types

package
v0.7.2-1 Latest Latest
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 Go to latest Published: Feb 10, 2017 License: Apache-2.0 Imports: 20 Imported by: 0

Documentation

Overview

Package types is a generated protocol buffer package.

It is generated from these files: 

types.proto

It has these top-level messages: 

Posting
PostingList

Index

Constants

View Source 
const (
	// MinCellLevel is the smallest cell level (largest cell size) used by indexing
	MinCellLevel = 5 // Approx 250km x 380km
	// MaxCellLevel is the largest cell leve (smallest cell size) used by indexing
	MaxCellLevel = 16 // Approx 120m x 180m
	// MaxCells is the maximum number of cells to use when indexing regions.
	MaxCells = 18
)
View Source 
const (
	BinaryID   = TypeID(Posting_BINARY)
	Int32ID    = TypeID(Posting_INT32)
	FloatID    = TypeID(Posting_FLOAT)
	BoolID     = TypeID(Posting_BOOL)
	DateTimeID = TypeID(Posting_DATETIME)
	StringID   = TypeID(Posting_STRING)
	DateID     = TypeID(Posting_DATE)
	GeoID      = TypeID(Posting_GEO)
	UidID      = TypeID(Posting_UID)
)

Note: These ids are stored in the posting lists to indicate the type of the data. The order *cannot* be changed without breaking existing data. When adding a new type *always* add to the end of this list. Never delete anything from this list even if it becomes unused.

View Source 
const EarthRadiusMeters = 1000 * 6371

EarthRadiusMeters is the radius of the earth in meters (in a spherical earth model).

Variables

View Source 
var (
	ErrInvalidLengthTypes = fmt.Errorf("proto: negative length found during unmarshaling")
	ErrIntOverflowTypes   = fmt.Errorf("proto: integer overflow")
)
View Source 
var Posting_ValType_name = map[int32]string{
	0: "STRING",
	1: "BINARY",
	2: "INT32",
	3: "FLOAT",
	4: "BOOL",
	5: "DATE",
	6: "DATETIME",
	7: "GEO",
	8: "UID",
}
View Source 
var Posting_ValType_value = map[string]int32{
	"STRING":   0,
	"BINARY":   1,
	"INT32":    2,
	"FLOAT":    3,
	"BOOL":     4,
	"DATE":     5,
	"DATETIME": 6,
	"GEO":      7,
	"UID":      8,
}

Functions

func EarthAngle 

func EarthAngle(dist float64) s1.Angle

EarthAngle converts a to distance on earth in meters to an angle

func FilterGeoUids 

func FilterGeoUids(uids *task.List, values []*task.Value, q *GeoQueryData) *task.List

FilterGeoUids filters the uids based on the corresponding values and GeoQueryData.

func IndexGeoTokens 

func IndexGeoTokens(g geom.T) ([]string, error)

IndexTokens returns the tokens to be used in a geospatial index for the given geometry. If the geometry is not supported it returns an error.

func Intersects 

func Intersects(l1 *s2.Loop, l2 *s2.Loop) bool

Intersects returns true if the two loops intersect.

func IsGeoFunc 

func IsGeoFunc(str string) bool

IsGeoFunc returns if a function is of geo type.

func Less 

func Less(a, b Val) bool

Less returns true if a is strictly less than b.

func Marshal 

func Marshal(from Val, to *Val) error

func ObjectValue 

func ObjectValue(id TypeID, value interface{}) (*graph.Value, error)

ObjectValue converts into graph.Value.

func Sort 

func Sort(sID TypeID, v []Val, ul *task.List, desc bool) error

Sort sorts the given array in-place.

func WithinCapPolygon 

func WithinCapPolygon(g1 *s2.Loop, g2 *s2.Cap) bool

TODO(Ashwin): Improve this to make it more accurate.

func WithinPolygon 

func WithinPolygon(g1 *s2.Loop, g2 *s2.Loop) bool

WithinPolygon returns true if g1 is within g2 approximaltely. Note that this is very far from accurate within function and is a temporary fix. TODO(Ashwin): Improve this to make it more accurate.

Types

type Area 

type Area float64

Area denotes an area on Earth

func EarthArea 

func EarthArea(a float64) Area

EarthArea converts an area on the unit sphere to an area on earth in sq. meters.

func (Area) String 

func (a Area) String() string

String converts the area to human readable units

type GeoQueryData 

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

GeoQueryData is internal data used by the geo query filter to additionally filter the geometries.

func GetGeoTokens 

func GetGeoTokens(funcArgs []string) ([]string, *GeoQueryData, error)

GetGeoTokens returns the corresponding index keys based on the type of function.

func (GeoQueryData) MatchesFilter 

func (q GeoQueryData) MatchesFilter(g geom.T) bool

MatchesFilter applies the query filter to a geo value

type Length 

type Length float64

Length denotes a length on Earth

func EarthDistance 

func EarthDistance(angle s1.Angle) Length

EarthDistance converts an angle to distance on earth in meters.

func (Length) String 

func (l Length) String() string

String converts the length to human readable units

type Posting 

type Posting struct {
	Uid     uint64          `protobuf:"fixed64,1,opt,name=uid,proto3" json:"uid,omitempty"`
	Value   []byte          `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
	ValType Posting_ValType `protobuf:"varint,3,opt,name=val_type,json=valType,proto3,enum=types.Posting_ValType" json:"val_type,omitempty"`
	Label   string          `protobuf:"bytes,4,opt,name=label,proto3" json:"label,omitempty"`
	Commit  uint64          `protobuf:"varint,5,opt,name=commit,proto3" json:"commit,omitempty"`
	// TODO: op is only used temporarily. See if we can remove it from here.
	Op uint32 `protobuf:"varint,12,opt,name=op,proto3" json:"op,omitempty"`
}

func (*Posting) Descriptor 

func (*Posting) Descriptor() ([]byte, []int)

func (*Posting) Marshal 

func (m *Posting) Marshal() (data []byte, err error)

func (*Posting) MarshalTo 

func (m *Posting) MarshalTo(data []byte) (int, error)

func (*Posting) ProtoMessage 

func (*Posting) ProtoMessage()

func (*Posting) Reset 

func (m *Posting) Reset()

func (*Posting) Size 

func (m *Posting) Size() (n int)

func (*Posting) String 

func (m *Posting) String() string

func (*Posting) Unmarshal 

func (m *Posting) Unmarshal(data []byte) error

type PostingList 

type PostingList struct {
	Postings []*Posting `protobuf:"bytes,1,rep,name=postings" json:"postings,omitempty"`
	Checksum []byte     `protobuf:"bytes,2,opt,name=checksum,proto3" json:"checksum,omitempty"`
	Commit   uint64     `protobuf:"varint,3,opt,name=commit,proto3" json:"commit,omitempty"`
}

func (*PostingList) Descriptor 

func (*PostingList) Descriptor() ([]byte, []int)

func (*PostingList) GetPostings 

func (m *PostingList) GetPostings() []*Posting

func (*PostingList) Marshal 

func (m *PostingList) Marshal() (data []byte, err error)

func (*PostingList) MarshalTo 

func (m *PostingList) MarshalTo(data []byte) (int, error)

func (*PostingList) ProtoMessage 

func (*PostingList) ProtoMessage()

func (*PostingList) Reset 

func (m *PostingList) Reset()

func (*PostingList) Size 

func (m *PostingList) Size() (n int)

func (*PostingList) String 

func (m *PostingList) String() string

func (*PostingList) Unmarshal 

func (m *PostingList) Unmarshal(data []byte) error

type Posting_ValType 

type Posting_ValType int32
const (
	Posting_STRING   Posting_ValType = 0
	Posting_BINARY   Posting_ValType = 1
	Posting_INT32    Posting_ValType = 2
	Posting_FLOAT    Posting_ValType = 3
	Posting_BOOL     Posting_ValType = 4
	Posting_DATE     Posting_ValType = 5
	Posting_DATETIME Posting_ValType = 6
	Posting_GEO      Posting_ValType = 7
	Posting_UID      Posting_ValType = 8
)

func (Posting_ValType) EnumDescriptor 

func (Posting_ValType) EnumDescriptor() ([]byte, []int)

func (Posting_ValType) String 

func (x Posting_ValType) String() string

type QueryType 

type QueryType byte

QueryType indicates the type of geo query. 

const (
	// QueryTypeWithin finds all points that are within the given geometry
	QueryTypeWithin QueryType = iota
	// QueryTypeContains finds all polygons that contain the given point
	QueryTypeContains
	// QueryTypeIntersects finds all objects that intersect the given geometry
	QueryTypeIntersects
	// QueryTypeNear finds all points that are within the given distance from the given point.
	QueryTypeNear
)

type TypeID 

type TypeID Posting_ValType

func TypeForName 

func TypeForName(name string) (TypeID, bool)

TypeForName returns the type corresponding to the given name. If name is not recognized, it returns nil.

func (TypeID) IsScalar 

func (t TypeID) IsScalar() bool

func (TypeID) Name 

func (t TypeID) Name() string

type Val 

type Val struct {
	Tid   TypeID
	Value interface{}
}

Val is a value with type information.

func Convert 

func Convert(from Val, toID TypeID) (Val, error)

Convert converts the value to given scalar type.

func ValueForType 

func ValueForType(id TypeID) Val

ValueForType returns the zero value for a type id

func (Val) MarshalJSON 

func (v Val) MarshalJSON() ([]byte, error)

Source Files

View all Source files

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