com.sun.jersey.server.impl.uri.rules.AtomicMatchingPatterns Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jersey.server.impl.uri.rules;
import com.sun.jersey.api.uri.UriPattern;
import com.sun.jersey.spi.uri.rules.UriMatchResultContext;
import com.sun.jersey.spi.uri.rules.UriRules;
import java.util.Collection;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.regex.MatchResult;
/**
* Rules associated with instances of {@link UriPattern) and matched
* to return at most one match.
*
* The class will iterate through the collection of {@link UriPattern) until
* a match is found. Note that this does not scale.
*
* @author [email protected]
*/
public final class AtomicMatchingPatterns implements UriRules {
private final Collection> rules;
public AtomicMatchingPatterns(Collection> rules) {
this.rules = rules;
}
public Iterator match(CharSequence path, UriMatchResultContext resultContext) {
if (resultContext.isTracingEnabled()) {
StringBuilder sb = new StringBuilder();
sb.append("match path \"").append(path).append("\" -> ");
boolean first = true;
for (PatternRulePair prp : rules) {
if (!first)
sb.append(", ");
sb.append("\"").append(prp.p.toString()).append("\"");
first = false;
}
resultContext.trace(sb.toString());
}
for (PatternRulePair prp : rules) {
// Match each template
final MatchResult mr = prp.p.match(path);
if (mr != null) {
resultContext.setMatchResult(mr);
return new SingleEntryIterator(prp.r);
}
}
return new EmptyIterator();
}
private static final class SingleEntryIterator implements Iterator {
private T t;
SingleEntryIterator(T t) {
this.t = t;
}
public boolean hasNext() {
return t != null;
}
public T next() {
if (hasNext()) {
final T _t = t;
t = null;
return _t;
} else {
throw new NoSuchElementException();
}
}
public void remove() {
throw new UnsupportedOperationException();
}
}
private static final class EmptyIterator implements Iterator {
public boolean hasNext() {
return false;
}
public T next() {
throw new NoSuchElementException();
}
public void remove() {
throw new UnsupportedOperationException();
}
}
}