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1   /**
2    * Copyright 2005-2015 The Kuali Foundation
3    *
4    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
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.kuali.rice.krad.service.impl;
17  
18  import org.kuali.rice.krad.document.Document;
19  import org.kuali.rice.krad.service.DocumentSerializerService;
20  import org.kuali.rice.krad.service.XmlObjectSerializerService;
21  import org.kuali.rice.krad.util.documentserializer.AlwaysTruePropertySerializibilityEvaluator;
22  import org.kuali.rice.krad.util.documentserializer.PropertySerializabilityEvaluator;
23  import org.kuali.rice.krad.util.documentserializer.SerializationState;
24  
25  /**
26   * Default implementation of the {@link DocumentSerializerService}.  If no <workflowProperties> have been defined in the
27   * data dictionary for a document type (i.e. {@link Document#getDocumentPropertySerizabilityEvaluator()} returns an instance of 
28   * {@link AlwaysTruePropertySerializibilityEvaluator}), then this service will revert to using the {@link XmlObjectSerializerService}
29   * bean, which was the old way of serializing a document for routing.  If workflowProperties are defined, then this implementation
30   * will selectively serialize items.
31   */
32  public class DocumentSerializerServiceImpl extends SerializerServiceBase implements DocumentSerializerService {
33      
34      /**
35       * Serializes a document for routing
36       * 
37       * @see org.kuali.rice.krad.service.DocumentSerializerService#serializeDocumentToXmlForRouting(org.kuali.rice.krad.document.Document)
38       */
39      public String serializeDocumentToXmlForRouting(Document document) {
40          PropertySerializabilityEvaluator propertySerizabilityEvaluator = document.getDocumentPropertySerizabilityEvaluator();
41          evaluators.set(propertySerizabilityEvaluator);
42          SerializationState state = createNewDocumentSerializationState(document);
43          serializationStates.set(state);
44          
45          Object xmlWrapper = wrapDocumentWithMetadata(document);
46          String xml;
47          if (propertySerizabilityEvaluator instanceof AlwaysTruePropertySerializibilityEvaluator) {
48              xml = getXmlObjectSerializerService().toXml(xmlWrapper);
49          }
50          else {
51              xml = xstream.toXML(xmlWrapper);
52          }
53          
54          evaluators.set(null);
55          serializationStates.set(null);
56          return xml;
57      }
58  
59      /**
60       * Wraps the document before it is routed.  This implementation defers to {@link Document#wrapDocumentWithMetadataForXmlSerialization()}.
61       * 
62       * @param document
63       * @return may return the document, or may return another object that wraps around the document to provide additional metadata
64       */
65      protected Object wrapDocumentWithMetadata(Document document) {
66          return document.wrapDocumentWithMetadataForXmlSerialization();
67      }
68  
69      @Override
70      protected PropertySerializabilityEvaluator getPropertySerizabilityEvaluator(Object dataObject) {
71          return null;
72      }
73  }