package client.net.sf.saxon.ce.functions;
import client.net.sf.saxon.ce.expr.XPathContext;
import client.net.sf.saxon.ce.om.Item;
import client.net.sf.saxon.ce.trans.XPathException;
import client.net.sf.saxon.ce.value.AtomicValue;
import client.net.sf.saxon.ce.value.StringValue;
/**
* This class implements the upper-case() and lower-case() functions
*/
public class ForceCase extends SystemFunction {
public ForceCase(int operation) {
this.operation = operation;
}
public ForceCase newInstance() {
return new ForceCase(operation);
}
public static final int UPPERCASE = 0;
public static final int LOWERCASE = 1;
/**
* Evaluate in a general context
*/
public Item evaluateItem(XPathContext c) throws XPathException {
AtomicValue sv = (AtomicValue)argument[0].evaluateItem(c);
if (sv==null) {
return StringValue.EMPTY_STRING;
}
switch(operation) {
case UPPERCASE:
return StringValue.makeStringValue(sv.getStringValue().toUpperCase());
case LOWERCASE:
return StringValue.makeStringValue(sv.getStringValue().toLowerCase());
default:
throw new UnsupportedOperationException("Unknown function");
}
}
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.