neo4j_http_client

Description:

neo4j http client

Neo4j HTTP API Client #
A Dart/Flutter library for interacting with the Neo4j HTTP API.
This library allows you to use the Neo4j HTTP API to interact with a Neo4j database. It supports Neo4j v5. More information about the HTTP API can be found in the official documentation.
Features #

Discovery API
Query execution
Transactions
Authentication and authorization

Installation #
Flutter #
flutter pub add neo4j_http_client
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Dart #
dart pub add neo4j_http_client
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Usage #
Connecting and sending a single query #
import 'package:neo4j_http_client/neo4j_http_client.dart';

final client = Client(
url: Uri.parse('http://localhost:7474/db/data'),
database: 'test',
username: 'username',
password: 'password',
);

final query = Query('MATCH (n) RETURN n LIMIT 10');
final response = await client.execute([query]);
client.close();

print(response.results);
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Sending multiple queries #
import 'package:neo4j_http_client/neo4j_http_client.dart';

final client = Client(
url: Uri.parse('http://localhost:7474/db/data'),
database: 'test',
username: 'username',
password: 'password',
);

final query = Query.fromMap({
'MATCH (n) RETURN n LIMIT $limit': {'limit': 5},
'MATCH (n) RETURN n SKIP $skip LIMIT $limit': {'skip': 5, 'limit': 5},
});
final response = await client.execute([query]);
client.close();

print(response.results);
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Transaction #
import 'package:neo4j_http_client/neo4j_http_client.dart';

final client = Client(
url: Uri.parse('http://localhost:7474/db/data'),
database: 'test',
username: 'username',
password: 'password',
);

final transaction = await client.beginTransaction();
final query = Query('CREATE (n:Person {name: "John"}) RETURN n');
await transaction.execute([query]);

// Commit the transaction
await transaction.commit();

// Or rollback the transaction
// await transaction.rollback();

client.close();
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Fetching data and converting it to a list of records #
You can use the toRecords() method on a Result instance to convert the fetched data into a list of records, where each record is a Map<String, dynamic> with column names as keys and corresponding values.
final query = Query('MATCH (n:Person {name: "Alice"}) RETURN n');
final response = await client.execute([query]);
client.close();
final result = response.results.first;

// Convert the result to a list of records
final records = result.toRecords();
for (final record in records) {
final node = record['n'];
print('Name: ${node['name']}, Age: ${node['age']}');
}
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The records variable will contain data in the following format:
[
{'n': {'name': 'Alice', 'age': 30}},
// ...
]
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In this example, the key n is derived from the query's RETURN n statement. This makes it easier to work with the fetched data in your application.
TODO #

USING PERIODIC COMMIT
Include query statistics
Return results in graph format

License #
This library is licensed under the Apache License 2.0.
Author #
SUZUKI Tetsuya <tetsuya.suzuki at gmail.com>