[GitHub] [incubator-doris] qidaye commented on a change in pull request #6569: [Feature] Support query hive table

[GitBox <gi...@apache.org>]

qidaye commented on a change in pull request #6569:
URL: https://github.com/apache/incubator-doris/pull/6569#discussion_r745402643



##########
File path: fe/fe-core/src/main/java/org/apache/doris/planner/HiveScanNode.java
##########
@@ -0,0 +1,186 @@
+// 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.doris.planner;
+
+import org.apache.doris.analysis.Analyzer;
+import org.apache.doris.analysis.Expr;
+import org.apache.doris.analysis.ImportColumnDesc;
+import org.apache.doris.analysis.TupleDescriptor;
+import org.apache.doris.catalog.HiveMetaStoreClientHelper;
+import org.apache.doris.catalog.HiveTable;
+import org.apache.doris.common.DdlException;
+import org.apache.doris.common.UserException;
+import org.apache.doris.thrift.TBrokerFileStatus;
+import org.apache.doris.thrift.TExplainLevel;
+
+import org.apache.hadoop.hive.metastore.api.FieldSchema;
+import org.apache.hadoop.hive.metastore.api.Table;
+import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
+import org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc;
+import org.apache.hadoop.hive.serde2.typeinfo.TypeInfoFactory;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import com.google.common.base.Strings;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.ListIterator;
+import java.util.Map;
+
+public class HiveScanNode extends BrokerScanNode{
+    private static final Logger LOG = LogManager.getLogger(HiveScanNode.class);
+
+    private static final String HIVE_DEFAULT_COLUMN_SEPARATOR = "\001";
+    private static final String HIVE_DEFAULT_LINE_DELIMITER = "\n";
+
+    private HiveTable hiveTable;
+    // partition column predicates of hive table
+    private List<ExprNodeDesc> hivePredicates = new ArrayList<>();
+    private ExprNodeGenericFuncDesc hivePartitionPredicate;
+    private List<ImportColumnDesc> parsedColumnExprList = new ArrayList<>();
+    private String hdfsUri;
+
+    private Table remoteHiveTable;
+
+    /* hive table properties */
+    private String columnSeparator;
+    private String lineDelimiter;
+    private String fileFormat;
+    private String path;
+    private List<String> partitionKeys = new ArrayList<>();
+    /* hive table properties */
+
+    public String getHdfsUri() {
+        return hdfsUri;
+    }
+
+    public List<ImportColumnDesc> getParsedColumnExprList() {
+        return parsedColumnExprList;
+    }
+
+    public String getColumnSeparator() {
+        return columnSeparator;
+    }
+
+    public String getLineDelimiter() {
+        return lineDelimiter;
+    }
+
+    public String getFileFormat() {
+        return fileFormat;
+    }
+
+    public String getPath() {
+        return path;
+    }
+
+    public List<String> getPartitionKeys() {
+        return partitionKeys;
+    }
+
+    public HiveScanNode(PlanNodeId id, TupleDescriptor destTupleDesc, String planNodeName,
+                        List<List<TBrokerFileStatus>> fileStatusesList, int filesAdded) {
+        super(id, destTupleDesc, planNodeName, fileStatusesList, filesAdded);
+        this.hiveTable = (HiveTable) destTupleDesc.getTable();
+    }
+
+    @Override
+    public void init(Analyzer analyzer) throws UserException {
+        initHiveTblProperties();
+        if (partitionKeys.size() > 0) {
+            extractHivePartitionPredicate(analyzer);
+        }
+        analyzeColumnFromPath();
+        super.init(analyzer);

Review comment:
       Refactored




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