Support unwrapping in @JsonRawValue serialization

Fixes https://github.com/FasterXML/jackson-databind/issues/3581

Author: yawkat

src/main/java/com/fasterxml/jackson/dataformat/xml/ser/ToXmlGenerator.java

@@ -732,6 +732,8 @@ public void writeRawValue(String text) throws IOException {
 
             if (_nextIsAttribute) {
                 _xmlWriter.writeAttribute(_nextName.getNamespaceURI(), _nextName.getLocalPart(), text);
+            } else if (checkNextIsUnwrapped()) {
+                _xmlWriter.writeRaw(text);
             } else {
                 _xmlWriter.writeStartElement(_nextName.getNamespaceURI(), _nextName.getLocalPart());
                 _xmlWriter.writeRaw(text);
@@ -756,6 +758,8 @@ public void writeRawValue(String text, int offset, int len) throws IOException {
 
             if (_nextIsAttribute) {
                 _xmlWriter.writeAttribute(_nextName.getNamespaceURI(), _nextName.getLocalPart(), text.substring(offset, offset + len));
+            } else if (checkNextIsUnwrapped()) {
+                _xmlWriter.writeRaw(text, offset, len);
             } else {
                 _xmlWriter.writeStartElement(_nextName.getNamespaceURI(), _nextName.getLocalPart());
                 _xmlWriter.writeRaw(text, offset, len);
@@ -779,6 +783,8 @@ public void writeRawValue(char[] text, int offset, int len) throws IOException {
         try {
             if (_nextIsAttribute) {
                 _xmlWriter.writeAttribute(_nextName.getNamespaceURI(), _nextName.getLocalPart(), new String(text, offset, len));
+            } else if (checkNextIsUnwrapped()) {
+                _xmlWriter.writeRaw(text, offset, len);
             } else {
                 _xmlWriter.writeStartElement(_nextName.getNamespaceURI(), _nextName.getLocalPart());
                 _xmlWriter.writeRaw(text, offset, len);

src/test/java/com/fasterxml/jackson/dataformat/xml/misc/XmlTextTest.java

@@ -2,10 +2,12 @@
 
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.annotation.JsonRawValue;
 import com.fasterxml.jackson.dataformat.xml.XmlMapper;
 import com.fasterxml.jackson.dataformat.xml.XmlTestBase;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText;
+import org.junit.Assert;
 
 public class XmlTextTest extends XmlTestBase
 {
@@ -44,6 +46,12 @@ static class Radius {
         public int value;
     }
 
+    static class RawValue {
+        @JacksonXmlText
+        @JsonRawValue
+        public String foo = "<a>b</a>";
+    }
+
 
     /*
     /**********************************************************
@@ -79,4 +87,11 @@ public void testSimple198() throws Exception
         Phone result = MAPPER.readValue(xml, Phone.class);
         assertNotNull(result);
     }
+
+    // for [dataformat-xml#3581]
+    public void testRawValue() throws Exception
+    {
+        String xml = MAPPER.writeValueAsString(new RawValue());
+        Assert.assertEquals("<RawValue><a>b</a></RawValue>", xml);
+    }
 }

src/test/java/com/fasterxml/jackson/dataformat/xml/stream/XmlGeneratorTest.java

@@ -183,6 +183,60 @@ public void testRawCharArrayValue() throws Exception
         assertEquals("<root><elem>value</elem></root>", xml);
     }
 
+    public void testRawSimpleValueUnwrapped() throws Exception
+    {
+        StringWriter out = new StringWriter();
+        ToXmlGenerator gen = XML_F.createGenerator(out);
+        // root name is special, need to be fed first:
+        gen.setNextName(new QName("root"));
+        gen.writeStartObject();
+        gen.setNextIsUnwrapped(true);
+        gen.writeFieldName("elem");
+        gen.writeRawValue("value");
+        gen.writeEndObject();
+        gen.close();
+        String xml = out.toString();
+        // one more thing: remove that annoying 'xmlns' decl, if it's there:
+        xml = removeSjsxpNamespace(xml);
+        assertEquals("<root>value</root>", xml);
+    }
+
+    public void testRawOffsetValueUnwrapped() throws Exception
+    {
+        StringWriter out = new StringWriter();
+        ToXmlGenerator gen = XML_F.createGenerator(out);
+        // root name is special, need to be fed first:
+        gen.setNextName(new QName("root"));
+        gen.writeStartObject();
+        gen.setNextIsUnwrapped(true);
+        gen.writeFieldName("elem");
+        gen.writeRawValue("NotAValue_value_NotAValue", 10, 5);
+        gen.writeEndObject();
+        gen.close();
+        String xml = out.toString();
+        // one more thing: remove that annoying 'xmlns' decl, if it's there:
+        xml = removeSjsxpNamespace(xml);
+        assertEquals("<root>value</root>", xml);
+    }
+
+    public void testRawCharArrayValueUnwrapped() throws Exception
+    {
+        StringWriter out = new StringWriter();
+        ToXmlGenerator gen = XML_F.createGenerator(out);
+        // root name is special, need to be fed first:
+        gen.setNextName(new QName("root"));
+        gen.writeStartObject();
+        gen.setNextIsUnwrapped(true);
+        gen.writeFieldName("elem");
+        gen.writeRawValue(new char[] {'!', 'v', 'a', 'l', 'u', 'e', '!'}, 1, 5);
+        gen.writeEndObject();
+        gen.close();
+        String xml = out.toString();
+        // one more thing: remove that annoying 'xmlns' decl, if it's there:
+        xml = removeSjsxpNamespace(xml);
+        assertEquals("<root>value</root>", xml);
+    }
+
     public void testRawSimpleAttribute() throws Exception
     {
         StringWriter out = new StringWriter();