ValidationContext


1   package org.relaxng.datatype;
2   
3   /**
4    * An interface that must be implemented by caller to
5    * provide context information that is necessary to 
6    * perform validation of some Datatypes.
7    * 
8    * @author <a HREF="mailto:jjc@jclark.com">James Clark</a>
9    * @author <a HREF="mailto:kohsuke.kawaguchi@sun.com">Kohsuke KAWAGUCHI</a>
10   */
11  public interface ValidationContext {
12      
13      /**
14       * Resolves a namespace prefix to the corresponding namespace URI.
15       * 
16       * This method is used for validating the QName type, for example.
17       *
18       * <p>
19       * If the prefix is "" (empty string), it indicates
20       * an unprefixed value. The callee
21       * should resolve it as for an unprefixed
22       * element, rather than for an unprefixed attribute.
23       * 
24       * <p>
25       * If the prefix is "xml", then the callee must resolve
26       * this prefix into "http://www.w3.org/XML/1998/namespace",
27       * as defined in the XML Namespaces Recommendation.
28       * 
29       * @return
30       *      namespace URI of this prefix.
31       *      If the specified prefix is not declared,
32       *      the implementation must return null.
33       */
34      String   resolveNamespacePrefix( String   prefix );
35  
36      /**
37       * Returns the base URI of the context.  The null string may be returned
38       * if no base URI is known.
39       */
40      String   getBaseUri();
41  
42      /**
43       * Checks if an unparsed entity is declared with the
44       * specified name.
45       * 
46       * @return
47       *  true
48       *      if the DTD has an unparsed entity declaration for
49       *      the specified name.
50       *  false
51       *      otherwise.
52       */
53      boolean isUnparsedEntity( String   entityName );
54  
55      /**
56       * Checks if a notation is declared with the
57       * specified name.
58       * 
59       * @return
60       *  true
61       *      if the DTD has a notation declaration for the specified name.
62       *  false
63       *      otherwise.
64       */
65      boolean isNotation( String   notationName );
66  }
67
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