@peerbit/document-index-simple

Documents

Distributed document store.

This store is built on top of the base store. This store allows for type-safe document storage and retrieval accross peers.

As of now, go through the tests for documentation on how to use the module.

Example

import { field, option, serialize, variant } from "@dao-xyz/borsh";
import { Program } from "@peerbit/program";
import { Peerbit } from "peerbit";
import {
	Documents,
	DocumentIndex,
	SearchRequest,
	StringMatch,
	StringMatchMethod,
	Results,
} from "@peerbit/document";


@variant("document")
class Document {
    @field({ type: "string" })
    id: string;

    @field({ type: option("string") })
    name?: string;

    @field({ type: option("u64") })
    number?: bigint;

    constructor(opts?: Document) {
        if (opts) {
            Object.assign(this, opts);
        }
    }
}

@variant("test_documents")
class TestStore extends Program {
    @field({ type: Documents })
    docs: Documents<Document>;

    constructor(properties?: { docs: Documents<Document> }) {
        super();
        if (properties) {
            this.docs = properties.docs;
        }
    }
    async open(): Promise<void> {
        await this.docs.open({ 
			type: Document, 
			index: {
				fields: (obj) => obj // here you can filter and transform what fields you want to index
			}})
    }
}

// later 

const peer = await Peerbit.create ({libp2p: your_libp2p_instance})
const store = peer.open(new TestStore());
console.log(store.address) /// this address can be opened by another peer 


// insert
let doc = new Document({
    id: "1",
    name: "hello world",
    number: 1n,
});
let doc2 = new Document({
    id: "2",
    name: "hello world",
    number: 2n,
});

let doc3 = new Document({
    id: "3",
    name: "foo",
    number: 3n,
});

await store.docs.put(doc);
await store.docs.put(doc2);
await store.docs.put(doc3);


// search for documents from another peer
const peer2 = await Peerbit.create ({libp2: another_libp2p_instance})
const store2 = peer2.open(store.address);

let responses: Document[] = await store2.docs.index.search(
    new SearchRequest({
        query: [
          new StringMatch({
                key: "name",
                value: "ello",
				method: StringMatchMethod.contains
            }),
        ],
    })
);
expect(responses]).to.have.length(2);
expect(responses.map((x) => x.value.id)).to.deep.equal(["1", "2"]);