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-/* EventConsumer.java --
- Copyright (C) 1999,2000,2001 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package gnu.xml.pipeline;
-
-import org.xml.sax.*;
-
-
-/**
- * Collects the event consumption apparatus of a SAX pipeline stage.
- * Consumers which permit some handlers or other characteristics to be
- * configured will provide methods to support that configuration.
- *
- * <p> Two important categories of consumers include <em>filters</em>, which
- * process events and pass them on to other consumers, and <em>terminus</em>
- * (or <em>terminal</em>) stages, which don't pass events on. Filters are not
- * necessarily derived from the {@link EventFilter} class, although that
- * class can substantially simplify their construction by automating the
- * most common activities.
- *
- * <p> Event consumers which follow certain conventions for the signatures
- * of their constructors can be automatically assembled into pipelines
- * by the {@link PipelineFactory} class.
- *
- * @author David Brownell
- */
-public interface EventConsumer
-{
- /** Most stages process these core SAX callbacks. */
- public ContentHandler getContentHandler ();
-
- /** Few stages will use unparsed entities. */
- public DTDHandler getDTDHandler ();
-
- /**
- * This method works like the SAX2 XMLReader method of the same name,
- * and is used to retrieve the optional lexical and declaration handlers
- * in a pipeline.
- *
- * @param id This is a URI identifying the type of property desired.
- * @return The value of that property, if it is defined.
- *
- * @exception SAXNotRecognizedException Thrown if the particular
- * pipeline stage does not understand the specified identifier.
- */
- public Object getProperty (String id)
- throws SAXNotRecognizedException;
-
- /**
- * This method provides a filter stage with a handler that abstracts
- * presentation of warnings and both recoverable and fatal errors.
- * Most pipeline stages should share a single policy and mechanism
- * for such reports, since application components require consistency
- * in such activities. Accordingly, typical responses to this method
- * invocation involve saving the handler for use; filters will pass
- * it on to any other consumers they use.
- *
- * @param handler encapsulates error handling policy for this stage
- */
- public void setErrorHandler (ErrorHandler handler);
-}
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