adressevedligehold/tasks/TaskManager.java

package dk.daoas.adressevedligehold.tasks;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import dk.daoas.adressevedligehold.tasks.Task.TaskBean;
import dk.daoas.adressevedligehold.tasks.Task.TaskState;

public class TaskManager {
        
        public static final String TASKMANAGER = "TASKMANAGER";
        
        ExecutorService executor = Executors.newFixedThreadPool(1);
        
        private int nextId = 1;

        
        private ArrayList<Task> tasks = new ArrayList<Task>();
        private HashMap<Integer, Task> taskIdMap = new HashMap<Integer,Task>();

        private Task currentTask;
        
        public List<TaskBean> getTasks() {
                ArrayList<TaskBean> tmpList = new ArrayList<TaskBean>();
                
                synchronized(this) {
                        for (Task t : tasks) {
                                tmpList.add( t.getTaskBean() );
                        }                       
                }
                
                Collections.reverse(tmpList);
                
                return tmpList;
        }
        
        public void setCurrentTask(Task task) {
                this.currentTask = task;
        }
        
        public Task getCurrentTask() {
                return this.currentTask;
        }
        
        public Task getTaskById(int id) {
                return taskIdMap.get(id);
        }
        
        void shutDown() {
                if (currentTask != null) {
                        currentTask.doAbort();  
                }
                
                executor.shutdownNow();
        }
        
        public synchronized void removeTask(Task removeTask) {
                if (removeTask.state == TaskState.STATE_QUEUED) {
                        removeTask.doAbort();
                }
                
                if (removeTask.state == TaskState.STATE_ABORTED || removeTask.state == TaskState.STATE_DONE || removeTask.state == TaskState.STATE_QUEUED) {
                        taskIdMap.remove( removeTask.getId() );
                        tasks.remove(removeTask);
                        return;
                }
                
                
                throw new RuntimeException("Cant remove task in current state:" + removeTask.state);
                
        }
        
        public synchronized void submitTask(Task newTask) {
                int id = getNextTaskid();
                newTask.setId(id);
                
                newTask.setManager(this);
                
                taskIdMap.put(id, newTask);
                tasks.add(newTask);
                executor.submit(newTask);
        }
        
        private synchronized int getNextTaskid() {
                return nextId++;
        }
        

}
1	torben	2838	package dk.daoas.adressevedligehold.tasks;
2
3			import java.util.ArrayList;
4			import java.util.Collections;
5	torben	2903	import java.util.HashMap;
6	torben	2838	import java.util.List;
7			import java.util.concurrent.ExecutorService;
8			import java.util.concurrent.Executors;
9
10			import dk.daoas.adressevedligehold.tasks.Task.TaskBean;
11	torben	2918	import dk.daoas.adressevedligehold.tasks.Task.TaskState;
12	torben	2838
13			public class TaskManager {
14
15			public static final String TASKMANAGER = "TASKMANAGER";
16
17			ExecutorService executor = Executors.newFixedThreadPool(1);
18	torben	2903
19			private int nextId = 1;
20	torben	2838
21
22			private ArrayList<Task> tasks = new ArrayList<Task>();
23	torben	2903	private HashMap<Integer, Task> taskIdMap = new HashMap<Integer,Task>();
24	torben	2838
25			private Task currentTask;
26
27	torben	3030	public List<TaskBean> getTasks() {
28	torben	2838	ArrayList<TaskBean> tmpList = new ArrayList<TaskBean>();
29	torben	3030
30			synchronized(this) {
31			for (Task t : tasks) {
32			tmpList.add( t.getTaskBean() );
33			}
34	torben	2838	}
35
36			Collections.reverse(tmpList);
37
38			return tmpList;
39			}
40
41			public void setCurrentTask(Task task) {
42			this.currentTask = task;
43			}
44
45			public Task getCurrentTask() {
46			return this.currentTask;
47			}
48
49	torben	2903	public Task getTaskById(int id) {
50			return taskIdMap.get(id);
51			}
52
53	torben	2838	void shutDown() {
54			if (currentTask != null) {
55			currentTask.doAbort();
56			}
57
58			executor.shutdownNow();
59			}
60
61	torben	2918	public synchronized void removeTask(Task removeTask) {
62	torben	2928	if (removeTask.state == TaskState.STATE_QUEUED) {
63			removeTask.doAbort();
64			}
65
66			if (removeTask.state == TaskState.STATE_ABORTED \|\| removeTask.state == TaskState.STATE_DONE \|\| removeTask.state == TaskState.STATE_QUEUED) {
67	torben	2918	taskIdMap.remove( removeTask.getId() );
68			tasks.remove(removeTask);
69	torben	2928	return;
70	torben	2918	}
71	torben	2928
72
73			throw new RuntimeException("Cant remove task in current state:" + removeTask.state);
74
75	torben	2918	}
76
77	torben	2903	public synchronized void submitTask(Task newTask) {
78			int id = getNextTaskid();
79			newTask.setId(id);
80
81	torben	2838	newTask.setManager(this);
82
83	torben	2903	taskIdMap.put(id, newTask);
84	torben	2838	tasks.add(newTask);
85			executor.submit(newTask);
86			}
87
88	torben	2903	private synchronized int getNextTaskid() {
89			return nextId++;
90			}
91
92	torben	2838
93			}