com.ocpsoft.pretty.faces.rewrite.RewriteEngine Maven / Gradle / Ivy
/*
* Copyright 2010 Lincoln Baxter, III
*
* 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.ocpsoft.pretty.faces.rewrite;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ocpsoft.pretty.faces.config.rewrite.RewriteRule;
import com.ocpsoft.pretty.faces.rewrite.processor.CaseProcessor;
import com.ocpsoft.pretty.faces.rewrite.processor.CustomClassProcessor;
import com.ocpsoft.pretty.faces.rewrite.processor.RegexProcessor;
import com.ocpsoft.pretty.faces.rewrite.processor.TrailingSlashProcessor;
import com.ocpsoft.pretty.faces.rewrite.processor.UrlProcessor;
/**
* Process URL rewrites based on configuration
*
* @author Lincoln Baxter, III
*/
public class RewriteEngine
{
private static List processors;
static
{
List list = new ArrayList();
list.add(new RegexProcessor());
list.add(new CaseProcessor());
list.add(new TrailingSlashProcessor());
list.add(new CustomClassProcessor());
list.add(new UrlProcessor());
processors = Collections.unmodifiableList(list);
}
/**
* Rewrite the given URL using the provided {@link RewriteRule} object as a set of rules.
*
* @return The rewritten URL, or the unchanged URL if no action was taken.
*/
public String processInbound(final HttpServletRequest request, final HttpServletResponse response,
final RewriteRule rule, final String url)
{
String result = url;
if ((rule != null) && rule.isInbound() && rule.matches(url))
{
for (Processor p : processors)
{
result = p.processInbound(request, response, rule, result);
}
}
return result;
}
/**
* Rewrite the given URL using the provided {@link RewriteRule} object. Process the URL only if the rule is set to
* outbound="true"
*
* @return The rewritten URL, or the unchanged URL if no action was taken.
*/
public String processOutbound(final HttpServletRequest request, final HttpServletResponse response,
final RewriteRule rule, final String url)
{
String result = url;
if ((rule != null) && rule.isOutbound() && rule.matches(url))
{
for (Processor p : processors)
{
result = p.processOutbound(request, response, rule, result);
}
}
return result;
}
}