org.apache.jackrabbit.oak.plugins.nodetype.constraint.StringConstraint Maven / Gradle / Ivy
/*
* 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.jackrabbit.oak.plugins.nodetype.constraint;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import com.google.common.base.Predicate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class StringConstraint implements Predicate {
private static final Logger log = LoggerFactory.getLogger(StringConstraint.class);
private final Pattern pattern;
public StringConstraint(String definition) {
Pattern p;
try {
p = Pattern.compile(definition);
}
catch (PatternSyntaxException pse) {
String msg = '\'' + definition + "' is not valid regular expression syntax";
log.warn(msg);
p = null;
}
pattern = p;
}
@Override
public boolean apply(Value value) {
if (value == null) {
return false;
}
try {
Matcher matcher = pattern.matcher(value.getString());
return matcher.matches();
}
catch (RepositoryException e) {
log.warn("Error checking string constraint " + this, e);
return false;
}
}
@Override
public String toString() {
return "'" + pattern + '\'';
}
}