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Add example code for using ResultSet Scan #303

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merged 2 commits into from
Jan 23, 2024
Merged

Add example code for using ResultSet Scan #303

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34024c5
Add example code for using ResultSet Scan
haoxins Jan 18, 2024
030c094
Merge branch 'master' into add-example
Nicole00 Jan 22, 2024
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12 changes: 11 additions & 1 deletion examples/session_pool_example/session_pool_example.go
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,12 @@ const (
// Initialize logger
var log = nebula.DefaultLogger{}

type Person struct {
Name string `nebula:"name"`
Age int `nebula:"age"`
Likeness float64 `nebula:"likeness"`
}

func main() {
prepareSpace()
hostAddress := nebula.HostAddress{Host: address, Port: port}
Expand Down Expand Up @@ -94,7 +100,7 @@ func main() {
}
// Extract data from the resultSet
{
query := "GO FROM 'Bob' OVER like YIELD $^.person.name, $^.person.age, like.likeness"
query := "GO FROM 'Bob' OVER like YIELD $^.person.name AS name, $^.person.age AS age, like.likeness AS likeness"
// Send query in goroutine
wg := sync.WaitGroup{}
wg.Add(1)
Expand All @@ -108,6 +114,10 @@ func main() {
return
}
checkResultSet(query, resultSet)
var personList []Person
resultSet.Scan(&personList)
fmt.Printf("personList: %v\n", personList)
// personList: [{Bob 10 97.2} {Bob 10 80} {Bob 10 70}]
}(&wg)
wg.Wait()

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4 changes: 4 additions & 0 deletions result_set.go
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Expand Up @@ -357,8 +357,12 @@ func (res ResultSet) scanRow(row *nebula.Row, colNames []string, t reflect.Type)
rowVal := rowVals[cIdx]

switch f.Type.Kind() {
case reflect.Int:
val.Field(fIdx).SetInt(rowVal.GetIVal())
case reflect.Int64:
val.Field(fIdx).SetInt(rowVal.GetIVal())
case reflect.Float64:
val.Field(fIdx).SetFloat(rowVal.GetFVal())
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don't we need to process bool/float32/int8/int16/date/datetime/time/duration/?

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we need, but I will open another PR to do this.
Also we need enhance/refactor the tests.
this is just make the example works.

case reflect.String:
val.Field(fIdx).SetString(string(rowVal.GetSVal()))
default:
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