本文整理汇总了Golang中github.com/google/badwolf/bql/semantic.Statement.Graphs方法的典型用法代码示例。如果您正苦于以下问题:Golang Statement.Graphs方法的具体用法?Golang Statement.Graphs怎么用?Golang Statement.Graphs使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/google/badwolf/bql/semantic.Statement
的用法示例。
在下文中一共展示了Statement.Graphs方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: update
func update(stm *semantic.Statement, store storage.Store, f updater) error {
var (
mu sync.Mutex
wg sync.WaitGroup
errs []string
)
appendError := func(err error) {
mu.Lock()
defer mu.Unlock()
errs = append(errs, err.Error())
}
for _, graphBinding := range stm.Graphs() {
wg.Add(1)
go func(graph string) {
defer wg.Done()
g, err := store.Graph(graph)
if err != nil {
appendError(err)
return
}
err = f(g, stm.Data())
if err != nil {
appendError(err)
}
}(graphBinding)
}
wg.Wait()
if len(errs) > 0 {
return errors.New(strings.Join(errs, "; "))
}
return nil
}
示例2: newQueryPlan
// newQueryPlan returns a new query plan ready to be excecuted.
func newQueryPlan(store storage.Store, stm *semantic.Statement) (*queryPlan, error) {
bs := []string{}
for _, b := range stm.Bindings() {
bs = append(bs, b)
}
t, err := table.New([]string{})
if err != nil {
return nil, err
}
var gs []storage.Graph
for _, g := range stm.Graphs() {
ng, err := store.Graph(g)
if err != nil {
return nil, err
}
gs = append(gs, ng)
}
return &queryPlan{
stm: stm,
store: store,
bndgs: bs,
grfs: gs,
grfsNames: stm.Graphs(),
cls: stm.SortedGraphPatternClauses(),
tbl: t,
}, nil
}