/*
* Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
*
* 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 org.jboss.errai.jpa.rebind;
public class SqlUtil {
private SqlUtil() {}
/**
* "Unquotes" the given SQL String literal, and transforms the {@code ''}
* escape sequence to {@code '}.
*
* @param quotedString
* A string literal from a SQL/HQL/JPQL query. The first and last
* characters must be {@code '} (single quote).
* @return the given string with quotes removed and escape sequences removed.
*/
public static String parseStringLiteral(String quotedString) {
if ( ! (quotedString.charAt(0) == '\'' && quotedString.charAt(quotedString.length() - 1) == '\'')) {
throw new IllegalArgumentException("Not a valid quoted string literal: [" + quotedString + "]");
}
return quotedString.substring(1, quotedString.length() - 1).replace("''", "'");
}
}