org.jooq.impl.Identifiers Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
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*/
package org.jooq.impl;
import java.util.EnumMap;
import org.jooq.SQLDialect;
/**
* An internal utility class for SQL identifiers.
*
* @author Lukas Eder
*/
final class Identifiers {
/**
* The structure is:
*
*
* SQLDialect -> {
* { main start delimiter, alternative start delimiter, ... },
* { main end delimiter, alternative end delimiter, ... },
* { main escaped end delimiter, alternative escaped end delimiter, ... },
* ...
* }
*
*/
static final EnumMap QUOTES;
static final int QUOTE_START_DELIMITER = 0;
static final int QUOTE_END_DELIMITER = 1;
static final int QUOTE_END_DELIMITER_ESCAPED = 2;
static {
QUOTES = new EnumMap(SQLDialect.class);
for (SQLDialect family : SQLDialect.families()) {
switch (family) {
// MySQL supports backticks and double quotes
case MARIADB:
case MYSQL:
QUOTES.put(family, new String[][] {
{ "`" , "\""},
{ "`" , "\""},
{ "``", "\"\"" }
});
break;
// Most dialects implement the SQL standard, using double quotes
case CUBRID:
case DERBY:
case FIREBIRD:
case H2:
case HSQLDB:
case POSTGRES:
case SQLITE:
default:
QUOTES.put(family, new String[][] {
{ "\""},
{ "\""},
{ "\"\"" }
});
break;
}
}
}
}