Github user gvramana commented on a diff in the pull request:
https://github.com/apache/incubator-carbondata/pull/641#discussion_r105852481
--- Diff:
core/src/main/java/org/apache/carbondata/core/scan/collector/ResultCollectorFactory.java
---
@@ -0,0 +1,77 @@
+/*
+ * 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;
+
+import org.apache.carbondata.common.logging.LogService;
+import org.apache.carbondata.common.logging.LogServiceFactory;
+import
org.apache.carbondata.core.scan.collector.impl.AbstractScannedResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.DictionaryBasedResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.DictionaryBasedVectorResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.RawBasedResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.RestructureBasedDictionaryResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.RestructureBasedRawResultCollector;
+import
org.apache.carbondata.core.scan.collector.impl.RestructureBasedVectorResultCollector;
+import org.apache.carbondata.core.scan.executor.infos.BlockExecutionInfo;
+
+/**
+ * This class will provide the result collector instance based on the
required type
+ */
+public class ResultCollectorFactory {
+
+ /**
+ * logger of result collector factory
+ */
+ private static final LogService LOGGER =
+
LogServiceFactory.getLogService(ResultCollectorFactory.class.getName());
+
+ /**
+ * This method will create result collector based on the given type
+ *
+ * @param blockExecutionInfo
+ * @return
+ */
+ public static AbstractScannedResultCollector getScannedResultCollector(
+ BlockExecutionInfo blockExecutionInfo) {
+ AbstractScannedResultCollector scannerResultAggregator = null;
+ if (blockExecutionInfo.isRawRecordDetailQuery()) {
+ if (blockExecutionInfo.isRestructuredBlock()) {
+ LOGGER.info("Restructure based raw collector is used to scan and
collect the data");
+ scannerResultAggregator = new
RestructureBasedRawResultCollector(blockExecutionInfo);
+ } else {
+ LOGGER.info("Row based raw collector is used to scan and collect
the data");
+ scannerResultAggregator = new
RawBasedResultCollector(blockExecutionInfo);
+ }
+ } else if (blockExecutionInfo.isVectorBatchCollector()) {
+ if (blockExecutionInfo.isRestructuredBlock()) {
+ LOGGER.info("Restructure dictionary vector collector is used to
scan and collect the data");
+ scannerResultAggregator = new
RestructureBasedVectorResultCollector(blockExecutionInfo);
--- End diff --
RestructureBasedVectorResultCollector should be derived from
DictionaryBasedVectorResultCollector and
RestructureBasedDictionaryResultCollector should be derived from
DictionaryBasedResultCollector
RestructureBasedRawResultCollector should be derived from
RawBasedResultCollector
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