/**

  * Copyright 2005-2011 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/ecl2.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.attribute;

 import org.apache.commons.lang.StringUtils;

 import org.apache.log4j.Logger;

 import org.kuali.rice.core.api.config.ConfigurationException;

 import org.kuali.rice.core.api.uif.RemotableAttributeField;

 import org.kuali.rice.core.api.uif.RemotableQuickFinder;

 import org.kuali.rice.kns.lookup.LookupUtils;

 import org.kuali.rice.kns.web.ui.Field;

 import org.kuali.rice.krad.service.KRADServiceLocatorWeb;

 import org.w3c.dom.NamedNodeMap;

 import org.w3c.dom.Node;

 import java.util.HashMap;

 import java.util.Map;

 /**

  * This class provides some common shared utility methods shared by the XML-based

  * attribute implementations. 

  * 

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

  *

  */

 public final class XMLAttributeUtils {

     private static final Logger LOG = Logger.getLogger(XMLAttributeUtils.class);

         private XMLAttributeUtils() {

                 throw new UnsupportedOperationException("do not call");

         }

         public static void establishFieldLookup(Field field, Node lookupNode) {

                 NamedNodeMap quickfinderAttributes = lookupNode.getAttributes();

                 String businessObjectClass = quickfinderAttributes.getNamedItem("businessObjectClass").getNodeValue();

                 field.setQuickFinderClassNameImpl(businessObjectClass);

                 for (int lcIndex = 0; lcIndex < lookupNode.getChildNodes().getLength(); lcIndex++) {

                         Map<String, String> fieldConversionsMap = new HashMap<String, String>();

                         Node fieldConversionsChildNode = lookupNode.getChildNodes().item(lcIndex);

                         if ("fieldConversions".equals(fieldConversionsChildNode)) {

                                 for (int fcIndex = 0; fcIndex < fieldConversionsChildNode.getChildNodes().getLength(); fcIndex++) {

                                         Node fieldConversionChildNode = fieldConversionsChildNode.getChildNodes().item(fcIndex);

                                         if ("fieldConversion".equals(fieldConversionChildNode)) {

                                                 NamedNodeMap fieldConversionAttributes = fieldConversionChildNode.getAttributes();

                                                 String lookupFieldName = fieldConversionAttributes.getNamedItem("lookupFieldName").getNodeValue();

                                                 String localFieldName = fieldConversionAttributes.getNamedItem("localFieldName").getNodeValue();

                                                 fieldConversionsMap.put(lookupFieldName, localFieldName);

                                         }

                                 }

                         }

                         field.setFieldConversions(fieldConversionsMap);

                 }

         }

     public static void establishFieldLookup(RemotableAttributeField.Builder fieldBuilder, Node lookupNode) {

                 NamedNodeMap quickfinderAttributes = lookupNode.getAttributes();

         Node dataObjectNode = quickfinderAttributes.getNamedItem("dataObjectClass");

         if (dataObjectNode == null) {

             // for legacy compatibility, though businessObjectClass is deprecated

             dataObjectNode = quickfinderAttributes.getNamedItem("businessObjectClass");

             if (dataObjectNode != null) {

                 LOG.warn("Field is using deprecated 'businessObjectClass' instead of 'dataObjectClass' for lookup definition, field name is: " + fieldBuilder.getName());

             } else {

                 throw new ConfigurationException("Failed to locate 'dataObjectClass' for lookup definition.");

             }

         }

         String dataObjectClass = dataObjectNode.getNodeValue();

         String baseLookupUrl = LookupUtils.getBaseLookupUrl(false);

         RemotableQuickFinder.Builder quickFinderBuilder = RemotableQuickFinder.Builder.create(baseLookupUrl, dataObjectClass);

                 for (int lcIndex = 0; lcIndex < lookupNode.getChildNodes().getLength(); lcIndex++) {

                         Map<String, String> fieldConversionsMap = new HashMap<String, String>();

                         Node fieldConversionsChildNode = lookupNode.getChildNodes().item(lcIndex);

                         if ("fieldConversions".equals(fieldConversionsChildNode)) {

                                 for (int fcIndex = 0; fcIndex < fieldConversionsChildNode.getChildNodes().getLength(); fcIndex++) {

                                         Node fieldConversionChildNode = fieldConversionsChildNode.getChildNodes().item(fcIndex);

                                         if ("fieldConversion".equals(fieldConversionChildNode)) {

                                                 NamedNodeMap fieldConversionAttributes = fieldConversionChildNode.getAttributes();

                                                 String lookupFieldName = fieldConversionAttributes.getNamedItem("lookupFieldName").getNodeValue();

                                                 String localFieldName = fieldConversionAttributes.getNamedItem("localFieldName").getNodeValue();

                                                 fieldConversionsMap.put(lookupFieldName, localFieldName);

                                         }

                                 }

                         }

             quickFinderBuilder.setFieldConversions(fieldConversionsMap);

                         fieldBuilder.getWidgets().add(quickFinderBuilder);

                 }

         }

 }