memoryengine

package
v0.7.0 Latest Latest
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 Go to latest Published: Feb 18, 2023 License: Apache-2.0 Imports: 34 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	OpCreateDatabase = iota + 64
	OpOpenDatabase
	OpGetDatabases
	OpDeleteDatabase
	OpCreateRelation
	OpDeleteRelation
	OpTruncateRelation
	OpOpenRelation
	OpGetRelations
	OpAddTableDef
	OpDelTableDef
	OpDelete
	OpGetPrimaryKeys
	OpGetTableColumns
	OpGetTableDefs
	OpGetHiddenKeys
	OpUpdate
	OpWrite
	OpNewTableIter
	OpRead
	OpCloseTableIter
	OpTableStats
	OpPreCommit  = uint32(apipb.OpCode_OpPreCommit)
	OpGetLogTail = uint32(apipb.OpCode_OpGetLogTail)
)

Variables

View Source 
var RandomIDGenerator = new(randomIDGenerator)

Functions

func DoTxnRequest 

func DoTxnRequest[
	Resp Response,
	Req Request,
](
	ctx context.Context,
	txnOperator client.TxnOperator,
	isRead bool,
	shardsFunc shardsFunc,
	op uint32,
	req Req,
) (
	resps []Resp,
	err error,
)

func GetClusterDetailsFromHAKeeper 

func GetClusterDetailsFromHAKeeper(
	ctx context.Context,
	client logservice.CNHAKeeperClient,
) (
	get engine.GetClusterDetailsFunc,
)

Types

type AccessInfo 

type AccessInfo struct {
	AccountID uint32
	UserID    uint32
	RoleID    uint32
}

type AddTableDefReq 

type AddTableDefReq struct {
	TableID ID
	Def     engine.TableDef

	DatabaseName string
	TableName    string
}

type AddTableDefResp 

type AddTableDefResp struct {
}

type BindedEngine 

type BindedEngine struct {
	// contains filtered or unexported fields
}

func (*BindedEngine) Commit 

func (b *BindedEngine) Commit(ctx context.Context, _ client.TxnOperator) error

func (*BindedEngine) Create 

func (b *BindedEngine) Create(ctx context.Context, databaseName string, _ client.TxnOperator) error

func (*BindedEngine) Database 

func (b *BindedEngine) Database(ctx context.Context, databaseName string, _ client.TxnOperator) (engine.Database, error)

func (*BindedEngine) Databases 

func (b *BindedEngine) Databases(ctx context.Context, _ client.TxnOperator) (databaseNames []string, err error)

func (*BindedEngine) Delete 

func (b *BindedEngine) Delete(ctx context.Context, databaseName string, _ client.TxnOperator) error

func (*BindedEngine) GetNameById added in v0.7.0 

func (b *BindedEngine) GetNameById(ctx context.Context, op client.TxnOperator, tableId uint64) (dbName string, tblName string, err error)

func (*BindedEngine) GetRelationById added in v0.7.0 

func (b *BindedEngine) GetRelationById(ctx context.Context, op client.TxnOperator, tableId uint64) (dbName string, tblName string, rel engine.Relation, err error)

func (*BindedEngine) Hints 

func (b *BindedEngine) Hints() engine.Hints

func (*BindedEngine) New 

func (b *BindedEngine) New(ctx context.Context, _ client.TxnOperator) error

func (*BindedEngine) NewBlockReader 

func (b *BindedEngine) NewBlockReader(_ context.Context, _ int, _ timestamp.Timestamp,
	_ *plan.Expr, _ [][]byte, _ *plan.TableDef) ([]engine.Reader, error)

func (*BindedEngine) Nodes 

func (b *BindedEngine) Nodes() (cnNodes engine.Nodes, err error)

func (*BindedEngine) Rollback 

func (b *BindedEngine) Rollback(ctx context.Context, _ client.TxnOperator) error

type CloseTableIterReq 

type CloseTableIterReq struct {
	IterID ID
}

type CloseTableIterResp 

type CloseTableIterResp struct {
}

type CompilerContext 

type CompilerContext struct {
	// contains filtered or unexported fields
}

func (*CompilerContext) DatabaseExists 

func (c *CompilerContext) DatabaseExists(name string) bool

func (*CompilerContext) DefaultDatabase 

func (c *CompilerContext) DefaultDatabase() string

func (*CompilerContext) GetAccountId 

func (c *CompilerContext) GetAccountId() uint32

func (*CompilerContext) GetBuildingAlterView added in v0.7.0 

func (c *CompilerContext) GetBuildingAlterView() (bool, string, string)

func (*CompilerContext) GetContext added in v0.7.0 

func (c *CompilerContext) GetContext() context.Context

func (*CompilerContext) GetHideKeyDef 

func (c *CompilerContext) GetHideKeyDef(dbName string, tableName string) *plan.ColDef

func (*CompilerContext) GetPrimaryKeyDef 

func (c *CompilerContext) GetPrimaryKeyDef(dbName string, tableName string) (defs []*plan.ColDef)

func (*CompilerContext) GetProcess added in v0.7.0 

func (c *CompilerContext) GetProcess() *process.Process

func (*CompilerContext) GetQueryResultMeta added in v0.7.0 

func (c *CompilerContext) GetQueryResultMeta(uuid string) ([]*plan.ColDef, string, error)

func (*CompilerContext) GetRootSql 

func (*CompilerContext) GetRootSql() string

func (*CompilerContext) GetUserName 

func (*CompilerContext) GetUserName() string

func (*CompilerContext) Resolve 

func (c *CompilerContext) Resolve(schemaName string, tableName string) (objRef *plan.ObjectRef, tableDef *plan.TableDef)

func (*CompilerContext) ResolveAccountIds added in v0.7.0 

func (c *CompilerContext) ResolveAccountIds(accountNames []string) ([]uint32, error)

func (*CompilerContext) ResolveById added in v0.7.0 

func (c *CompilerContext) ResolveById(tableId uint64) (objRef *plan.ObjectRef, tableDef *plan.TableDef)

func (*CompilerContext) ResolveVariable 

func (*CompilerContext) ResolveVariable(varName string, isSystemVar bool, isGlobalVar bool) (interface{}, error)

func (*CompilerContext) SetBuildingAlterView added in v0.7.0 

func (c *CompilerContext) SetBuildingAlterView(yesOrNo bool, dbName, viewName string)

func (*CompilerContext) Stats added in v0.7.0 

func (*CompilerContext) Stats(obj *plan.ObjectRef, e *plan.Expr) *plan.Stats

type CreateDatabaseReq 

type CreateDatabaseReq struct {
	ID         ID
	AccessInfo AccessInfo
	Name       string
}

type CreateDatabaseResp 

type CreateDatabaseResp struct {
	ID ID
}

type CreateRelationReq 

type CreateRelationReq struct {
	ID           ID
	DatabaseID   ID
	DatabaseName string
	Name         string
	Type         RelationType
	Defs         []engine.TableDef
}

type CreateRelationResp 

type CreateRelationResp struct {
	ID ID
}

type Database 

type Database struct {
	// contains filtered or unexported fields
}

func (*Database) Create 

func (d *Database) Create(ctx context.Context, relName string, defs []engine.TableDef) error

func (*Database) Delete 

func (d *Database) Delete(ctx context.Context, relName string) error

func (*Database) GetDatabaseId 

func (d *Database) GetDatabaseId(ctx context.Context) string

func (*Database) Relation 

func (d *Database) Relation(ctx context.Context, relName string) (engine.Relation, error)

func (*Database) Relations 

func (d *Database) Relations(ctx context.Context) ([]string, error)

func (*Database) Truncate 

func (d *Database) Truncate(ctx context.Context, relName string) (uint64, error)

type DelTableDefReq 

type DelTableDefReq struct {
	TableID      ID
	DatabaseName string
	TableName    string
	Def          engine.TableDef
}

type DelTableDefResp 

type DelTableDefResp struct {
}

type DeleteDatabaseReq 

type DeleteDatabaseReq struct {
	AccessInfo AccessInfo
	Name       string
}

type DeleteDatabaseResp 

type DeleteDatabaseResp struct {
	ID ID
}

type DeleteRelationReq 

type DeleteRelationReq struct {
	DatabaseID   ID
	DatabaseName string
	Name         string
}

type DeleteRelationResp 

type DeleteRelationResp struct {
	ID ID
}

type DeleteReq 

type DeleteReq struct {
	TableID      ID
	DatabaseName string
	TableName    string
	ColumnName   string
	Vector       *vector.Vector
}

type DeleteResp 

type DeleteResp struct {
}

type Engine 

type Engine struct {
	// contains filtered or unexported fields
}

Engine is an engine.Engine impl

func New 

func New(
	ctx context.Context,
	shardPolicy ShardPolicy,
	getClusterDetails engine.GetClusterDetailsFunc,
	idGenerator IDGenerator,
) *Engine

func (*Engine) Bind 

func (e *Engine) Bind(txnOp client.TxnOperator) *BindedEngine

func (*Engine) Commit 

func (e *Engine) Commit(_ context.Context, _ client.TxnOperator) error

func (*Engine) Create 

func (e *Engine) Create(ctx context.Context, dbName string, txnOperator client.TxnOperator) error

func (*Engine) Database 

func (e *Engine) Database(ctx context.Context, dbName string, txnOperator client.TxnOperator) (engine.Database, error)

func (*Engine) Databases 

func (e *Engine) Databases(ctx context.Context, txnOperator client.TxnOperator) ([]string, error)

func (*Engine) Delete 

func (e *Engine) Delete(ctx context.Context, dbName string, txnOperator client.TxnOperator) error

func (*Engine) GetNameById added in v0.7.0 

func (e *Engine) GetNameById(ctx context.Context, op client.TxnOperator, tableId uint64) (dbName string, tblName string, err error)

func (*Engine) GetRelationById added in v0.7.0 

func (e *Engine) GetRelationById(ctx context.Context, op client.TxnOperator, tableId uint64) (dbName string, tblName string, rel engine.Relation, err error)

func (*Engine) Hints 

func (e *Engine) Hints() (h engine.Hints)

func (*Engine) New 

func (e *Engine) New(_ context.Context, _ client.TxnOperator) error

func (*Engine) NewBlockReader 

func (e *Engine) NewBlockReader(_ context.Context, _ int, _ timestamp.Timestamp,
	_ *plan.Expr, _ [][]byte, _ *plan.TableDef) ([]engine.Reader, error)

func (*Engine) NewCompilerContext 

func (e *Engine) NewCompilerContext(
	ctx context.Context,
	defaultDB string,
	txnOp client.TxnOperator,
) *CompilerContext

func (*Engine) Nodes 

func (e *Engine) Nodes() (engine.Nodes, error)

func (*Engine) Rollback 

func (e *Engine) Rollback(_ context.Context, _ client.TxnOperator) error

type FallbackShard 

type FallbackShard []ShardPolicy

func (FallbackShard) Batch 

func (f FallbackShard) Batch(ctx context.Context, tableID ID, getDefs func(context.Context) ([]engine.TableDef, error), batch *batch.Batch, nodes []logservicepb.DNStore) (sharded []*ShardedBatch, err error)

func (FallbackShard) Vector 

func (f FallbackShard) Vector(ctx context.Context, tableID ID, getDefs func(context.Context) ([]engine.TableDef, error), colName string, vec *vector.Vector, nodes []logservicepb.DNStore) (sharded []*ShardedVector, err error)

type GetDatabasesReq 

type GetDatabasesReq struct {
	AccessInfo AccessInfo
}

type GetDatabasesResp 

type GetDatabasesResp struct {
	Names []string
}

type GetHiddenKeysReq 

type GetHiddenKeysReq struct {
	TableID ID
}

type GetHiddenKeysResp 

type GetHiddenKeysResp struct {
	Attrs []*engine.Attribute
}

type GetPrimaryKeysReq 

type GetPrimaryKeysReq struct {
	TableID ID
}

type GetPrimaryKeysResp 

type GetPrimaryKeysResp struct {
	Attrs []*engine.Attribute
}

type GetRelationsReq 

type GetRelationsReq struct {
	DatabaseID ID
}

type GetRelationsResp 

type GetRelationsResp struct {
	Names []string
}

type GetTableColumnsReq 

type GetTableColumnsReq struct {
	TableID ID
}

type GetTableColumnsResp 

type GetTableColumnsResp struct {
	Attrs []*engine.Attribute
}

type GetTableDefsReq 

type GetTableDefsReq struct {
	TableID ID
}

type GetTableDefsResp 

type GetTableDefsResp struct {
	Defs []engine.TableDef
}

type HakeeperIDGenerator 

type HakeeperIDGenerator struct {
	// contains filtered or unexported fields
}

func NewHakeeperIDGenerator 

func NewHakeeperIDGenerator(
	generator hakeeperIDGenerator,
) *HakeeperIDGenerator

func (*HakeeperIDGenerator) NewID 

func (h *HakeeperIDGenerator) NewID(ctx context.Context) (ID, error)

type HashShard 

type HashShard struct {
	// contains filtered or unexported fields
}

func NewHashShard 

func NewHashShard(mp *mpool.MPool) *HashShard

func (*HashShard) Batch 

func (*HashShard) Batch(
	ctx context.Context,
	tableID ID,
	getDefs getDefsFunc,
	bat *batch.Batch,
	nodes []logservicepb.DNStore,
) (
	sharded []*ShardedBatch,
	err error,
)

func (*HashShard) Vector 

func (h *HashShard) Vector(
	ctx context.Context,
	tableID ID,
	getDefs getDefsFunc,
	colName string,
	vec *vector.Vector,
	nodes []logservicepb.DNStore,
) (
	sharded []*ShardedVector,
	err error,
)

type ID 

type ID uint64

func (ID) IsEmpty 

func (i ID) IsEmpty() bool

func (ID) Less 

func (i ID) Less(than ID) bool

func (ID) ToRowID 

func (i ID) ToRowID() types.Rowid

type IDGenerator 

type IDGenerator interface {
	NewID(context.Context) (ID, error)
}

type IterInfo 

type IterInfo struct {
	Shard  Shard
	IterID ID
}

type NewTableIterReq 

type NewTableIterReq struct {
	TableID ID
	Expr    *plan.Expr
}

type NewTableIterResp 

type NewTableIterResp struct {
	IterID ID
}

type NoShard 

type NoShard struct {
	// contains filtered or unexported fields
}

NoShard doesn't do sharding at all

func (*NoShard) Batch 

func (s *NoShard) Batch(
	ctx context.Context,
	tableID ID,
	getDefs getDefsFunc,
	bat *batch.Batch,
	nodes []logservicepb.DNStore,
) (
	sharded []*ShardedBatch,
	err error,
)

func (*NoShard) Vector 

func (s *NoShard) Vector(
	ctx context.Context,
	tableID ID,
	getDefs getDefsFunc,
	colName string,
	vec *vector.Vector,
	nodes []logservicepb.DNStore,
) (
	sharded []*ShardedVector,
	err error,
)

type Nullable 

type Nullable struct {
	IsNull bool
	Value  any
}

type OpenDatabaseReq 

type OpenDatabaseReq struct {
	AccessInfo AccessInfo
	Name       string
}

type OpenDatabaseResp 

type OpenDatabaseResp struct {
	ID   ID
	Name string
}

type OpenRelationReq 

type OpenRelationReq struct {
	DatabaseID   ID
	DatabaseName string
	Name         string
}

type OpenRelationResp 

type OpenRelationResp struct {
	ID           ID
	Type         RelationType
	DatabaseName string
	RelationName string
}

type OperationHandler 

type OperationHandler interface {
	HandleOpenDatabase(
		ctx context.Context,
		meta txn.TxnMeta,
		req OpenDatabaseReq,
		resp *OpenDatabaseResp,
	) error

	HandleGetDatabases(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetDatabasesReq,
		resp *GetDatabasesResp,
	) error

	HandleOpenRelation(
		ctx context.Context,
		meta txn.TxnMeta,
		req OpenRelationReq,
		resp *OpenRelationResp,
	) error

	HandleGetRelations(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetRelationsReq,
		resp *GetRelationsResp,
	) error

	HandleGetPrimaryKeys(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetPrimaryKeysReq,
		resp *GetPrimaryKeysResp,
	) error

	HandleGetTableColumns(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetTableColumnsReq,
		resp *GetTableColumnsResp,
	) error

	HandleGetTableDefs(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetTableDefsReq,
		resp *GetTableDefsResp,
	) error

	HandleGetHiddenKeys(
		ctx context.Context,
		meta txn.TxnMeta,
		req GetHiddenKeysReq,
		resp *GetHiddenKeysResp,
	) error

	HandleNewTableIter(
		ctx context.Context,
		meta txn.TxnMeta,
		req NewTableIterReq,
		resp *NewTableIterResp,
	) error

	HandleRead(
		ctx context.Context,
		meta txn.TxnMeta,
		req ReadReq,
		resp *ReadResp,
	) error

	HandleCloseTableIter(
		ctx context.Context,
		meta txn.TxnMeta,
		req CloseTableIterReq,
		resp *CloseTableIterResp,
	) error

	HandleCreateDatabase(
		ctx context.Context,
		meta txn.TxnMeta,
		req CreateDatabaseReq,
		resp *CreateDatabaseResp,
	) error

	HandleDeleteDatabase(
		ctx context.Context,
		meta txn.TxnMeta,
		req DeleteDatabaseReq,
		resp *DeleteDatabaseResp,
	) error

	HandleCreateRelation(
		ctx context.Context,
		meta txn.TxnMeta,
		req CreateRelationReq,
		resp *CreateRelationResp,
	) error

	HandleDeleteRelation(
		ctx context.Context,
		meta txn.TxnMeta,
		req DeleteRelationReq,
		resp *DeleteRelationResp,
	) error

	HandleTruncateRelation(
		ctx context.Context,
		meta txn.TxnMeta,
		req TruncateRelationReq,
		resp *TruncateRelationResp,
	) error

	HandleAddTableDef(
		ctx context.Context,
		meta txn.TxnMeta,
		req AddTableDefReq,
		resp *AddTableDefResp,
	) error

	HandleDelTableDef(
		ctx context.Context,
		meta txn.TxnMeta,
		req DelTableDefReq,
		resp *DelTableDefResp,
	) error

	HandleDelete(
		ctx context.Context,
		meta txn.TxnMeta,
		req DeleteReq,
		resp *DeleteResp,
	) error

	HandleUpdate(
		ctx context.Context,
		meta txn.TxnMeta,
		req UpdateReq,
		resp *UpdateResp,
	) error

	HandleWrite(
		ctx context.Context,
		meta txn.TxnMeta,
		req WriteReq,
		resp *WriteResp,
	) error

	HandleTableStats(
		ctx context.Context,
		meta txn.TxnMeta,
		req TableStatsReq,
		resp *TableStatsResp,
	) error
}

type OperationHandlerProvider 

type OperationHandlerProvider interface {
	GetOperationHandler(shard Shard) (OperationHandler, txn.TxnMeta)
}

type ReadReq 

type ReadReq struct {
	IterID   ID
	ColNames []string
}

type ReadRequest 

type ReadRequest interface {
	OpenDatabaseReq |
		GetDatabasesReq |
		OpenRelationReq |
		GetRelationsReq |
		GetPrimaryKeysReq |
		GetTableColumnsReq |
		GetTableDefsReq |
		GetHiddenKeysReq |
		NewTableIterReq |
		ReadReq |
		CloseTableIterReq |
		TableStatsReq |
		apipb.SyncLogTailReq
}

type ReadResp 

type ReadResp struct {
	Batch *batch.Batch
	// contains filtered or unexported fields
}

func (*ReadResp) Close 

func (r *ReadResp) Close() error

func (*ReadResp) SetHeap 

func (r *ReadResp) SetHeap(mp *mpool.MPool)

type RelationType 

type RelationType uint8
const (
	RelationTable RelationType = iota + 1
	RelationView
)

type Request 

type Request interface {
	ReadRequest | WriteReqeust
}

type Response 

type Response interface {
	CreateDatabaseResp |
		OpenDatabaseResp |
		GetDatabasesResp |
		DeleteDatabaseResp |
		CreateRelationResp |
		DeleteRelationResp |
		TruncateRelationResp |
		OpenRelationResp |
		GetRelationsResp |
		AddTableDefResp |
		DelTableDefResp |
		DeleteResp |
		GetPrimaryKeysResp |
		GetTableColumnsResp |
		GetTableDefsResp |
		GetHiddenKeysResp |
		UpdateResp |
		WriteResp |
		NewTableIterResp |
		ReadResp |
		CloseTableIterResp |
		TableStatsResp |
		apipb.SyncLogTailResp
}

type Shard 

type Shard = metadata.DNShard

type ShardPolicy 

type ShardPolicy interface {
	Vector(
		ctx context.Context,
		tableID ID,
		getDefs getDefsFunc,
		colName string,
		vec *vector.Vector,
		nodes []logservicepb.DNStore,
	) (
		sharded []*ShardedVector,
		err error,
	)

	Batch(
		ctx context.Context,
		tableID ID,
		getDefs getDefsFunc,
		batch *batch.Batch,
		nodes []logservicepb.DNStore,
	) (
		sharded []*ShardedBatch,
		err error,
	)
}

func NewDefaultShardPolicy 

func NewDefaultShardPolicy(mp *mpool.MPool) ShardPolicy

type ShardedBatch 

type ShardedBatch struct {
	Shard Shard
	Batch *batch.Batch
}

type ShardedVector 

type ShardedVector struct {
	Shard  Shard
	Vector *vector.Vector
}

type Table 

type Table struct {
	// contains filtered or unexported fields
}

func (*Table) AddTableDef 

func (t *Table) AddTableDef(ctx context.Context, def engine.TableDef) error

func (*Table) DelTableDef 

func (t *Table) DelTableDef(ctx context.Context, def engine.TableDef) error

func (*Table) Delete 

func (t *Table) Delete(ctx context.Context, bat *batch.Batch, colName string) error

func (*Table) GetHideKey 

func (*Table) GetHideKey() *engine.Attribute

func (*Table) GetHideKeys 

func (t *Table) GetHideKeys(ctx context.Context) (attrs []*engine.Attribute, err error)

func (*Table) GetLogTail 

func (t *Table) GetLogTail(
	ctx context.Context,
	from *timestamp.Timestamp,
	to *timestamp.Timestamp,
	targetShard Shard,
) (
	resp *apipb.SyncLogTailResp,
	err error,
)

func (*Table) GetPriKeyOrHideKey 

func (*Table) GetPriKeyOrHideKey() ([]engine.Attribute, bool)

func (*Table) GetPrimaryKeys 

func (t *Table) GetPrimaryKeys(ctx context.Context) ([]*engine.Attribute, error)

func (*Table) GetTableID 

func (t *Table) GetTableID(ctx context.Context) uint64

func (*Table) MaxAndMinValues added in v0.7.0 

func (t *Table) MaxAndMinValues(ctx context.Context) ([][2]any, []uint8, error)

func (*Table) NewReader 

func (t *Table) NewReader(
	ctx context.Context,
	parallel int,
	expr *plan.Expr,
	shardIDs [][]byte,
) (
	readers []engine.Reader,
	err error,
)

func (*Table) Ranges 

func (t *Table) Ranges(ctx context.Context, _ *plan.Expr) ([][]byte, error)

func (*Table) Rows 

func (t *Table) Rows(ctx context.Context) (int64, error)

func (*Table) Size 

func (t *Table) Size(ctx context.Context, columnName string) (int64, error)

func (*Table) Stats added in v0.7.0 

func (t *Table) Stats(ctx context.Context, e *plan2.Expr) (*plan.Stats, error)

func (*Table) TableColumns 

func (t *Table) TableColumns(ctx context.Context) ([]*engine.Attribute, error)

func (*Table) TableDefs 

func (t *Table) TableDefs(ctx context.Context) ([]engine.TableDef, error)

func (*Table) Update 

func (t *Table) Update(ctx context.Context, data *batch.Batch) error

func (*Table) UpdateConstraint added in v0.7.0 

func (t *Table) UpdateConstraint(context.Context, *engine.ConstraintDef) error

func (*Table) Write 

func (t *Table) Write(ctx context.Context, data *batch.Batch) error

type TableReader 

type TableReader struct {
	// contains filtered or unexported fields
}

func (*TableReader) Close 

func (t *TableReader) Close() error

func (*TableReader) Read 

func (t *TableReader) Read(ctx context.Context, colNames []string, plan *plan.Expr, mp *mpool.MPool) (*batch.Batch, error)

type TableStatsReq 

type TableStatsReq struct {
	TableID ID
}

type TableStatsResp 

type TableStatsResp struct {
	Rows int
}

type TruncateRelationReq 

type TruncateRelationReq struct {
	NewTableID   ID
	OldTableID   ID
	DatabaseID   ID
	DatabaseName string
	Name         string
}

type TruncateRelationResp 

type TruncateRelationResp struct {
	ID ID
}

type UpdateReq 

type UpdateReq struct {
	TableID      ID
	DatabaseName string
	TableName    string
	Batch        *batch.Batch
}

type UpdateResp 

type UpdateResp struct {
}

type WriteReq 

type WriteReq struct {
	TableID      ID
	DatabaseName string
	TableName    string
	Batch        *batch.Batch
}

type WriteReqeust 

type WriteReqeust interface {
	CreateDatabaseReq |
		DeleteDatabaseReq |
		CreateRelationReq |
		DeleteRelationReq |
		TruncateRelationReq |
		AddTableDefReq |
		DelTableDefReq |
		DeleteReq |
		UpdateReq |
		WriteReq
}

type WriteResp 

type WriteResp struct {
}

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