| /* |
| * 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.SequenceType; |
| import net.sf.saxon.value.StringValue; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class MyExtensionFunction2 extends ExtensionFunctionDefinition { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MyExtensionFunction2.class); |
| |
| @Override |
| public StructuredQName getFunctionQName() { |
| return new StructuredQName("", "http://mytest/", "myExtensionFunction2"); |
| } |
| |
| @Override |
| public int getMinimumNumberOfArguments() { |
| return 1; |
| } |
| |
| @Override |
| public int getMaximumNumberOfArguments() { |
| return 2; |
| } |
| |
| @Override |
| public SequenceType[] getArgumentTypes() { |
| return new SequenceType[]{SequenceType.SINGLE_STRING, SequenceType.OPTIONAL_STRING}; |
| } |
| |
| @Override |
| public SequenceType getResultType(SequenceType[] suppliedArgumentTypes) { |
| int resultCardinality = 1; |
| return SequenceType.makeSequenceType(SequenceType.SINGLE_STRING.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) |
| StringValue arg1 = (StringValue) arguments[0].iterate().next(); |
| String arg1Str = arg1.getStringValue(); |
| |
| // 2nd argument (optional, index 1) |
| String arg2Str = ""; |
| if (arguments.length > 1) { |
| StringValue arg2 = (StringValue) arguments[1].iterate().next(); |
| arg2Str = arg2.getStringValue(); |
| } |
| |
| // Functionality goes here |
| String resultStr = arg1Str + arg2Str; |
| |
| Item result = new StringValue(resultStr); |
| return SequenceTool.toLazySequence(SingletonIterator.makeIterator(result)); |
| } |
| }; |
| } |
| |
| } |