/*
* 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.el;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import com.ocpsoft.pretty.PrettyException;
import com.ocpsoft.pretty.faces.config.mapping.PathParameter;
import com.ocpsoft.pretty.faces.el.processor.Injected;
import com.ocpsoft.pretty.faces.el.processor.Named;
import com.ocpsoft.pretty.faces.el.processor.NamedInjected;
import com.ocpsoft.pretty.faces.el.processor.PathParameterProcessor;
import com.ocpsoft.pretty.faces.el.processor.PlainText;
import com.ocpsoft.pretty.faces.el.processor.RegexOverride;
public abstract class ExpressionProcessorRunner
{
public static final List<PathParameterProcessor> processors;
public static final List<PathParameterProcessor> preProcessors;
static
{
List<PathParameterProcessor> temp = new ArrayList<PathParameterProcessor>();
temp.add(new Named());
temp.add(new NamedInjected());
temp.add(new Injected());
temp.add(new PlainText());
processors = Collections.unmodifiableList(temp);
temp = new ArrayList<PathParameterProcessor>();
temp.add(new RegexOverride());
preProcessors = Collections.unmodifiableList(temp);
}
public static PathParameter process(final String expression)
{
PathParameter result = new PathParameter();
result.setExpression(new ConstantExpression(expression));
for (PathParameterProcessor p : preProcessors)
{
result = p.process(result);
}
for (PathParameterProcessor p : processors)
{
result = p.process(result);
}
if (result == null)
{
throw new PrettyException("Malformed EL expression: " + expression + ", discovered.");
}
return result;
}
// public static PathParameter preprocess(final String expression)
// {
// PathParameter result = new PathParameter();
// result.setExpression(expression);
//
// for (PathParameterProcessor p : preProcessors)
// {
// result = p.process(result);
// }
//
// if (result == null)
// {
// throw new PrettyException("Malformed EL expression: " + expression +
// ", discovered.");
// }
//
// return result;
// }
}