package net.sf.saxon.functions;
import net.sf.saxon.Configuration;
import net.sf.saxon.trans.Err;
import net.sf.saxon.Platform;
import net.sf.saxon.expr.Expression;
import net.sf.saxon.expr.ExpressionVisitor;
import net.sf.saxon.expr.PendingUpdateList;
import net.sf.saxon.expr.XPathContext;
import net.sf.saxon.om.NodeInfo;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.type.Type;
import java.net.URI;
import java.net.URISyntaxException;
/**
* Implements the fn:put() function in XQuery Update 1.0.
*/
public class Put extends SystemFunction {
String expressionBaseURI = null;
public void checkArguments(ExpressionVisitor visitor) throws XPathException {
if (expressionBaseURI == null) {
super.checkArguments(visitor);
expressionBaseURI = visitor.getStaticContext().getBaseURI();
if (expressionBaseURI == null && argument.length == 1) {
XPathException de = new XPathException("Base URI in static context of resolve-uri() is unknown");
de.setErrorCode("FONS0005");
throw de;
}
}
}
/**
* Copy an expression. This makes a deep copy.
* @return the copy of the original expression
*/
public Expression copy() {
Put d = (Put)super.copy();
d.expressionBaseURI = expressionBaseURI;
return d;
}
/**
* Determine whether this is an updating expression as defined in the XQuery update specification
* @return true if this is an updating expression
*/
public boolean isUpdatingExpression() {
return true;
}
/**
* Evaluate an updating expression, adding the results to a Pending Update List.
* The default implementation of this method, which is used for non-updating expressions,
* throws an UnsupportedOperationException
* @param context the XPath dynamic evaluation context
* @param pul the pending update list to which the results should be written
*/
public void evaluatePendingUpdates(XPathContext context, PendingUpdateList pul) throws XPathException {
NodeInfo node = (NodeInfo)argument[0].evaluateItem(context);
int kind = node.getNodeKind();
if (kind != Type.ELEMENT && kind != Type.DOCUMENT) {
dynamicError("Node in put() must be a document or element node",
"FOUP0001", context);
}
String relative = argument[1].evaluateItem(context).getStringValue();
Platform platform = Configuration.getPlatform();
String abs;
try {
URI resolved = ResolveURI.makeAbsolute(relative, expressionBaseURI);
abs = resolved.toString();
} catch (URISyntaxException err) {
dynamicError("Base URI " + Err.wrap(expressionBaseURI) + " is invalid: " + err.getMessage(),
"FOUP0002", context);
abs = null;
}
pul.addPutAction(node, abs, this);
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Contributor(s):
//