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1
18 package org.apache.beehive.netui.pageflow.scoping.internal;
19
20 import org.apache.log4j.Logger;
21 import org.apache.log4j.Priority;
22
23 import java.util.HashMap  ;
24 import java.util.Enumeration ;
25 import java.util.Collections ;
26 import java.util.Map ;
27 import java.util.Iterator ;
28 import java.io.Serializable ;
29
30
31 public class AttributeContainer
32 {
33 private static final Logger logger = Logger.getLogger( AttributeContainer.class );
34
35 private Map _attrs;
36
37 public Object getAttribute( String attrName )
38 {
39 return ( _attrs != null ? _attrs.get( attrName ) : null );
40 }
41
42 public void setAttribute( String attrName, Object o )
43 {
44 if ( _attrs == null )
45 {
46 _attrs = new HashMap ();
47 }
48
49 _attrs.put( attrName, o );
50 }
51
52 public Enumeration getAttributeNames()
53 {
54 if ( _attrs == null )
55 {
56 _attrs = new HashMap ();
57 }
58
59 return Collections.enumeration( _attrs.keySet() );
60 }
61
62 public String [] getAttributeNamesArray()
63 {
64 if ( _attrs == null )
65 {
66 return new String [0];
67 }
68
69 return ( String [] ) _attrs.keySet().toArray( new String [0] );
70 }
71
72 public void removeAttribute( String attrName )
73 {
74 if ( _attrs != null )
75 {
76 _attrs.remove( attrName );
77 }
78 }
79
80 public void removeAllAttributes()
81 {
82 _attrs = null;
83 }
84
85 protected final Map getSerializableAttrs()
86 {
87 Map ret = new HashMap ();
88
89 for ( Iterator i = _attrs.entrySet().iterator(); i.hasNext(); )
90 {
91 Map.Entry entry = ( Map.Entry ) i.next();
92
93 if ( entry.getValue() instanceof Serializable )
94 {
95 ret.put( entry.getKey(), entry.getValue() );
96 }
97 else
98 {
99 if ( logger.isEnabledFor( Priority.INFO ) )
100 {
101 logger.info( "Dropping non-serializable request attribute " + entry.getKey()
102 + " (" + entry.getValue() + ")." );
103 }
104 }
105 }
106
107 return ret;
108 }
109
110 protected final Map getAttrMap()
111 {
112 return _attrs;
113 }
114
115 protected final void setAttrMap( Map attrs )
116 {
117 _attrs = attrs;
118 }
119 }
120 |
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