fix #36; allow deleteAll() if we can't provide deleteAll(String... collections) since the REST API doesn't support that

Author: sammefford

src/main/java/com/marklogic/client/impl/PojoRepositoryImpl.java

@@ -124,12 +124,25 @@ public void delete(ID... ids) {
             docMgr.delete(createUri(id));
         }
     }
-    public void delete(String... collections) {
+    public void deleteAll() {
+        QueryManager queryMgr = client.newQueryManager();
+        DeleteQueryDefinition deleteQuery = queryMgr.newDeleteDefinition();
+        deleteQuery.setCollections(entityClass.getName());
+        queryMgr.delete(deleteQuery);
+    }
+    /* REST API does not currently support DELETE /search with multiple collection arguments
+    public void deleteAll(String... collections) {
+        if ( collections == null || collections.length == 0 ) {
+            throw new IllegalArgumentException("You must specify at least one collection");
+        } else if ( collections[0] == null ) {
+            throw new IllegalArgumentException("Collection argument must not be null");
+        }
         QueryManager queryMgr = client.newQueryManager();
         DeleteQueryDefinition deleteQuery = queryMgr.newDeleteDefinition();
         deleteQuery.setCollections(collections);
         queryMgr.delete((DeleteQueryDefinition) wrapQuery(deleteQuery));
     }
+    */
 
     public T read(ID id) {
         return read(id, null);

src/main/java/com/marklogic/client/pojo/PojoRepository.java

@@ -20,7 +20,10 @@ public interface PojoRepository<T, ID extends Serializable> {
     public long count(QueryDefinition query);
 
     public void delete(ID... ids);
-    public void delete(String... collections);
+    public void deleteAll();
+    /* REST API does not currently support DELETE /search with multiple collection arguments
+    public void deleteAll(String... collections);
+    */
 
     public T read(ID id);
     public T read(ID id, Transaction transaction);

src/test/java/com/marklogic/client/test/PojoFacadeTest.java

@@ -264,7 +264,7 @@ public void testE_DeletePojos() throws Exception {
         assertEquals("Failed to read number of records expected", 1, page.getTotalSize());
 
         // now delete them all
-        cities.delete((String)null);
+        cities.deleteAll();
         long count = cities.count();
         assertEquals("Failed to read number of records expected", 0, count);
     }