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https://github.com/Alfresco/alfresco-community-repo.git
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31c250682b
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5081 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
74 lines
2.7 KiB
Java
74 lines
2.7 KiB
Java
/*
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* Copyright (C) 2005 Jesper Steen Møller
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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package org.alfresco.repo.content.metadata;
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import java.io.Serializable;
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import java.util.Map;
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import org.alfresco.service.cmr.repository.ContentIOException;
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import org.alfresco.service.cmr.repository.ContentReader;
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import org.alfresco.service.namespace.QName;
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/**
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*
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* @author Jesper Steen Møller
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*/
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public interface MetadataExtracter
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{
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/**
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* Provides the approximate accuracy with which this extracter can extract
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* metadata for the mimetype.
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* <p>
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*
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* @param sourceMimetype the source mimetype
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* @return Returns a score 0.0 to 1.0. 0.0 indicates that the extraction
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* cannot be performed at all. 1.0 indicates that the extraction can
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* be performed perfectly.
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*/
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public double getReliability(String sourceMimetype);
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/**
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* Provides an estimate, usually a worst case guess, of how long an
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* extraction will take.
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* <p>
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* This method is used to determine, up front, which of a set of equally
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* reliant transformers will be used for a specific extraction.
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*
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* @return Returns the approximate number of milliseconds per transformation
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*/
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public long getExtractionTime();
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/**
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* Extracts the metadata from the content provided by the reader and source
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* mimetype to the supplied map.
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* <p>
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* The extraction viability can be determined by an up front call to
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* {@link #getReliability(String)}.
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* <p>
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* The source mimetype <b>must</b> be available on the
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* {@link org.alfresco.service.cmr.repository.ContentAccessor#getMimetype()} method
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* of the reader.
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*
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* @param reader the source of the content
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* @param destination the destination of the extraction
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* @throws ContentIOException if an IO exception occurs
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*/
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public void extract(ContentReader reader, Map<QName, Serializable> destination) throws ContentIOException;
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}
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