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Add support for conditional constructed projection list.

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go-jet 2019-12-14 19:11:35 +01:00
parent 74725e8e11
commit d2fbdb68e6
4 changed files with 72 additions and 0 deletions
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3
mysql/types.go
View file

@ -7,3 +7,6 @@ type Statement = jet.Statement
// Projection is interface for all projection types. Types that can be part of, for instance SELECT clause. // Projection is interface for all projection types. Types that can be part of, for instance SELECT clause.
type Projection = jet.Projection type Projection = jet.Projection
// ProjectionList can be used to create conditional constructed projection list.
type ProjectionList = jet.ProjectionList

3
postgres/types.go
View file

@ -7,3 +7,6 @@ type Statement = jet.Statement
// Projection is interface for all projection types. Types that can be part of, for instance SELECT clause. // Projection is interface for all projection types. Types that can be part of, for instance SELECT clause.
type Projection = jet.Projection type Projection = jet.Projection
// ProjectionList can be used to create conditional constructed projection list.
type ProjectionList = jet.ProjectionList

33
tests/mysql/select_test.go
View file

@ -708,3 +708,36 @@ func TestJoinViewWithTable(t *testing.T) {
assert.Equal(t, len(dest[0].Rentals), 32) assert.Equal(t, len(dest[0].Rentals), 32)
assert.Equal(t, len(dest[1].Rentals), 27) assert.Equal(t, len(dest[1].Rentals), 27)
} }
func TestConditionalProjectionList(t *testing.T) {
projectionList := ProjectionList{}
columnsToSelect := []string{"customer_id", "create_date"}
for _, columnName := range columnsToSelect {
switch columnName {
case Customer.CustomerID.Name():
projectionList = append(projectionList, Customer.CustomerID)
case Customer.Email.Name():
projectionList = append(projectionList, Customer.Email)
case Customer.CreateDate.Name():
projectionList = append(projectionList, Customer.CreateDate)
}
}
stmt := SELECT(projectionList).
FROM(Customer).
LIMIT(3)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT customer.customer_id AS "customer.customer_id",
customer.create_date AS "customer.create_date"
FROM dvds.customer
LIMIT 3;
`)
var dest []model.Customer
err := stmt.Query(db, &dest)
assert.NilError(t, err)
assert.Equal(t, len(dest), 3)
}

33
tests/postgres/select_test.go
View file

@ -1791,3 +1791,36 @@ func TestJoinViewWithTable(t *testing.T) {
assert.Equal(t, len(dest[0].Rentals), 32) assert.Equal(t, len(dest[0].Rentals), 32)
assert.Equal(t, len(dest[1].Rentals), 27) assert.Equal(t, len(dest[1].Rentals), 27)
} }
func TestConditionalProjectionList(t *testing.T) {
projectionList := ProjectionList{}
columnsToSelect := []string{"customer_id", "create_date"}
for _, columnName := range columnsToSelect {
switch columnName {
case Customer.CustomerID.Name():
projectionList = append(projectionList, Customer.CustomerID)
case Customer.Email.Name():
projectionList = append(projectionList, Customer.Email)
case Customer.CreateDate.Name():
projectionList = append(projectionList, Customer.CreateDate)
}
}
stmt := SELECT(projectionList).
FROM(Customer).
LIMIT(3)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT customer.customer_id AS "customer.customer_id",
customer.create_date AS "customer.create_date"
FROM dvds.customer
LIMIT 3;
`)
var dest []model.Customer
err := stmt.Query(db, &dest)
assert.NilError(t, err)
assert.Equal(t, len(dest), 3)
}