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Query assets with pagination functions of marbles02 and asset_transfer_ledger_chaincode chaincodes without ResponseMetadata fetchedRecordsCount and bookmark (#547)

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Signed-off-by: David Faulstich Diniz Reis <davidfdr@gmail.com>
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David Faulstich Diniz Reis 2021-11-25 12:51:51 -03:00 committed by GitHub
parent ce66638035
commit 7fd6edb662
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4 changed files with 32 additions and 11 deletions
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9
asset-transfer-ledger-queries/application-javascript/app.js
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@ -191,7 +191,14 @@ async function main() {
// Rich Query with Pagination (Only supported if CouchDB is used as state database)
console.log('\n--> Evaluate Transaction: QueryAssetsWithPagination, function returns "Tom" assets');
result = await contract.evaluateTransaction('QueryAssetsWithPagination', '{"selector":{"docType":"asset","owner":"Tom"}, "use_index":["_design/indexOwnerDoc", "indexOwner"]}', '3', '');
result = await contract.evaluateTransaction('QueryAssetsWithPagination', '{"selector":{"docType":"asset","owner":"Tom"}, "use_index":["_design/indexOwnerDoc", "indexOwner"]}', '1', '');
console.log(`*** Result: ${prettyJSONString(result.toString())}`);
// Recover the bookmark from previous query. Normally it will be inside a variable.
const resultJson = JSON.parse(result.toString());
console.log('\n--> Evaluate Transaction: QueryAssetsWithPagination, function returns "Tom" assets next page');
result = await contract.evaluateTransaction('QueryAssetsWithPagination', '{"selector":{"docType":"asset","owner":"Tom"}, "use_index":["_design/indexOwnerDoc", "indexOwner"]}', '1', resultJson.ResponseMetadata.Bookmark);
console.log(`*** Result: ${prettyJSONString(result.toString())}`);
console.log('\n--> Submit Transaction: TransferAssetByColor, transfer all yellow assets to new owner(Michel)');

1
asset-transfer-ledger-queries/application-javascript/package.json
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@ -10,6 +10,7 @@
"author": "Hyperledger",
"license": "Apache-2.0",
"scripts": {
"run": "node app.js",
"lint": "eslint *.js"
},
"dependencies": {

17
asset-transfer-ledger-queries/chaincode-javascript/lib/asset_transfer_ledger_chaincode.js
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@ -62,10 +62,10 @@
// curl -i -X POST -H "Content-Type: application/json" -d "{\"index\":{\"fields\":[{\"size\":\"desc\"},{\"docType\":\"desc\"},{\"owner\":\"desc\"}]},\"ddoc\":\"indexSizeSortDoc\", \"name\":\"indexSizeSortDesc\",\"type\":\"json\"}" http://hostname:port/myc1_assets/_index
// Rich Query with index design doc and index name specified (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":\"asset\",\"owner\":\"Tom\"}, \"use_index\":[\"_design/indexOwnerDoc\", \"indexOwner\"]}"]}'
// peer chaincode query -C CHANNEL_NAME -n ledger -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":\"asset\",\"owner\":\"Tom\"}, \"use_index\":[\"_design/indexOwnerDoc\", \"indexOwner\"]}"]}'
// Rich Query with index design doc specified only (Only supported if CouchDB is used as state database):
// peer chaincode query -C CHANNEL_NAME -n asset_transfer -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":{\"$eq\":\"asset\"},\"owner\":{\"$eq\":\"Tom\"},\"size\":{\"$gt\":0}},\"fields\":[\"docType\",\"owner\",\"size\"],\"sort\":[{\"size\":\"desc\"}],\"use_index\":\"_design/indexSizeSortDoc\"}"]}'
// peer chaincode query -C CHANNEL_NAME -n ledger -c '{"Args":["QueryAssets","{\"selector\":{\"docType\":{\"$eq\":\"asset\"},\"owner\":{\"$eq\":\"Tom\"},\"size\":{\"$gt\":0}},\"fields\":[\"docType\",\"owner\",\"size\"],\"sort\":[{\"size\":\"desc\"}],\"use_index\":\"_design/indexSizeSortDoc\"}"]}'
'use strict';
@ -262,12 +262,15 @@ class Chaincode extends Contract {
async GetAssetsByRangeWithPagination(ctx, startKey, endKey, pageSize, bookmark) {
const {iterator, metadata} = await ctx.stub.getStateByRangeWithPagination(startKey, endKey, pageSize, bookmark);
const results = await this._GetAllResults(iterator, false);
let results = {};
results.results = await this._GetAllResults(iterator, false);
results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count,
RecordsCount: metadata.fetchedRecordsCount,
Bookmark: metadata.bookmark,
};
return JSON.stringify(results);
}
@ -282,10 +285,12 @@ class Chaincode extends Contract {
async QueryAssetsWithPagination(ctx, queryString, pageSize, bookmark) {
const {iterator, metadata} = await ctx.stub.getQueryResultWithPagination(queryString, pageSize, bookmark);
const results = await this._GetAllResults(iterator, false);
let results = {};
results.results = await this._GetAllResults(iterator, false);
results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count,
RecordsCount: metadata.fetchedRecordsCount,
Bookmark: metadata.bookmark,
};

16
chaincode/marbles02/javascript/marbles_chaincode.js
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@ -440,12 +440,17 @@ let Chaincode = class {
const { iterator, metadata } = await stub.getStateByRangeWithPagination(startKey, endKey, pageSize, bookmark);
const getAllResults = thisClass['getAllResults'];
const results = await getAllResults(iterator, false);
let results = {};
results.results = await getAllResults(iterator, false);
// use RecordsCount and Bookmark to keep consistency with the go sample
results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count,
RecordsCount: metadata.fetchedRecordsCount,
Bookmark: metadata.bookmark,
};
return Buffer.from(JSON.stringify(results));
}
@ -467,10 +472,13 @@ let Chaincode = class {
const { iterator, metadata } = await stub.getQueryResultWithPagination(queryString, pageSize, bookmark);
const getAllResults = thisClass['getAllResults'];
const results = await getAllResults(iterator, false);
let results = {};
results.results = await getAllResults(iterator, false);
// use RecordsCount and Bookmark to keep consistency with the go sample
results.ResponseMetadata = {
RecordsCount: metadata.fetched_records_count,
RecordsCount: metadata.fetchedRecordsCount,
Bookmark: metadata.bookmark,
};