github.com/matrixorigin/matrixone@v0.7.0/pkg/vm/engine/tae/moengine/sys_relation.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package moengine
    16  
    17  import (
    18  	"context"
    19  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/containers"
    20  
    21  	pkgcatalog "github.com/matrixorigin/matrixone/pkg/catalog"
    22  	"github.com/matrixorigin/matrixone/pkg/container/batch"
    23  	"github.com/matrixorigin/matrixone/pkg/container/vector"
    24  	"github.com/matrixorigin/matrixone/pkg/vm/engine"
    25  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/catalog"
    26  	"github.com/matrixorigin/matrixone/pkg/vm/engine/tae/iface/handle"
    27  )
    28  
    29  var (
    30  	_ engine.Relation = (*sysRelation)(nil)
    31  )
    32  
    33  func newSysRelation(h handle.Relation) *sysRelation {
    34  	r := &sysRelation{}
    35  	r.handle = h
    36  	r.nodes = append(r.nodes, engine.Node{
    37  		Addr: ADDR,
    38  	})
    39  	return r
    40  }
    41  
    42  func isSysRelation(name string) bool {
    43  	if name == pkgcatalog.MO_DATABASE ||
    44  		name == pkgcatalog.MO_TABLES ||
    45  		name == pkgcatalog.MO_COLUMNS {
    46  		return true
    47  	}
    48  	return false
    49  }
    50  
    51  func isSysRelationId(id uint64) bool {
    52  	if id == pkgcatalog.MO_DATABASE_ID ||
    53  		id == pkgcatalog.MO_TABLES_ID ||
    54  		id == pkgcatalog.MO_COLUMNS_ID {
    55  		return true
    56  	}
    57  	return false
    58  }
    59  
    60  func (s *sysRelation) Write(_ context.Context, _ *batch.Batch) error {
    61  	return ErrReadOnly
    62  }
    63  
    64  func (s *sysRelation) AddBlksWithMetaLoc(
    65  	_ context.Context,
    66  	_ []containers.Vector,
    67  	_ string,
    68  	_ []string,
    69  	_ int32,
    70  ) error {
    71  	return ErrReadOnly
    72  }
    73  
    74  func (s *sysRelation) Update(_ context.Context, _ *batch.Batch) error {
    75  	return ErrReadOnly
    76  }
    77  
    78  func (s *sysRelation) Delete(_ context.Context, _ *batch.Batch, _ string) error {
    79  	return ErrReadOnly
    80  }
    81  
    82  func (s *sysRelation) DeleteByPhyAddrKeys(_ context.Context, _ *vector.Vector) error {
    83  	return ErrReadOnly
    84  }
    85  
    86  func (s *sysRelation) UpdateConstraint(context.Context, *engine.ConstraintDef) error {
    87  	return ErrReadOnly
    88  }
    89  
    90  func (s *sysRelation) UpdateConstraintWithBin(context.Context, []byte) error {
    91  	return ErrReadOnly
    92  }
    93  
    94  func (s *sysRelation) TableColumns(_ context.Context) ([]*engine.Attribute, error) {
    95  	colDefs := s.handle.GetMeta().(*catalog.TableEntry).GetSchema().ColDefs
    96  	cols, _ := ColDefsToAttrs(colDefs)
    97  	return cols, nil
    98  }