Fix #678: allow configuring custom SerializerFactory via JacksonXmlModule (#680)

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -4,6 +4,11 @@ Project: jackson-dataformat-xml
 === Releases ===
 ------------------------------------------------------------------------
 
+2.18.2 (not yet released)
+
+#678: XML module not registered correctly when setting a custom `SerializerFactory`
+ (reported by @SimonCockx)
+
 2.18.1 (28-Oct-2024)
 
 No changes since 2.18.0

src/main/java/com/fasterxml/jackson/dataformat/xml/JacksonXmlModule.java

@@ -2,7 +2,7 @@
 
 import com.fasterxml.jackson.databind.AnnotationIntrospector;
 import com.fasterxml.jackson.databind.module.SimpleModule;
-
+import com.fasterxml.jackson.databind.ser.SerializerFactory;
 import com.fasterxml.jackson.dataformat.xml.deser.FromXmlParser;
 import com.fasterxml.jackson.dataformat.xml.deser.XmlBeanDeserializerModifier;
 import com.fasterxml.jackson.dataformat.xml.ser.XmlBeanSerializerModifier;
@@ -39,13 +39,22 @@ public class JacksonXmlModule
     /**
      * Name used for pseudo-property used for returning XML Text value (which does
      * not have actual element name to use). Defaults to empty String, but
-     * may be changed for interoperability reasons: JAXB, for example, uses
+     * may be changed for inter-operability reasons: JAXB, for example, uses
      * "value" as name.
      * 
      * @since 2.1
      */
     protected String _cfgNameForTextElement = FromXmlParser.DEFAULT_UNNAMED_TEXT_PROPERTY;
-    
+
+    /**
+     * Optional override for {@link SerializerFactory}
+     * used by {@link XmlMapper}. Needed to allow proper override and configurability
+     * using custom {@SerializerFactory} implementations.
+     * 
+     * @since 2.18.2
+     */
+    protected SerializerFactory _serializerFactoryOverride;
+
     /*
     /**********************************************************************
     /* Life-cycle: construction
@@ -119,6 +128,29 @@ public void setDefaultUseWrapper(boolean state) {
     public void setXMLTextElementName(String name) {
         _cfgNameForTextElement = name;
     }
+
+    /**
+     * Method to use for overriding default {@link SerializerFactory} used
+     *
+     * @since 2.18.2
+     */
+    public JacksonXmlModule overrideSerializerFactory(SerializerFactory factory) {
+        _serializerFactoryOverride = factory;
+        return this;
+    }
+
+    /*
+    /**********************************************************************
+    /* Accessors
+    /**********************************************************************
+     */
+
+    /**
+     * @since 2.18.2
+     */
+    public SerializerFactory serializerFactoryOverride() {
+        return _serializerFactoryOverride;
+    }
 
     /*
     /**********************************************************************

src/main/java/com/fasterxml/jackson/dataformat/xml/XmlMapper.java

@@ -16,6 +16,7 @@
 import com.fasterxml.jackson.databind.deser.BeanDeserializerFactory;
 import com.fasterxml.jackson.databind.jsontype.PolymorphicTypeValidator;
 import com.fasterxml.jackson.databind.jsontype.TypeResolverBuilder;
+import com.fasterxml.jackson.databind.ser.SerializerFactory;
 import com.fasterxml.jackson.databind.type.LogicalType;
 import com.fasterxml.jackson.dataformat.xml.deser.FromXmlParser;
 import com.fasterxml.jackson.dataformat.xml.deser.XmlDeserializationContext;
@@ -166,6 +167,11 @@ public XmlMapper(XmlFactory xmlFactory, JacksonXmlModule module)
         _xmlModule = module;
         // but all the rest is done via Module interface!
         if (module != null) {
+            // [dataformat-xml#678]: need special handling for SerializerFactory override
+            SerializerFactory sfOverride = module.serializerFactoryOverride();
+            if (sfOverride != null) {
+                 setSerializerFactory(sfOverride);
+            }
             registerModule(module);
         }
         // 19-May-2015, tatu: Must ensure we use XML-specific indenter