package com.thinkbiganalytics.policy.validation;
/*-
* #%L
* thinkbig-field-policy-default
* %%
* Copyright (C) 2017 ThinkBig Analytics
* %%
* 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.
* #L%
*/
import com.thinkbiganalytics.policy.PolicyProperty;
import com.thinkbiganalytics.policy.PolicyPropertyRef;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
@Validator(name = "Regex", description = "Validate Regex Pattern")
public class RegexValidator implements ValidationPolicy<String> {
private static final Logger log = LoggerFactory.getLogger(RegexValidator.class);
@PolicyProperty(name = "Regex expression")
private String regexExpression;
private Pattern pattern;
private boolean valid;
public RegexValidator(@PolicyPropertyRef(name = "Regex expression") String regex) {
try {
this.regexExpression = regex;
this.pattern = Pattern.compile(regex);
valid = true;
} catch (PatternSyntaxException e) {
log.error("Invalid regex [" + e + "]. All values will be valid.", e);
}
}
@Override
public boolean validate(String value) {
if (!valid) {
return true;
}
Matcher matcher = pattern.matcher(value);
return (matcher.matches());
}
public String getRegexExpression() {
return regexExpression;
}
public Pattern getPattern() {
return pattern;
}
}