Activiti querying the latest version of the process definition

 Packagecom.mycom.processDefinition;ImportJava.io.File;Importjava.io.IOException;ImportJava.io.InputStream;Importjava.util.ArrayList;ImportJava.util.LinkedHashMap;Importjava.util.List;ImportJava.util.Map;ImportJava.util.zip.ZipInputStream;ImportOrg.activiti.engine.ProcessEngine;ImportOrg.activiti.engine.ProcessEngines;Importorg.activiti.engine.repository.Deployment;Importorg.activiti.engine.repository.ProcessDefinition;Importorg.apache.commons.io.FileUtils;Importorg.junit.Test; Public classprocessdefinitiontest {processengine processengine=Processengines.getdefaultprocessengine (); /** Deployment process definition (from Classpath)*/@Test Public voidDeploymentprocessdefinition_classpath () {Deployment Deployment= Processengine.getrepositoryservice ()//Service related to process definition and deployment objects. Createdeployment ()//Create a Deployment object. Name ("Process definition")//Add a deployment name. Addclasspathresource ("DIAGRAMS/HELLOWORLD.BPMN")//Load from Classpath resources, only one file can be loaded at a time. Addclasspathresource ("Diagrams/helloworld.png"). deploy ();//Complete DeploymentSYSTEM.OUT.PRINTLN ("Deployment ID:" +Deployment.getid ()); System.out.println ("Deployment Name:" +deployment.getname ()); }        /** Deployment process definition (from Zip)*/@Test Public voidDeploymentprocessdefinition_zip () {InputStream in= This. GetClass (). getClassLoader (). getResourceAsStream ("Diagrams/helloworld.zip"); Zipinputstream Zipinputstream=NewZipinputstream (in); Deployment Deployment= Processengine.getrepositoryservice ()//Service related to process definition and deployment objects. Createdeployment ()//Create a Deployment object. Name ("Process definition")//Add a deployment name. Addzipinputstream (Zipinputstream)//complete the deployment of the zip file. deploy ();//Complete DeploymentSYSTEM.OUT.PRINTLN ("Deployment ID:" +Deployment.getid ()); System.out.println ("Deployment Name:" +deployment.getname ()); }        /** Query Process definition*/@Test Public voidfindprocessdefinition () {List<ProcessDefinition> list = Processengine.getrepositoryservice ()//Service related to process definition and deployment objects. Createprocessdefinitionquery ()//Create a Process definition query                        /*specify query criteria, where condition*/                        //. Deploymentid (Deploymentid)//querying using the Deployment Object ID//. Processdefinitionid (Processdefinitionid)//query using process definition ID//. Processdefinitionkey (Processdefinitionkey)//use process-defined key queries//. Processdefinitionnamelike (processdefinitionnamelike)//fuzzy Query using the name of the process definition                                                /*Sort*/. Orderbyprocessdefinitionversion (). ASC ()//Sorted by version in ascending order//. Orderbyprocessdefinitionname (). DESC ()//Sort by process-defined name in descending order. List ();//returns a collection list that encapsulates the process definition//. Singleresult ();//returns a unique result set//. Count ();//returns the number of result sets//. Listpage (Firstresult, MaxResults)//Paging Query                if(List! =NULL&& list.size () >0){             for(ProcessDefinition processdefinition:list) {System.out.println ("Process definition ID:" +processdefinition.getid ());//key+ version of the process definition + random build numberSYSTEM.OUT.PRINTLN ("Process definition name:" +processdefinition.getname ());//the value of the name attribute in the corresponding HELLOWORLD.BPMN fileSystem.out.println ("Key for process definition:" +processdefinition.getkey ());//the value of the id attribute in the corresponding HELLOWORLD.BPMN fileSystem.out.println ("version of the process definition:" +processdefinition.getversion ());//when the key value of the process definition is the same, the version is upgraded by default starting from 1System.out.println ("Resource Name BPMN file:" +processdefinition.getresourcename ()); System.out.println ("Resource name PNG file:" +processdefinition.getdiagramresourcename ()); System.out.println ("Deployment Object ID:" +Processdefinition.getdeploymentid ()); System.out.println ("################################"); }        }            }        /** Delete process definition*/@Test Public voiddeleteprocessdefinition () {//use the deployment ID to complete the removalString Deploymentid = "1"; /** Delete without cascade * Can only delete processes that do not start, and throws an exception if the process starts*///Processengine.getrepositoryservice ()//Service related to process definition and deployment objects//. Deletedeployment (Deploymentid);        /** The deletion of the energy level Union * can delete the initiating process, will delete all the information related to the current rule, the information being executed, also includes the historical information*/Processengine.getrepositoryservice ()//Service related to process definition and deployment objects. Deletedeployment (Deploymentid,true); System.out.println ("Delete Succeeded"); }        /** Query Flowchart*/@Test Public voidViewpic ()throwsioexception{/**Place the resulting picture under a folder*/String Deploymentid= "401"; //Get Picture Resource namelist<string> list = Processengine.getrepositoryservice ()//. Getdeploymentresourcenames (Deploymentid); //define the name of the picture resourceString resourcename = ""; if(list!=NULL&& list.size () >0){             for(String name:list) {if(Name.indexof (". png") >=0) {resourcename=name; }            }        }                        //get the input stream of a pictureInputStream in = Processengine.getrepositoryservice ()//. getResourceAsStream (Deploymentid, resourcename); //create a picture into the directory of D-diskFile File =NewFile ("d:/" +resourcename); //write the picture of the input stream to the D drivefileutils.copyinputstreamtofile (in, file); }        /** Query The latest version of the process definition*/@Test Public voidfindlastversionprocessdefinition () {List<ProcessDefinition> list =Processengine.getrepositoryservice (). Createprocessdefinitionquery (). O Rderbyprocessdefinitionversion (). ASC ()//use process-defined versions in ascending order. List (); /** map<string,processdefinition> * Map Collection key: process-defined key * Map set of value: process-Defined Object * Features : When the Map collection key value is the same, the next value will replace the previous value*/Map<String,ProcessDefinition> map =NewLinkedhashmap<string,processdefinition>(); if(List! =NULL&& list.size () >0){             for(ProcessDefinition pd:list) {map.put (Pd.getkey (), PD); }} List<ProcessDefinition> pdlist =NewArraylist<processdefinition>(Map.values ()); if(pdlist!=NULL&& pdlist.size () >0){             for(ProcessDefinition pd:pdlist) {System.out.println ("Process definition ID:" +pd.getid ());//key+ version of the process definition + random build numberSystem.out.println ("Name of the process definition:" +pd.getname ());//the value of the name attribute in the corresponding HELLOWORLD.BPMN fileSystem.out.println ("Key for process definition:" +pd.getkey ());//the value of the id attribute in the corresponding HELLOWORLD.BPMN fileSystem.out.println ("version of the process definition:" +pd.getversion ());//when the key value of the process definition is the same, the version is upgraded, the default 1System.out.println ("Resource Name BPMN file:" +pd.getresourcename ()); System.out.println ("Resource name PNG file:" +pd.getdiagramresourcename ()); System.out.println ("Deployment Object ID:" +Pd.getdeploymentid ()); System.out.println ("#########################################################"); }        }                }}

Activiti querying the latest version of the process definition