28 lines
936 B
Go
28 lines
936 B
Go
package jet
|
|
|
|
// Projection is interface for all projection types. Types that can be part of, for instance SELECT clause.
|
|
type Projection interface {
|
|
serializeForProjection(statement StatementType, out *SqlBuilder)
|
|
fromImpl(subQuery SelectTable) Projection
|
|
}
|
|
|
|
func SerializeForProjection(projection Projection, statementType StatementType, out *SqlBuilder) {
|
|
projection.serializeForProjection(statementType, out)
|
|
}
|
|
|
|
// ProjectionList is a redefined type, so that ProjectionList can be used as a Projection.
|
|
type ProjectionList []Projection
|
|
|
|
func (cl ProjectionList) fromImpl(subQuery SelectTable) Projection {
|
|
newProjectionList := ProjectionList{}
|
|
|
|
for _, projection := range cl {
|
|
newProjectionList = append(newProjectionList, projection.fromImpl(subQuery))
|
|
}
|
|
|
|
return newProjectionList
|
|
}
|
|
|
|
func (cl ProjectionList) serializeForProjection(statement StatementType, out *SqlBuilder) {
|
|
SerializeProjectionList(statement, cl, out)
|
|
}
|