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* enh: basic ORM library * fix lint * fix lint: consistency * fix: slice lengths
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package orm | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/neo4j/neo4j-go-driver/v5/neo4j" | ||
| ) | ||
|
|
||
| // CreateNode creates nodes in Neo4j | ||
| func CreateNodes(session neo4j.SessionWithContext, labels []string, properties *[]map[string]interface{}) ([]map[string]interface{}, error) { | ||
| ctx := context.TODO() | ||
| result, err := session.ExecuteWrite(ctx, func(tx neo4j.ManagedTransaction) (interface{}, error) { | ||
| createNodeQuery := fmt.Sprintf("UNWIND $propsList AS props CREATE (n:%s) SET n += props RETURN id(n) as id", labelString(labels)) | ||
| parameters := map[string]interface{}{"propsList": filteredProperties(properties)} | ||
| result, err := tx.Run(ctx, createNodeQuery, parameters) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return collectResults(result, ctx) | ||
| }) | ||
|
|
||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return result.([]map[string]interface{}), err | ||
| } | ||
|
|
||
| func filteredProperties(properties *[]map[string]interface{}) []map[string]interface{} { | ||
| filteredProperties := make([]map[string]interface{}, 0, len(*properties)) | ||
| for _, props := range *properties { | ||
| filteredProp := make(map[string]interface{}, len(props)) | ||
| for key, value := range props { | ||
| if isPrimitive(value) { | ||
| filteredProp[key] = value | ||
| } | ||
| } | ||
| filteredProperties = append(filteredProperties, filteredProp) | ||
| } | ||
| return filteredProperties | ||
| } | ||
|
|
||
| func collectResults(result neo4j.ResultWithContext, ctx context.Context) (results []map[string]interface{}, err error) { | ||
| if records, err := result.Collect(ctx); err == nil { | ||
| for _, k := range records { | ||
| results = append(results, k.AsMap()) | ||
| } | ||
| } else { | ||
| return nil, err | ||
| } | ||
| return results, result.Err() | ||
| } | ||
|
|
||
| // isPrimitive checks if a value is a primitive type | ||
| func isPrimitive(value interface{}) bool { | ||
| switch value.(type) { | ||
| case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, | ||
| float32, float64, string, bool: | ||
| return true | ||
| default: | ||
| return false | ||
| } | ||
| } | ||
|
|
||
| // labelString generates a string representation of labels for use in Cypher queries. | ||
| func labelString(labels []string) string { | ||
| return joinLabels(labels) | ||
| } | ||
|
|
||
| // joinLabels joins label strings with ":" separator. | ||
| func joinLabels(labels []string) string { | ||
| return strings.Join(labels, ":") | ||
| } |