/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * 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 the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>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.apereo.portal.groups.pags.testers;

import java.util.regex.Pattern;
import org.apereo.portal.groups.pags.dao.IPersonAttributesGroupTestDefinition;

/**
 * A tester for matching the possibly multiple values of an attribute against a regular expression
 * and returning true for a FAILURE to match. The match function attempts to match the entire region
 * against the pattern specified.
 *
 * <p>For example, if the pattern is specified as "<strong><code>^02([A-D])*</code></strong>":
 * <code>
 * <table border='2' width='100%'>
 *  <tr>
 *    <td><strong>Input</strong></td><td><strong>Matches</strong></td>
 *  </tr>
 *  <tr>
 *    <td>02A</td><td>No</td>
 *  </tr>
 *  <tr>
 *    <td>02ABCD</td><td>No</td>
 *  </tr>
 *  <tr>
 *    <td>A02D</td><td>Yes</td>
 *  </tr>
 *  <tr>
 *    <td>02</td><td>No</td>
 *  </tr>
 *  <tr>
 *    <td>02MisMatch</td><td>Yes</td>
 *  </tr>
 *  <tr>
 *    <td>PatternWillNeverMatch</td><td>Yes</td>
 *  </tr>
 * </table>
 * </code>
 *
 */
public class InvertedRegexTester extends AbstractStringTester {

    protected Pattern pattern;

    /** @since 4.3 */
    public InvertedRegexTester(IPersonAttributesGroupTestDefinition definition) {
        super(definition);
        this.pattern = Pattern.compile(definition.getTestValue());
    }

    /**
     * Sets the pattern string to use for the regex test.
     *
     * @param patternString regex pattern string
     */
    protected void setPattern(String patternString) {
        pattern = Pattern.compile(patternString);
    }

    @Override
    public boolean test(String att) {
        return !pattern.matcher(att).matches();
    }

}