Added mocks for all model types, added CollectionDataService

src/app/core/shared/dspace-object.model.ts

@@ -0,0 +1,67 @@
+import { autoserialize, autoserializeAs } from "cerialize";
+import { Metadatum } from "./metadatum.model"
+import { isEmpty, isNotEmpty } from "../../shared/empty.util";
+
+/**
+ * An abstract model class for a DSpaceObject.
+ */
+export abstract class DSpaceObject {
+
+    /**
+     * The identifier of this DSpaceObject
+     */
+    @autoserialize
+    id: string;
+
+    /**
+     * A string representing the kind of DSpaceObject, e.g. community, item, …
+     */
+    type: string;
+
+    /**
+     * The name for this DSpaceObject
+     */
+    @autoserialize
+    name: string;
+
+    /**
+     * An array containing all metadata of this DSpaceObject
+     */
+    @autoserializeAs(Metadatum)
+    metadata: Array<Metadatum>;
+
+    /**
+     * An array of DSpaceObjects that are direct parents of this DSpaceObject
+     */
+    parents: Array<DSpaceObject>;
+
+    /**
+     * The DSpaceObject that owns this DSpaceObject
+     */
+    owner: DSpaceObject;
+
+  /**
+   * Find a metadata field by key and language
+   *
+   * This method returns the value of the first element
+   * in the metadata array that matches the provided
+   * key and language
+   *
+   * @param key
+   * @param language
+   * @return string
+   */
+    findMetadata(key: string, language?: string): string {
+      const metadatum = this.metadata
+        .find((metadatum: Metadatum) => {
+          return metadatum.key === key &&
+            (isEmpty(language) || metadatum.language === language)
+        });
+      if (isNotEmpty(metadatum)) {
+        return metadatum.value;
+      }
+      else {
+        return undefined;
+      }
+    }
+}