data_provider

README

This package is primarily an interface between the wfs3 data collection functions in wfs3/ and the tegola data providers.

While it adds some additional functionality such as filtering based on properties or time parameters not supported by the tegola data providers, the aim is for that functionality to be pushed into the provider for efficiency gains & to make the tegola providers more useful generally as a package.

Documentation

Index

• type BadTimeString
  • func (bts *BadTimeString) Error() string
• type EmptyTile
  • func (et EmptyTile) BufferedExtent() (extent *geom.Extent, srid uint64)
  • func (et EmptyTile) Extent() (extent *geom.Extent, srid uint64)
  • func (_ EmptyTile) ZXY() (uint, uint, uint)
• type ErrDuplicateCollectionName
  • func (e ErrDuplicateCollectionName) Error() string
• type FeatureId
• type Provider
  • func (p *Provider) CollectionFeatures(collectionName string, properties map[string]string, extent *geom.Extent) ([]*prv.Feature, error)
  • func (p *Provider) CollectionNames() ([]string, error)
  • func (p *Provider) FilterFeatures(extent *geom.Extent, collections []string, properties map[string]string) ([]FeatureId, error)
  • func (p *Provider) GetFeatures(featureIds []FeatureId) ([]*prv.Feature, error)
  • func (p *Provider) MakeCollection(name string, featureIds []FeatureId) (string, error)

Types

type BadTimeString

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

func (*BadTimeString) Error

func (bts *BadTimeString) Error() string

type EmptyTile

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

func (EmptyTile) BufferedExtent

func (et EmptyTile) BufferedExtent() (extent *geom.Extent, srid uint64)

func (EmptyTile) Extent

func (et EmptyTile) Extent() (extent *geom.Extent, srid uint64)

func (EmptyTile) ZXY

func (_ EmptyTile) ZXY() (uint, uint, uint)

type ErrDuplicateCollectionName

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

func (ErrDuplicateCollectionName) Error

func (e ErrDuplicateCollectionName) Error() string

type FeatureId

type FeatureId struct {
	Collection string
	FeaturePk  uint64
}

type Provider

type Provider struct {
	Tiler prv.Tiler
	// contains filtered or unexported fields
}

func (*Provider) CollectionFeatures

func (p *Provider) CollectionFeatures(collectionName string, properties map[string]string, extent *geom.Extent) ([]*prv.Feature, error)

Get all features for a particular collection

func (*Provider) CollectionNames

func (p *Provider) CollectionNames() ([]string, error)

Fetch a list of all collection names from provider

func (*Provider) FilterFeatures

func (p *Provider) FilterFeatures(extent *geom.Extent, collections []string, properties map[string]string) ([]FeatureId, error)

Filter out features based on params passed start_time, stop_time, timestamp parameters are specifically used for timestamp filtering

@see check_time_filter().

func (*Provider) GetFeatures

func (p *Provider) GetFeatures(featureIds []FeatureId) ([]*prv.Feature, error)

Get features given collection/pk pairs

func (*Provider) MakeCollection

func (p *Provider) MakeCollection(name string, featureIds []FeatureId) (string, error)

Create a new collection given collection/pk pairs to populate it