/*
* 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.openjpa.jdbc.identifier;
import java.util.Set;
import org.apache.openjpa.jdbc.identifier.DBIdentifier.DBIdentifierType;
import org.apache.openjpa.lib.identifier.IdentifierRule;
/**
* The default DBIdentifier rule. Closely matches SQL92 naming rules.
*/
public class DBIdentifierRule extends IdentifierRule {
public static final String DEFAULT_SQL_92 = "DefaultSQL92";
public static final String SPECIAL_CHARS = " #$&%!?,.:;\"\'";
public DBIdentifierRule() {
setName(DEFAULT_SQL_92);
// SQL92 Identifier rule 1) Can be up to 128 characters long
// setMaxLength(128);
// OpenJPA allows names with a length of 255 by default
setMaxLength(255);
// SQL92 Identifier rule 2) Must begin with a letter
setMustBeginWithLetter(true);
// SQL92 Identifier rule 3) Can contain letters, digits, and underscores
setOnlyLettersDigitsUnderscores(true);
// SQL Identifier rule 4) Can't contain spaces or special characters such
// as #, $, &, %, or punctuation.
setSpecialCharacters(SPECIAL_CHARS);
}
public DBIdentifierRule(DBIdentifierType id, Set<String> reservedWords) {
this();
setName(id.toString());
// SQL Identifier rule 5) Can't be reserved words
setReservedWords(reservedWords);
}
}