forked from mirror/gorm
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package clause
|
|
|
|
type OnConflict struct {
|
|
Columns []Column
|
|
Where Where
|
|
OnConstraint string
|
|
DoNothing bool
|
|
DoUpdates Set
|
|
UpdateAll bool
|
|
}
|
|
|
|
func (OnConflict) Name() string {
|
|
return "ON CONFLICT"
|
|
}
|
|
|
|
// Build build onConflict clause
|
|
func (onConflict OnConflict) Build(builder Builder) {
|
|
if len(onConflict.Columns) > 0 {
|
|
builder.WriteByte('(')
|
|
for idx, column := range onConflict.Columns {
|
|
if idx > 0 {
|
|
builder.WriteByte(',')
|
|
}
|
|
builder.WriteQuoted(column)
|
|
}
|
|
builder.WriteString(`) `)
|
|
}
|
|
|
|
if len(onConflict.Where.Exprs) > 0 {
|
|
builder.WriteString("WHERE ")
|
|
onConflict.Where.Build(builder)
|
|
builder.WriteByte(' ')
|
|
}
|
|
|
|
if onConflict.OnConstraint != "" {
|
|
builder.WriteString("ON CONSTRAINT ")
|
|
builder.WriteString(onConflict.OnConstraint)
|
|
builder.WriteByte(' ')
|
|
}
|
|
|
|
if onConflict.DoNothing {
|
|
builder.WriteString("DO NOTHING")
|
|
} else {
|
|
builder.WriteString("DO UPDATE SET ")
|
|
onConflict.DoUpdates.Build(builder)
|
|
}
|
|
}
|
|
|
|
// MergeClause merge onConflict clauses
|
|
func (onConflict OnConflict) MergeClause(clause *Clause) {
|
|
clause.Expression = onConflict
|
|
}
|