Coverage Report

Coverage Report - org.trails.engine.state.RequestScopeManager

Classes in this File

Line Coverage

Branch Coverage

Complexity

RequestScopeManager

79%

100%

1.636

 package org.trails.engine.state;
 
 import org.apache.tapestry.engine.state.StateObjectFactory;
 import org.apache.tapestry.engine.state.StateObjectPersistenceManager;
 import org.apache.tapestry.services.DataSqueezer;
 import org.apache.tapestry.web.WebRequest;
 import org.trails.record.IClientAsoPropertyPersistenceStrategy;
 
 
 /**
  * Manager for the 'request' scope; state objects are stored as HttpRequest
  * attributes. It allows to ASOs to be persisted in the client.
  * 
  */
 public class RequestScopeManager implements StateObjectPersistenceManager
 {
 
         private WebRequest request;
         private DataSqueezer dataSqueezer;
         private IClientAsoPropertyPersistenceStrategy clientAsoPropertyPersistenceStrategy;
         public boolean stateful = true;
 
         private static final String PREFIX = "aso:";
 
         private String buildKey(String objectName)
         {
                 return PREFIX + objectName;
         }
 
         public boolean exists(String objectName)
         {
                 String key = buildKey(objectName);
                 return request.getAttribute(key) != null || request.getParameterValue(key) != null;
         }
 
         public Object get(String objectName, StateObjectFactory factory)
         {
                 String key = buildKey(objectName);
 
                 if (request.getAttribute(key) != null)
                 {
                         return request.getAttribute(key);
                 }
 
                 Object result = unsqueeze(key);
 
                 if (result == null)
                 {
                         result = factory.createStateObject();
                         storeWithKey(key, result);
                 }
 
                 return result;
         }
 
         private synchronized Object unsqueeze(String key)
         {
                 if (request.getAttribute(key) != null)
                 {
                         return request.getAttribute(key);
                 }
 
                 if (request.getParameterValue(key) != null)
                 {
                         storeWithKey(key, dataSqueezer.unsqueeze(request.getParameterValue(key)));
                 }
 
                 return request.getAttribute(key);
         }
 
         public void store(String objectName, Object stateObject)
         {
                 String key = buildKey(objectName);
                 storeWithKey(key, stateObject);
         }
 
         private void storeWithKey(String key, Object stateObject)
         {
                 request.setAttribute(key, stateObject);
                 if (isStateful())
                 {
                         clientAsoPropertyPersistenceStrategy.addPropertyName(key);
                 }
         }
 
         public boolean isStateful()
         {
                 return stateful && clientAsoPropertyPersistenceStrategy != null;
         }
 
         public void setRequest(WebRequest request)
         {
                 this.request = request;
         }
 
         public void setDataSqueezer(DataSqueezer dataSqueezer)
         {
                 this.dataSqueezer = dataSqueezer;
         }
 
         public void setClientAsoPropertyPersistenceStrategy(IClientAsoPropertyPersistenceStrategy clientAsoPropertyPersistenceStrategy)
         {
                 this.clientAsoPropertyPersistenceStrategy = clientAsoPropertyPersistenceStrategy;
         }
 
         public void setStateful(boolean stateful)
         {
                 this.stateful = stateful;
         }
 }

1		package org.trails.engine.state;
2
3		import org.apache.tapestry.engine.state.StateObjectFactory;
4		import org.apache.tapestry.engine.state.StateObjectPersistenceManager;
5		import org.apache.tapestry.services.DataSqueezer;
6		import org.apache.tapestry.web.WebRequest;
7		import org.trails.record.IClientAsoPropertyPersistenceStrategy;
8
9
10		/**
11		* Manager for the 'request' scope; state objects are stored as HttpRequest
12		* attributes. It allows to ASOs to be persisted in the client.
13		*
14		*/
15	40	public class RequestScopeManager implements StateObjectPersistenceManager
16		{
17
18		private WebRequest request;
19		private DataSqueezer dataSqueezer;
20		private IClientAsoPropertyPersistenceStrategy clientAsoPropertyPersistenceStrategy;
21	20	public boolean stateful = true;
22
23		private static final String PREFIX = "aso:";
24
25		private String buildKey(String objectName)
26		{
27	20	return PREFIX + objectName;
28		}
29
30		public boolean exists(String objectName)
31		{
32	8	String key = buildKey(objectName);
33	8	return request.getAttribute(key) != null \|\| request.getParameterValue(key) != null;
34		}
35
36		public Object get(String objectName, StateObjectFactory factory)
37		{
38	8	String key = buildKey(objectName);
39
40	8	if (request.getAttribute(key) != null)
41		{
42	4	return request.getAttribute(key);
43		}
44
45	4	Object result = unsqueeze(key);
46
47	4	if (result == null)
48		{
49	4	result = factory.createStateObject();
50	4	storeWithKey(key, result);
51		}
52
53	4	return result;
54		}
55
56		private synchronized Object unsqueeze(String key)
57		{
58	4	if (request.getAttribute(key) != null)
59		{
60	0	return request.getAttribute(key);
61		}
62
63	4	if (request.getParameterValue(key) != null)
64		{
65	0	storeWithKey(key, dataSqueezer.unsqueeze(request.getParameterValue(key)));
66		}
67
68	4	return request.getAttribute(key);
69		}
70
71		public void store(String objectName, Object stateObject)
72		{
73	4	String key = buildKey(objectName);
74	4	storeWithKey(key, stateObject);
75	4	}
76
77		private void storeWithKey(String key, Object stateObject)
78		{
79	8	request.setAttribute(key, stateObject);
80	8	if (isStateful())
81		{
82	0	clientAsoPropertyPersistenceStrategy.addPropertyName(key);
83		}
84	8	}
85
86		public boolean isStateful()
87		{
88	8	return stateful && clientAsoPropertyPersistenceStrategy != null;
89		}
90
91		public void setRequest(WebRequest request)
92		{
93	20	this.request = request;
94	20	}
95
96		public void setDataSqueezer(DataSqueezer dataSqueezer)
97		{
98	0	this.dataSqueezer = dataSqueezer;
99	0	}
100
101		public void setClientAsoPropertyPersistenceStrategy(IClientAsoPropertyPersistenceStrategy clientAsoPropertyPersistenceStrategy)
102		{
103	0	this.clientAsoPropertyPersistenceStrategy = clientAsoPropertyPersistenceStrategy;
104	0	}
105
106		public void setStateful(boolean stateful)
107		{
108	4	this.stateful = stateful;
109	4	}
110		}