Split packages into platform and extensions

platform/core/src/classes/StudyMetadataSource.js

@@ -0,0 +1,32 @@
+import OHIFError from './OHIFError';
+
+/**
+ * Abstract class to fetch study metadata.
+ */
+export class StudyMetadataSource {
+  /**
+   * Get study metadata for a study with given study InstanceUID.
+   * @param {String} studyInstanceUID Study InstanceUID.
+   */
+  getByInstanceUID(studyInstanceUID) {
+    /**
+     * Please override this method on a specialized class.
+     */
+    throw new OHIFError(
+      'StudyMetadataSource::getByInstanceUID is not overriden. Please, override it in a specialized class. See OHIFStudyMetadataSource for example'
+    );
+  }
+
+  /**
+   * Load study info and study metadata for a given study into the viewer.
+   * @param {StudySummary|StudyMetadata} study of StudySummary or StudyMetadata object.
+   */
+  loadStudy(study) {
+    /**
+     * Please override this method on a specialized class.
+     */
+    throw new OHIFError(
+      'StudyMetadataSource::loadStudy is not overriden. Please, override it in a specialized class. See OHIFStudyMetadataSource for example'
+    );
+  }
+}