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1
22 package org.jboss.deployers.plugins.attachments;
23
24 import java.io.Serializable  ;
25
26 import org.jboss.deployers.spi.attachments.Attachments;
27
28
34 public abstract class AbstractAttachments
35 implements Attachments, Serializable
36 {
37 private static final long serialVersionUID = 1;
38
39 public <T> T addAttachment(String name, T attachment, Class <T> expectedType)
40 {
41 if (expectedType == null)
42 throw new IllegalArgumentException ("Null expectedType");
43 Object result = addAttachment(name, attachment);
44 if (result == null)
45 return null;
46 return expectedType.cast(result);
47 }
48
49 public <T> T addAttachment(Class <T> type, T attachment)
50 {
51 if (type == null)
52 throw new IllegalArgumentException ("Null type");
53 return addAttachment(type.getName(), attachment, type);
54 }
55
56 public <T> T getAttachment(String name, Class <T> expectedType)
57 {
58 if (expectedType == null)
59 throw new IllegalArgumentException ("Null expectedType");
60 Object result = getAttachment(name);
61 if (result == null)
62 return null;
63 return expectedType.cast(result);
64 }
65
66 public <T> T getAttachment(Class <T> type)
67 {
68 if (type == null)
69 throw new IllegalArgumentException ("Null type");
70 return getAttachment(type.getName(), type);
71 }
72
73 public boolean isAttachmentPresent(String name, Class <?> expectedType)
74 {
75 if (expectedType == null)
76 throw new IllegalArgumentException ("Null expectedType");
77 Object result = getAttachment(name);
78 if (result == null)
79 return false;
80 try
81 {
82 expectedType.cast(result);
83 }
84 catch (ClassCastException e)
85 {
86 return false;
87 }
88 return true;
89 }
90
91 public boolean isAttachmentPresent(Class <?> type)
92 {
93 if (type == null)
94 throw new IllegalArgumentException ("Null type");
95 return isAttachmentPresent(type.getName(), type);
96 }
97
98 public <T> T removeAttachment(String name, Class <T> expectedType)
99 {
100 if (expectedType == null)
101 throw new IllegalArgumentException ("Null expectedType");
102 Object result = removeAttachment(name);
103 if (result == null)
104 return null;
105 return expectedType.cast(result);
106 }
107
108 public <T> T removeAttachment(Class <T> type)
109 {
110 if (type == null)
111 throw new IllegalArgumentException ("Null type");
112 return removeAttachment(type.getName(), type);
113 }
114
115 public void clear()
116 {
117 throw new UnsupportedOperationException ("You cannot clear attachments here.");
118 }
119 }
120 |
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