001 /*
002 * Copyright 2007-2008 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package edu.sampleu.travel.workflow;
017
018 import edu.sampleu.travel.bo.TravelAccount;
019 import org.kuali.rice.kew.engine.RouteContext;
020 import org.kuali.rice.kew.identity.Id;
021 import org.kuali.rice.kew.routeheader.DocumentContent;
022 import org.kuali.rice.kew.rule.AbstractRoleAttribute;
023 import org.kuali.rice.kew.rule.ResolvedQualifiedRole;
024 import org.kuali.rice.kew.rule.Role;
025 import org.kuali.rice.kew.identity.PrincipalName;
026 import org.kuali.rice.krad.service.KRADServiceLocator;
027 import org.kuali.rice.krad.workflow.WorkflowUtils;
028 import org.w3c.dom.Node;
029 import org.w3c.dom.NodeList;
030
031 import javax.xml.namespace.QName;
032 import javax.xml.xpath.XPath;
033 import javax.xml.xpath.XPathConstants;
034 import javax.xml.xpath.XPathExpressionException;
035 import java.util.ArrayList;
036 import java.util.Collections;
037 import java.util.List;
038
039 /**
040 * Resolves FO's using the accounts associated with the document XPath xpath =
041 * KualiWorkflowUtils.getXPath(documentContent.getDocument()); List<String> qualifiers = new ArrayList<String>(); NodeList
042 * accountNums = (NodeList)xstreamSafeEval(xpath, "//edu.sampleu.travel.workflow.bo.TravelAccount/number",
043 * documentContent.getDocument(), XPathConstants.NODESET); for (int i = 0; i < accountNums.getLength(); i++) { Node accountNum =
044 * accountNums.item(i); String accuntNumVal = accountNum.getNodeValue(); }
045 */
046 public class AccountAttribute extends AbstractRoleAttribute {
047 private static final Role FISCAL_OFFICER_ROLE = new Role(AccountAttribute.class, "FO", "Fiscal Officer");
048 private static final List<Role> ROLES;
049 static {
050 List<Role> tmp = new ArrayList<Role>(1);
051 tmp.add(FISCAL_OFFICER_ROLE);
052 ROLES = Collections.unmodifiableList(tmp);
053 }
054
055
056 public List<String> getQualifiedRoleNames(String roleName, DocumentContent documentContent) {
057 List<String> qualifiedRoleNames = new ArrayList<String>();
058 XPath xpath = WorkflowUtils.getXPath(documentContent.getDocument());
059 // This xpath stream needs updating when the TravelAccount is being updated
060 NodeList accountNums = (NodeList) xstreamSafeEval(xpath, "/documentContent/applicationContent/org.kuali.rice.krad.workflow.KualiDocumentXmlMaterializer/document/travelAccounts/vector/default/elementData/edu.sampleu.travel.bo.TravelAccount/number", documentContent.getDocument(), XPathConstants.NODESET);
061 for (int i = 0; i < accountNums.getLength(); i++) {
062 Node accountNum = accountNums.item(i);
063 String accuntNumVal = accountNum.getTextContent();
064 qualifiedRoleNames.add(accuntNumVal);
065 }
066 return qualifiedRoleNames;
067 }
068
069
070 public List<Role> getRoleNames() {
071 return ROLES;
072 }
073
074
075 public ResolvedQualifiedRole resolveQualifiedRole(RouteContext routeContext, String roleName, String qualifiedRole) {
076 String accountNum = qualifiedRole;
077 TravelAccount account = new TravelAccount();
078 account.setNumber(accountNum);
079 account = (TravelAccount) KRADServiceLocator.getBusinessObjectService().retrieve(account);
080 if (account == null) {
081 throw new RuntimeException("Account " + accountNum + " does not exist!");
082 }
083 ResolvedQualifiedRole qualRole = new ResolvedQualifiedRole();
084 qualRole.setAnnotation("Account " + accountNum + " FO");
085 qualRole.setQualifiedRoleLabel("Fiscal Officer Account " + accountNum);
086 List<Id> ids = new ArrayList<Id>();
087 ids.add(new PrincipalName(account.getFiscalOfficer().getUserName()));
088 qualRole.setRecipients(ids);
089 return qualRole;
090 }
091
092
093 /**
094 * This method will do a simple XPath.evaluate, while wrapping your xpathExpression with the xstreamSafe function. It assumes a
095 * String result, and will return such. If an XPathExpressionException is thrown, this will be re-thrown within a
096 * RuntimeException.
097 *
098 * @param xpath A correctly initialized XPath instance.
099 * @param xpathExpression Your XPath Expression that needs to be wrapped in an xstreamSafe wrapper and run.
100 * @param item The document contents you will be searching within.
101 * @return The string value of the xpath.evaluate().
102 */
103 public static final Object xstreamSafeEval(XPath xpath, String xpathExpression, Object item, QName returnType) {
104 String xstreamSafeXPath = new StringBuilder(WorkflowUtils.XSTREAM_SAFE_PREFIX).append(xpathExpression).append(WorkflowUtils.XSTREAM_SAFE_SUFFIX).toString();
105 try {
106 return xpath.evaluate(xstreamSafeXPath, item, returnType);
107 }
108 catch (XPathExpressionException e) {
109 throw new RuntimeException("XPathExpressionException occurred on xpath: " + xstreamSafeXPath, e);
110 }
111 }
112 }