added primary decorator for the future

src/decorator/indices/CompositeIndex.ts

@@ -2,6 +2,8 @@ import {getMetadataArgsStorage} from "../../index";
 import {CompositeIndexOptions} from "../options/CompositeIndexOptions";
 import {IndexMetadataArgs} from "../../metadata-args/IndexMetadataArgs";
 
+// todo: maybe merge this with Index decorator?
+
 /**
  * Composite index must be set on entity classes and must specify entity's fields to be indexed.
  */

src/decorator/indices/Primary.ts

@@ -0,0 +1,18 @@
+// todo: create @Primary() that can also be simple and composite. multiple usages of @Primary means multiple keys should be used
+// todo: maybe also need to support using @Primary on classes
+// todo: @Primary() can be used with @Column, it will give same result as @PrimaryColumn
+// todo: also @Primary can be used on relations (manyToOne and oneToOne)
+// todo: it should be possible to make combinations of primary keys on columns and relational columns
+// todo: primary keys should be used on junction tables
+
+export function Primary() {
+    return function (object: Object, propertyName: string) {
+        /*const args: IndexMetadataArgs = {
+            name: name,
+            target: object.constructor,
+            columns: [propertyName],
+            unique: options && options.unique ? true : false
+        };
+        getMetadataArgsStorage().indices.add(args);*/
+    };
+}