com.alibaba.druid.sql.dialect.hive.parser.HiveLexer Maven / Gradle / Ivy

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An JDBC datasource implementation.

There is a newer version: 1.2.23

/*
 * Copyright 1999-2018 Alibaba Group Holding Ltd.
 *
 * Licensed 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 com.alibaba.druid.sql.dialect.hive.parser;

import com.alibaba.druid.sql.parser.Keywords;
import com.alibaba.druid.sql.parser.Lexer;
import com.alibaba.druid.sql.parser.SQLParserFeature;
import com.alibaba.druid.sql.parser.Token;

import java.util.HashMap;
import java.util.Map;

public class HiveLexer extends Lexer {
    public final static Keywords DEFAULT_HIVE_KEYWORDS;

    static {
        Map map = new HashMap();

        map.putAll(Keywords.DEFAULT_KEYWORDS.getKeywords());

        map.put("OF", Token.OF);
        map.put("CONCAT", Token.CONCAT);
        map.put("CONTINUE", Token.CONTINUE);
        map.put("MERGE", Token.MERGE);
        map.put("MATCHED", Token.MATCHED);
        map.put("USING", Token.USING);

        map.put("ROW", Token.ROW);
        map.put("LIMIT", Token.LIMIT);
        map.put("PARTITIONED", Token.PARTITIONED);
        map.put("PARTITION", Token.PARTITION);
        map.put("OVERWRITE", Token.OVERWRITE);
        map.put("SORT", Token.SORT);
        map.put("IF", Token.IF);
        map.put("TRUE", Token.TRUE);
        map.put("FALSE", Token.FALSE);
        map.put("RLIKE", Token.RLIKE);

        DEFAULT_HIVE_KEYWORDS = new Keywords(map);
    }

    public HiveLexer(String input){
        super(input);
        super.keywods = DEFAULT_HIVE_KEYWORDS;
    }

    public HiveLexer(String input, SQLParserFeature... features){
        super(input);
        super.keywods = DEFAULT_HIVE_KEYWORDS;
        for (SQLParserFeature feature : features) {
            config(feature, true);
        }
    }
}