blob: d26f67dd0aa73747680e65427098fdda98f98f25 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*******************************************************************************
* Copyright (c) 2001, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jem.internal.proxy.remote;
/*
* $RCSfile: REMConstantBeanProxy.java,v $
* $Revision: 1.6 $ $Date: 2005/08/24 20:39:06 $
*/
import org.eclipse.jem.internal.proxy.common.remote.Commands;
import org.eclipse.jem.internal.proxy.core.IBeanProxy;
import org.eclipse.jem.internal.proxy.core.ProxyFactoryRegistry;
/**
* This is a base for bean proxies that are constants and
* do not have an object on the remote VM side. They are
* shipped back and forth by value.
*/
public abstract class REMConstantBeanProxy implements IREMConstantBeanProxy {
protected final REMProxyFactoryRegistry fFactory;
private final static Integer ID = new Integer(Commands.NOT_AN_ID);
protected REMConstantBeanProxy(REMProxyFactoryRegistry aFactory) {
fFactory = aFactory;
}
/**
* Return the registry this proxy was created with.
*/
public ProxyFactoryRegistry getProxyFactoryRegistry() {
return fFactory;
}
/**
* equals: Equal if:
* 1) This proxy == (identity) to the other object
* 2) Else if other is an IBeanProxy and not a constant one, then if
* equals on the server.
* 3) If this is a constant proxy and the other is too or is a constant
* value (e.g. IStringBeanProxy.equals(String), then true if values are equals.
* This is abstract because each type needs to do a unique test for equality.
*/
public abstract boolean equals(Object anObject);
/* (non-Javadoc)
* @see org.eclipse.jem.internal.proxy.core.IBeanProxy#sameAs(org.eclipse.jem.internal.proxy.core.IBeanProxy)
*/
public boolean sameAs(IBeanProxy aBeanProxy) {
// We can't be assured that there are not non-identical constants that are actually identical.
// This is because for constants we do not know the id of the original. That is not sent across from the vm.
return this == aBeanProxy;
}
/**
* Return the ID of this proxy.
* Constants have no id's, so we return -1.
*/
public Integer getID() {
return ID;
}
/**
* isValid. Constant ones are always valid unless the registry is terminated, except if an
* override releases resources. In that case the overriding
* subclass should also override isValid() to return false
* if release() was called.
*/
public boolean isValid() {
return fFactory.isValid();
}
/**
* release. Constant ones don't need to typically be released, however
* if an override does do something to release, then it MUST also
* override isValid() to return false.
*/
public void release() {
}
/* (non-Javadoc)
* @see org.eclipse.jem.internal.proxy.core.IProxy#isBeanProxy()
*/
public final boolean isBeanProxy() {
return true;
}
/* (non-Javadoc)
* @see org.eclipse.jem.internal.proxy.core.IProxy#isExpressionProxy()
*/
public final boolean isExpressionProxy() {
return false;
}
}
|
