diff --git a/.changeset/short-boats-confess.md b/.changeset/short-boats-confess.md
new file mode 100644
index 0000000000000000000000000000000000000000..ca16235328e8234eaa3bac3535dfa3a3e5ec3660
--- /dev/null
+++ b/.changeset/short-boats-confess.md
@@ -0,0 +1,5 @@
+---
+"llamaindex": patch
+---
+
+Fix persistence bug (thanks @HenryHengZJ)
diff --git a/apps/simple/persist.ts b/apps/simple/persist.ts
deleted file mode 100644
index 5412a48029f6777529432aa3830f0ea160315e8e..0000000000000000000000000000000000000000
--- a/apps/simple/persist.ts
+++ /dev/null
@@ -1,36 +0,0 @@
-import fs from "fs/promises";
-import {
- Document,
- VectorStoreIndex,
- storageContextFromDefaults,
-} from "llamaindex";
-
-async function main() {
- // Load essay from abramov.txt in Node
- const essay = await fs.readFile(
- "node_modules/llamaindex/examples/abramov.txt",
- "utf-8"
- );
-
- // Create Document object with essay
- const document = new Document({ text: essay });
-
- // Split text and create embeddings. Store them in a VectorStoreIndex with persistence
- const storageContext = await storageContextFromDefaults({
- persistDir: "./storage",
- });
- const index = await VectorStoreIndex.fromDocuments([document], {
- storageContext,
- });
-
- // Query the index
- const queryEngine = index.asQueryEngine();
- const response = await queryEngine.query(
- "What did the author do in college?"
- );
-
- // Output response
- console.log(response.toString());
-}
-
-main().catch(console.error);
diff --git a/apps/simple/storageContext.ts b/apps/simple/storageContext.ts
index 56be8010a6f67032b4cbe630e8fc5b9000c0b4ff..cb9c7102bc5be7486193978981e6e148e599af66 100644
--- a/apps/simple/storageContext.ts
+++ b/apps/simple/storageContext.ts
@@ -1,15 +1,22 @@
-import { Document, VectorStoreIndex, storageContextFromDefaults } from "llamaindex";
+import {
+ Document,
+ VectorStoreIndex,
+ storageContextFromDefaults,
+} from "llamaindex";
import essay from "./essay";
-
async function main() {
// Create Document object with essay
const document = new Document({ text: essay });
// Split text and create embeddings. Store them in a VectorStoreIndex
// persist the vector store automatically with the storage context
- const storageContext = await storageContextFromDefaults({ persistDir: "./storage" });
- const index = await VectorStoreIndex.fromDocuments([document], { storageContext });
+ const storageContext = await storageContextFromDefaults({
+ persistDir: "./storage",
+ });
+ const index = await VectorStoreIndex.fromDocuments([document], {
+ storageContext,
+ });
// Query the index
const queryEngine = index.asQueryEngine();
@@ -21,9 +28,14 @@ async function main() {
console.log(response.toString());
// load the index
- const loadedIndex = await VectorStoreIndex.init({ storageContext });
- const laodedQueryEngine = loadedIndex.asQueryEngine();
- const loadedResponse = await laodedQueryEngine.query(
+ const secondStorageContext = await storageContextFromDefaults({
+ persistDir: "./storage",
+ });
+ const loadedIndex = await VectorStoreIndex.init({
+ storageContext: secondStorageContext,
+ });
+ const loadedQueryEngine = loadedIndex.asQueryEngine();
+ const loadedResponse = await loadedQueryEngine.query(
"What did the author do growing up?"
);
console.log(loadedResponse.toString());
diff --git a/examples/storageContext.ts b/examples/storageContext.ts
index 56be8010a6f67032b4cbe630e8fc5b9000c0b4ff..cb9c7102bc5be7486193978981e6e148e599af66 100644
--- a/examples/storageContext.ts
+++ b/examples/storageContext.ts
@@ -1,15 +1,22 @@
-import { Document, VectorStoreIndex, storageContextFromDefaults } from "llamaindex";
+import {
+ Document,
+ VectorStoreIndex,
+ storageContextFromDefaults,
+} from "llamaindex";
import essay from "./essay";
-
async function main() {
// Create Document object with essay
const document = new Document({ text: essay });
// Split text and create embeddings. Store them in a VectorStoreIndex
// persist the vector store automatically with the storage context
- const storageContext = await storageContextFromDefaults({ persistDir: "./storage" });
- const index = await VectorStoreIndex.fromDocuments([document], { storageContext });
+ const storageContext = await storageContextFromDefaults({
+ persistDir: "./storage",
+ });
+ const index = await VectorStoreIndex.fromDocuments([document], {
+ storageContext,
+ });
// Query the index
const queryEngine = index.asQueryEngine();
@@ -21,9 +28,14 @@ async function main() {
console.log(response.toString());
// load the index
- const loadedIndex = await VectorStoreIndex.init({ storageContext });
- const laodedQueryEngine = loadedIndex.asQueryEngine();
- const loadedResponse = await laodedQueryEngine.query(
+ const secondStorageContext = await storageContextFromDefaults({
+ persistDir: "./storage",
+ });
+ const loadedIndex = await VectorStoreIndex.init({
+ storageContext: secondStorageContext,
+ });
+ const loadedQueryEngine = loadedIndex.asQueryEngine();
+ const loadedResponse = await loadedQueryEngine.query(
"What did the author do growing up?"
);
console.log(loadedResponse.toString());
diff --git a/packages/core/src/Node.ts b/packages/core/src/Node.ts
index abbc58a6d5f6bbf05a7532297827b54d8d4bdd83..a775990157bd3ebdaa73b88c80156cda33de060a 100644
--- a/packages/core/src/Node.ts
+++ b/packages/core/src/Node.ts
@@ -128,6 +128,14 @@ export abstract class BaseNode {
hash: this.hash,
};
}
+
+ /**
+ * Used with built in JSON.stringify
+ * @returns
+ */
+ toJSON(): Record<string, any> {
+ return { ...this, type: this.getType() };
+ }
}
/**
@@ -232,6 +240,23 @@ export class Document extends TextNode {
}
}
+export function jsonToNode(json: any) {
+ if (!json.type) {
+ throw new Error("Node type not found");
+ }
+
+ switch (json.type) {
+ case ObjectType.TEXT:
+ return new TextNode(json);
+ case ObjectType.INDEX:
+ return new IndexNode(json);
+ case ObjectType.DOCUMENT:
+ return new Document(json);
+ default:
+ throw new Error(`Invalid node type: ${json.type}`);
+ }
+}
+
// export class ImageDocument extends Document {
// image?: string;
// }
diff --git a/packages/core/src/indices/BaseIndex.ts b/packages/core/src/indices/BaseIndex.ts
index f19bfcc88d9dcdb0c5a111ef413e138855808113..27c4e17da3a3f4b64d8c936fbce2af031924687a 100644
--- a/packages/core/src/indices/BaseIndex.ts
+++ b/packages/core/src/indices/BaseIndex.ts
@@ -1,4 +1,4 @@
-import { Document, BaseNode } from "../Node";
+import { Document, BaseNode, jsonToNode } from "../Node";
import { v4 as uuidv4 } from "uuid";
import { BaseRetriever } from "../Retriever";
import { ServiceContext } from "../ServiceContext";
@@ -74,7 +74,12 @@ export function jsonToIndexStruct(json: any): IndexStruct {
return indexList;
} else if (json.type === IndexStructType.SIMPLE_DICT) {
const indexDict = new IndexDict(json.indexId, json.summary);
- indexDict.nodesDict = json.nodesDict;
+ indexDict.nodesDict = Object.entries(json.nodesDict).reduce<
+ Record<string, BaseNode>
+ >((acc, [key, value]) => {
+ acc[key] = jsonToNode(value);
+ return acc;
+ }, {});
return indexDict;
} else {
throw new Error(`Unknown index struct type: ${json.type}`);
diff --git a/packages/core/src/storage/constants.ts b/packages/core/src/storage/constants.ts
index a0ded7c10f1218b27e5f9ebb88e069c35a83dc8c..15e87613c7b89f84ab3380be0a3e5242d87da89f 100644
--- a/packages/core/src/storage/constants.ts
+++ b/packages/core/src/storage/constants.ts
@@ -1,7 +1,7 @@
export const DEFAULT_COLLECTION = "data";
export const DEFAULT_PERSIST_DIR = "./storage";
export const DEFAULT_INDEX_STORE_PERSIST_FILENAME = "index_store.json";
-export const DEFAULT_DOC_STORE_PERSIST_FILENAME = "docstore.json";
+export const DEFAULT_DOC_STORE_PERSIST_FILENAME = "doc_store.json";
export const DEFAULT_VECTOR_STORE_PERSIST_FILENAME = "vector_store.json";
export const DEFAULT_GRAPH_STORE_PERSIST_FILENAME = "graph_store.json";
export const DEFAULT_NAMESPACE = "docstore";