org.ocpsoft.rewrite.servlet.config.HttpOperation Maven / Gradle / Ivy
/*
* Copyright 2011 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 org.ocpsoft.rewrite.servlet.config;
import org.ocpsoft.rewrite.config.Operation;
import org.ocpsoft.rewrite.config.DefaultOperationBuilder;
import org.ocpsoft.rewrite.context.EvaluationContext;
import org.ocpsoft.rewrite.event.Rewrite;
import org.ocpsoft.rewrite.servlet.http.event.HttpServletRewrite;
/**
* An {@link Operation} that is only performed if the current {@link org.ocpsoft.rewrite.event.Rewrite} event is an instance of
* {@link HttpServletRewrite}
*
* @author Lincoln Baxter, III
*/
public abstract class HttpOperation extends DefaultOperationBuilder
{
/**
* Perform this operation for the given {@link HttpServletRewrite} event.
*/
public abstract void performHttp(HttpServletRewrite event, EvaluationContext context);
@Override
public final void perform(final Rewrite event, final EvaluationContext context)
{
if (event instanceof HttpServletRewrite)
{
performHttp((HttpServletRewrite) event, context);
}
else {
throw new IllegalArgumentException("Cannot apply " + HttpOperation.class.getName() + " to event of type ["
+ event.getClass().getName() + "]. Must be of type " + HttpServletRewrite.class.getName());
}
}
}