com.evolveum.midpoint.prism.match.StringIgnoreCaseMatchingRule.java Source code

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Here is the source code for com.evolveum.midpoint.prism.match.StringIgnoreCaseMatchingRule.java

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/*
 * Copyright (c) 2010-2013 Evolveum
 *
 * 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 com.evolveum.midpoint.prism.match;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.xml.namespace.QName;

import org.apache.commons.lang.StringUtils;

import com.evolveum.midpoint.prism.PrismConstants;
import com.evolveum.midpoint.util.DOMUtil;

/**
 * String matching rule that ignores the case.
 * 
 * @author Radovan Semancik
 *
 */
public class StringIgnoreCaseMatchingRule implements MatchingRule<String> {

    public static final QName NAME = new QName(PrismConstants.NS_MATCHING_RULE, "stringIgnoreCase");

    @Override
    public QName getName() {
        return NAME;
    }

    @Override
    public boolean isSupported(QName xsdType) {
        return (DOMUtil.XSD_STRING.equals(xsdType));
    }

    /* (non-Javadoc)
     * @see com.evolveum.midpoint.model.match.MatchingRule#match(java.lang.Object, java.lang.Object)
     */
    @Override
    public boolean match(String a, String b) {
        if (a == null && b == null) {
            return true;
        }
        if (a == null || b == null) {
            return false;
        }
        return StringUtils.equalsIgnoreCase(a, b);
    }

    /* (non-Javadoc)
     * @see com.evolveum.midpoint.prism.match.MatchingRule#normalize(java.lang.Object)
     */
    @Override
    public String normalize(String original) {
        return StringUtils.lowerCase(original);
    }

    @Override
    public boolean matchRegex(String a, String regex) {
        if (a == null) {
            return false;
        }

        Pattern pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
        Matcher matcher = pattern.matcher(a);
        return matcher.matches();
    }

}