProperties.getDimensionFromCurrentBlock(dimColEvaluatorInfo.getDimension());
+ if (null != dimensionFromCurrentBlock) {
+
dimColEvaluatorInfo.setColumnIndex(dimensionFromCurrentBlock.getOrdinal());
+ this.dimensionBlocksIndex =
segmentProperties.getDimensionOrdinalToBlockMapping()
+ .get(dimensionFromCurrentBlock.getOrdinal());
+ isDimensionPresentInCurrentBlock = true;
+ }
+ }
+
+ /**
+ * This method will check whether default value is present in the given
filter values
+ */
+ private void ifDefaultValueMatchesFilter() {
+ isDefaultValuePresentInFilter = false;
+ if (this.isDimensionPresentInCurrentBlock) {
+ CarbonDimension dimension = this.dimColEvaluatorInfo.getDimension();
+ byte[] defaultValue = dimension.getDefaultValue();
+ if (null != defaultValue) {
+ int maxCompare =
+ ByteUtil.UnsafeComparer.INSTANCE.compareTo(defaultValue,
filterRangesValues[0]);
+ int minCompare =
+
ByteUtil.UnsafeComparer.INSTANCE.compareTo(filterRangesValues[1], defaultValue);
+
+ if (((isGreaterThan() && maxCompare > 0) ||
(isGreaterThanEqualTo() && maxCompare >= 0))
+ && ((isLessThan() && minCompare > 0) || (isLessThanEqualTo()
&& minCompare >= 0))) {
+ isDefaultValuePresentInFilter = true;
+ }
+ }
+ }
+ }
+
+ /**
+ * Method to apply the filter.
+ * @param blockChunkHolder
+ * @return
+ * @throws FilterUnsupportedException
+ * @throws IOException
+ */
+ public BitSetGroup applyFilter(BlocksChunkHolder blockChunkHolder)
+ throws FilterUnsupportedException, IOException {
+ return applyNoAndDirectFilter(blockChunkHolder);
+ }
+
+ /**
+ * Method to find presence of LessThan Expression.
+ * @return
+ */
+ private boolean isLessThan() {
+ for (Expression result : this.exp.getChildren()) {
+ if (result instanceof LessThanExpression) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Method to find presence of LessThanEqualTo Expression.
+ * @return
+ */
+ private boolean isLessThanEqualTo() {
+ for (Expression result : this.exp.getChildren()) {
+ if (result instanceof LessThanEqualToExpression) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Method to find presence of GreaterThan Expression.
+ * @return
+ */
+ private boolean isGreaterThan() {
+ for (Expression result : this.exp.getChildren()) {
+ if (result instanceof GreaterThanExpression) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Method to find presence of GreaterThanEqual Expression.
+ * @return
+ */
+ private boolean isGreaterThanEqualTo() {
+ for (Expression result : this.exp.getChildren()) {
+ if (result instanceof GreaterThanEqualToExpression) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Method to identify if scanning of Data Block required or not by
comparing the Block Min and Max
+ * values and comparing them with filter min and max value.
+ * @param blockMinValue
+ * @param blockMaxValue
+ * @param filterValues
+ * @return
+ */
+ public boolean isScanRequired(byte[] blockMinValue, byte[]
blockMaxValue, byte[][] filterValues) {
+ boolean isScanRequired = true;
+
+ boolean lessThan = isLessThan();
+ boolean greaterThan = isGreaterThan();
+ boolean greaterThanEqualTo = isGreaterThanEqualTo();
+ boolean lessThanEqualTo = isLessThanEqualTo();
+
+ int filterMinlessThanBlockMin =
--- End diff --
remove this not used
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