CAMEL-20523: camel-xpath - The resultQName converter is wrong causing… (

#13389)

CAMEL-20523: camel-xpath - The resultQName converter is wrong causing CSB not to work with xpath in language endpoint

core/camel-core/src/test/java/org/apache/camel/language/XPathLanguageEndpointTest.java

@@ -0,0 +1,61 @@
+/*
+ * 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;
+
+import javax.xml.namespace.QName;
+import javax.xml.xpath.XPathConstants;
+
+import org.apache.camel.ContextTestSupport;
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class XPathLanguageEndpointTest extends ContextTestSupport {
+
+    @Test
+    public void testXPath() throws Exception {
+        getMockEndpoint("mock:result").expectedBodiesReceived("Hello World");
+
+        template.sendBody("direct:start", "<foo>Hello World</foo>");
+
+        assertMockEndpointsSatisfied();
+
+        // test converter also works with shorthand names
+        QName qn = context.getTypeConverter().convertTo(QName.class, "NODESET");
+        Assertions.assertEquals(XPathConstants.NODESET, qn);
+        qn = context.getTypeConverter().convertTo(QName.class, "nodeset");
+        Assertions.assertEquals(XPathConstants.NODESET, qn);
+        qn = context.getTypeConverter().convertTo(QName.class, "BOOLEAN");
+        Assertions.assertEquals(XPathConstants.BOOLEAN, qn);
+        qn = context.getTypeConverter().convertTo(QName.class, "boolean");
+        Assertions.assertEquals(XPathConstants.BOOLEAN, qn);
+    }
+
+    @Override
+    protected RouteBuilder createRouteBuilder() throws Exception {
+        return new RouteBuilder() {
+            @Override
+            public void configure() throws Exception {
+                from("direct:start")
+                        .setHeader(Exchange.LANGUAGE_SCRIPT, constant("/foo/text()"))
+                        .to("language:xpath")
+                        .to("mock:result");
+            }
+        };
+    }
+}

core/camel-xml-jaxp/src/main/java/org/apache/camel/converter/jaxp/XmlConverter.java

@@ -57,6 +57,7 @@
 import javax.xml.transform.stax.StAXSource;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
+import javax.xml.xpath.XPathConstants;
 
 import org.w3c.dom.Document;
 import org.w3c.dom.Element;
@@ -146,6 +147,17 @@ public void toResult(Source source, Result result, Properties outputProperties)
      */
     @Converter(order = 1)
     public QName toQName(String str) {
+        if ("NUMBER".equalsIgnoreCase(str)) {
+            return XPathConstants.NUMBER;
+        } else if ("STRING".equalsIgnoreCase(str)) {
+            return XPathConstants.STRING;
+        } else if ("BOOLEAN".equalsIgnoreCase(str)) {
+            return XPathConstants.BOOLEAN;
+        } else if ("NODESET".equalsIgnoreCase(str)) {
+            return XPathConstants.NODESET;
+        } else if ("NODE".equalsIgnoreCase(str)) {
+            return XPathConstants.NODE;
+        }
         return QName.valueOf(str);
     }