engine

package
Version: v1.1.4 Latest Latest
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Published: Jan 28, 2021 License: GPL-3.0 Imports: 14 Imported by: 0

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Types

type JoinEngine

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

JoinEngine represents join executor.

func NewJoinEngine

func NewJoinEngine(log *xlog.Log, node *builder.JoinNode, txn backend.Transaction) *JoinEngine

NewJoinEngine creates the new join executor.

func (*JoinEngine) Execute

func (j *JoinEngine) Execute(ctx *xcontext.ResultContext) error

Execute used to execute the executor.

type MergeEngine

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

MergeEngine represents merge executor.

func NewMergeEngine

func NewMergeEngine(log *xlog.Log, node *builder.MergeNode, txn backend.Transaction) *MergeEngine

NewMergeEngine creates the new merge executor.

func (*MergeEngine) Execute

func (m *MergeEngine) Execute(ctx *xcontext.ResultContext) error

Execute used to execute the executor.

type PlanEngine

type PlanEngine interface {
	Execute(ctx *xcontext.ResultContext) error
	// contains filtered or unexported methods
}

PlanEngine interface.

func BuildEngine

func BuildEngine(log *xlog.Log, plan builder.PlanNode, txn backend.Transaction) PlanEngine

BuildEngine used to build the executor tree.

type UnionEngine

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

UnionEngine represents merge executor.

func NewUnionEngine

func NewUnionEngine(log *xlog.Log, node *builder.UnionNode, txn backend.Transaction) *UnionEngine

NewUnionEngine creates the new union executor.

func (*UnionEngine) Execute

func (u *UnionEngine) Execute(ctx *xcontext.ResultContext) error

Execute used to execute the executor.

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