add metadata filter

packages/components/nodes/vectorstores/Pinecone_Existing/Pinecone_Existing.ts

@@ -50,6 +50,13 @@ class Pinecone_Existing_VectorStores implements INode {
                 type: 'string',
                 placeholder: 'my-first-namespace',
                 optional: true
+            },
+            {
+                label: 'Pinecone Metadata Filter',
+                name: 'pineconeMetadataFilter',
+                type: 'json',
+                optional: true,
+                additionalParams: true
             }
         ]
         this.outputs = [
@@ -71,6 +78,8 @@ class Pinecone_Existing_VectorStores implements INode {
         const pineconeEnv = nodeData.inputs?.pineconeEnv as string
         const index = nodeData.inputs?.pineconeIndex as string
         const pineconeNamespace = nodeData.inputs?.pineconeNamespace as string
+        const pineconeMetadataFilter = nodeData.inputs?.pineconeMetadataFilter
+
         const embeddings = nodeData.inputs?.embeddings as Embeddings
         const output = nodeData.outputs?.output as string
 
@@ -87,6 +96,10 @@ class Pinecone_Existing_VectorStores implements INode {
         }
 
         if (pineconeNamespace) obj.namespace = pineconeNamespace
+        if (pineconeMetadataFilter) {
+            const metadatafilter = typeof pineconeMetadataFilter === 'object' ? pineconeMetadataFilter : JSON.parse(pineconeMetadataFilter)
+            obj.filter = metadatafilter
+        }
 
         const vectorStore = await PineconeStore.fromExistingIndex(embeddings, obj)