org.springframework.ldap.filter.LikeFilter Maven / Gradle / Ivy
/*
* Copyright 2005-2013 the original author or authors.
*
* 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.springframework.ldap.filter;
import org.springframework.ldap.support.LdapEncoder;
/**
* This filter allows the user to specify wildcards (*) by not escaping them in
* the filter. The following code:
*
*
* LikeFilter filter = new LikeFilter("cn", "foo*");
* System.out.println(filter.ecode());
*
*
* would result in:
*
*
* (cn=foo*)
*
*
* @author Anders Henja
* @author Mattias Hellborg Arthursson
*/
public class LikeFilter extends EqualsFilter {
public LikeFilter(String attribute, String value) {
super(attribute, value);
}
protected String encodeValue(String value) {
// just return if blank string
if (value == null) {
return "";
}
String[] substrings = value.split("\\*", -2);
if (substrings.length == 1) {
return LdapEncoder.filterEncode(substrings[0]);
}
StringBuilder buff = new StringBuilder();
for (int i = 0; i < substrings.length; i++) {
buff.append(LdapEncoder.filterEncode(substrings[i]));
if (i < substrings.length - 1) {
buff.append("*");
}
}
return buff.toString();
}
}