Added mocks for all model types, added CollectionDataService

src/app/core/shared/item.model.ts

@@ -0,0 +1,38 @@
+import { inheritSerialization, autoserialize } from "cerialize";
+import { DSpaceObject } from "./dspace-object.model";
+import { Collection } from "./collection.model";
+
+@inheritSerialization(DSpaceObject)
+export class Item extends DSpaceObject {
+
+    /**
+     * A string representing the unique handle of this Item
+     */
+    @autoserialize
+    handle: string;
+
+    /**
+     * The Date of the last modification of this Item
+     */
+    lastModified: Date;
+
+    /**
+     * A boolean representing if this Item is currently archived or not
+     */
+    isArchived: boolean;
+
+    /**
+     * A boolean representing if this Item is currently withdrawn or not
+     */
+    isWithdrawn: boolean;
+
+    /**
+     * An array of Collections that are direct parents of this Item
+     */
+    parents: Array<Collection>;
+
+    /**
+     * The Collection that owns this Item
+     */
+    owner: Collection;
+}