vitess.io/vitess@v0.16.2/go/vt/vtgate/planbuilder/operators/delete.go (about)

     1  /*
     2  Copyright 2022 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package operators
    18  
    19  import (
    20  	"vitess.io/vitess/go/vt/sqlparser"
    21  	"vitess.io/vitess/go/vt/vtgate/planbuilder/operators/ops"
    22  	"vitess.io/vitess/go/vt/vtgate/semantics"
    23  	"vitess.io/vitess/go/vt/vtgate/vindexes"
    24  )
    25  
    26  type Delete struct {
    27  	QTable           *QueryTable
    28  	VTable           *vindexes.Table
    29  	OwnedVindexQuery string
    30  	AST              *sqlparser.Delete
    31  
    32  	noInputs
    33  	noColumns
    34  	noPredicates
    35  }
    36  
    37  var _ ops.PhysicalOperator = (*Delete)(nil)
    38  
    39  // Introduces implements the PhysicalOperator interface
    40  func (d *Delete) Introduces() semantics.TableSet {
    41  	return d.QTable.ID
    42  }
    43  
    44  // IPhysical implements the PhysicalOperator interface
    45  func (d *Delete) IPhysical() {}
    46  
    47  // Clone implements the Operator interface
    48  func (d *Delete) Clone(inputs []ops.Operator) ops.Operator {
    49  	return &Delete{
    50  		QTable:           d.QTable,
    51  		VTable:           d.VTable,
    52  		OwnedVindexQuery: d.OwnedVindexQuery,
    53  		AST:              d.AST,
    54  	}
    55  }
    56  
    57  func (d *Delete) TablesUsed() []string {
    58  	if d.VTable != nil {
    59  		return SingleQualifiedIdentifier(d.VTable.Keyspace, d.VTable.Name)
    60  	}
    61  	return nil
    62  }