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eXist-db XQuery File Module
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/*
* eXist-db Open Source Native XML Database
* Copyright (C) 2001 The eXist-db Authors
*
* [email protected]
* http://www.exist-db.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.exist.xquery.modules.file;
import java.io.IOException;
import java.nio.file.CopyOption;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.exist.dom.QName;
import org.exist.xquery.BasicFunction;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.BooleanValue;
import org.exist.xquery.value.FunctionParameterSequenceType;
import org.exist.xquery.value.FunctionReturnSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
/**
* @see java.nio.file.Files#move(Path, Path, CopyOption...)
*
* @author Dannes Wessels
*
*/
public class FileMove extends BasicFunction {
private final static Logger logger = LogManager.getLogger(FileMove.class);
public final static FunctionSignature signatures[] = {
new FunctionSignature(
new QName( "move", FileModule.NAMESPACE_URI, FileModule.PREFIX ),
"Move (rename) a file or directory. Exact operation is platform dependent. This " +
"method is only available to the DBA role.",
new SequenceType[] {
new FunctionParameterSequenceType( "original", Type.ITEM,
Cardinality.EXACTLY_ONE, "The full path or URI to the file" ),
new FunctionParameterSequenceType( "destination", Type.ITEM,
Cardinality.EXACTLY_ONE, "The full path or URI to the file" )
},
new FunctionReturnSequenceType( Type.BOOLEAN,
Cardinality.EXACTLY_ONE, "true if successful, false otherwise" ) )
};
public FileMove(final XQueryContext context, final FunctionSignature signature)
{
super(context, signature);
}
@Override
public Sequence eval(final Sequence[] args, final Sequence contextSequence) throws XPathException
{
if (!context.getSubject().hasDbaRole()) {
XPathException xPathException = new XPathException(this, "Permission denied, calling user '" + context.getSubject().getName() + "' must be a DBA to call this function.");
logger.error("Invalid user", xPathException);
throw xPathException;
}
Sequence moved = BooleanValue.FALSE;
final String inputPath1 = args[0].getStringValue();
final Path src = FileModuleHelper.getFile(inputPath1, this);
final String inputPath2 = args[1].getStringValue();
final Path dest = FileModuleHelper.getFile(inputPath2, this);
try {
Files.move(src, dest);
return BooleanValue.TRUE;
} catch(final IOException ioe) {
LOG.error(ioe);
return BooleanValue.FALSE;
}
}
}
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