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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* Copyright (c) 2011, 2012 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
* Victor Roldan Betancort - maintenance
*/
package org.eclipse.emf.internal.cdo.view;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.eresource.CDOResourceFolder;
import org.eclipse.emf.cdo.eresource.CDOResourceNode;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.util.CDOURIUtil;
import org.eclipse.emf.cdo.view.CDOViewProvider;
import org.eclipse.emf.cdo.view.CDOViewProvider.CDOViewProvider2;
import org.eclipse.emf.cdo.view.CDOViewProviderRegistry;
import org.eclipse.net4j.util.io.IOUtil;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.ContentHandler;
import org.eclipse.emf.ecore.resource.URIConverter;
import org.eclipse.emf.ecore.resource.URIHandler;
import org.eclipse.emf.spi.cdo.InternalCDOView;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* @author Eike Stepper
* @since 2.0
*/
public class CDOURIHandler implements URIHandler
{
private static final String CDO_URI_SCHEME = "cdo"; //$NON-NLS-1$
private InternalCDOView view;
public CDOURIHandler(InternalCDOView view)
{
this.view = view;
}
public InternalCDOView getView()
{
return view;
}
public boolean canHandle(URI uri)
{
int xxx;
// if (CDO_URI_SCHEME.equals(uri.scheme()))
// {
// String uuid = view.getSession().getRepositoryInfo().getUUID();
// return uuid.equals(CDOURIUtil.extractRepositoryUUID(uri));
// }
CDOViewProvider[] viewProviders = CDOViewProviderRegistry.INSTANCE.getViewProviders(uri);
return viewProviders.length != 0;
}
public boolean exists(URI uri, Map<?, ?> options)
{
String path = getPath(uri);
return view.hasResource(path);
}
public void delete(URI uri, Map<?, ?> options) throws IOException
{
String path = CDOURIUtil.extractResourcePath(uri);
CDOTransaction transaction = null;
try
{
transaction = view.getSession().openTransaction();
CDOResourceNode node = transaction.getResourceNode(path);
node.delete(options);
transaction.commit();
}
catch (Exception ex)
{
IOException ioException = new IOException(ex.getMessage());
ioException.initCause(ex);
throw ioException;
}
finally
{
IOUtil.closeSilent(transaction);
}
}
public InputStream createInputStream(URI uri, Map<?, ?> options) throws IOException
{
throw new IOException("CDOURIHandler.createInputStream() not implemented"); //$NON-NLS-1$
}
public OutputStream createOutputStream(URI uri, Map<?, ?> options) throws IOException
{
throw new IOException("CDOURIHandler.createOutputStream() not implemented"); //$NON-NLS-1$
}
public Map<String, ?> contentDescription(URI uri, Map<?, ?> options) throws IOException
{
// ViK: I hardly find this useful for CDO. ContentHandler defines, for instance, VALIDITY_PROPERTY
// It might make sense in CDO... We could also introduce some CDO-Specific information here...
return ContentHandler.INVALID_CONTENT_DESCRIPTION;
}
@SuppressWarnings("unchecked")
public Map<String, ?> getAttributes(URI uri, Map<?, ?> options)
{
Map<String, Object> result = new HashMap<String, Object>();
String path = CDOURIUtil.extractResourcePath(uri);
CDOResourceNode node = view.getResourceNode(path);
if (node != null)
{
Set<String> requestedAttributes = (Set<String>)options.get(URIConverter.OPTION_REQUESTED_ATTRIBUTES);
if (requestedAttributes == null || requestedAttributes.contains(URIConverter.ATTRIBUTE_TIME_STAMP))
{
long stamp = node instanceof CDOResource ? ((CDOResource)node).getTimeStamp() : URIConverter.NULL_TIME_STAMP;
result.put(URIConverter.ATTRIBUTE_TIME_STAMP, stamp);
}
if (requestedAttributes == null || requestedAttributes.contains(URIConverter.ATTRIBUTE_DIRECTORY))
{
result.put(URIConverter.ATTRIBUTE_DIRECTORY, node instanceof CDOResourceFolder);
}
if (requestedAttributes == null || requestedAttributes.contains(URIConverter.ATTRIBUTE_READ_ONLY))
{
result.put(URIConverter.ATTRIBUTE_READ_ONLY, view.isReadOnly());
}
}
return result;
}
public void setAttributes(URI uri, Map<String, ?> attributes, Map<?, ?> options) throws IOException
{
// ViK: We can't change any of the proposed attributes. Only TIME_STAMP, and I believe we are not
// storing that attribute in the server. Due to CDOResouce distributed nature, changing it wouldn't make much sense.
}
private String getPath(URI uri)
{
if (CDO_URI_SCHEME.equals(uri.scheme()))
{
return CDOURIUtil.extractResourcePath(uri);
}
for (CDOViewProvider viewProvider : CDOViewProviderRegistry.INSTANCE.getViewProviders(uri))
{
if (viewProvider instanceof CDOViewProvider2)
{
return ((CDOViewProvider2)viewProvider).getPath(uri);
}
}
return null;
}
}
|
