content: /*
   * 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.language.xquery.springboot;
  
  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.StructuredQName;
  import net.sf.saxon.trans.XPathException;
  import net.sf.saxon.value.SequenceType;
  import net.sf.saxon.value.StringValue;
  
  import org.apache.camel.EndpointInject;
  import org.apache.camel.ProducerTemplate;
  import org.apache.camel.builder.RouteBuilder;
  import org.apache.camel.component.mock.MockEndpoint;
  import org.apache.camel.spring.boot.CamelAutoConfiguration;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.test.context.SpringBootTest;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.test.annotation.DirtiesContext;
  
  import org.junit.jupiter.api.Test;
  
  import org.apache.camel.test.spring.junit5.CamelSpringBootTest;
  
  @DirtiesContext
  @CamelSpringBootTest
  @SpringBootTest(classes = { CamelAutoConfiguration.class, XQueryWithExtensionTest.class,
          XQueryWithExtensionTest.TestConfiguration.class })
  public class XQueryWithExtensionTest {
  
      @Autowired
      ProducerTemplate template;
  
      @EndpointInject("mock:result")
      protected MockEndpoint mock;
  
      private net.sf.saxon.Configuration conf;
  
      @Bean("saxonConf")
      public net.sf.saxon.Configuration loadConf() throws Exception {
  
          conf = new net.sf.saxon.Configuration();
          conf.registerExtensionFunction(new SimpleExtension());
  
          return conf;
      }
  
      @Test
      public void testWithExtension() throws Exception {
  
          mock.expectedBodiesReceived("<transformed extension-function-render=\"arg1[test]\"/>");
  
          template.sendBody("direct:start", "<body>test</body>");
  
          mock.assertIsSatisfied();
      }
  
      // *************************************
      // Config
      // *************************************
  
      @Configuration
      public class TestConfiguration {
  
          @Bean
          public RouteBuilder routeBuilder() {
              return new RouteBuilder() {
                  @Override
                  public void configure() throws Exception {
                      from("direct:start").to(
                              "xquery:org/apache/camel/component/xquery/transformWithExtension.xquery?configuration=#saxonConf")
                              .to("mock:result");
                  }
              };
          }
      }
  
      /**
       * This is a very simple example of a saxon extension function. We will use this for testing purposes.
       * <p/>
       * Example: <code>efx:simple('some text')</code> will be rendered to <code>arg1[some text]</code> and returned in
       * the XQuery response.
       */
      public static final class SimpleExtension extends ExtensionFunctionDefinition {
  
          private static final long serialVersionUID = 1L;
  
          @Override
          public SequenceType[] getArgumentTypes() {
              return new SequenceType[] { SequenceType.SINGLE_STRING };
          }
  
          @Override
          public SequenceType getResultType(SequenceType[] suppliedArgumentTypes) {
              return SequenceType.SINGLE_STRING;
          }
  
          @Override
          public StructuredQName getFunctionQName() {
              return new StructuredQName("efx", "http://test/saxon/ext", "simple");
          }
  
          @Override
          public ExtensionFunctionCall makeCallExpression() {
              return new ExtensionFunctionCall() {
  
                  @Override
                  public Sequence call(XPathContext xPathContext, Sequence[] sequences) throws XPathException {
                      // get value of first arg passed to the function
                      Item arg1 = sequences[0].head();
                      String arg1Val = arg1.getStringValue();
  
                      // return a altered version of the first arg
                      return new StringValue("arg1[" + arg1Val + "]");
                  }
              };
          }
      }
  }
  