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1
17
18 package org.apache.avalon.repository.meta;
19
20 import java.io.Serializable  ;
21 import java.util.NoSuchElementException ;
22 import javax.naming.directory.Attributes ;
23 import javax.naming.directory.Attribute ;
24 import javax.naming.NamingException ;
25
26 import org.apache.avalon.repository.Artifact;
27
28
34 public class ArtifactDescriptor implements Serializable
35 {
36
40 public static final String DOMAIN_KEY = "meta.domain";
41 public static final String VERSION_KEY = "meta.version";
42 public static final String BUILD_KEY =
43 "avalon.artifact.signature";
44
45
49 private final String c_domain;
50 private final String c_version;
51
52 private final String m_group;
53 private final String m_name;
54 private final String m_version;
55 private final String m_build;
56
57 private final Artifact m_artifact;
58
59
63
71 public ArtifactDescriptor( Attributes attributes )
72 throws MetaException
73 {
74 if( null == attributes )
75 throw new NullPointerException ( "attributes" );
76
77 try
78 {
79 c_domain = getValue( attributes, DOMAIN_KEY );
80 if( null == c_domain )
81 {
82 final String error =
83 "Missing attribute: " + DOMAIN_KEY;
84 throw new MetaException( error );
85 }
86
87 c_version = getValue( attributes, VERSION_KEY );
88 if( null == c_version )
89 {
90 final String error =
91 "Missing attribute: " + VERSION_KEY;
92 throw new MetaException( error );
93 }
94
95 m_group = getAttribute( attributes, Artifact.GROUP_KEY, "" );
96 m_name = getAttribute( attributes, Artifact.NAME_KEY, "" );
97 m_version = getAttribute( attributes, Artifact.VERSION_KEY, "" );
98 m_build = getAttribute( attributes, BUILD_KEY, "" );
99
100 m_artifact = Artifact.createArtifact( m_group, m_name, m_version );
101
102 }
103 catch( NamingException e )
104 {
105 final String error =
106 "Unexpected naming exception during metadata creation.";
107 throw new MetaException( error, e );
108 }
109 catch( NoSuchElementException e )
110 {
111 final String error =
112 "Unexpected exception during metadata creation.";
113 throw new MetaException( error, e );
114 }
115 }
116
117
121
125 public Artifact getArtifact()
126 {
127 return m_artifact;
128 }
129
130
134 public String getDomain()
135 {
136 return c_domain;
137 }
138
139
143 public String getVersion()
144 {
145 return c_version;
146 }
147
148
152 public String getBuild()
153 {
154 return m_build;
155 }
156
157
162 public boolean equals( Object other )
163 {
164 boolean isEqual = other instanceof ArtifactDescriptor;
165 if ( isEqual )
166 {
167 ArtifactDescriptor meta = (ArtifactDescriptor) other;
168 isEqual = isEqual && c_domain.equals( meta.c_domain );
169 isEqual = isEqual && c_version.equals( meta.c_version );
170 isEqual = isEqual && m_group.equals( meta.m_version );
171 isEqual = isEqual && m_name.equals( meta.m_name );
172 isEqual = isEqual && m_version.equals( meta.m_version );
173 }
174 return isEqual;
175 }
176
177
181 public int hashCode()
182 {
183 int hash = 1;
184 hash >>>= 13;
185 hash ^= c_domain.hashCode();
186 hash >>>= 13;
187 hash ^= c_version.hashCode();
188 hash >>>= 13;
189 hash ^= m_group.hashCode();
190 hash >>>= 13;
191 hash ^= m_version.hashCode();
192 hash >>>= 13;
193 hash ^= m_build.hashCode();
194 hash >>>= 13;
195 return hash;
196 }
197
198
202 public String toString()
203 {
204 return "[artifact: " + getDomain()
205 + "::" + getVersion() + "]";
206 }
207
208
212 private String getAttribute( Attributes attributes, String key, String def )
213 {
214 try
215 {
216 return getValue( attributes, key );
217 }
218 catch( Throwable e )
219 {
220 return def;
221 }
222 }
223
224 protected String getValue( Attributes attributes, String key )
225 throws NamingException , NoSuchElementException
226 {
227 Attribute attribute = attributes.get( key );
228 if( null == attribute ) return null;
229 Object object = attribute.get();
230 if( null == object ) return null;
231 return object.toString();
232 }
233 }
234 |
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