From 3b63786ae09c43d486126c0d52bbfec34eb74e4f Mon Sep 17 00:00:00 2001
From: Ruben Verborgh <ruben@verborgh.org>
Date: Tue, 5 Jan 2021 22:47:23 +0100
Subject: [PATCH] feat: Allow querying metadata.

---
 src/ldp/representation/RepresentationMetadata.ts      | 11 ++++++++---
 .../ldp/representation/RepresentationMetadata.test.ts |  5 +++++
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/ldp/representation/RepresentationMetadata.ts b/src/ldp/representation/RepresentationMetadata.ts
index 890663116..249aad9a6 100644
--- a/src/ldp/representation/RepresentationMetadata.ts
+++ b/src/ldp/representation/RepresentationMetadata.ts
@@ -86,10 +86,15 @@ export class RepresentationMetadata {
   }
 
   /**
-   * @returns All metadata quads.
+   * @returns All matching metadata quads.
    */
-  public quads(): Quad[] {
-    return this.store.getQuads(null, null, null, null);
+  public quads(
+    subject: Term | null = null,
+    predicate: Term | null = null,
+    object: Term | null = null,
+    graph: Term | null = null,
+  ): Quad[] {
+    return this.store.getQuads(subject, predicate, object, graph);
   }
 
   /**
diff --git a/test/unit/ldp/representation/RepresentationMetadata.test.ts b/test/unit/ldp/representation/RepresentationMetadata.test.ts
index 9d87e35e8..a20d82d12 100644
--- a/test/unit/ldp/representation/RepresentationMetadata.test.ts
+++ b/test/unit/ldp/representation/RepresentationMetadata.test.ts
@@ -75,6 +75,11 @@ describe('A RepresentationMetadata', (): void => {
       expect(metadata.quads()).toBeRdfIsomorphic(inputQuads);
     });
 
+    it('can query quads.', async(): Promise<void> => {
+      expect(metadata.quads(null, namedNode('has'), null)).toHaveLength(3);
+      expect(metadata.quads(null, null, literal('otherData'))).toHaveLength(2);
+    });
+
     it('can change the stored identifier.', async(): Promise<void> => {
       const newIdentifier = namedNode('newNode');
       metadata.identifier = newIdentifier;