ValidatingClientInterceptor.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.ws.client;
  17
  18 import java.io.IOException;
  19
  20 import javax.xml.transform.Source;
  21
  22 import org.springframework.ws.client.WebServiceClientException;
  23 import org.springframework.ws.client.WebServiceIOException;
  24 import org.springframework.ws.client.support.interceptor.ClientInterceptor;
  25 import org.springframework.ws.context.MessageContext;
  26 import org.springframework.xml.validation.XmlValidator;
  27 import org.xml.sax.SAXParseException;
  28
  29 import org.apache.commons.logging.Log;
  30 import org.apache.commons.logging.LogFactory;
  31
  32 public class ValidatingClientInterceptor implements ClientInterceptor {
  33         private final static Log log = LogFactory
  34                         .getLog(ValidatingClientInterceptor.class);
  35
  36         private Boolean validateRequest = true;
  37         private Boolean validateResponse = false;
  38         private XmlValidator validator = null;
  39
  40         public boolean handleFault(MessageContext messageContext)
  41                         throws WebServiceClientException {
  42                 return true;
  43         }
  44
  45         public boolean handleRequest(MessageContext messageContext)
  46                         throws WebServiceClientException {
  47                 if (validateRequest) {
  48                         if (messageContext.getRequest() == null)
  49                                 return true;
  50
  51                         Source source = messageContext.getRequest().getPayloadSource();
  52                         try {
  53                                 return validate(source);
  54                         } catch (IOException e) {
  55                                 throw new WebServiceIOException("Cannot validate request", e);
  56                         }
  57                 } else {
  58                         return true;
  59                 }
  60         }
  61
  62         public boolean handleResponse(MessageContext messageContext)
  63                         throws WebServiceClientException {
  64                 if (validateResponse) {
  65                         if (messageContext.getResponse() == null)
  66                                 return true;
  67
  68                         Source source = messageContext.getResponse().getPayloadSource();
  69                         try {
  70                                 return validate(source);
  71                         } catch (IOException e) {
  72                                 throw new WebServiceIOException("Cannot validate response", e);
  73                         }
  74                 } else {
  75                         return true;
  76                 }
  77         }
  78
  79         protected boolean validate(Source source) throws IOException {
  80                 SAXParseException[] exceptions = validator.validate(source);
  81                 if (exceptions.length != 0) {
  82                         for (SAXParseException ex : exceptions) {
  83                                 log.error(ex.getMessage());
  84                         }
  85                         return false;
  86                 } else {
  87                         return true;
  88                 }
  89         }
  90
  91         public void setValidateRequest(Boolean validateRequest) {
  92                 this.validateRequest = validateRequest;
  93         }
  94
  95         public void setValidateResponse(Boolean validateResponse) {
  96                 this.validateResponse = validateResponse;
  97         }
  98
  99         public void setValidator(XmlValidator validator) {
 100                 this.validator = validator;
 101         }
 102
 103 }