/*
* eXist Open Source Native XML Database
* Copyright (C) 2010 The eXist Project
* http://exist-db.org
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $Id: XMLDBGetCurrentUser.java 10742 2009-12-15 11:35:15Z shabanovd $
*/
package org.exist.xquery.functions.xmldb;
import org.apache.log4j.Logger;
import org.exist.dom.QName;
import org.exist.security.AXSchemaType;
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.functions.securitymanager.GetPrincipalMetadataFunction;
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.StringValue;
import org.exist.xquery.value.Type;
/**
* @author Loren Cahlander
*
*/
@Deprecated
public class XMLDBGetCurrentUserAttribute extends BasicFunction
{
protected static final Logger logger = Logger.getLogger(XMLDBGetCurrentUserAttribute.class);
public final static FunctionSignature signature =
new FunctionSignature(
new QName("get-current-user-attribute", XMLDBModule.NAMESPACE_URI, XMLDBModule.PREFIX),
"Returns the attribute of the current user account.",
new SequenceType[] {
new FunctionParameterSequenceType("name", Type.STRING, Cardinality.EXACTLY_ONE, "The name of the user attribute")
},
new FunctionReturnSequenceType(Type.STRING, Cardinality.ZERO_OR_ONE, "the attribute value of the current user"),
GetPrincipalMetadataFunction.FNS_GET_ACCOUNT_METADATA
);
public XMLDBGetCurrentUserAttribute(XQueryContext context, FunctionSignature signature)
{
super(context, signature);
}
public Sequence eval(Sequence args[], Sequence contextSequence) throws XPathException
{
if( args[0].isEmpty() ) {
return Sequence.EMPTY_SEQUENCE;
}
final String attributeName = args[0].getStringValue();
final AXSchemaType type = AXSchemaType.valueOfNamespace(attributeName);
if (type == null)
{return Sequence.EMPTY_SEQUENCE;} //UNDERSTAND: error?
final Object value = context.getSubject().getMetadataValue(type);
if (value != null) {
final StringValue stringValue = new StringValue((String) value);
return stringValue;
} else {
return Sequence.EMPTY_SEQUENCE;
}
}
}