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schema: allow to customize behavior; resolves #694
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package schema | ||
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| import ( | ||
| "context" | ||
| "reflect" | ||
|
|
||
| "github.com/cayleygraph/cayley/graph" | ||
| "github.com/cayleygraph/cayley/graph/path" | ||
| "github.com/cayleygraph/cayley/quad" | ||
| "github.com/cayleygraph/cayley/voc" | ||
| ) | ||
|
|
||
| // GenerateID is called when any object without an ID field is being saved. | ||
| // | ||
| // Deprecated: see Config.GenerateID | ||
| var GenerateID = func(_ interface{}) quad.Value { | ||
| return quad.RandomBlankNode() | ||
| } | ||
|
|
||
| var global = NewConfig() | ||
|
|
||
| // Global returns a default global schema config. | ||
| func Global() *Config { | ||
| return global | ||
| } | ||
|
|
||
| // PathForType builds a path (morphism) for a given Go type. | ||
| // | ||
| // Deprecated: see Config.PathForType | ||
| func PathForType(rt reflect.Type) (*path.Path, error) { | ||
| return global.PathForType(rt) | ||
| } | ||
|
|
||
| // WriteAsQuads writes a single value in form of quads into specified quad writer. | ||
| // | ||
| // Deprecated: see Config.WriteAsQuads | ||
| func WriteAsQuads(w quad.Writer, o interface{}) (quad.Value, error) { | ||
| return global.WriteAsQuads(w, o) | ||
| } | ||
|
|
||
| // WriteNamespaces will writes namespaces list into graph. | ||
| // | ||
| // Deprecated: see Config.WriteNamespaces | ||
| func WriteNamespaces(w quad.Writer, n *voc.Namespaces) error { | ||
| return global.WriteNamespaces(w, n) | ||
| } | ||
|
|
||
| // LoadNamespaces will load namespaces stored in graph to a specified list. | ||
| // | ||
| // Deprecated: see Config.LoadNamespaces | ||
| func LoadNamespaces(ctx context.Context, qs graph.QuadStore, dest *voc.Namespaces) error { | ||
| return global.LoadNamespaces(ctx, qs, dest) | ||
| } | ||
|
|
||
| // LoadIteratorToDepth is the same as LoadIteratorTo, but stops at a specified depth. | ||
| // | ||
| // Deprecated: see Config.LoadIteratorToDepth | ||
| func LoadIteratorToDepth(ctx context.Context, qs graph.QuadStore, dst reflect.Value, depth int, list graph.Iterator) error { | ||
| return global.LoadIteratorToDepth(ctx, qs, dst, depth, list) | ||
| } | ||
|
|
||
| // LoadIteratorTo is a lower level version of LoadTo. | ||
| // | ||
| // Deprecated: see Config.LoadIteratorTo | ||
| func LoadIteratorTo(ctx context.Context, qs graph.QuadStore, dst reflect.Value, list graph.Iterator) error { | ||
| return global.LoadIteratorToDepth(ctx, qs, dst, -1, list) | ||
| } | ||
|
|
||
| // LoadPathTo is the same as LoadTo, but starts loading objects from a given path. | ||
| // | ||
| // Deprecated: see Config.LoadPathTo | ||
| func LoadPathTo(ctx context.Context, qs graph.QuadStore, dst interface{}, p *path.Path) error { | ||
| return global.LoadIteratorTo(ctx, qs, reflect.ValueOf(dst), p.BuildIterator()) | ||
| } | ||
|
|
||
| // LoadTo will load a sub-graph of objects starting from ids (or from any nodes, if empty) | ||
| // to a destination Go object. Destination can be a struct, slice or channel. | ||
| // | ||
| // Deprecated: see Config.LoadTo | ||
| func LoadTo(ctx context.Context, qs graph.QuadStore, dst interface{}, ids ...quad.Value) error { | ||
| return global.LoadTo(ctx, qs, dst, ids...) | ||
| } | ||
|
|
||
| // LoadToDepth is the same as LoadTo, but stops at a specified depth. | ||
| // | ||
| // Deprecated: see Config.LoadToDepth | ||
| func LoadToDepth(ctx context.Context, qs graph.QuadStore, dst interface{}, depth int, ids ...quad.Value) error { | ||
| return global.LoadToDepth(ctx, qs, dst, depth, ids...) | ||
| } |
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