translator

package

v1.38.1 Latest Latest Go to latest Published: Aug 2, 2022 License: Apache-2.0 Imports: 9 Imported by: 0

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Repository

github.com/datacommonsorg/mixer

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Documentation ¶

Index ¶

func Bind(mappings []*types.Mapping, queries []*types.Query) (map[*types.Query][]*types.Mapping, error)
type Binding
type Constraint
- func GetConstraint(graph Graph, funcDeps map[types.Entity]map[string]interface{}) ([]Constraint, map[types.Node]string, error)
type Graph
- func (graph Graph) String() string
type ProvInfo
type Translation
- func Translate(mappings []*types.Mapping, nodes []types.Node, queries []*types.Query, ...) (*Translation, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Bind ¶

func Bind(mappings []*types.Mapping, queries []*types.Query) (map[*types.Query][]*types.Mapping, error)

Bind binds mapping and query statements.

Types ¶

type Binding ¶

type Binding struct {
	Query   *types.Query
	Mapping *types.Mapping
}

Binding contains a query and mapping object which bind together.

type Constraint ¶

type Constraint struct {
	// Left hand side of an SQL condition
	LHS types.Column
	// Right hand side of an SQL condition
	RHS interface{}
}

Constraint wraps the SQL lhs and rhs variable.

func GetConstraint ¶

func GetConstraint(
	graph Graph,
	funcDeps map[types.Entity]map[string]interface{}) ([]Constraint, map[types.Node]string, error)

GetConstraint obtains a list of constraints object that can be used to construct SQL query.

type Graph ¶

type Graph map[interface{}]map[interface{}]struct{}

Graph represents the struct for terms matching.

func (Graph) String ¶

func (graph Graph) String() string

String gets the string reprentation of a graph.

type ProvInfo ¶

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

ProvInfo contains the provenance query metadata

type Translation ¶

type Translation struct {
	SQL        string
	Nodes      []types.Node
	Bindings   []Binding
	Constraint []Constraint
	Prov       map[int][]int
}

Translation contains the translated result.

func Translate ¶

func Translate(
	mappings []*types.Mapping, nodes []types.Node, queries []*types.Query,
	subTypeMap map[string]string, options ...*types.QueryOptions) (
	*Translation, error)

Translate takes a datalog query and translates to GoogleSQL query based on schema mapping.

Source Files ¶

View all Source files

translate.go

Directories ¶

Path	Synopsis
datalog
solver
sparql Package sparql parses Sparql query for translation.	Package sparql parses Sparql query for translation.
testutil
types

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