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124 lines
4.9 KiB
Java
124 lines
4.9 KiB
Java
// SAX error handler.
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// No warranty; no copyright -- use this as you will.
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// $Id: ErrorHandler.java,v 1.1 2000/10/02 02:43:17 sboag Exp $
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package org.xml.sax;
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/**
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* Basic interface for SAX error handlers.
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*
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* <blockquote>
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* <em>This module, both source code and documentation, is in the
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* Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
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* </blockquote>
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*
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* <p>If a SAX application needs to implement customized error
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* handling, it must implement this interface and then register an
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* instance with the XML reader using the
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* {@link org.xml.sax.XMLReader#setErrorHandler setErrorHandler}
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* method. The parser will then report all errors and warnings
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* through this interface.</p>
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*
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* <p><strong>WARNING:</strong> If an application does <em>not</em>
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* register an ErrorHandler, XML parsing errors will go unreported
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* and bizarre behaviour may result.</p>
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*
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* <p>For XML processing errors, a SAX driver must use this interface
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* instead of throwing an exception: it is up to the application
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* to decide whether to throw an exception for different types of
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* errors and warnings. Note, however, that there is no requirement that
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* the parser continue to provide useful information after a call to
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* {@link #fatalError fatalError} (in other words, a SAX driver class
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* could catch an exception and report a fatalError).</p>
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*
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* @since SAX 1.0
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* @author David Megginson,
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* <a href="mailto:sax@megginson.com">sax@megginson.com</a>
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* @version 2.0
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* @see org.xml.sax.Parser#setErrorHandler
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* @see org.xml.sax.SAXParseException
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*/
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public interface ErrorHandler {
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/**
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* Receive notification of a warning.
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*
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* <p>SAX parsers will use this method to report conditions that
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* are not errors or fatal errors as defined by the XML 1.0
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* recommendation. The default behaviour is to take no action.</p>
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*
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* <p>The SAX parser must continue to provide normal parsing events
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* after invoking this method: it should still be possible for the
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* application to process the document through to the end.</p>
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*
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* <p>Filters may use this method to report other, non-XML warnings
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* as well.</p>
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*
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* @param exception The warning information encapsulated in a
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* SAX parse exception.
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* @exception org.xml.sax.SAXException Any SAX exception, possibly
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* wrapping another exception.
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* @see org.xml.sax.SAXParseException
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*/
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public abstract void warning (SAXParseException exception)
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throws SAXException;
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/**
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* Receive notification of a recoverable error.
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*
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* <p>This corresponds to the definition of "error" in section 1.2
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* of the W3C XML 1.0 Recommendation. For example, a validating
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* parser would use this callback to report the violation of a
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* validity constraint. The default behaviour is to take no
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* action.</p>
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*
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* <p>The SAX parser must continue to provide normal parsing events
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* after invoking this method: it should still be possible for the
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* application to process the document through to the end. If the
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* application cannot do so, then the parser should report a fatal
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* error even if the XML 1.0 recommendation does not require it to
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* do so.</p>
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*
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* <p>Filters may use this method to report other, non-XML errors
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* as well.</p>
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*
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* @param exception The error information encapsulated in a
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* SAX parse exception.
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* @exception org.xml.sax.SAXException Any SAX exception, possibly
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* wrapping another exception.
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* @see org.xml.sax.SAXParseException
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*/
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public abstract void error (SAXParseException exception)
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throws SAXException;
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/**
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* Receive notification of a non-recoverable error.
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*
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* <p>This corresponds to the definition of "fatal error" in
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* section 1.2 of the W3C XML 1.0 Recommendation. For example, a
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* parser would use this callback to report the violation of a
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* well-formedness constraint.</p>
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*
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* <p>The application must assume that the document is unusable
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* after the parser has invoked this method, and should continue
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* (if at all) only for the sake of collecting addition error
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* messages: in fact, SAX parsers are free to stop reporting any
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* other events once this method has been invoked.</p>
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*
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* @param exception The error information encapsulated in a
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* SAX parse exception.
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* @exception org.xml.sax.SAXException Any SAX exception, possibly
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* wrapping another exception.
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* @see org.xml.sax.SAXParseException
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*/
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public abstract void fatalError (SAXParseException exception)
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throws SAXException;
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}
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// end of ErrorHandler.java
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