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🤖 Sandbox code update #4

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46 changes: 30 additions & 16 deletions code/go/example.go
View file Open in desktop
Original file line number Diff line number Diff line change
@@ -1,30 +1,32 @@
// go mod init main
// go run example.go
package main

import (
"fmt"
"github.com/neo4j/neo4j-go-driver/neo4j" //Go 1.8
"github.com/neo4j/neo4j-go-driver/v4/neo4j"
"io"
"reflect"
)

func main() {
s, err := runQuery("bolt://<HOST>:<BOLTPORT>", "<USERNAME>", "<PASSWORD>")
results, err := runQuery("bolt://<HOST>:<BOLTPORT>", "neo4j", "<USERNAME>", "<PASSWORD>")
if err != nil {
panic(err)
}
fmt.Println(s)
}
func runQuery(uri, username, password string) ([]string, error) {
configForNeo4j4 := func(conf *neo4j.Config) { conf.Encrypted = false }
driver, err := neo4j.NewDriver(uri, neo4j.BasicAuth(username, password, ""), configForNeo4j4)
if err != nil {
return nil, err
for _, result := range results {
fmt.Println(result)
}
defer driver.Close()
sessionConfig := neo4j.SessionConfig{AccessMode: neo4j.AccessModeRead, DatabaseName: "neo4j"}
session, err := driver.NewSession(sessionConfig)
}

func runQuery(uri, database, username, password string) (result []string, err error) {
driver, err := neo4j.NewDriver(uri, neo4j.BasicAuth(username, password, ""))
if err != nil {
return nil, err
}
defer session.Close()
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(
`
Expand All @@ -40,7 +42,7 @@ func runQuery(uri, username, password string) ([]string, error) {
for result.Next() {
value, found := result.Record().Get("person")
if found {
arr = append(arr, value.(string))
arr = append(arr, value.(string))
}
}
if err = result.Err(); err != nil {
Expand All @@ -51,5 +53,17 @@ func runQuery(uri, username, password string) ([]string, error) {
if err != nil {
return nil, err
}
return results.([]string), err
}
result = results.([]string)
return result, err
}

func handleClose(closer io.Closer, previousError error) error {
err := closer.Close()
if err == nil {
return previousError
}
if previousError == nil {
return err
}
return fmt.Errorf("%v closure error occurred:\n%s\ninitial error was:\n%w", reflect.TypeOf(closer), err.Error(), previousError)
}

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