blob: 2a296718917e6936a18574992a1ce8503d817f5a [file] [log] [blame]
/**
* 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.tajo.validation;
import java.util.Collection;
import java.util.Collections;
import java.util.regex.Pattern;
public class PatternValidator extends AbstractValidator {
private final Pattern pattern;
public PatternValidator(String patternString) {
pattern = Pattern.compile(patternString);
}
@Override
protected <T> String getErrorMessage(T object) {
return object + " does not match to the " + pattern.pattern();
}
@Override
protected <T> boolean validateInternal(T object) {
boolean result = false;
if (object != null) {
if (object instanceof CharSequence) {
String valueString = object.toString();
if (valueString.isEmpty()) {
result = true;
} else {
result = pattern.matcher((CharSequence) object).find();
}
}
} else {
result = true;
}
return result;
}
@Override
protected Collection<Validator> getDependantValidators() {
return Collections.emptySet();
}
}