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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.el;
import javax.el.ELContext;
import javax.el.ELResolver;
import javax.el.ExpressionFactory;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import org.apache.el.lang.ELSupport;
import org.apache.el.lang.ExpressionBuilder;
import org.apache.el.stream.StreamELResolverImpl;
import org.apache.el.util.ExceptionUtils;
import org.apache.el.util.MessageFactory;
/**
* @see javax.el.ExpressionFactory
*
* @author Jacob Hookom [jacob@hookom.net]
*/
@aQute.bnd.annotation.spi.ServiceProvider(value=ExpressionFactory.class)
public class ExpressionFactoryImpl extends ExpressionFactory {
static {
ExceptionUtils.preload();
}
@Override
public Object coerceToType(Object obj, Class<?> type) {
return ELSupport.coerceToType(null, obj, type);
}
@Override
public MethodExpression createMethodExpression(ELContext context,
String expression, Class<?> expectedReturnType,
Class<?>[] expectedParamTypes) {
ExpressionBuilder builder = new ExpressionBuilder(expression, context);
return builder.createMethodExpression(expectedReturnType,
expectedParamTypes);
}
@Override
public ValueExpression createValueExpression(ELContext context,
String expression, Class<?> expectedType) {
if (expectedType == null) {
throw new NullPointerException(MessageFactory
.get("error.value.expectedType"));
}
ExpressionBuilder builder = new ExpressionBuilder(expression, context);
return builder.createValueExpression(expectedType);
}
@Override
public ValueExpression createValueExpression(Object instance,
Class<?> expectedType) {
if (expectedType == null) {
throw new NullPointerException(MessageFactory
.get("error.value.expectedType"));
}
return new ValueExpressionLiteral(instance, expectedType);
}
@Override
public ELResolver getStreamELResolver() {
return new StreamELResolverImpl();
}
}
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