/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.component.xslt.extensions;
import net.sf.saxon.expr.XPathContext;
import net.sf.saxon.lib.ExtensionFunctionCall;
import net.sf.saxon.lib.ExtensionFunctionDefinition;
import net.sf.saxon.om.Item;
import net.sf.saxon.om.Sequence;
import net.sf.saxon.om.SequenceTool;
import net.sf.saxon.om.StructuredQName;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.tree.iter.SingletonIterator;
import net.sf.saxon.value.Int64Value;
import net.sf.saxon.value.SequenceType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class MyExtensionFunction1 extends ExtensionFunctionDefinition {
private static final long serialVersionUID = 1L;
private static final Logger LOG = LoggerFactory.getLogger(MyExtensionFunction1.class);
@Override
public StructuredQName getFunctionQName() {
return new StructuredQName("", "http://mytest/", "myExtensionFunction1");
}
@Override
public int getMinimumNumberOfArguments() {
return 2;
}
@Override
public int getMaximumNumberOfArguments() {
return 2;
}
@Override
public SequenceType[] getArgumentTypes() {
return new SequenceType[]{SequenceType.SINGLE_INTEGER, SequenceType.SINGLE_INTEGER};
}
@Override
public SequenceType getResultType(SequenceType[] suppliedArgumentTypes) {
int resultCardinality = 1;
return SequenceType.makeSequenceType(SequenceType.SINGLE_INTEGER.getPrimaryType(), resultCardinality);
}
@Override
public ExtensionFunctionCall makeCallExpression() {
return new ExtensionFunctionCall() {
private static final long serialVersionUID = 1L;
@Override
public Sequence call(XPathContext xPathContext, Sequence[] arguments) throws XPathException {
// 1st argument (mandatory, index 0)
Int64Value arg1 = (Int64Value) arguments[0].iterate().next();
int arg1Int = arg1.getDecimalValue().toBigInteger().intValue();
// 2nd argument (mandatory, index 1)
Int64Value arg2 = (Int64Value) arguments[1].iterate().next();
int arg2Int = arg2.getDecimalValue().toBigInteger().intValue();
// Functionality goes here
int resultInt = arg1Int + arg2Int;
Item result = new Int64Value(resultInt);
return SequenceTool.toLazySequence(SingletonIterator.makeIterator(result));
}
};
}
}