Added transform() method to TransformerObjectSupport.

xml/src/main/java/org/springframework/xml/transform/TransformerObjectSupport.java

@@ -16,8 +16,11 @@
 
 package org.springframework.xml.transform;
 
+import javax.xml.transform.Result;
+import javax.xml.transform.Source;
 import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerConfigurationException;
+import javax.xml.transform.TransformerException;
 import javax.xml.transform.TransformerFactory;
 
 import org.apache.commons.logging.Log;
@@ -49,7 +52,7 @@ public abstract class TransformerObjectSupport {
     }
 
     /**
-     * Creates a new <code>Transformer</code>. Must be called per request, as transformer is not thread-safe.
+     * Creates a new <code>Transformer</code>. Must be called per request, as transformers are not thread-safe.
      *
      * @return the created transformer
      * @throws TransformerConfigurationException
@@ -59,4 +62,17 @@ public abstract class TransformerObjectSupport {
         return transformerFactory.newTransformer();
     }
 
+    /**
+     * Transforms the given {@link Source} to the given {@link Result}. Creates a new {@link Transformer} for every
+     * call, as transformers are not thread-safe.
+     *
+     * @param source the source to transform from
+     * @param result the result to transform to
+     * @throws TransformerException if thrown by JAXP methods
+     */
+    protected final void transform(Source source, Result result) throws TransformerException {
+        Transformer transformer = createTransformer();
+        transformer.transform(source, result);
+    }
+
 }

xml/src/main/java/org/springframework/xml/xpath/AbstractXPathTemplate.java

@@ -18,7 +18,6 @@ package org.springframework.xml.xpath;
 
 import java.util.Properties;
 import javax.xml.transform.Source;
-import javax.xml.transform.Transformer;
 import javax.xml.transform.TransformerException;
 import javax.xml.transform.dom.DOMResult;
 
@@ -74,9 +73,8 @@ public abstract class AbstractXPathTemplate extends TransformerObjectSupport imp
      * @return the root element
      */
     protected Element getRootElement(Source source) throws TransformerException {
-        Transformer transformer = createTransformer();
         DOMResult domResult = new DOMResult();
-        transformer.transform(source, domResult);
+        transform(source, domResult);
         Document document = (Document) domResult.getNode();
         return document.getDocumentElement();
     }