inference

package
v0.10.2 Latest Latest
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 Go to latest Published: Nov 13, 2024 License: Apache-2.0 Imports: 40 Imported by: 0

Documentation

Overview

Package inference defines process that automatically determines the data type of a variable or expression from database meta information

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ExtractColumnConfig 

func ExtractColumnConfig(column *sqlparser.Column) (*view.ColumnConfig, error)

func ExtractRelationColumns 

func ExtractRelationColumns(join *query.Join) (string, string)

func HasWhitespace 

func HasWhitespace(text string) bool

func HintToStruct 

func HintToStruct(encoded string, aStructPtr interface{}) error

func IsToOne 

func IsToOne(join *query.Join) bool

func ParentAlias 

func ParentAlias(join *query.Join) string

ParentAlias returns join parent selector

func PkgPath 

func PkgPath(fieldName string, pkgPath string) (fieldPath string)

func SplitByWhitespace 

func SplitByWhitespace(fragment string) []string

func SqlxTag 

func SqlxTag(tag reflect.StructTag) *io.Tag

func TrimParenthesis 

func TrimParenthesis(text string) string

func TryUnmarshalHint 

func TryUnmarshalHint(hint string, any interface{}) error

Types

type ColumnParameterNamer 

type ColumnParameterNamer func(column *Field) string

type Field 

type Field struct {
	view.Field
	Skipped    bool
	Column     *sqlparser.Column
	Pk         *sink.Key
	Tags       Tags
	Ptr        bool
	ColumnCase text.CaseFormat
	Relation   string
}

func NewField 

func NewField(rField *reflect.StructField) *Field

func (*Field) EnsureSchema 

func (f *Field) EnsureSchema() *state.Schema

func (*Field) StructField 

func (f *Field) StructField(opts ...ReflectOption) reflect.StructField

type Imports 

type Imports struct {
	Types []string

	Packages []string
	// contains filtered or unexported fields
}

func NewImports 

func NewImports() Imports

func (*Imports) AddPackage 

func (i *Imports) AddPackage(pkg string)

func (*Imports) AddType 

func (i *Imports) AddType(typeName string)

func (*Imports) Clone 

func (i *Imports) Clone() *Imports

func (*Imports) DefaultPackageImports 

func (i *Imports) DefaultPackageImports() string

func (*Imports) PackageImports 

func (i *Imports) PackageImports() string

func (*Imports) RawImports 

func (i *Imports) RawImports() string

func (*Imports) TypeImports 

func (i *Imports) TypeImports() string

type ModificationSetting 

type ModificationSetting struct {
	IsAuxiliary bool
	IndexField  *Field
	PathParam   *Parameter
}

type Parameter 

type Parameter struct {
	Explicit bool //explicit parameter are added to the main view as dependency
	state.Parameter
	Repeated State
	Object   State
	ModificationSetting
	SQL         string
	Hint        string
	AssumedType bool
	Connector   string
	InOutput    bool
	Of          string
}

func NewConstParameter 

func NewConstParameter(paramName string, paramValue interface{}) *Parameter

func NewPathParameter 

func NewPathParameter(name string) *Parameter

func (*Parameter) AppendComposite 

func (p *Parameter) AppendComposite(baseParameter *Parameter)

func (*Parameter) DsqlOutputParameterDeclaration added in v0.10.0 

func (p *Parameter) DsqlOutputParameterDeclaration() string

func (*Parameter) DsqlParameterDeclaration 

func (p *Parameter) DsqlParameterDeclaration() string

func (*Parameter) EnsureCodec 

func (p *Parameter) EnsureCodec()

func (*Parameter) EnsureLocation 

func (p *Parameter) EnsureLocation()

func (*Parameter) EnsureSchema 

func (p *Parameter) EnsureSchema()

func (*Parameter) FieldDeclaration 

func (p *Parameter) FieldDeclaration(embedRoot string, embed map[string]string, def *view.TypeDefinition) string

func (*Parameter) HasDataType 

func (p *Parameter) HasDataType() bool

func (*Parameter) HasSchema 

func (p *Parameter) HasSchema() bool

func (*Parameter) IndexFieldDeclaration added in v0.10.0 

func (p *Parameter) IndexFieldDeclaration() string

func (*Parameter) IndexVariable 

func (p *Parameter) IndexVariable() string

func (*Parameter) LocalVariable 

func (p *Parameter) LocalVariable() string

func (*Parameter) MergeFrom 

func (p *Parameter) MergeFrom(info *Parameter)

func (*Parameter) SyncObject 

func (p *Parameter) SyncObject()

type ReflectOption 

type ReflectOption func(r *reflectOptions)

func WithStructTag 

func WithStructTag() ReflectOption

type Relation 

type Relation struct {
	Name        string
	Join        *query.Join
	ParentField *Field
	KeyField    *Field
	Cardinality state.Cardinality
	*Spec
}

Relation defines relation

type Selector 

type Selector []string

Selector defines selector

func (Selector) Absolute 

func (s Selector) Absolute(loc ...string) string

func (Selector) Leaf 

func (s Selector) Leaf() Selector

func (Selector) Name 

func (s Selector) Name() string

func (Selector) Path 

func (s Selector) Path(loc ...string) string

func (Selector) Resolve 

func (s Selector) Resolve(prefix string, loc ...string) string

type Spec 

type Spec struct {
	Namespace   string
	Parent      *Spec
	Package     string
	IsAuxiliary bool
	Table       string
	SQL         string
	SQLArgs     []interface{}
	Columns     sqlparser.Columns

	Fk        map[string]sink.Key
	Type      *Type
	Relations []*Relation
	// contains filtered or unexported fields
}

Spec defines table/sql base specification

func NewSpec 

func NewSpec(ctx context.Context, db *sql.DB, messages *msg.Messages, table, SQL string, SQLArgs ...interface{}) (*Spec, error)

NewSpec discover column derived type for supplied SQL/table

func (*Spec) AddRelation 

func (s *Spec) AddRelation(name string, join *query.Join, spec *Spec, cardinality state.Cardinality) error

AddRelation adds relations

func (*Spec) BuildType 

func (s *Spec) BuildType(pkg, name string, cardinality state.Cardinality, whitelist, blacklist map[string]bool, doc state.Documentation) error

BuildType build a type from infered table/SQL definition

func (*Spec) EnsureRelationType 

func (s *Spec) EnsureRelationType()

func (*Spec) Fields 

func (s *Spec) Fields(includeHas bool, doc state.Documentation) []*view.Field

func (*Spec) NormalizeSQL added in v0.10.1 

func (s *Spec) NormalizeSQL()

func (*Spec) PkStructQL 

func (s *Spec) PkStructQL(selector Selector) (*Field, string)

PkStructQL crates a PK struct SQL

func (*Spec) Selector 

func (s *Spec) Selector(rootPath string) Selector

Selector returns current sepcifiction selector (path from root)

func (*Spec) TypeDefinition 

func (s *Spec) TypeDefinition(wrapper string, includeHas bool, doc state.Documentation) *view.TypeDefinition

TypeDefinition builds spec based tyep definition

func (*Spec) ViewSQL 

func (s *Spec) ViewSQL(columnParameter ColumnParameterNamer) string

ViewSQL return structQL SQL for relation

type State 

type State []*Parameter

State defines datly view/resource parameters

func NewState 

func NewState(modulePath, dataType string, types *xreflect.Types) (State, error)

NewState creates a state from state go struct

func (State) AddDescriptions 

func (s State) AddDescriptions(doc state.Documentation)

func (*State) AdjustOutput 

func (s *State) AdjustOutput() error

func (*State) Append 

func (s *State) Append(params ...*Parameter) bool

Append append parameter

func (*State) AppendConst 

func (s *State) AppendConst(constants map[string]interface{})

func (*State) AppendParameters 

func (s *State) AppendParameters(parameters ...state.Parameters)

func (*State) AppendViewParameters 

func (s *State) AppendViewParameters(params ...*state.Parameter)

func (State) BodyField 

func (s State) BodyField() string

func (*State) BodyParameter added in v0.10.0 

func (s *State) BodyParameter() *Parameter

func (State) Clone 

func (s State) Clone() State

func (State) Compact 

func (s State) Compact(modulePath string, registry *xreflect.Types) (State, error)

func (State) DsqlOutputParameterDeclaration added in v0.10.0 

func (s State) DsqlOutputParameterDeclaration() string

DsqlOutputParameterDeclaration returns dql parameter declaration

func (State) DsqlParameterDeclaration 

func (s State) DsqlParameterDeclaration() string

DsqlParameterDeclaration returns dql parameter declaration

func (State) EnsureReflectTypes 

func (s State) EnsureReflectTypes(modulePath string, pkg string, registry *xreflect.Types) error

func (State) EnsureStructQLTypes added in v0.9.7 

func (s State) EnsureStructQLTypes() error

func (State) Expand 

func (s State) Expand(text string) string

func (State) Explicit 

func (s State) Explicit() State

Implicit filters implicit parameters

func (State) FilterByKind 

func (s State) FilterByKind(kind state.Kind) State

FilterByKind filters state parameter by kind

func (*State) GetOutputParameter 

func (s *State) GetOutputParameter() *Parameter

func (State) HandlerLocalVariables 

func (s State) HandlerLocalVariables() ([]string, string)

HandlerLocalVariables returns golang handler local variables reassigned from state

func (State) Has 

func (s State) Has(name string) bool

Has returns true if state already has a parameter

func (State) Implicit 

func (s State) Implicit() State

Implicit filters implicit parameters

func (State) IndexByName 

func (s State) IndexByName() map[string]*Parameter

IndexByName indexes parameter by name

func (State) IndexByPathIndex 

func (s State) IndexByPathIndex() map[string]*Parameter

IndexByPathIndex indexes parameter by index variable

func (State) Lookup 

func (s State) Lookup(name string) *Parameter

Lookup returns matched paramter

func (State) MetaViewSQL 

func (s State) MetaViewSQL() *Parameter

func (State) NormalizeComposites 

func (s State) NormalizeComposites() (State, error)

NormalizeComposites normalizes state

func (State) Parameters 

func (s State) Parameters() state.Parameters

func (State) ReflectType 

func (s State) ReflectType(pkgPath string, lookupType xreflect.LookupType) (reflect.Type, error)

func (State) RemoveReserved 

func (s State) RemoveReserved() State

func (*State) StateForSQL 

func (s *State) StateForSQL(SQL string, isRoot bool) State

type Table 

type Table struct {
	Name         string
	Namespace    string
	Columns      sqlparser.Columns
	QueryColumns sqlparser.Columns

	Tables         []*Table
	OutputJSONHint string
	// contains filtered or unexported fields
}

func NewTable 

func NewTable(ctx context.Context, db *sql.DB, SQL string) (*Table, error)

func (*Table) AppendTable 

func (t *Table) AppendTable(table *Table)

func (*Table) Detect 

func (t *Table) Detect(ctx context.Context, db *sql.DB) (err error)

func (*Table) HasNamespace 

func (t *Table) HasNamespace(ns string) bool

func (*Table) HasTable 

func (t *Table) HasTable(table string) bool

func (*Table) Lookup 

func (t *Table) Lookup(column string) *sqlparser.Column

type TagValue 

type TagValue []string

func (*TagValue) Append 

func (e *TagValue) Append(element string)

Append appends tag value element

type Tags 

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

func (*Tags) Init 

func (t *Tags) Init(tag string)

func (*Tags) Set 

func (t *Tags) Set(tag string, value TagValue)

Set sets tag value

func (*Tags) Stringify 

func (t *Tags) Stringify() string

Stringify return text representation of struct tag

type Type 

type Type struct {
	Package     string
	Name        string
	Cardinality state.Cardinality
	PkFields    []*Field

	RelationFields []*Field
	// contains filtered or unexported fields
}

func NewType 

func NewType(packageName string, name string, rType reflect.Type) (*Type, error)

func (*Type) AddRelation 

func (t *Type) AddRelation(name string, spec *Spec, relation *Relation) *Field

func (*Type) AppendColumnField 

func (t *Type) AppendColumnField(column *sqlparser.Column, skipped bool, doc state.Documentation, table string) (*Field, error)

func (*Type) ByColumn 

func (t *Type) ByColumn(name string) *Field

func (*Type) ColumnFields 

func (t *Type) ColumnFields(table string, doc state.Documentation) []*view.Field

func (*Type) ExpandType 

func (t *Type) ExpandType(simpleName string) string

func (*Type) Fields 

func (t *Type) Fields(opts ...ReflectOption) []reflect.StructField

func (*Type) SimplePackage added in v0.9.0 

func (t *Type) SimplePackage() string

func (*Type) TypeName 

func (t *Type) TypeName() string

Source Files

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