Revert "KYLIN-2816 wrap columns with backtick"

This reverts commit 53b25c6137731c1b0d26925be7dcaa0252d75b64.


Project: http://git-wip-us.apache.org/repos/asf/kylin/repo
Commit: http://git-wip-us.apache.org/repos/asf/kylin/commit/81e9f573
Tree: http://git-wip-us.apache.org/repos/asf/kylin/tree/81e9f573
Diff: http://git-wip-us.apache.org/repos/asf/kylin/diff/81e9f573

Branch: refs/heads/master
Commit: 81e9f573fae2af9511ac6004f69101598fc7a71a
Parents: dbecb9b
Author: Hongbin Ma <mahong...@apache.org>
Authored: Mon Aug 28 19:19:10 2017 +0800
Committer: Hongbin Ma <m...@kyligence.io>
Committed: Tue Aug 29 10:36:10 2017 +0800

----------------------------------------------------------------------
 .../org/apache/kylin/job/JoinedFlatTable.java   | 77 ++------------------
 .../kylin/job/TestWrapColumnWithBacktick.java   | 57 ---------------
 .../metadata/model/tool/CalciteParser.java      |  8 +-
 3 files changed, 7 insertions(+), 135 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/kylin/blob/81e9f573/core-job/src/main/java/org/apache/kylin/job/JoinedFlatTable.java
----------------------------------------------------------------------
diff --git a/core-job/src/main/java/org/apache/kylin/job/JoinedFlatTable.java 
b/core-job/src/main/java/org/apache/kylin/job/JoinedFlatTable.java
index 4ac5a3a..824c693 100644
--- a/core-job/src/main/java/org/apache/kylin/job/JoinedFlatTable.java
+++ b/core-job/src/main/java/org/apache/kylin/job/JoinedFlatTable.java
@@ -21,17 +21,11 @@ package org.apache.kylin.job;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
-import java.util.Comparator;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-import org.apache.calcite.sql.SqlIdentifier;
-import org.apache.calcite.sql.SqlNode;
-import org.apache.calcite.sql.util.SqlBasicVisitor;
 import org.apache.kylin.common.KylinConfig;
-import org.apache.kylin.common.util.Pair;
 import org.apache.kylin.cube.CubeSegment;
 import org.apache.kylin.job.engine.JobEngineConfig;
 import org.apache.kylin.metadata.model.DataModelDesc;
@@ -41,9 +35,6 @@ import org.apache.kylin.metadata.model.JoinTableDesc;
 import org.apache.kylin.metadata.model.PartitionDesc;
 import org.apache.kylin.metadata.model.TableRef;
 import org.apache.kylin.metadata.model.TblColRef;
-import org.apache.kylin.metadata.model.tool.CalciteParser;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  *
@@ -52,7 +43,6 @@ import org.slf4j.LoggerFactory;
 public class JoinedFlatTable {
 
     public static final String BACKTICK = "`";
-    private static final Logger logger = 
LoggerFactory.getLogger(JoinedFlatTable.class);
 
     public static String getTableDir(IJoinedFlatTableDesc flatDesc, String 
storageDfsDir) {
         return storageDfsDir + "/" + flatDesc.getTableName();
@@ -140,7 +130,11 @@ public class JoinedFlatTable {
                 sql.append(",");
             }
             String colTotalName = String.format("%s.%s", 
col.getTableRef().getTableName(), col.getName());
-            String expressionInSourceDB = 
quoteOriginalColumnWithBacktick(col.getExpressionInSourceDB());
+            String expressionInSourceDB = col.getExpressionInSourceDB();
+            if (expressionInSourceDB.contains(".")) {
+                // surround column name with back-tick, to support unicode 
column name
+                expressionInSourceDB = expressionInSourceDB.replace(".", "." + 
BACKTICK) + BACKTICK;
+            }
             if (skipAsList.contains(colTotalName)) {
                 sql.append(expressionInSourceDB + sep);
             } else {
@@ -283,65 +277,4 @@ public class JoinedFlatTable {
         return sql.toString();
     }
 
-    /**
-     * quote column name with back-tick, to support unicode column name
-     *
-     * @param sourceSQL
-     * @return
-     */
-    static String quoteOriginalColumnWithBacktick(String sourceSQL) {
-        StringBuilder result = new StringBuilder(sourceSQL);
-        try {
-            List<Pair<Integer, Integer>> replacePoses = new ArrayList<>();
-            for (SqlIdentifier id : 
SqlIdentifierVisitor.getAllSqlIdentifier(CalciteParser.getExpNode(sourceSQL))) {
-                
replacePoses.add(CalciteParser.getReplacePos(id.getComponentParserPosition(1), 
"select " + sourceSQL + " from t"));
-            }
-
-            // latter replace position in the front of the list.
-            Collections.sort(replacePoses, new Comparator<Pair<Integer, 
Integer>>() {
-                @Override
-                public int compare(Pair<Integer, Integer> o1, Pair<Integer, 
Integer> o2) {
-                    return -(o1.getSecond() - o2.getSecond());
-                }
-            });
-
-            // cuz the pos is add "select "'s size, so minus 7 offset.
-            final int OFFSET = 7;
-            for (Pair<Integer, Integer> replacePos : replacePoses) {
-                result.insert(replacePos.getSecond() - OFFSET, "`");
-                result.insert(replacePos.getFirst() - OFFSET, "`");
-            }
-        } catch (Exception e) {
-            logger.error("quote original column with backtick fail.Return 
origin SQL." + e.getMessage());
-        }
-
-        return result.toString();
-    }
-
-
-    static class SqlIdentifierVisitor extends SqlBasicVisitor<SqlNode> {
-        private List<SqlIdentifier> sqlIdentifier;
-
-        SqlIdentifierVisitor() {
-            this.sqlIdentifier = new ArrayList<>();
-        }
-
-        List<SqlIdentifier> getSqlIdentifier() {
-            return sqlIdentifier;
-        }
-
-        static List<SqlIdentifier> getAllSqlIdentifier(SqlNode node) {
-            SqlIdentifierVisitor siv = new SqlIdentifierVisitor();
-            node.accept(siv);
-            return siv.getSqlIdentifier();
-        }
-
-        @Override
-        public SqlNode visit(SqlIdentifier id) {
-            if (id.names.size() == 2) {
-                sqlIdentifier.add(id);
-            }
-            return null;
-        }
-    }
 }

http://git-wip-us.apache.org/repos/asf/kylin/blob/81e9f573/core-job/src/test/java/org/apache/kylin/job/TestWrapColumnWithBacktick.java
----------------------------------------------------------------------
diff --git 
a/core-job/src/test/java/org/apache/kylin/job/TestWrapColumnWithBacktick.java 
b/core-job/src/test/java/org/apache/kylin/job/TestWrapColumnWithBacktick.java
deleted file mode 100644
index 0c55ba7..0000000
--- 
a/core-job/src/test/java/org/apache/kylin/job/TestWrapColumnWithBacktick.java
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * 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.kylin.job;
-
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-
-public class TestWrapColumnWithBacktick {
-    @Test
-    public void testWrapColumnNameInFlatTable() {
-        String input1 = "SELLER_ACCOUNT.ACCOUNT_SELLER_LEVEL";
-        String expected1 = "SELLER_ACCOUNT.`ACCOUNT_SELLER_LEVEL`";
-        String input2 = "year(TEST_KYLIN_FACT.CAL_DT)";
-        String expected2 = "year(TEST_KYLIN_FACT.`CAL_DT`)";
-        String input3 = "SUBSTR(SELLER_ACCOUNT.ACCOUNT_COUNTRY,0,1)";
-        String expected3 = "SUBSTR(SELLER_ACCOUNT.`ACCOUNT_COUNTRY`,0,1)";
-        String input4 = "CONCAT(SELLER_ACCOUNT.ACCOUNT_ID, 
SELLER_COUNTRY.NAME)";
-        String expected4 = "CONCAT(SELLER_ACCOUNT.`ACCOUNT_ID`, 
SELLER_COUNTRY.`NAME`)";
-        String input5 = "SELLER_ACCOUNT.ACCOUNT_SELLER_LEVEL*1.1";
-        String expected5 = "SELLER_ACCOUNT.`ACCOUNT_SELLER_LEVEL`*1.1";
-        String input6 = 
"SELLER_ACCOUNT.ACCOUNT_SELLER_LEVEL*SELLER_ACCOUNT.ACCOUNT_SELLER_LEVEL";
-        String expected6 = 
"SELLER_ACCOUNT.`ACCOUNT_SELLER_LEVEL`*SELLER_ACCOUNT.`ACCOUNT_SELLER_LEVEL`";
-        String input7 = "CONCAT(SELLER_ACCOUNT.ACCOUNT_ID, 'HELLO.WORLD')";
-        String expected7 =  "CONCAT(SELLER_ACCOUNT.`ACCOUNT_ID`, 
'HELLO.WORLD')";
-        String input8 = "CONCAT(SELLER_ACCOUNT.ACCOUNT_ID, 
SELLER_ACCOUNT.ACCOUNT_ID2)";
-        String expected8 =  "CONCAT(SELLER_ACCOUNT.`ACCOUNT_ID`, 
SELLER_ACCOUNT.`ACCOUNT_ID2`)";
-        String input9 = "CONCAT(SELLER_ACCOUNT.ACCOUNT_ID, 
SELLER_ACCOUNT.ACCOUNT_ID2, SELLER_ACCOUNT.ACCOUNT_ID3)";
-        String expected9 =  "CONCAT(SELLER_ACCOUNT.`ACCOUNT_ID`, 
SELLER_ACCOUNT.`ACCOUNT_ID2`, SELLER_ACCOUNT.`ACCOUNT_ID3`)";
-
-        assertEquals(expected1, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input1));
-        assertEquals(expected2, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input2));
-        assertEquals(expected3, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input3));
-        assertEquals(expected4, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input4));
-        assertEquals(expected5, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input5));
-        assertEquals(expected6, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input6));
-        assertEquals(expected7, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input7));
-        assertEquals(expected8, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input8));
-        assertEquals(expected9, 
JoinedFlatTable.quoteOriginalColumnWithBacktick(input9));
-    }
-}

http://git-wip-us.apache.org/repos/asf/kylin/blob/81e9f573/core-metadata/src/main/java/org/apache/kylin/metadata/model/tool/CalciteParser.java
----------------------------------------------------------------------
diff --git 
a/core-metadata/src/main/java/org/apache/kylin/metadata/model/tool/CalciteParser.java
 
b/core-metadata/src/main/java/org/apache/kylin/metadata/model/tool/CalciteParser.java
index 09f2f28..fdad33a 100644
--- 
a/core-metadata/src/main/java/org/apache/kylin/metadata/model/tool/CalciteParser.java
+++ 
b/core-metadata/src/main/java/org/apache/kylin/metadata/model/tool/CalciteParser.java
@@ -32,11 +32,11 @@ import org.apache.calcite.sql.parser.SqlParser;
 import org.apache.calcite.sql.parser.SqlParserPos;
 import org.apache.calcite.sql.util.SqlBasicVisitor;
 import org.apache.calcite.sql.util.SqlVisitor;
-import org.apache.kylin.common.util.Pair;
 
 import com.google.common.base.Preconditions;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
+import org.apache.kylin.common.util.Pair;
 
 public class CalciteParser {
     public static SqlNode parse(String sql) throws SqlParseException {
@@ -127,15 +127,11 @@ public class CalciteParser {
     }
 
     public static Pair<Integer, Integer> getReplacePos(SqlNode node, String 
inputSql) {
-        SqlParserPos pos = node.getParserPosition();
-        return getReplacePos(pos, inputSql);
-    }
-
-    public static Pair<Integer, Integer> getReplacePos(SqlParserPos pos, 
String inputSql) {
         if (inputSql == null) {
             return Pair.newPair(0, 0);
         }
         String[] lines = inputSql.split("\n");
+        SqlParserPos pos = node.getParserPosition();
         int lineStart = pos.getLineNum();
         int lineEnd = pos.getEndLineNum();
         int columnStart = pos.getColumnNum() - 1;

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