/*
* Copyright 2002-2017 the original author or authors.
*
* 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.springframework.integration.router;
import org.springframework.expression.Expression;
import org.springframework.integration.handler.ExpressionEvaluatingMessageProcessor;
/**
* A Message Router implementation that evaluates the specified SpEL
* expression. The result of evaluation will typically be a String to be
* resolved to a channel name or a Collection (or Array) of strings.
*
* @author Mark Fisher
* @author Gary Russell
* @since 2.0
*/
public class ExpressionEvaluatingRouter extends AbstractMessageProcessingRouter {
/**
* Construct an instance by parsing the supplied expression string.
* @param expressionString the expression string.
*/
public ExpressionEvaluatingRouter(String expressionString) {
this(EXPRESSION_PARSER.parseExpression(expressionString));
}
/**
* Construct an instance with the supplied {@link Expression}.
* @param expression the expression.
*/
public ExpressionEvaluatingRouter(Expression expression) {
super(new ExpressionEvaluatingMessageProcessor<Object>(expression));
setPrimaryExpression(expression);
}
}