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 */
017 package org.apache.camel.spi;
018
019 import org.apache.camel.Exchange;
020 import org.apache.camel.Expression;
021 import org.apache.camel.Predicate;
022
023 /**
024 * Represents a language to be used for {@link Expression} or {@link Predicate} instances
025 *
026 * @version $Revision: 688279 $
027 */
028 public interface Language {
029
030 /**
031 * Creates a predicate based on the given string input
032 *
033 * @param expression the expression
034 * @return the created predicate
035 */
036 Predicate<Exchange> createPredicate(String expression);
037
038 /**
039 * Creates an expression based on the given string input
040 *
041 * @param expression the expression as a string input
042 * @return the created expression
043 */
044 Expression<Exchange> createExpression(String expression);
045 }