Code Coverage for tapestry release 4.0.3

Clover coverage report - Code Coverage for tapestry release 4.0.3

Coverage timestamp: Fri May 5 2006 21:17:42 CDT

FRAMES NO FRAMES

file stats:	LOC:	110		Methods:	3
	NCLOC:	59		Classes:	1

Source file

Conditionals

Statements

Methods

TOTAL

InjectStateWorker.java

100%

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1		// Copyright 2005 The Apache Software Foundation
2		//
3		// Licensed under the Apache License, Version 2.0 (the "License");
4		// you may not use this file except in compliance with the License.
5		// You may obtain a copy of the License at
6		//
7		// http://www.apache.org/licenses/LICENSE-2.0
8		//
9		// Unless required by applicable law or agreed to in writing, software
10		// distributed under the License is distributed on an "AS IS" BASIS,
11		// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12		// See the License for the specific language governing permissions and
13		// limitations under the License.
14
15		package org.apache.tapestry.enhance;
16
17		import java.lang.reflect.Modifier;
18
19		import org.apache.hivemind.Location;
20		import org.apache.hivemind.service.BodyBuilder;
21		import org.apache.hivemind.service.ClassFabUtils;
22		import org.apache.hivemind.service.MethodSignature;
23		import org.apache.hivemind.util.Defense;
24		import org.apache.tapestry.engine.state.ApplicationStateManager;
25		import org.apache.tapestry.event.PageDetachListener;
26		import org.apache.tapestry.spec.InjectSpecification;
27
28		/**
29		* Worker for injecting application state objects as properties of the component. These properties
30		* are read/write and must be "live" (changes are propogated back into the
31		* {@link org.apache.tapestry.engine.state.ApplicationStateManager}). They should also cache in a
32		* local variable for efficiency, and clear out that variable at the end of the request.
33		*
34		* @author Howard M. Lewis Ship
35		* @since 4.0
36		*/
37		public class InjectStateWorker implements InjectEnhancementWorker
38		{
39		private ApplicationStateManager _applicationStateManager;
40
41	3	public void performEnhancement(EnhancementOperation op, InjectSpecification spec)
42		{
43	3	injectState(op, spec.getObject(), spec.getProperty(), spec.getLocation());
44		}
45
46	3	void injectState(EnhancementOperation op, String objectName, String propertyName,
47		Location location)
48		{
49	3	Defense.notNull(op, "op");
50	3	Defense.notNull(objectName, "objectName");
51	3	Defense.notNull(propertyName, "propertyName");
52
53	3	Class propertyType = EnhanceUtils.extractPropertyType(op, propertyName, null);
54	3	String fieldName = "_$" + propertyName;
55
56		// State properties are read/write
57
58	3	op.claimProperty(propertyName);
59
60	3	op.addField(fieldName, propertyType);
61
62	3	String managerField = op.addInjectedField(
63		"_$applicationStateManager",
64		ApplicationStateManager.class,
65		_applicationStateManager);
66
67	3	BodyBuilder builder = new BodyBuilder();
68
69		// Accessor
70
71	3	builder.begin();
72	3	builder.addln("if ({0} == null)", fieldName);
73	3	builder.addln(" {0} = ({1}) {2}.get(\"{3}\");", new Object[]
74		{ fieldName, ClassFabUtils.getJavaClassName(propertyType), managerField, objectName });
75	3	builder.addln("return {0};", fieldName);
76	3	builder.end();
77
78	3	String methodName = op.getAccessorMethodName(propertyName);
79
80	3	MethodSignature sig = new MethodSignature(propertyType, methodName, null, null);
81
82	3	op.addMethod(Modifier.PUBLIC, sig, builder.toString(), location);
83
84		// Mutator
85
86	3	builder.clear();
87	3	builder.begin();
88	3	builder.addln("{0}.store(\"{1}\", $1);", managerField, objectName);
89	3	builder.addln("{0} = $1;", fieldName);
90	3	builder.end();
91
92	3	sig = new MethodSignature(void.class, EnhanceUtils.createMutatorMethodName(propertyName),
93		new Class[]
94		{ propertyType }, null);
95
96	3	op.addMethod(Modifier.PUBLIC, sig, builder.toString(), location);
97
98		// Extend pageDetached() to clean out the cached field value.
99
100	3	op.extendMethodImplementation(
101		PageDetachListener.class,
102		EnhanceUtils.PAGE_DETACHED_SIGNATURE,
103		fieldName + " = null;");
104		}
105
106	3	public void setApplicationStateManager(ApplicationStateManager applicationStateManager)
107		{
108	3	_applicationStateManager = applicationStateManager;
109		}
110		}