add ScriptLanguage to allow for javascript resource extensions in addition to xquery

Author: sammefford

src/main/java/com/marklogic/client/admin/ExtensionMetadata.java

@@ -23,10 +23,25 @@
  * is optional but recommended.
  */
 public class ExtensionMetadata {
+    /**
+     * The ScriptLanguage enumeration specifies the categories of metadata read from or written to the database.
+     */
+	public enum ScriptLanguage {
+		/** For resource extensions written in xquery. */
+		XQUERY,
+		/** For resource extensions written in javascript. */
+		JAVASCRIPT;
+	}
+	/** Convenience constant to provide something shorter than ExtensionMetadata.ScriptLanguage.XQUERY */
+	public static final ScriptLanguage XQUERY = ScriptLanguage.XQUERY;
+	/** Convenience constant to provide something shorter than ExtensionMetadata.ScriptLanguage.JAVASCRIPT */
+	public static final ScriptLanguage JAVASCRIPT = ScriptLanguage.JAVASCRIPT;
+
 	private String title;
 	private String description;
 	private String provider;
 	private String version;
+	private ScriptLanguage scriptLanguage = XQUERY;
 
 	/**
 	 * Zero-argument constructor.
@@ -95,6 +110,22 @@ public void setVersion(String version) {
     	this.version = version;
     }
 
+	/**
+	 * Returns the script language for this resource extension, either XQUERY (default)
+	 * or JAVASCRIPT.
+	 */
+    public ScriptLanguage getScriptLanguage() {
+        return scriptLanguage;
+    }
+
+	/**
+	 * Specifies the script language for this resource extension, either XQUERY (default)
+	 * or JAVASCRIPT.
+	 */
+    public void setScriptLanguage(ScriptLanguage scriptLanguage) {
+        this.scriptLanguage = scriptLanguage;
+    }
+
     /**
      * Constructs request parameters expressing the extension metadata.
      * 
@@ -114,4 +145,4 @@ public RequestParameters asParameters() {
     		params.put("version",     version);
     	return params;
 	}
-}
+}