package org.pdf4j.saxon.sql;
import org.pdf4j.saxon.expr.Expression;
import org.pdf4j.saxon.expr.SimpleExpression;
import org.pdf4j.saxon.expr.StaticProperty;
import org.pdf4j.saxon.expr.XPathContext;
import org.pdf4j.saxon.instruct.Executable;
import org.pdf4j.saxon.om.Item;
import org.pdf4j.saxon.style.ExtensionInstruction;
import org.pdf4j.saxon.trans.SaxonErrorCode;
import org.pdf4j.saxon.trans.XPathException;
import org.pdf4j.saxon.value.ObjectValue;
import java.sql.Connection;
import java.sql.SQLException;
/**
* An sql:close element in the stylesheet.
*/
public class SQLClose extends ExtensionInstruction {
Expression connection = null;
public void prepareAttributes() throws XPathException {
String connectAtt = getAttributeList().getValue("", "connection");
if (connectAtt==null) {
reportAbsence("connection");
} else {
connection = makeExpression(connectAtt);
}
}
public void validate() throws XPathException {
super.validate();
connection = typeCheck("connection", connection);
}
public Expression compile(Executable exec) throws XPathException {
return new CloseInstruction(connection);
}
private static class CloseInstruction extends SimpleExpression {
public static final int CONNECTION = 0;
public CloseInstruction(Expression connect) {
Expression[] sub = {connect};
setArguments(sub);
}
/**
* A subclass must provide one of the methods evaluateItem(), iterate(), or process().
* This method indicates which of the three is provided.
*/
public int getImplementationMethod() {
return Expression.EVALUATE_METHOD;
}
public String getExpressionType() {
return "sql:close";
}
public int computeCardinality() {
return StaticProperty.ALLOWS_ZERO_OR_ONE;
}
public Item evaluateItem(XPathContext context) throws XPathException {
Item conn = arguments[CONNECTION].evaluateItem(context);
if (!(conn instanceof ObjectValue && ((ObjectValue)conn).getObject() instanceof Connection) ) {
dynamicError("Value of connection expression is not a JDBC Connection", SaxonErrorCode.SXSQ0001, context);
}
Connection connection = (Connection)((ObjectValue)conn).getObject();
try {
connection.close();
} catch (SQLException ex) {
dynamicError("(SQL) Failed to close connection: " + ex.getMessage(), SaxonErrorCode.SXSQ0002, context);
}
return null;
}
}
}
//
// 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.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Additional Contributor(s): Rick Bonnett [rbonnett@acadia.net]
//