/*
* Copyright 2011 <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*
* 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 org.ocpsoft.rewrite.servlet.config;
import java.util.Set;
import javax.servlet.http.HttpServletRequest;
import org.ocpsoft.common.util.Assert;
import org.ocpsoft.rewrite.config.Condition;
import org.ocpsoft.rewrite.config.ConfigurationRuleParameterBuilder;
import org.ocpsoft.rewrite.context.EvaluationContext;
import org.ocpsoft.rewrite.param.ParameterStore;
import org.ocpsoft.rewrite.param.Parameterized;
import org.ocpsoft.rewrite.param.ParameterizedPattern;
import org.ocpsoft.rewrite.param.ParameterizedPatternParser;
import org.ocpsoft.rewrite.param.RegexParameterizedPatternParser;
import org.ocpsoft.rewrite.servlet.http.event.HttpOutboundServletRewrite;
import org.ocpsoft.rewrite.servlet.http.event.HttpServletRewrite;
import org.ocpsoft.urlbuilder.Address;
/**
* A {@link Condition} that inspects the value of {@link HttpServletRequest#getServerName()}
*
* @author <a href="mailto:lincolnbaxter@gmail.com">Lincoln Baxter, III</a>
*/
public class Domain extends HttpCondition implements Parameterized
{
private final ParameterizedPatternParser expression;
private Domain(final String pattern)
{
Assert.notNull(pattern, "Domain must not be null.");
this.expression = new RegexParameterizedPatternParser(pattern);
}
/**
* Create a {@link Domain} condition to inspect the current {@link Address#getDomain()}.
* <p>
* The given pattern may be parameterized:
* <p>
* <code>
* example.com
* {domain}.com <br>
* www.{domain}.{suffix} <br>
* ... and so on
* </code>
* <p>
*
* @param pattern {@link ParameterizedPattern} matching the domain name.
*
* @see {@link ConfigurationRuleParameterBuilder#where(String)} {@link HttpServletRequest#getServerName()}
*/
public static Domain matches(final String pattern)
{
return new Domain(pattern);
}
@Override
public boolean evaluateHttp(final HttpServletRewrite event, final EvaluationContext context)
{
String hostName = null;
if (event instanceof HttpOutboundServletRewrite)
{
hostName = event.getAddress().getDomain();
if (hostName == null)
hostName = event.getRequest().getServerName();
}
else
hostName = event.getRequest().getServerName();
return (hostName != null && expression.parse(hostName).submit(event, context));
}
/**
* Get the underlying {@link ParameterizedPatternParser} for this {@link Domain}
*/
public ParameterizedPatternParser getExpression()
{
return expression;
}
@Override
public String toString()
{
return "Domain.matches(\"" + expression.getPattern() + "\")";
}
@Override
public Set<String> getRequiredParameterNames()
{
return expression.getRequiredParameterNames();
}
@Override
public void setParameterStore(ParameterStore store)
{
expression.setParameterStore(store);
}
}