diff --git a/code/go/example.go b/code/go/example.go index aab89e1..13633cf 100644 --- a/code/go/example.go +++ b/code/go/example.go @@ -3,9 +3,9 @@ package main import ( + "context" "fmt" - "github.com/neo4j/neo4j-go-driver/v4/neo4j" - "io" + "github.com/neo4j/neo4j-go-driver/v5/neo4j" "reflect" ) @@ -19,46 +19,37 @@ func main() { } } -func runQuery(uri, database, username, password string) (result []string, err error) { - driver, err := neo4j.NewDriver(uri, neo4j.BasicAuth(username, password, "")) +func runQuery(uri, database, username, password string) (_ []string, err error) { + ctx := context.Background() + driver, err := neo4j.NewDriverWithContext(uri, neo4j.BasicAuth(username, password, "")) if err != nil { return nil, err } - defer func() {err = handleClose(driver, err)}() - session := driver.NewSession(neo4j.SessionConfig{AccessMode: neo4j.AccessModeRead, DatabaseName: database}) - defer func() {err = handleClose(session, err)}() - results, err := session.ReadTransaction(func(transaction neo4j.Transaction) (interface{}, error) { - result, err := transaction.Run( - ` - MATCH (a:Officer {name:$name})-[r:officer_of|intermediary_of|registered_address*..10]-(b) - RETURN b.name as name LIMIT 20 - `, map[string]interface{}{ - "name": "Ross, Jr. - Wilbur Louis", - }) + defer func() { err = handleClose(ctx, driver, err) }() + query := " MATCH (a:Officer {name:$name})-[r:officer_of|intermediary_of|registered_address*..10]-(b) + RETURN b.name as name LIMIT 20 + params := map[string]any{"name": "Ross, Jr. - Wilbur Louis"} + result, err := neo4j.ExecuteQuery(ctx, driver, query, params, + neo4j.EagerResultTransformer, + neo4j.ExecuteQueryWithDatabase(database), + neo4j.ExecuteQueryWithReadersRouting()) + if err != nil { + return nil, err + } + names := make([]string, len(result.Records)) + for i, record := range result.Records { + // this assumes all actors have names, hence ignoring the 2nd returned value + name, _, err := neo4j.GetRecordValue[string](record, "name") if err != nil { return nil, err } - var arr []string - for result.Next() { - value, found := result.Record().Get("name") - if found { - arr = append(arr, value.(string)) - } - } - if err = result.Err(); err != nil { - return nil, err - } - return arr, nil - }) - if err != nil { - return nil, err + names[i] = name } - result = results.([]string) - return result, err + return names, nil } -func handleClose(closer io.Closer, previousError error) error { - err := closer.Close() +func handleClose(ctx context.Context, closer interface{ Close(context.Context) error }, previousError error) error { + err := closer.Close(ctx) if err == nil { return previousError } diff --git a/code/graphql/example.js b/code/graphql/example.js index 7b69b9b..991ca09 100644 --- a/code/graphql/example.js +++ b/code/graphql/example.js @@ -45,6 +45,7 @@ type Other { valid_until: String! intermediary_of: [Entity] @relationship(type: "intermediary_of", direction: OUT) + same_name_as: [Entity] @relationship(type: "SAME_NAME_AS", direction: OUT) } type Intermediary { @@ -55,6 +56,7 @@ type Intermediary { sourceID: String! valid_until: String! connected_to: [Entity] @relationship(type: "connected_to", direction: OUT) + same_name_as: [Entity] @relationship(type: "SAME_NAME_AS", direction: OUT) } type Officer { @@ -69,6 +71,8 @@ type Officer { @relationship(type: "registered_address", direction: OUT) officer_of: [Entity] @relationship(type: "officer_of", direction: OUT) connected_to: [Entity] @relationship(type: "connected_to", direction: OUT) + same_name_as: [Entity] @relationship(type: "SAME_NAME_AS", direction: OUT) + same_id_as: [Officer] @relationship(type: "SAME_ID_AS", direction: OUT) num_of_connected_entities: Int @cypher( statement: """ diff --git a/code/javascript/example.js b/code/javascript/example.js index f771186..65c44b9 100644 --- a/code/javascript/example.js +++ b/code/javascript/example.js @@ -3,7 +3,7 @@ const neo4j = require('neo4j-driver'); const driver = neo4j.driver('neo4j://:', neo4j.auth.basic('', ''), - {/* encrypted: 'ENCRYPTION_OFF' */}); + {}); const query = ` diff --git a/code/python/example.py b/code/python/example.py index 9b0cb9b..8361dc8 100644 --- a/code/python/example.py +++ b/code/python/example.py @@ -1,22 +1,20 @@ -# pip3 install neo4j-driver +# pip3 install neo4j # python3 example.py from neo4j import GraphDatabase, basic_auth -driver = GraphDatabase.driver( - "neo4j://:", - auth=basic_auth("", "")) - cypher_query = ''' MATCH (a:Officer {name:$name})-[r:officer_of|intermediary_of|registered_address*..10]-(b) RETURN b.name as name LIMIT 20 ''' -with driver.session(database="neo4j") as session: - results = session.read_transaction( - lambda tx: tx.run(cypher_query, - name="Ross, Jr. - Wilbur Louis").data()) - for record in results: - print(record['name']) - -driver.close() +with GraphDatabase.driver( + "neo4j://:", + auth=("", "") +) as driver: + result = driver.execute_query( + cypher_query, + name="Ross, Jr. - Wilbur Louis", + database_="neo4j") + for record in result.records: + print(record['name'])