+++ /dev/null
-// SAX entity resolver.
-// http://www.saxproject.org
-// No warranty; no copyright -- use this as you will.
-// $Id: EntityResolver.java,v 1.7.2.3 2002/01/29 21:34:14 dbrownell Exp $
-
-package org.xml.sax;
-
-import java.io.IOException;
-
-
-/**
- * Basic interface for resolving entities.
- *
- * <blockquote>
- * <em>This module, both source code and documentation, is in the
- * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
- * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
- * for further information.
- * </blockquote>
- *
- * <p>If a SAX application needs to implement customized handling
- * for external entities, it must implement this interface and
- * register an instance with the SAX driver using the
- * {@link org.xml.sax.XMLReader#setEntityResolver setEntityResolver}
- * method.</p>
- *
- * <p>The XML reader will then allow the application to intercept any
- * external entities (including the external DTD subset and external
- * parameter entities, if any) before including them.</p>
- *
- * <p>Many SAX applications will not need to implement this interface,
- * but it will be especially useful for applications that build
- * XML documents from databases or other specialised input sources,
- * or for applications that use URI types other than URLs.</p>
- *
- * <p>The following resolver would provide the application
- * with a special character stream for the entity with the system
- * identifier "http://www.myhost.com/today":</p>
- *
- * <pre>
- * import org.xml.sax.EntityResolver;
- * import org.xml.sax.InputSource;
- *
- * public class MyResolver implements EntityResolver {
- * public InputSource resolveEntity (String publicId, String systemId)
- * {
- * if (systemId.equals("http://www.myhost.com/today")) {
- * // return a special input source
- * MyReader reader = new MyReader();
- * return new InputSource(reader);
- * } else {
- * // use the default behaviour
- * return null;
- * }
- * }
- * }
- * </pre>
- *
- * <p>The application can also use this interface to redirect system
- * identifiers to local URIs or to look up replacements in a catalog
- * (possibly by using the public identifier).</p>
- *
- * @since SAX 1.0
- * @author David Megginson
- * @version 2.0.1 (sax2r2)
- * @see org.xml.sax.XMLReader#setEntityResolver
- * @see org.xml.sax.InputSource
- */
-public interface EntityResolver {
-
-
- /**
- * Allow the application to resolve external entities.
- *
- * <p>The parser will call this method before opening any external
- * entity except the top-level document entity. Such entities include
- * the external DTD subset and external parameter entities referenced
- * within the DTD (in either case, only if the parser reads external
- * parameter entities), and external general entities referenced
- * within the document element (if the parser reads external general
- * entities). The application may request that the parser locate
- * the entity itself, that it use an alternative URI, or that it
- * use data provided by the application (as a character or byte
- * input stream).</p>
- *
- * <p>Application writers can use this method to redirect external
- * system identifiers to secure and/or local URIs, to look up
- * public identifiers in a catalogue, or to read an entity from a
- * database or other input source (including, for example, a dialog
- * box). Neither XML nor SAX specifies a preferred policy for using
- * public or system IDs to resolve resources. However, SAX specifies
- * how to interpret any InputSource returned by this method, and that
- * if none is returned, then the system ID will be dereferenced as
- * a URL. </p>
- *
- * <p>If the system identifier is a URL, the SAX parser must
- * resolve it fully before reporting it to the application.</p>
- *
- * @param publicId The public identifier of the external entity
- * being referenced, or null if none was supplied.
- * @param systemId The system identifier of the external entity
- * being referenced.
- * @return An InputSource object describing the new input source,
- * or null to request that the parser open a regular
- * URI connection to the system identifier.
- * @exception org.xml.sax.SAXException Any SAX exception, possibly
- * wrapping another exception.
- * @exception java.io.IOException A Java-specific IO exception,
- * possibly the result of creating a new InputStream
- * or Reader for the InputSource.
- * @see org.xml.sax.InputSource
- */
- public abstract InputSource resolveEntity (String publicId,
- String systemId)
- throws SAXException, IOException;
-
-}
-
-// end of EntityResolver.java
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