001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.reifier;
018
019import org.apache.camel.Expression;
020import org.apache.camel.Predicate;
021import org.apache.camel.Processor;
022import org.apache.camel.model.LoopDefinition;
023import org.apache.camel.model.ProcessorDefinition;
024import org.apache.camel.processor.LoopProcessor;
025import org.apache.camel.spi.RouteContext;
026
027public class LoopReifier extends ExpressionReifier<LoopDefinition> {
028
029    public LoopReifier(ProcessorDefinition<?> definition) {
030        super((LoopDefinition)definition);
031    }
032
033    @Override
034    public Processor createProcessor(RouteContext routeContext) throws Exception {
035        Processor output = this.createChildProcessor(routeContext, true);
036        boolean isCopy = definition.getCopy() != null && definition.getCopy();
037        boolean isWhile = definition.getDoWhile() != null && definition.getDoWhile();
038
039        Predicate predicate = null;
040        Expression expression = null;
041        if (isWhile) {
042            predicate = definition.getExpression().createPredicate(routeContext);
043        } else {
044            expression = definition.getExpression().createExpression(routeContext);
045        }
046        return new LoopProcessor(output, expression, predicate, isCopy);
047    }
048
049}