|
1
50
51 package org.apache.excalibur.configuration.validation;
52
53 import java.io.InputStream  ;
54 import java.util.HashMap ;
55 import java.util.Iterator ;
56 import java.util.Map ;
57
58 import org.apache.avalon.framework.activity.Disposable;
59 import org.apache.avalon.framework.activity.Initializable;
60 import org.apache.avalon.framework.configuration.Configurable;
61 import org.apache.avalon.framework.configuration.Configuration;
62 import org.apache.avalon.framework.configuration.ConfigurationException;
63 import org.apache.avalon.framework.container.ContainerUtil;
64 import org.apache.avalon.framework.logger.AbstractLogEnabled;
65
66
71 public class DelegatingConfigurationValidatorFactory
72 extends AbstractLogEnabled
73 implements Configurable, Initializable, Disposable, ConfigurationValidatorFactory
74 {
75 private Map m_delegates = new HashMap ();
76 private String m_supportedTypes;
77
78 public void configure( Configuration configuration )
79 throws ConfigurationException
80 {
81 final Configuration[] delegates = configuration.getChildren( "delegate" );
82 final StringBuffer types = new StringBuffer ();
83
84 for( int i = 0; i < delegates.length; i++ )
85 {
86 final String type = delegates[ i ].getAttribute( "schema-type" );
87 final DelegateEntry entry =
88 new DelegateEntry( type,
89 delegates[ i ].getAttribute( "class" ),
90 delegates[ i ] );
91 m_delegates.put( type, entry );
92 if( i > 0 )
93 {
94 types.append( "," );
95 }
96
97 types.append( type );
98 }
99
100 this.m_supportedTypes = types.toString();
101 }
102
103 public void initialize()
104 throws Exception
105 {
106 for( Iterator i = m_delegates.values().iterator(); i.hasNext(); )
107 {
108 final DelegateEntry entry = (DelegateEntry)i.next();
109 final Class clazz = Class.forName( entry.getClassName() );
110 final ConfigurationValidatorFactory validator =
111 (ConfigurationValidatorFactory)clazz.newInstance();
112
113 ContainerUtil.enableLogging( validator, getLogger() );
114 ContainerUtil.configure( validator, entry.getConfiguration() );
115 ContainerUtil.initialize( validator );
116
117 entry.setValidatorFactory( validator );
118 }
119 }
120
121 public void dispose()
122 {
123 for( Iterator i = m_delegates.values().iterator(); i.hasNext(); )
124 {
125 ContainerUtil.dispose( ( (DelegateEntry)i.next() ).getValidatorFactory() );
126 }
127 }
128
129 public ConfigurationValidator createValidator( String schemaType, InputStream schema )
130 throws ConfigurationException
131 {
132 final DelegateEntry entry = (DelegateEntry)m_delegates.get( schemaType );
133 if( entry == null )
134 {
135 final String msg = "Invalid schema type: " + schemaType +
136 ". Validator only supports: " + m_supportedTypes;
137 throw new ConfigurationException( msg );
138 }
139
140 return entry.getValidatorFactory().createValidator( schemaType, schema );
141 }
142 }
143 |
Popular Tags |
Java API By Example, From Geeks To Geeks.