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entc/gen: move node creation to sqlgraph

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This commit is contained in:
Ariel Mashraki
2019-12-16 16:55:20 +02:00
parent 5e9d13be97
commit c6800a3869
71 changed files with 2524 additions and 1838 deletions
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4
examples/o2orecur/ent/ent.go
View File

@@ -13,6 +13,7 @@ import (
"github.com/facebookincubator/ent/dialect"
"github.com/facebookincubator/ent/dialect/sql"
"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
)
// Order applies an ordering on either graph traversal or sql selector.
@@ -159,6 +160,9 @@ func isSQLConstraintError(err error) (*ErrConstraintFailed, bool) {
"duplicate key value violates unique constraint", // PostgreSQL.
}
)
if _, ok := err.(*sqlgraph.ConstraintError); ok {
return &ErrConstraintFailed{msg, err}, true
}
for i := range errors {
if strings.Contains(msg, errors[i]) {
return &ErrConstraintFailed{msg, err}, true

103
examples/o2orecur/ent/node_create.go
View File

@@ -9,10 +9,10 @@ package ent
import (
"context"
"errors"
"fmt"
"github.com/facebookincubator/ent/dialect/sql"
"github.com/facebookincubator/ent/dialect/sql/sqlgraph"
"github.com/facebookincubator/ent/examples/o2orecur/ent/node"
"github.com/facebookincubator/ent/schema/field"
)
// NodeCreate is the builder for creating a Node entity.
@@ -98,61 +98,70 @@ func (nc *NodeCreate) SaveX(ctx context.Context) *Node {
func (nc *NodeCreate) sqlSave(ctx context.Context) (*Node, error) {
var (
res sql.Result
builder = sql.Dialect(nc.driver.Dialect())
n = &Node{config: nc.config}
n = &Node{config: nc.config}
spec = &sqlgraph.CreateSpec{
Table: node.Table,
ID: &sqlgraph.FieldSpec{
Type: field.TypeInt,
Column: node.FieldID,
},
}
)
tx, err := nc.driver.Tx(ctx)
if err != nil {
return nil, err
}
insert := builder.Insert(node.Table).Default()
if value := nc.value; value != nil {
insert.Set(node.FieldValue, *value)
spec.Fields = append(spec.Fields, &sqlgraph.FieldSpec{
Type: field.TypeInt,
Value: *value,
Column: node.FieldValue,
})
n.Value = *value
}
id, err := insertLastID(ctx, tx, insert.Returning(node.FieldID))
if err != nil {
return nil, rollback(tx, err)
if nodes := nc.prev; len(nodes) > 0 {
edge := &sqlgraph.EdgeSpec{
Rel: sqlgraph.O2O,
Inverse: true,
Table: node.PrevTable,
Columns: []string{node.PrevColumn},
Bidi: false,
Target: &sqlgraph.EdgeTarget{
IDSpec: &sqlgraph.FieldSpec{
Type: field.TypeInt,
Column: node.FieldID,
},
},
}
for k, _ := range nodes {
edge.Target.Nodes = append(edge.Target.Nodes, k)
}
spec.Edges = append(spec.Edges, edge)
}
n.ID = int(id)
if len(nc.prev) > 0 {
eid := keys(nc.prev)[0]
query, args := builder.Update(node.PrevTable).
Set(node.PrevColumn, eid).
Where(sql.EQ(node.FieldID, id).And().IsNull(node.PrevColumn)).
Query()
if err := tx.Exec(ctx, query, args, &res); err != nil {
return nil, rollback(tx, err)
if nodes := nc.next; len(nodes) > 0 {
edge := &sqlgraph.EdgeSpec{
Rel: sqlgraph.O2O,
Inverse: false,
Table: node.NextTable,
Columns: []string{node.NextColumn},
Bidi: false,
Target: &sqlgraph.EdgeTarget{
IDSpec: &sqlgraph.FieldSpec{
Type: field.TypeInt,
Column: node.FieldID,
},
},
}
affected, err := res.RowsAffected()
if err != nil {
return nil, rollback(tx, err)
}
if int(affected) < len(nc.prev) {
return nil, rollback(tx, &ErrConstraintFailed{msg: fmt.Sprintf("one of \"prev\" %v already connected to a different \"Node\"", keys(nc.prev))})
for k, _ := range nodes {
edge.Target.Nodes = append(edge.Target.Nodes, k)
}
spec.Edges = append(spec.Edges, edge)
}
if len(nc.next) > 0 {
eid := keys(nc.next)[0]
query, args := builder.Update(node.NextTable).
Set(node.NextColumn, id).
Where(sql.EQ(node.FieldID, eid).And().IsNull(node.NextColumn)).
Query()
if err := tx.Exec(ctx, query, args, &res); err != nil {
return nil, rollback(tx, err)
if err := sqlgraph.CreateNode(ctx, nc.driver, spec); err != nil {
if cerr, ok := isSQLConstraintError(err); ok {
err = cerr
}
affected, err := res.RowsAffected()
if err != nil {
return nil, rollback(tx, err)
}
if int(affected) < len(nc.next) {
return nil, rollback(tx, &ErrConstraintFailed{msg: fmt.Sprintf("one of \"next\" %v already connected to a different \"Node\"", keys(nc.next))})
}
}
if err := tx.Commit(); err != nil {
return nil, err
}
id := spec.ID.Value.(int64)
n.ID = int(id)
return n, nil
}