ProjectInfo


1   /*******************************************************************************
2    * Copyright (c) 2000, 2005 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    * 
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.core.internal.resources;
12  
13  import java.util.HashMap  ;
14  import org.eclipse.core.internal.events.BuildCommand;
15  import org.eclipse.core.resources.ICommand;
16  import org.eclipse.core.resources.IProjectNature;
17  import org.eclipse.core.runtime.content.IContentTypeMatcher;
18  
19  public class ProjectInfo extends ResourceInfo {
20  
21      /** The description of this object */
22      protected ProjectDescription description = null;
23  
24      /** The list of natures for this project */
25      protected HashMap   natures = null;
26  
27      /** The property store for this resource (used only by the compatibility fragment) */
28      protected Object   propertyStore = null;
29  
30      /** The content type matcher for this project. */
31      protected IContentTypeMatcher matcher = null;
32  
33      /**
34       * Discards any stale state on this project after it has been moved.  Builder
35       * instances must be cleared because they reference the old project handle.
36       */
37      public synchronized void fixupAfterMove() {
38          natures = null;
39          // note that the property store instance will be recreated lazily
40          propertyStore = null;
41          if (description != null) {
42              ICommand[] buildSpec = description.getBuildSpec(false);
43              for (int i = 0; i < buildSpec.length; i++)
44                  ((BuildCommand) buildSpec[i]).setBuilder(null);
45          }
46      }
47  
48      /**
49       * Returns the description associated with this info.  The return value may be null.
50       */
51      public ProjectDescription getDescription() {
52          return description;
53      }
54  
55      /**
56       * Returns the content type matcher associated with this info.  The return value may be null.
57       */
58      public IContentTypeMatcher getMatcher() {
59          return matcher;
60      }
61  
62      public IProjectNature getNature(String   natureId) {
63          // thread safety: (Concurrency001)
64          HashMap   temp = natures;
65          if (temp == null)
66              return null;
67          return (IProjectNature) temp.get(natureId);
68      }
69  
70      /**
71       * Returns the property store associated with this info.  The return value may be null.
72       */
73      public Object   getPropertyStore() {
74          return propertyStore;
75      }
76  
77      /**
78       * Sets the description associated with this info.  The value may be null.
79       */
80      public void setDescription(ProjectDescription value) {
81          if (description != null) {
82              //if we already have a description, assign the new
83              //build spec on top of the old one to ensure we maintain
84              //any existing builder instances in the old build commands
85              ICommand[] oldSpec = description.buildSpec;
86              ICommand[] newSpec = value.buildSpec;
87              value.buildSpec = oldSpec;
88              value.setBuildSpec(newSpec);
89          }
90          description = value;
91      }
92  
93      /**
94       * Sets the content type matcher to be associated with this info.  The value may be null.
95       */
96      public void setMatcher(IContentTypeMatcher matcher) {
97          this.matcher = matcher;
98      }
99  
100     public synchronized void setNature(String   natureId, IProjectNature value) {
101         // thread safety: (Concurrency001)
102         if (value == null) {
103             if (natures == null)
104                 return;
105             HashMap   temp = (HashMap  ) natures.clone();
106             temp.remove(natureId);
107             if (temp.isEmpty())
108                 natures = null;
109             else
110                 natures = temp;
111         } else {
112             HashMap   temp = natures;
113             if (temp == null)
114                 temp = new HashMap  (5);
115             else
116                 temp = (HashMap  ) natures.clone();
117             temp.put(natureId, value);
118             natures = temp;
119         }
120     }
121 
122     /**
123      * Sets the property store associated with this info.  The value may be null.
124      */
125     public void setPropertyStore(Object   value) {
126         propertyStore = value;
127     }
128 }
129
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