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/**
 * Copyright 2009-2010 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 net.javacrumbs.springws.test.lookup;

import java.io.IOException;
import java.net.URI;

import net.javacrumbs.springws.test.expression.ExpressionResolverException;

import org.springframework.core.io.Resource;
import org.springframework.ws.WebServiceMessage;
import org.w3c.dom.Document;


/**
 * Loads resources based on expressions and message content. Iterates over
 * expressions, evaluates them and looks for resources with given name. If resource is found, it is returned, if
 * it is not found another expression is applied. If no result is found, null is
 * returned.
 * XPathResourceLookup
 * 
* * Following variables can be used: *
    *
  • $uri for service URI.
  • *
  • $context.departureTime
  • *
  • Expressions like $uri.host *
* * @author Lukas Krecan * */ public class ExpressionBasedResourceLookup extends AbstractResourceLookup { private String[] resourceExpressions; /** * Iterates over expressions, evaluates them and looks for resource with corresponding name. */ public Resource lookupResource(URI uri, WebServiceMessage message) throws IOException { if (resourceExpressions != null) { Document document = loadDocument(message); for (String resourceExpression: resourceExpressions) { try { Resource resultResource = findResourceForExpression(resourceExpression, uri, document); if (resultResource!=null) { logger.debug("Found resource "+resultResource); return processResource(uri, message, resultResource); } } catch(ExpressionResolverException e) { logger.warn("Resolution of expression \""+resourceExpression+"\" failed.",e); } } } return null; } /** * Looks for a resource using given expression. * @param xpath * @param uri * @param document * @return */ protected Resource findResourceForExpression(String xpath, URI uri, Document document) { String resourcePath = evaluateExpression(xpath, uri, document); logger.debug("Looking for resource \"" + resourcePath + "\""); Resource resultResource = getResourceLoader().getResource(resourcePath); resultResource = resultResource.exists() ? resultResource : null; return resultResource; } public String[] getResourceExpressions() { return resourceExpressions; } public void setResourceExpressions(String... resourceExpressions) { this.resourceExpressions = resourceExpressions; } }




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