Docjar: javax/ide/extension/spi/DependenciesVisitor.java

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Source code: javax/ide/extension/spi/DependenciesVisitor.java

1   package javax.ide.extension.spi;
2   
3   import javax.ide.extension.ElementEndContext;
4   import javax.ide.extension.ElementName;
5   import javax.ide.extension.ElementStartContext;
6   import javax.ide.extension.ElementVisitor;
7   import javax.ide.extension.ExtensionDependency;
8   import javax.ide.extension.ExtensionHook;
9   import javax.ide.util.Version;
10  
11  /**
12   * Visitor implementation for &lt;dependencies&gt;
13   */
14  public final class DependenciesVisitor extends ElementVisitor
15  {
16    public final static ElementName ELEMENT = new ElementName( 
17      ExtensionHook.MANIFEST_XMLNS, "dependencies" );
18    private final static ElementName IMPORT = new ElementName(
19      ExtensionHook.MANIFEST_XMLNS, "import" );
20  
21    private ElementVisitor _importVisitor = new ImportVisitor();
22    
23    private static final String MIN_VERSION = "minVersion";
24    private static final String MAX_VERSION = "maxVersion";
25  
26    public void start( ElementStartContext context )
27    {
28      context.registerChildVisitor( IMPORT, _importVisitor );
29    }
30    
31    public void end( ElementEndContext context )
32    {
33      
34    }
35    
36    private class ImportVisitor extends ElementVisitor
37    {
38      public void start( ElementStartContext context )
39      {
40        String minVersion = context.getAttributeValue( "minVersion" );
41        String maxVersion = context.getAttributeValue( "maxVersion" );
42        
43        Version vMinVersion = null;
44        if ( minVersion != null )
45        {
46          vMinVersion = new Version( minVersion );
47        }
48        
49        Version vMaxVersion = null;
50        if ( maxVersion != null )
51        {
52          vMaxVersion = new Version( maxVersion );
53        }
54        
55        context.getScopeData().put( MIN_VERSION, vMinVersion );
56        context.getScopeData().put( MAX_VERSION, vMaxVersion );
57      }
58      
59      public void end( ElementEndContext context )
60      {
61        String id = context.getText().trim();
62        if ( id.length() == 0 )
63        {
64          context.getLogger().severe(
65            "Missing extension id."
66          );
67          return;
68        }
69        ExtensionDependency dep = new ExtensionDependency( id, 
70          (Version) context.getScopeData().get( MIN_VERSION ), 
71          (Version) context.getScopeData().get( MAX_VERSION )
72        );
73        
74        DefaultExtension ext = (DefaultExtension) context.getScopeData().get(
75          ExtensionHook.KEY_EXTENSION
76        );
77        ext.addDependency( dep );
78      }
79    }
80  }