casts

package
v0.56.3 Latest Latest
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 Go to latest Published: May 26, 2026 License: Apache-2.0 Imports: 16 Imported by: 0

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Constants

This section is empty.

Variables

This section is empty.

Functions

func CastIDToTableName 

func CastIDToTableName(castID id.Cast) doltdb.TableName

CastIDToTableName returns the ID in a format that's better for user consumption.

func Init 

func Init() map[id.Cast]Cast

Init initializes this package.

Types

type Cast 

type Cast struct {
	ID       id.Cast
	CastType CastType
	Function id.Function
	BuiltIn  pgtypes.TypeCastFunction
	UseInOut bool
}

Cast represents a cast between two types.

func DeserializeCast 

func DeserializeCast(ctx context.Context, data []byte) (Cast, error)

DeserializeCast returns the Cast that was serialized in the byte slice. Returns an empty Cast (invalid ID) if data is nil or empty.

func (Cast) Eval 

func (cast Cast) Eval(ctx *sql.Context, val any, sourceType *pgtypes.DoltgresType, targetType *pgtypes.DoltgresType) (any, error)

Eval evaluates the cast against the given value.

func (Cast) GetID 

func (cast Cast) GetID() id.Id

GetID implements the interface objinterface.RootObject.

func (Cast) GetRootObjectID 

func (cast Cast) GetRootObjectID() objinterface.RootObjectID

GetRootObjectID implements the interface objinterface.RootObject.

func (Cast) HashOf 

func (cast Cast) HashOf(ctx context.Context) (hash.Hash, error)

HashOf implements the interface objinterface.RootObject.

func (Cast) Name 

func (cast Cast) Name() doltdb.TableName

Name implements the interface rootobject.RootObject.

func (Cast) Serialize 

func (cast Cast) Serialize(ctx context.Context) ([]byte, error)

Serialize returns the Cast as a byte slice. If the Cast is invalid, then this returns a nil slice.

type CastType 

type CastType uint8

CastType is the type of the cast, indicating which contexts it may be called in. 

const (
	CastType_Explicit   CastType = 0
	CastType_Assignment CastType = 1
	CastType_Implicit   CastType = 2
)

type Collection 

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

Collection contains a collection of casts.

func LoadCasts 

func LoadCasts(ctx context.Context, root objinterface.RootValue) (*Collection, error)

LoadCasts loads the casts collection from the given root.

func NewCollection 

func NewCollection(ctx context.Context, underlyingMap prolly.AddressMap, ns tree.NodeStore) (*Collection, error)

NewCollection returns a new Collection.

func (*Collection) AddCast 

func (pgc *Collection) AddCast(ctx context.Context, cast Cast) error

AddCast adds a new cast.

func (*Collection) Clone 

func (pgc *Collection) Clone(ctx context.Context) *Collection

Clone returns a new *Collection with the same contents as the original.

func (*Collection) DeserializeRootObject 

func (pgc *Collection) DeserializeRootObject(ctx context.Context, data []byte) (objinterface.RootObject, error)

DeserializeRootObject implements the interface objinterface.Collection.

func (*Collection) DiffRootObjects 

func (pgc *Collection) DiffRootObjects(ctx context.Context, fromHash string, ours objinterface.RootObject, theirs objinterface.RootObject, ancestor objinterface.RootObject) ([]objinterface.RootObjectDiff, objinterface.RootObject, error)

DiffRootObjects implements the interface objinterface.Collection.

func (*Collection) DiffersFrom 

func (pgc *Collection) DiffersFrom(ctx context.Context, root objinterface.RootValue) bool

DiffersFrom returns true when the hash that is associated with the underlying map for this collection is different from the hash in the given root.

func (*Collection) DropCast 

func (pgc *Collection) DropCast(ctx context.Context, castIDs ...id.Cast) error

DropCast drops an existing cast.

func (*Collection) DropRootObject 

func (pgc *Collection) DropRootObject(ctx context.Context, identifier id.Id) error

DropRootObject implements the interface objinterface.Collection.

func (*Collection) GetAssignmentCast 

func (pgc *Collection) GetAssignmentCast(ctx *sql.Context, sourceType *pgtypes.DoltgresType, targetType *pgtypes.DoltgresType) (Cast, error)

GetAssignmentCast returns the assignment type cast function that will cast the source type to the target type. Returns a Cast with an invalid ID if such a cast is not valid.

func (*Collection) GetExplicitCast 

func (pgc *Collection) GetExplicitCast(ctx *sql.Context, sourceType *pgtypes.DoltgresType, targetType *pgtypes.DoltgresType) (Cast, error)

GetExplicitCast returns the explicit type cast function that will cast the source type to the target type. Returns a Cast with an invalid ID if such a cast is not valid.

func (*Collection) GetFieldType 

func (pgc *Collection) GetFieldType(ctx context.Context, fieldName string) *pgtypes.DoltgresType

GetFieldType implements the interface objinterface.Collection.

func (*Collection) GetID 

func (pgc *Collection) GetID() objinterface.RootObjectID

GetID implements the interface objinterface.Collection.

func (*Collection) GetImplicitCast 

func (pgc *Collection) GetImplicitCast(ctx *sql.Context, sourceType *pgtypes.DoltgresType, targetType *pgtypes.DoltgresType) (Cast, error)

GetImplicitCast returns the implicit type cast function that will cast the source type to the target type. Returns a Cast with an invalid ID if such a cast is not valid.

func (*Collection) GetRootObject 

func (pgc *Collection) GetRootObject(ctx context.Context, identifier id.Id) (objinterface.RootObject, bool, error)

GetRootObject implements the interface objinterface.Collection.

func (*Collection) HandleMerge 

func (*Collection) HandleMerge(ctx context.Context, mro merge.MergeRootObject) (doltdb.RootObject, *merge.MergeStats, error)

HandleMerge implements the interface objinterface.Collection.

func (*Collection) HasCast 

func (pgc *Collection) HasCast(ctx context.Context, castID id.Cast) bool

HasCast returns whether the given cast exists.

func (*Collection) HasRootObject 

func (pgc *Collection) HasRootObject(ctx context.Context, identifier id.Id) (bool, error)

HasRootObject implements the interface objinterface.Collection.

func (*Collection) IDToTableName 

func (pgc *Collection) IDToTableName(identifier id.Id) doltdb.TableName

IDToTableName implements the interface objinterface.Collection.

func (*Collection) IterAll 

func (pgc *Collection) IterAll(ctx context.Context, callback func(rootObj objinterface.RootObject) (stop bool, err error)) error

IterAll implements the interface objinterface.Collection.

func (*Collection) IterIDs 

func (pgc *Collection) IterIDs(ctx context.Context, callback func(identifier id.Id) (stop bool, err error)) error

IterIDs implements the interface objinterface.Collection.

func (*Collection) IterateCasts 

func (pgc *Collection) IterateCasts(ctx context.Context, callback func(c Cast) (stop bool, err error)) error

IterateCasts iterates over all casts in the collection.

func (*Collection) LoadCollection 

func (*Collection) LoadCollection(ctx context.Context, root objinterface.RootValue) (objinterface.Collection, error)

LoadCollection implements the interface objinterface.Collection.

func (*Collection) LoadCollectionHash 

func (*Collection) LoadCollectionHash(ctx context.Context, root objinterface.RootValue) (hash.Hash, error)

LoadCollectionHash implements the interface objinterface.Collection.

func (*Collection) Map 

func (pgc *Collection) Map(ctx context.Context) (prolly.AddressMap, error)

Map writes any cached sequences to the underlying map, and then returns the underlying map.

func (*Collection) PutRootObject 

func (pgc *Collection) PutRootObject(ctx context.Context, rootObj objinterface.RootObject) error

PutRootObject implements the interface objinterface.Collection.

func (*Collection) RenameRootObject 

func (pgc *Collection) RenameRootObject(ctx context.Context, oldName id.Id, newName id.Id) error

RenameRootObject implements the interface objinterface.Collection.

func (*Collection) ResolveName 

func (pgc *Collection) ResolveName(ctx context.Context, name doltdb.TableName) (doltdb.TableName, id.Id, error)

ResolveName implements the interface objinterface.Collection.

func (*Collection) ResolveNameFromObjects 

func (*Collection) ResolveNameFromObjects(ctx context.Context, name doltdb.TableName, rootObjects []objinterface.RootObject) (doltdb.TableName, id.Id, error)

ResolveNameFromObjects implements the interface objinterface.Collection.

func (*Collection) Serializer 

func (*Collection) Serializer() objinterface.RootObjectSerializer

Serializer implements the interface objinterface.Collection.

func (*Collection) TableNameToID 

func (pgc *Collection) TableNameToID(name doltdb.TableName) id.Id

TableNameToID implements the interface objinterface.Collection.

func (*Collection) UpdateField 

func (pgc *Collection) UpdateField(ctx context.Context, rootObject objinterface.RootObject, fieldName string, newValue any) (objinterface.RootObject, error)

UpdateField implements the interface objinterface.Collection.

func (*Collection) UpdateRoot 

func (pgc *Collection) UpdateRoot(ctx context.Context, root objinterface.RootValue) (objinterface.RootValue, error)

UpdateRoot implements the interface objinterface.Collection.

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