/*

  * Copyright 2011 The Kuali Foundation

  *

  * Licensed under the Educational Community 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.opensource.org/licenses/ecl1.php

  *

  * 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 org.kuali.rice.kew.api.document;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.CoreConstants;

 import org.kuali.rice.core.api.mo.AbstractDataTransferObject;

 import org.kuali.rice.core.api.mo.ModelBuilder;

 import org.kuali.rice.core.api.util.jaxb.MapStringStringAdapter;

 import org.kuali.rice.kew.api.KewApiConstants;

 import org.w3c.dom.Element;

 import javax.xml.bind.annotation.XmlAccessType;

 import javax.xml.bind.annotation.XmlAccessorType;

 import javax.xml.bind.annotation.XmlAnyElement;

 import javax.xml.bind.annotation.XmlElement;

 import javax.xml.bind.annotation.XmlRootElement;

 import javax.xml.bind.annotation.XmlType;

 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;

 import java.io.Serializable;

 import java.util.Collection;

 import java.util.Collections;

 import java.util.HashMap;

 import java.util.Map;

 /**

  * Defines an update to document content on a particular workflow document.

  * Contains general application content as well as a list of attribute

  * definitions and searchable definitions.  When passed to the appropriate

  * workflow services to perform an update on document content, if any of the

  * internal content or definitions on this object have not been set then they

  * will not be updated.  This allows for this data structure to be used to only

  * update the portion of the document content that is desired to be updated.

  * 

  * @author Kuali Rice Team (rice.collab@kuali.org)

  * 

  */

 @XmlRootElement(name = DocumentUpdate.Constants.ROOT_ELEMENT_NAME)

 @XmlAccessorType(XmlAccessType.NONE)

 @XmlType(name = DocumentUpdate.Constants.TYPE_NAME, propOrder = {

         DocumentUpdate.Elements.TITLE,

     DocumentUpdate.Elements.APPLICATION_DOCUMENT_ID,

     DocumentUpdate.Elements.APPLICATION_DOCUMENT_STATUS,

     DocumentUpdate.Elements.VARIABLES,

     CoreConstants.CommonElements.FUTURE_ELEMENTS

 })

 public final class DocumentUpdate extends AbstractDataTransferObject {

         private static final long serialVersionUID = 608839901744771499L;

         @XmlElement(name = Elements.TITLE, required = false)

         private final String title;

         @XmlElement(name = Elements.APPLICATION_DOCUMENT_ID, required = false)

         private final String applicationDocumentId;

         @XmlElement(name = Elements.APPLICATION_DOCUMENT_STATUS, required = false)

         private final String applicationDocumentStatus;

         @XmlElement(name = Elements.VARIABLES, required = false)

         @XmlJavaTypeAdapter(MapStringStringAdapter.class)

         private final Map<String, String> variables;

         @SuppressWarnings("unused")

     @XmlAnyElement

     private final Collection<Element> _futureElements = null;

         private DocumentUpdate() {

                 this.title = null;

                 this.applicationDocumentId = null;

                 this.applicationDocumentStatus = null;

                 this.variables = null;

         }

     private DocumentUpdate(Builder builder) {

             this.title = builder.getTitle();

             this.applicationDocumentId = builder.getApplicationDocumentId();

             this.applicationDocumentStatus = builder.getApplicationDocumentStatus();

             this.variables = builder.getVariables();

     }

         public String getTitle() {

                 return title;

         }

         public String getApplicationDocumentId() {

                 return applicationDocumentId;

         }

         public String getApplicationDocumentStatus() {

                 return applicationDocumentStatus;

         }

         public Map<String, String> getVariables() {

                 if (variables == null) {

                         return Collections.emptyMap();

                 }

                 return Collections.unmodifiableMap(variables);

         }

         /**

          * A builder which can be used to construct {@link DocumentUpdate} instances.

          */

         public final static class Builder implements Serializable, ModelBuilder {

                 private static final long serialVersionUID = 2220000561051177421L;

                 private String title;

                 private String applicationDocumentId;

                 private String applicationDocumentStatus;

                 private Map<String, String> variables;

                 private Builder() {

                         this.title = "";

                         this.variables = new HashMap<String, String>();

                 }

                 public static Builder create() {

                         return new Builder();

                 }

                 public static Builder create(Document document) {

                         if (document == null) {

                                 throw new IllegalArgumentException("document was null");

                         }

                         Builder builder = create();

                         builder.setTitle(document.getTitle());

                         builder.setApplicationDocumentId(document.getApplicationDocumentId());

                         builder.setApplicationDocumentStatus(document.getApplicationDocumentStatus());

                         builder.setVariables(document.getVariables());

                         return builder;

                 }

                 public DocumentUpdate build() {

                         return new DocumentUpdate(this);

                 }

                 public String getTitle() {

                         return title;

                 }

                 /**

                  * TODO: document the fact that this will auto-truncate the title...

                  */

                 public void setTitle(String title) {

                         if (title == null) {

                                 title = "";

                         }

                 if (title.length() > KewApiConstants.TITLE_MAX_LENGTH) {

                     title = title.substring(0, KewApiConstants.TITLE_MAX_LENGTH);

                 }

                         this.title = title;

                 }

                 public String getApplicationDocumentId() {

                         return applicationDocumentId;

                 }

                 public void setApplicationDocumentId(String applicationDocumentId) {

                         this.applicationDocumentId = applicationDocumentId;

                 }

                 public String getApplicationDocumentStatus() {

                         return applicationDocumentStatus;

                 }

                 public void setApplicationDocumentStatus(String applicationDocumentStatus) {

                         this.applicationDocumentStatus = applicationDocumentStatus;

                 }

                 public void setVariables(Map<String, String> variables) {

                         if (variables == null) {

                                 this.variables = new HashMap<String, String>();

                         } else {

                                 this.variables = new HashMap<String, String>(variables);

                         }

                 }

                 public Map<String, String> getVariables() {

                         return variables;

                 }

                 public String getVariableValue(String name) {

                         return variables.get(name);

             }

             public void setVariable(String name, String value) {

                 if (StringUtils.isBlank(name)) {

                         throw new IllegalArgumentException("name was null or blank");

                 }

                 variables.put(name, value);

             }

         }

     /**

      * Defines some internal constants used on this class.

      */

     static class Constants {

         final static String ROOT_ELEMENT_NAME = "documentUpdate";

         final static String TYPE_NAME = "DocumentUpdateType";

     }

     /**

      * A private class which exposes constants which define the XML element names to use when this object is marshalled to XML.

      */

     static class Elements {

             final static String TITLE = "title";

         final static String APPLICATION_DOCUMENT_ID = "applicationDocumentId";

         final static String APPLICATION_DOCUMENT_STATUS = "applicationDocumentStatus";

         final static String VARIABLES = "variables";

     }

 }