XMLCatalogHandler

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org.apache.xerces.readers
Class XMLCatalogHandler

java.lang.Object
  org.apache.xerces.readers.XMLCatalogHandler

All Implemented Interfaces:: org.xml.sax.EntityResolver

Direct Known Subclasses:: XCatalog

public abstract class XMLCatalogHandler
extends java.lang.Object
implements org.xml.sax.EntityResolver

Interface for implementing basic catalog support in the parser. To implement and use a Catalog, implement this interface and install your catalog instance as the EntityResolver in the parser's entity handler. For example:

     XMLParser parser = new AnyParser();
     parser.addCatalogHandler(new MyCatalog());

This default catalog implementation does not provide a method for loading multiple catalogs from various input sources. Instead, it is a convenient base class for other catalog implementations.

To create a catalog implementation, simply extend this class and implement the loadCatalog method. Public and system identifier mappings can be stored and accessed using the convenient public methods on this class.

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Field Summary

private java.util.Hashtable publicMap
          Public identifier mappings.

private java.util.Hashtable systemMap
          System identifier mappings (aliases).

Constructor Summary

XMLCatalogHandler()


Method Summary

void addPublicMapping(java.lang.String publicId, java.lang.String systemId)
          Adds a public to system identifier mapping.

void addSystemMapping(java.lang.String systemId1, java.lang.String systemId2)
          Adds a system identifier alias.

java.lang.String getPublicMapping(java.lang.String publicId)
          Returns a public identifier mapping.

java.util.Enumeration getPublicMappingKeys()
          Returns an enumeration of public identifier mapping keys.

java.lang.String getSystemMapping(java.lang.String systemId)
          Returns a system identifier alias.

java.util.Enumeration getSystemMappingKeys()
          Returns an enumeration of system identifier mapping keys.

abstract void loadCatalog(org.xml.sax.InputSource source)
          Loads the catalog stream specified by the given input source and appends the contents to the catalog.

void removePublicMapping(java.lang.System publicId)
          Removes a public identifier mapping.

void removeSystemMapping(java.lang.String systemId)
          Removes a system identifier alias.

org.xml.sax.InputSource resolveEntity(java.lang.String publicId, java.lang.String systemId)
          Resolves external entities.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

publicMap

private java.util.Hashtable publicMap

Public identifier mappings.

systemMap

private java.util.Hashtable systemMap

System identifier mappings (aliases).

Constructor Detail