Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2003#discussion_r170866077
--- Diff:
datamap/lucene/src/main/java/org/apache/carbondata/datamap/lucene/LuceneCoarseGrainDataMap.java
---
@@ -0,0 +1,233 @@
+/*
+ * 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.datamap.lucene;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.apache.carbondata.common.annotations.InterfaceAudience;
+import org.apache.carbondata.common.logging.LogService;
+import org.apache.carbondata.common.logging.LogServiceFactory;
+import org.apache.carbondata.core.datamap.dev.DataMapModel;
+import org.apache.carbondata.core.datamap.dev.cgdatamap.CoarseGrainDataMap;
+import org.apache.carbondata.core.datastore.block.SegmentProperties;
+import org.apache.carbondata.core.datastore.impl.FileFactory;
+import org.apache.carbondata.core.indexstore.Blocklet;
+import org.apache.carbondata.core.memory.MemoryException;
+import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier;
+import org.apache.carbondata.core.scan.filter.resolver.FilterResolverIntf;
+
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.standard.StandardAnalyzer;
+import org.apache.lucene.document.Document;
+import org.apache.lucene.index.DirectoryReader;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.IndexableField;
+import org.apache.lucene.queryparser.classic.MultiFieldQueryParser;
+import org.apache.lucene.queryparser.classic.ParseException;
+import org.apache.lucene.queryparser.classic.QueryParser;
+import org.apache.lucene.search.IndexSearcher;
+import org.apache.lucene.search.Query;
+import org.apache.lucene.search.ScoreDoc;
+import org.apache.lucene.search.TopDocs;
+import org.apache.lucene.store.Directory;
+import org.apache.solr.store.hdfs.HdfsDirectory;
+
[email protected]
+public class LuceneCoarseGrainDataMap extends CoarseGrainDataMap {
+
+ /**
+ * log information
+ */
+ private static final LogService LOGGER =
+
LogServiceFactory.getLogService(LuceneCoarseGrainDataMap.class.getName());
+
+ public static final int BLOCKID_ID = 0;
+
+ public static final int BLOCKLETID_ID = 1;
+
+ public static final int PAGEID_ID = 2;
+
+ public static final int ROWID_ID = 3;
+ /**
+ * searcher object for this datamap
+ */
+ private IndexSearcher indexSearcher = null;
+
+ /**
+ * default max values to return
+ */
+ private static int MAX_RESULT_NUMBER = 100;
--- End diff --
I will leave it to future PR
---
