com.wavemaker.commons.comparator.UrlComparator Maven / Gradle / Ivy
/**
* Copyright (C) 2020 WaveMaker, Inc.
*
* 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.wavemaker.commons.comparator;
import java.util.Comparator;
import org.springframework.util.AntPathMatcher;
/**
* Inspired from {@link AntPathMatcher.AntPatternComparator}.
* Sorts from most specific to least specific.
*
* @author ArjunSahasranam on 5/11/15.
*/
public abstract class UrlComparator implements Comparator {
@Override
public int compare(final T o1, final T o2) {
final String urlPattern1 = getUrlPattern(o1);
final String urlPattern2 = getUrlPattern(o2);
PatternInfo info1 = new PatternInfo(urlPattern1);
PatternInfo info2 = new PatternInfo(urlPattern2);
if (info1.isLeastSpecific() && info2.isLeastSpecific()) {
return 0;
} else if (info1.isLeastSpecific()) {
return 1;
} else if (info2.isLeastSpecific()) {
return -1;
}
if (info1.isPrefixPattern() && info2.getDoubleWildcards() == 0) {
return 1;
} else if (info2.isPrefixPattern() && info1.getDoubleWildcards() == 0) {
return -1;
}
if (info1.getTotalCount() != info2.getTotalCount()) {
return info1.getTotalCount() - info2.getTotalCount();
}
if (info1.getLength() != info2.getLength()) {
return info2.getLength() - info1.getLength();
}
if (info1.getSingleWildcards() < info2.getSingleWildcards()) {
return -1;
} else if (info2.getSingleWildcards() < info1.getSingleWildcards()) {
return 1;
}
if (info1.getUriVars() < info2.getUriVars()) {
return -1;
} else if (info2.getUriVars() < info1.getUriVars()) {
return 1;
}
return 0;
}
public abstract String getUrlPattern(T t);
}