Look up any git commit

In preparation for #167 so we can build raw URIs (Really the datamodel
is upside-down to support that at the moment)

Should probably return a Stream rather than a List for effiency (later
we'll just pick the first one that has the commit).

also.. is it possible to return the RetrievedFrom object instead of
Workflow?

Author: stain

src/main/java/org/commonwl/view/workflow/WorkflowRepository.java

@@ -19,14 +19,14 @@
 
 package org.commonwl.view.workflow;
 
+import java.util.List;
+
 import org.commonwl.view.git.GitDetails;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.mongodb.repository.Query;
 import org.springframework.data.repository.PagingAndSortingRepository;
 
-import java.util.List;
-
 /**
  * Stores and retrieved workflow objects from the database
  *
@@ -51,9 +51,21 @@ public interface WorkflowRepository extends PagingAndSortingRepository<Workflow,
     @Query("{\"lastCommit\": ?0, \"retrievedFrom.path\": ?1}")
     List<Workflow> findByCommitAndPath(String commitId, String path);
 
+    /**
+     * Find all known workflow models in the database for a commit ID
+     * 
+     * @param commitId
+     *            The latest commit ID of the workflow
+     * @return The workflow model
+     */
+    @Query("{\"lastCommit\": ?0}")
+    List<Workflow> findByCommit(String commitId);
+
     /**
      * Paged request to get workflows of a specific status
-     * @param pageable The details of the page to be retrieved
+     * 
+     * @param pageable
+     *            The details of the page to be retrieved
      * @return The requested page of workflows
      */
     Page<Workflow> findAllByOrderByRetrievedOnDesc(Pageable pageable);