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1
22 package org.jboss.injection;
23
24 import java.lang.reflect.Field  ;
25 import java.lang.reflect.Method ;
26 import java.lang.reflect.AccessibleObject ;
27 import java.util.Map ;
28 import javax.management.ObjectName ;
29 import javax.management.MalformedObjectNameException ;
30
31 import org.jboss.annotation.ejb.Depends;
32 import org.jboss.logging.Logger;
33 import org.jboss.metamodel.descriptor.EnvironmentRefGroup;
34
35
39 public class DependsHandler implements InjectionHandler
40 {
41 private static final Logger log = Logger.getLogger(DependsHandler.class);
42
43 public void loadXml(EnvironmentRefGroup xml, InjectionContainer container)
44 {
45 }
46
47 public void handleMethodAnnotations(Method method, InjectionContainer container, Map <AccessibleObject , Injector> injectors)
48 {
49 Depends dep = container.getAnnotation(Depends.class, method.getDeclaringClass(), method);
50 if (dep != null)
51 {
52 if (!method.getName().startsWith("set"))
53 throw new RuntimeException ("@EJB can only be used with a set method: " + method);
54 String [] names = dep.value();
55 if (names.length != 1)
56 throw new RuntimeException ("@Depends on a field can only take one object name: " + method);
57 ObjectName on = null;
58 try
59 {
60 on = new ObjectName (names[0]);
61 }
62 catch (MalformedObjectNameException e)
63 {
64 throw new RuntimeException (e);
65 }
66 injectors.put(method, new DependsMethodInjector(method, on));
67 container.getDependencyPolicy().addDependency(names[0]);
68 }
69 }
70
71 public void handleFieldAnnotations(Field field, InjectionContainer container, Map <AccessibleObject , Injector> injectors)
72 {
73 Depends dep = container.getAnnotation(Depends.class, field.getDeclaringClass(), field);
74 if (dep != null)
75 {
76 String [] names = dep.value();
77 if (names.length != 1)
78 throw new RuntimeException ("@Depends on a field can only take one object name: " + field);
79 ObjectName on = null;
80 try
81 {
82 on = new ObjectName (names[0]);
83 }
84 catch (MalformedObjectNameException e)
85 {
86 throw new RuntimeException (e);
87 }
88 injectors.put(field, new DependsFieldInjector(field, on));
89 container.getDependencyPolicy().addDependency(names[0]);
90 }
91 }
92
93 public void handleClassAnnotations(Class clazz, InjectionContainer container)
94 {
95 Depends dep = (Depends)container.getAnnotation(Depends.class, clazz);
96 if (dep == null) return;
97 for (String dependency : dep.value())
98 {
99 container.getDependencyPolicy().addDependency(dependency);
100 }
101 }
102
103 }
104 |
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