Github user gvramana commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/641#discussion_r105879703
--- Diff:
core/src/main/java/org/apache/carbondata/core/scan/collector/impl/RestructureBasedVectorResultCollector.java
---
@@ -0,0 +1,321 @@
+/*
+ * 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.collector.impl;
+
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import
org.apache.carbondata.core.keygenerator.directdictionary.DirectDictionaryKeyGeneratorFactory;
+import org.apache.carbondata.core.metadata.encoder.Encoding;
+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.infos.BlockExecutionInfo;
+import org.apache.carbondata.core.scan.model.QueryDimension;
+import org.apache.carbondata.core.scan.model.QueryMeasure;
+import org.apache.carbondata.core.scan.result.AbstractScannedResult;
+import org.apache.carbondata.core.scan.result.vector.CarbonColumnVector;
+import org.apache.carbondata.core.scan.result.vector.CarbonColumnarBatch;
+import org.apache.carbondata.core.scan.result.vector.ColumnVectorInfo;
+import
org.apache.carbondata.core.scan.result.vector.MeasureDataVectorProcessor;
+
+import org.apache.spark.sql.types.Decimal;
+
+/**
+ * It is not a collector it is just a scanned result holder.
+ */
+public class RestructureBasedVectorResultCollector extends
AbstractScannedResultCollector {
+
+ private ColumnVectorInfo[] dictionaryInfo;
+
+ private ColumnVectorInfo[] noDictionaryInfo;
+
+ private ColumnVectorInfo[] complexInfo;
+
+ private ColumnVectorInfo[] measureColumnInfo;
+
+ private ColumnVectorInfo[] allColumnInfo;
+
+ public RestructureBasedVectorResultCollector(BlockExecutionInfo
blockExecutionInfos) {
+ super(blockExecutionInfos);
+ QueryDimension[] queryDimensions =
tableBlockExecutionInfos.getActualQueryDimensions();
+ QueryMeasure[] queryMeasures =
tableBlockExecutionInfos.getActualQueryMeasures();
+ measureColumnInfo = new ColumnVectorInfo[queryMeasures.length];
+ allColumnInfo = new ColumnVectorInfo[queryDimensions.length +
queryMeasures.length];
+ List<ColumnVectorInfo> dictInfoList = new ArrayList<>();
+ List<ColumnVectorInfo> noDictInfoList = new ArrayList<>();
+ List<ColumnVectorInfo> complexList = new ArrayList<>();
+ int dimensionExistIndex = 0;
+ for (int i = 0; i < queryDimensions.length; i++) {
+ if (!dimensionInfo.getDimensionExists()[i]) {
+ // add a dummy column vector result collector object
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ allColumnInfo[queryDimensions[i].getQueryOrder()] =
columnVectorInfo;
+ continue;
+ }
+ // get the current block dimension and fetch the required
information from it
+ QueryDimension currentBlockDimension =
+
tableBlockExecutionInfos.getQueryDimensions()[dimensionExistIndex++];
+ if
(!queryDimensions[i].getDimension().hasEncoding(Encoding.DICTIONARY)) {
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ noDictInfoList.add(columnVectorInfo);
+ columnVectorInfo.dimension = currentBlockDimension;
+ columnVectorInfo.ordinal =
currentBlockDimension.getDimension().getOrdinal();
+ allColumnInfo[queryDimensions[i].getQueryOrder()] =
columnVectorInfo;
+ } else if
(queryDimensions[i].getDimension().hasEncoding(Encoding.DIRECT_DICTIONARY)) {
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ dictInfoList.add(columnVectorInfo);
+ columnVectorInfo.dimension = currentBlockDimension;
+ columnVectorInfo.directDictionaryGenerator =
DirectDictionaryKeyGeneratorFactory
+
.getDirectDictionaryGenerator(currentBlockDimension.getDimension().getDataType());
+ columnVectorInfo.ordinal =
currentBlockDimension.getDimension().getOrdinal();
+ allColumnInfo[queryDimensions[i].getQueryOrder()] =
columnVectorInfo;
+ } else if (queryDimensions[i].getDimension().isComplex()) {
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ complexList.add(columnVectorInfo);
+ columnVectorInfo.dimension = currentBlockDimension;
+ columnVectorInfo.ordinal =
currentBlockDimension.getDimension().getOrdinal();
+ columnVectorInfo.genericQueryType =
+
tableBlockExecutionInfos.getComlexDimensionInfoMap().get(columnVectorInfo.ordinal);
+ allColumnInfo[queryDimensions[i].getQueryOrder()] =
columnVectorInfo;
+ } else {
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ dictInfoList.add(columnVectorInfo);
+ columnVectorInfo.dimension = currentBlockDimension;
+ columnVectorInfo.ordinal =
currentBlockDimension.getDimension().getOrdinal();
+ allColumnInfo[queryDimensions[i].getQueryOrder()] =
columnVectorInfo;
+ }
+ }
+ int measureExistIndex = 0;
+ for (int i = 0; i < queryMeasures.length; i++) {
+ if (!measureInfo.getMeasureExists()[i]) {
+ // add a dummy column vector result collector object
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ allColumnInfo[queryMeasures[i].getQueryOrder()] = columnVectorInfo;
+ continue;
+ }
+ QueryMeasure currentBlockMeasure =
+ tableBlockExecutionInfos.getQueryMeasures()[measureExistIndex++];
+ ColumnVectorInfo columnVectorInfo = new ColumnVectorInfo();
+ columnVectorInfo.measureVectorFiller =
MeasureDataVectorProcessor.MeasureVectorFillerFactory
+
.getMeasureVectorFiller(currentBlockMeasure.getMeasure().getDataType());
+ columnVectorInfo.ordinal =
currentBlockMeasure.getMeasure().getOrdinal();
+ columnVectorInfo.measure = currentBlockMeasure;
+ this.measureColumnInfo[i] = columnVectorInfo;
+ allColumnInfo[queryMeasures[i].getQueryOrder()] = columnVectorInfo;
+ }
+ dictionaryInfo = dictInfoList.toArray(new
ColumnVectorInfo[dictInfoList.size()]);
+ noDictionaryInfo = noDictInfoList.toArray(new
ColumnVectorInfo[noDictInfoList.size()]);
+ complexInfo = complexList.toArray(new
ColumnVectorInfo[complexList.size()]);
+ Arrays.sort(dictionaryInfo);
+ Arrays.sort(noDictionaryInfo);
+ Arrays.sort(complexInfo);
+ }
+
+ @Override public List<Object[]> collectData(AbstractScannedResult
scannedResult, int batchSize) {
+ throw new UnsupportedOperationException("collectData is not supported
here");
+ }
+
+ @Override public void collectVectorBatch(AbstractScannedResult
scannedResult,
+ CarbonColumnarBatch columnarBatch) {
+ int numberOfPages = scannedResult.numberOfpages();
+ while (scannedResult.getCurrentPageCounter() < numberOfPages) {
+ int currentPageRowCount = scannedResult.getCurrentPageRowCount();
+ if (currentPageRowCount == 0) {
+ scannedResult.incrementPageCounter();
+ continue;
+ }
+ int rowCounter = scannedResult.getRowCounter();
+ int availableRows = currentPageRowCount - rowCounter;
+ int requiredRows = columnarBatch.getBatchSize() -
columnarBatch.getActualSize();
+ requiredRows = Math.min(requiredRows, availableRows);
+ if (requiredRows < 1) {
+ return;
+ }
+ for (int i = 0; i < allColumnInfo.length; i++) {
+ allColumnInfo[i].size = requiredRows;
+ allColumnInfo[i].offset = rowCounter;
+ allColumnInfo[i].vectorOffset = columnarBatch.getRowCounter();
+ allColumnInfo[i].vector = columnarBatch.columnVectors[i];
+ }
+
+ scannedResult.fillColumnarDictionaryBatch(dictionaryInfo);
+ scannedResult.fillColumnarNoDictionaryBatch(noDictionaryInfo);
+ scannedResult.fillColumnarMeasureBatch(measureColumnInfo,
measureInfo.getMeasureOrdinals());
+ scannedResult.fillColumnarComplexBatch(complexInfo);
+ // fill default values for non existing dimensions and measures
+ fillDataForNonExistingDimensions();
+ fillDataForNonExistingMeasures();
+ // it means fetched all data out of page so increment the page
counter
+ if (availableRows == requiredRows) {
+ scannedResult.incrementPageCounter();
+ } else {
+ // Or set the row counter.
+ scannedResult.setRowCounter(rowCounter + requiredRows);
+ }
+ columnarBatch.setActualSize(columnarBatch.getActualSize() +
requiredRows);
+ columnarBatch.setRowCounter(columnarBatch.getRowCounter() +
requiredRows);
+ }
+ }
+
+ /**
+ * This method will fill the default values of non existing dimensions
in the current block
+ */
+ private void fillDataForNonExistingDimensions() {
+ for (int i = 0; i <
tableBlockExecutionInfos.getActualQueryDimensions().length; i++) {
+ if (!dimensionInfo.getDimensionExists()[i]) {
+ CarbonDimension dimension =
+
tableBlockExecutionInfos.getActualQueryDimensions()[i].getDimension();
+ if (dimension.hasEncoding(Encoding.DIRECT_DICTIONARY)) {
+ // fill direct dictionary column data
+ fillDirectDictionaryData(allColumnInfo[i].vector,
allColumnInfo[i],
+ dimensionInfo.getDefaultValues()[i]);
+ } else if (dimension.hasEncoding(Encoding.DICTIONARY)) {
+ // fill dictionary column data
+ fillDictionaryData(allColumnInfo[i].vector, allColumnInfo[i],
+ dimensionInfo.getDefaultValues()[i]);
+ } else {
+ // fill no dictionary data
+ fillNoDictionaryData(allColumnInfo[i].vector, allColumnInfo[i],
+ dimension.getDefaultValue());
+ }
+ }
+ }
+ }
+
+ /**
+ * This method will fill the dictionary column data
+ *
+ * @param vector
+ * @param columnVectorInfo
+ *
+ * @param defaultValue
+ */
+ private void fillDictionaryData(CarbonColumnVector vector,
ColumnVectorInfo columnVectorInfo,
+ Object defaultValue) {
+ int offset = columnVectorInfo.offset;
+ int vectorOffset = columnVectorInfo.vectorOffset;
+ int len = columnVectorInfo.size + offset;
+ for (int j = offset; j < len; j++) {
+ vector.putInt(vectorOffset++, (int) defaultValue);
+ }
+ }
+
+ /**
+ * This method will fill the direct dictionary column data
+ *
+ * @param vector
+ * @param columnVectorInfo
+ * @param defaultValue
+ */
+ private void fillDirectDictionaryData(CarbonColumnVector vector,
+ ColumnVectorInfo columnVectorInfo, Object defaultValue) {
+ int offset = columnVectorInfo.offset;
+ int vectorOffset = columnVectorInfo.vectorOffset;
+ int len = columnVectorInfo.size + offset;
+ for (int j = offset; j < len; j++) {
--- End diff --
Directly use default value fill method of ColumnVector to put at once.
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