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8fc4b6ba05
- Code cleanup (propertyCount in MutableSection removed). - Codepage numbers aggregated in the new class org.apache.poi.hpsf.Constants. git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353561 13f79535-47bb-0310-9956-ffa450edef68
78 lines
2.9 KiB
Java
78 lines
2.9 KiB
Java
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/* ====================================================================
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Copyright 2002-2004 Apache Software Foundation
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hpsf;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.UnsupportedEncodingException;
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import java.rmi.UnexpectedException;
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/**
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* <p>Factory class to create instances of {@link SummaryInformation},
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* {@link DocumentSummaryInformation} and {@link PropertySet}.</p>
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*
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* @author Rainer Klute <a
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* href="mailto:klute@rainer-klute.de"><klute@rainer-klute.de></a>
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* @version $Id$
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* @since 2002-02-09
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*/
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public class PropertySetFactory
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{
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/**
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* <p>Creates the most specific {@link PropertySet} from an {@link
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* InputStream}. This is preferrably a {@link
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* DocumentSummaryInformation} or a {@link SummaryInformation}. If
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* the specified {@link InputStream} does not contain a property
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* set stream, an exception is thrown and the {@link InputStream}
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* is repositioned at its beginning.</p>
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*
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* @param stream Contains the property set stream's data.
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* @return The created {@link PropertySet}.
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* @throws NoPropertySetStreamException if the stream does not
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* contain a property set.
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* @throws MarkUnsupportedException if the stream does not support
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* the <code>mark</code> operation.
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* @throws IOException if some I/O problem occurs.
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* @exception UnsupportedEncodingException if the specified codepage is not
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* supported.
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*/
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public static PropertySet create(final InputStream stream)
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throws NoPropertySetStreamException, MarkUnsupportedException,
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UnsupportedEncodingException, IOException
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{
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final PropertySet ps = new PropertySet(stream);
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try
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{
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if (ps.isSummaryInformation())
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return new SummaryInformation(ps);
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else if (ps.isDocumentSummaryInformation())
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return new DocumentSummaryInformation(ps);
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else
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return ps;
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}
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catch (UnexpectedPropertySetTypeException ex)
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{
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/* This exception will never be throws because we already checked
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* explicitly for this case above. */
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throw new UnexpectedException(ex.toString());
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}
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}
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}
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