Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache 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.apache.org/licenses/LICENSE-2.0 * * 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.apache.hise.runtime; import java.util.Date; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import javax.xml.bind.JAXBElement; import javax.xml.namespace.QName; import net.sf.saxon.value.DurationValue; import org.apache.commons.lang.NotImplementedException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hise.dao.GenericHumanRole; import org.apache.hise.dao.TaskOrgEntity; import org.apache.hise.dao.TaskOrgEntity.OrgEntityType; import org.apache.hise.lang.xsd.htd.TDeadline; import org.apache.hise.lang.xsd.htd.TDeadlines; import org.apache.hise.lang.xsd.htd.TEscalation; import org.apache.hise.lang.xsd.htd.TExpression; import org.apache.hise.lang.xsd.htd.TFrom; import org.apache.hise.lang.xsd.htd.TGenericHumanRole; import org.apache.hise.lang.xsd.htd.TPeopleAssignments; import org.apache.hise.lang.xsd.htd.TPresentationParameter; import org.apache.hise.lang.xsd.htd.TToPart; import org.apache.hise.lang.xsd.htd.TToParts; import org.apache.hise.utils.DOMUtils; import org.apache.hise.utils.XQueryEvaluator; import org.apache.hise.utils.XmlUtils; import org.w3c.dom.DOMImplementation; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.bootstrap.DOMImplementationRegistry; public class TaskEvaluator { private Log __log = LogFactory.getLog(TaskEvaluator.class); private Task task; public TaskEvaluator(Task task) { this.task = task; } public static class HtdFunctions { public static Node getInput(String part) { TaskEvaluator te = (TaskEvaluator) XQueryEvaluator.contextObjectTL.get(); try { if (te.task.getTaskDto().getInput().get(part) != null) { return DOMUtils.parse(te.task.getTaskDto().getInput().get(part).getMessage()) .getDocumentElement(); } else { return null; } } catch (Exception e) { throw new RuntimeException("", e); } } } public XQueryEvaluator buildQueryEvaluator() { XQueryEvaluator evaluator = new XQueryEvaluator(); evaluator.setContextObject(this); evaluator.declareNamespace("htd", "http://www.example.org/WS-HT"); evaluator.declareJavaClass("http://www.example.org/WS-HT", HtdFunctions.class); evaluator.bindVariable(QName.valueOf("taskId"), task.getTaskDto().getId()); evaluator.bindVariable(QName.valueOf("currentEventDateTime"), task.getCurrentEventDateTime()); return evaluator; } public Integer evaluatePriority() { return Integer.parseInt("" + evaluateExpression(task.getTaskDefinition().getPriority())); } private List evaluateExpression(TExpression expr) { return buildQueryEvaluator().evaluateExpression(XmlUtils.getStringContent(expr.getContent()), null); } public Date evaluateDeadline(TDeadline deadline) { return (Date) buildQueryEvaluator().evaluateExpression("$currentEventDateTime + xs:dayTimeDuration(" + XmlUtils.getStringContent(deadline.getFor().getContent()) + ")", null).get(0); } public Set<TaskOrgEntity> evaluatePeopleAssignments() { Set<TaskOrgEntity> result = new HashSet<TaskOrgEntity>(); TPeopleAssignments p = task.getTaskDefinition().getPeopleAssignments(); for (JAXBElement<TGenericHumanRole> r : p.getGenericHumanRole()) { GenericHumanRole assignmentRole = GenericHumanRole.valueOf(r.getName().getLocalPart().toUpperCase()); Set<TaskOrgEntity> result2 = evaluateGenericHumanRole(r.getValue(), assignmentRole); result.addAll(result2); } if (__log.isDebugEnabled()) { __log.debug("evaluated people assignments " + task.getTaskDefinition().getTaskName() + " " + result); } return result; } public Set<TaskOrgEntity> evaluateGenericHumanRole(TGenericHumanRole role, GenericHumanRole assignmentRole) { Set<TaskOrgEntity> result = new HashSet<TaskOrgEntity>(); TFrom f = role.getFrom(); if (f.getLogicalPeopleGroup() != null) { throw new NotImplementedException(); } else { Element e = DOMUtils.findElement(QName.valueOf("{http://www.example.org/WS-HT}literal"), f.getContent()); if (e != null) { for (String user : (List<String>) buildQueryEvaluator().evaluateExpression( "declare namespace htd='http://www.example.org/WS-HT'; for $i in htd:literal/htd:organizationalEntity/htd:users/htd:user return string($i)", e)) { TaskOrgEntity x = new TaskOrgEntity(); x.setGenericHumanRole(assignmentRole); x.setName(user); x.setType(OrgEntityType.USER); x.setTask(task.getTaskDto()); result.add(x); } for (String group : (List<String>) buildQueryEvaluator().evaluateExpression( "declare namespace htd='http://www.example.org/WS-HT'; for $i in htd:literal/htd:organizationalEntity/htd:groups/htd:group return string($i)", e)) { TaskOrgEntity x = new TaskOrgEntity(); x.setGenericHumanRole(assignmentRole); x.setName(group); x.setType(OrgEntityType.GROUP); x.setTask(task.getTaskDto()); result.add(x); } } } return result; } public Node createEprFromHeader(Node header) { return (Node) buildQueryEvaluator().evaluateExpression( "<wsa:EndpointReference xmlns:wsa=\"http://www.w3.org/2005/08/addressing\">{ */wsa:ReplyTo/* }</wsa:EndpointReference>", header).get(0); } // private Set<TaskOrgEntity> evaluatePeopleGroup(String groupName) { // HashSet<TaskOrgEntity> s = new HashSet<TaskOrgEntity>(); // TaskOrgEntity o = new TaskOrgEntity(); // o.setName("user1"); // o.setType(OrgEntityType.USER); // s.add(o); // return s; // } public Node evaluateOutcome(boolean outcome) { XQueryEvaluator evaluator = buildQueryEvaluator(); evaluator.bindVariable(QName.valueOf("outcome"), outcome); return (Node) evaluator.evaluateExpression(task.getTaskDefinition().getOutcomeExpression(), null).get(0); } public Node evaluateApproveResponseHeader() { XQueryEvaluator evaluator = buildQueryEvaluator(); return (Node) evaluator.evaluateExpression( "<htd:taskId xmlns:htd=\"http://www.example.org/WS-HT\">{$taskId}</htd:taskId>", null).get(0); } public static String getEscalationKey(TEscalation e, boolean isCompletion) { return e.getName() + ";" + (isCompletion ? "COMPLETION" : "START"); } public static class EscalationResult { public final TEscalation escalation; public final boolean isCompletion; public EscalationResult(TEscalation escalation, boolean isCompletion) { super(); this.escalation = escalation; this.isCompletion = isCompletion; } } public EscalationResult findEscalation(String name) { EscalationResult r = null; TDeadlines d = task.getTaskDefinition().getDeadlines(); for (TDeadline u : d.getStartDeadline()) { for (TEscalation e : u.getEscalation()) { if (getEscalationKey(e, false).equals(name)) { return new EscalationResult(e, false); } } } for (TDeadline u : d.getCompletionDeadline()) { for (TEscalation e : u.getEscalation()) { if (getEscalationKey(e, true).equals(name)) { return new EscalationResult(e, true); } } } return null; } public Map<String, Node> evaluateToParts(TToParts toParts) { Map<String, Node> result = new HashMap<String, Node>(); if (toParts != null) { XQueryEvaluator e = buildQueryEvaluator(); for (TToPart toPart : toParts.getToPart()) { result.put(toPart.getName(), (Node) e.evaluateExpression(XmlUtils.getStringContent(toPart.getContent()), null).get(0)); } } return result; } public static Node defaultHeader() { return DOMUtils.parse( "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<soapenv:Header xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\"/>") .getDocumentElement(); } public String getPresentationName() { try { return XmlUtils.getStringContent( task.getTaskDefinition().getPresentationElements().getName().get(0).getContent()); } catch (Throwable t) { return null; } } public XQueryEvaluator buildPresentationEvaluator() { XQueryEvaluator evaluator = buildQueryEvaluator(); for (TPresentationParameter p : task.getTaskDefinition().getPresentationParameters()) { XQueryEvaluator evaluator2 = buildQueryEvaluator(); List eavaluationResult = evaluator2.evaluateExpression(XmlUtils.getStringContent(p.getContent()), null); Object v = null; if (!eavaluationResult.isEmpty()) { v = eavaluationResult.get(0); } else { v = "ERROR"; __log.warn("Could not evaluate presentationParameter: " + p.getName()); } __log.debug("evaluated presentationParameter: " + p.getName() + " = " + v); evaluator.bindVariable(QName.valueOf(p.getName()), v); } return evaluator; } public static String getTemplateExpr(List<Object> expr) { return "xs:string(<v>" + XmlUtils.getStringContent(expr) + "</v>)"; } public String evalPresentationSubject() { String subjectExpr; try { subjectExpr = getTemplateExpr( task.getTaskDefinition().getPresentationElements().getSubject().get(0).getContent()); } catch (Throwable t) { return null; } XQueryEvaluator e = buildPresentationEvaluator(); return "" + e.evaluateExpression(subjectExpr, null).get(0); } public String evalPresentationDescription() { String descExpr; try { descExpr = getTemplateExpr( task.getTaskDefinition().getPresentationElements().getDescription().get(0).getContent()); } catch (Throwable t) { return null; } XQueryEvaluator e = buildPresentationEvaluator(); return "" + e.evaluateExpression(descExpr, null).get(0); } }