wehub-resource-sync
73 lines
3.2 KiB
Go
73 lines
3.2 KiB
Go
// Copyright 2026 Dolthub, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package information_schema
|
|
|
|
import (
|
|
"github.com/dolthub/go-mysql-server/sql"
|
|
"github.com/dolthub/go-mysql-server/sql/information_schema"
|
|
|
|
"github.com/dolthub/doltgresql/server/functions"
|
|
)
|
|
|
|
// ConstraintColumnUsageViewName is the name of the CONSTRAINT_COLUMN_USAGE view.
|
|
const ConstraintColumnUsageViewName = "constraint_column_usage"
|
|
|
|
// newConstraintColumnUsageView creates a new information_schema.CONSTRAINT_COLUMN_USAGE view.
|
|
func newConstraintColumnUsageView() *information_schema.InformationSchemaTable {
|
|
return &information_schema.InformationSchemaTable{
|
|
TableName: ConstraintColumnUsageViewName,
|
|
TableSchema: constraintColumnUsageSchema,
|
|
Reader: constraintColumnUsageRowIter,
|
|
}
|
|
}
|
|
|
|
// constraintColumnUsage is the schema for the information_schema.CONSTRAINT_COLUMN_USAGE view.
|
|
var constraintColumnUsageSchema = sql.Schema{
|
|
{Name: "table_catalog", Type: sql_identifier, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "table_schema", Type: sql_identifier, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "table_name", Type: sql_identifier, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "column_name", Type: character_data, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "constraint_catalog", Type: character_data, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "constraint_schema", Type: yes_or_no, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
{Name: "constraint_name", Type: yes_or_no, Default: nil, Nullable: true, Source: ConstraintColumnUsageViewName},
|
|
}
|
|
|
|
// constraintColumnUsageRowIter implements the sql.RowIter for the information_schema.CONSTRAINT_COLUMN_USAGE view.
|
|
func constraintColumnUsageRowIter(ctx *sql.Context, catalog sql.Catalog) (sql.RowIter, error) {
|
|
var rows []sql.Row
|
|
|
|
err := functions.IterateCurrentDatabase(ctx, functions.Callbacks{
|
|
Check: func(ctx *sql.Context, schema functions.ItemSchema, table functions.ItemTable, check functions.ItemCheck) (cont bool, err error) {
|
|
|
|
// TODO: Fill out the rest of the columns.
|
|
rows = append(rows, sql.Row{
|
|
schema.Item.Name(), // table_catalog
|
|
schema.Item.SchemaName(), // table_schema
|
|
table.Item.Name(), // table_name
|
|
nil, // column_name
|
|
nil, // constraint_catalog
|
|
nil, // constraint_schema
|
|
check.Item.Name, // constraint_name
|
|
})
|
|
return true, nil
|
|
},
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return sql.RowsToRowIter(rows...), nil
|
|
}
|