--- a/artifacts/src/main/java/de/intevation/artifacts/ArtifactDatabase.java	Fri May 27 08:47:31 2011 +0000
+++ b/artifacts/src/main/java/de/intevation/artifacts/ArtifactDatabase.java	Tue May 31 14:53:36 2011 +0000
@@ -129,6 +129,27 @@
     DeferredOutput out(String artifact, Document format, CallMeta callMeta)
         throws ArtifactDatabaseException;
 
+
+    /**
+     * Produces output for a given artifact identified by 'artifact' in
+     * a requested format 'format'. The writing of the data is done when
+     * the write() method of the returned DeferredOutput is called. This
+     * optimizes the out streaming of the data because the call can be
+     * deferred into to the calling context.
+     * @param artifact The identifier of the artifact.
+     * @param format The request format of the output.
+     * @param callMeta The meta information (language et. al.) of the output.
+     * @return The deferred output to be written later in the calling context.
+     * @throws ArtifactDatabaseException Thrown if something went wrong during
+     * producing the output.
+     */
+    DeferredOutput out(
+        String   artifact,
+        String   type,
+        Document format,
+        CallMeta callMeta)
+    throws ArtifactDatabaseException;
+
     /**
      * Produces an extenal represention of the artifact identified by
      * 'artifact' to be re-imported by #importArtifact(Document, CallMeta)
@@ -234,5 +255,9 @@
     DeferredOutput outCollection(String collectionId,
         Document format, CallMeta callMeta)
         throws ArtifactDatabaseException;
+
+    DeferredOutput outCollection(String collectionId, String type,
+        Document format, CallMeta callMeta)
+        throws ArtifactDatabaseException;
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :