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   * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
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   * may not use this file except in compliance with the License.  You can
  * obtain a copy of the License at
  * or packager/legal/LICENSE.txt.  See the License for the specific
  * language governing permissions and limitations under the License.
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  * GPL Classpath Exception:
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  * exception as provided by Oracle in the GPL Version 2 section of the License
  * file that accompanied this code.
  * Modifications:
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  * enclosed by brackets [] replaced by your own identifying information:
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  * recipient has the option to distribute your version of this file under
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  * 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;
Adapter to an existing rule that accepts the rule using the last capturing group value as the URI path.

This rule assumes that the pattern used to match this rule has certain contraints. If a pattern contains one or more capturing groups then the last capturing group MUST occur at the end of the pattern and MUST be '(/.*)?' or '(/)?'.

If the source from which the pattern was derived ends in a '/' and the matched path does not end in a '/' then a temporary redirect response is returned with a path that is the matched path appened with '/'.

 public class RightHandPathRule implements UriRule {
     private final boolean redirect;
     private final boolean patternEndsInSlash;
     private final UriRule rule;
Public constructor.

redirect if true return a temporary redirect response if the path does not end in '/' and the pattern ends in '/'.
patternEndsInSlash true if the pattern used to match with rule end in a '/', otherwise false.
rule the URI rule that is adapted.
     public RightHandPathRule(final boolean redirectfinal boolean patternEndsInSlashfinal UriRule rule) {
         assert rule != null;
         this. = redirect;
         this. = patternEndsInSlash;
         this. = rule;

     public final boolean accept(CharSequence pathObject resourceUriRuleContext context) {
         String rhpath = getRightHandPath(context.getMatchResult());
        if (rhpath.length() == 0) {
            // Redirect to path ending with a '/' if pattern
            // ends in '/' and redirect is true
            if ( && ) {
                if (context.isTracingEnabled()) {
                            "accept right hand path redirect: \"%s\" to \"%s/\"",
                return redirect(context);
        } else if (rhpath.length() == 1) {
            // Path is '/', no match if pattern does not end in a '/'
            // and redirect is true
            if (! && )
                return false;
            // Consume the '/'
            rhpath = "";
        } else {
            if () {
                context.pushRightHandPathLength(rhpath.length() - 1);
            } else {
        if (context.isTracingEnabled()) {
            CharSequence lhpath = path.subSequence(0, path.length() - rhpath.length());
                    "accept right hand path %s: \"%s\" -> \"%s\" : \"%s\"",
        // Accept using the right hand path
        return .accept(rhpathresourcecontext);
Get the right hand path from the match result. The right hand path is the last group (if present).

mr the match result.
the right hand path, or the empty string if there is no last group.
    private String getRightHandPath(final MatchResult mr) {
        final String rhp = (mr.groupCount() > 0) ? : "";
        return (rhp != null) ? rhp : "";

Redirect to a URI that ends in a slash.

context The URI rule context
Redirect or not? TODO use the complete URI.
    private boolean redirect(final UriRuleContext context) {
        final HttpResponseContext response = context.getResponse();
        return true;
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