001/*
002 * Copyright 2002-2014 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.context.support;
018
019import org.springframework.context.EmbeddedValueResolverAware;
020import org.springframework.util.StringValueResolver;
021
022/**
023 * Convenient base class for components with a need for embedded value resolution
024 * (i.e. {@link org.springframework.context.EmbeddedValueResolverAware} consumers).
025 *
026 * @author Juergen Hoeller
027 * @since 4.1
028 */
029public class EmbeddedValueResolutionSupport implements EmbeddedValueResolverAware {
030
031        private StringValueResolver embeddedValueResolver;
032
033
034        @Override
035        public void setEmbeddedValueResolver(StringValueResolver resolver) {
036                this.embeddedValueResolver = resolver;
037        }
038
039        /**
040         * Resolve the given embedded value through this instance's {@link StringValueResolver}.
041         * @param value the value to resolve
042         * @return the resolved value, or always the original value if no resolver is available
043         * @see #setEmbeddedValueResolver
044         */
045        protected String resolveEmbeddedValue(String value) {
046                return (this.embeddedValueResolver != null ? this.embeddedValueResolver.resolveStringValue(value) : value);
047        }
048
049
050}