Golang value.NewAnnotatedValue函数代码示例

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本文整理汇总了Golang中github.com/couchbaselabs/query/value.NewAnnotatedValue函数的典型用法代码示例。如果您正苦于以下问题：Golang NewAnnotatedValue函数的具体用法？Golang NewAnnotatedValue怎么用？Golang NewAnnotatedValue使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了NewAnnotatedValue函数的20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，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: RunOnce

func (this *KeyScan) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		keys, e := this.plan.Keys().Evaluate(parent, context)
		if e != nil {
			context.Error(errors.NewError(e, "Error evaluating KEYS."))
			return
		}

		actuals := keys.Actual()
		switch actuals.(type) {
		case []interface{}:
		case nil:
			actuals = []interface{}(nil)
		default:
			actuals = []interface{}{actuals}
		}

		acts := actuals.([]interface{})

		for _, key := range acts {
			cv := value.NewScopeValue(make(map[string]interface{}), parent)
			av := value.NewAnnotatedValue(cv)
			av.SetAttachment("meta", map[string]interface{}{"id": key})
			if !this.sendItem(av) {
				return
			}
		}
	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:33，代码来源:scan_key.go

示例2: scanPrimary

func (this *PrimaryScan) scanPrimary(context *Context, parent value.Value) {
	conn := datastore.NewIndexConnection(context)
	defer notifyConn(conn) // Notify index that I have stopped

	go this.scanEntries(context, conn)

	var entry *datastore.IndexEntry
	ok := true
	for ok {
		select {
		case <-this.stopChannel:
			return
		default:
		}

		select {
		case entry, ok = <-conn.EntryChannel():
			if ok {
				cv := value.NewScopeValue(make(map[string]interface{}), parent)
				av := value.NewAnnotatedValue(cv)
				av.SetAttachment("meta", map[string]interface{}{"id": entry.PrimaryKey})
				ok = this.sendItem(av)
			}
		case <-this.stopChannel:
			return
		}
	}
}

开发者ID:amarantha-k，项目名称:query，代码行数:28，代码来源:scan_primary.go

示例3: RunOnce

func (this *ValueScan) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		pairs := this.plan.Values()
		for _, pair := range pairs {
			key, err := pair.Key.Evaluate(parent, context)
			if err != nil {
				context.Error(errors.NewError(err, "Error evaluating VALUES."))
				return
			}

			val, err := pair.Value.Evaluate(parent, context)
			if err != nil {
				context.Error(errors.NewError(err, "Error evaluating VALUES."))
				return
			}

			av := value.NewAnnotatedValue(nil)
			av.SetAttachment("key", key)
			av.SetAttachment("value", val)

			if !this.sendItem(av) {
				return
			}
		}
	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:30，代码来源:scan_value.go

示例4: RunOnce

func (this *spanScan) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		conn := datastore.NewIndexConnection(context)
		defer notifyConn(conn) // Notify index that I have stopped

		go this.scan(context, conn)

		var entry *datastore.IndexEntry
		ok := true
		for ok {
			select {
			case <-this.stopChannel:
				return
			default:
			}

			select {
			case entry, ok = <-conn.EntryChannel():
				if ok {
					cv := value.NewScopeValue(make(map[string]interface{}), parent)
					av := value.NewAnnotatedValue(cv)
					av.SetAttachment("meta", map[string]interface{}{"id": entry.PrimaryKey})
					ok = this.sendItem(av)
				}
			case <-this.stopChannel:
				return
			}
		}
	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:34，代码来源:scan_index.go

示例5: processItem

func (this *InitialProject) processItem(item value.AnnotatedValue, context *Context) bool {
	terms := this.plan.Terms()
	n := len(terms)

	if n > 1 {
		return this.processTerms(item, context)
	}

	if n == 0 {
		return this.sendItem(item)
	}

	// n == 1

	result := terms[0].Result()
	expr := result.Expression()

	if expr == nil {
		// Unprefixed star
		if item.Type() == value.OBJECT {
			return this.sendItem(item)
		} else {
			return this.sendItem(_EMPTY_ANNOTATED_VALUE)
		}
	} else if this.plan.Projection().Raw() {
		// Raw projection of an expression
		v, err := expr.Evaluate(item, context)
		if err != nil {
			context.Error(errors.NewError(err, "Error evaluating projection."))
			return false
		}

		if result.As() == "" {
			return this.sendItem(value.NewAnnotatedValue(v))
		}

		sv := value.NewScopeValue(make(map[string]interface{}, 1), item)
		sv.SetField(result.As(), v)
		av := value.NewAnnotatedValue(sv)
		av.SetAttachment("projection", v)
		return this.sendItem(av)
	} else {
		// Any other projection
		return this.processTerms(item, context)
	}
}

开发者ID:amarantha-k，项目名称:query，代码行数:46，代码来源:project_initial.go

示例6: processItem

func (this *FinalProject) processItem(item value.AnnotatedValue, context *Context) bool {
	pv := item.GetAttachment("projection")
	if pv != nil {
		v := pv.(value.Value)
		return this.sendItem(value.NewAnnotatedValue(v))
	}

	return this.sendItem(item)
}

开发者ID:amarantha-k，项目名称:query，代码行数:9，代码来源:project_final.go

示例7: processTerms

func (this *InitialProject) processTerms(item value.AnnotatedValue, context *Context) bool {
	n := len(this.plan.Terms())

	var f map[string]interface{}
	if item.Type() == value.OBJECT {
		f = item.Copy().Fields()
	}

	if f == nil {
		f = make(map[string]interface{}, n)
	}

	pv := value.NewAnnotatedValue(f)
	pv.SetAttachments(item.Attachments())

	p := value.NewValue(make(map[string]interface{}, n+32))
	pv.SetAttachment("projection", p)

	for _, term := range this.plan.Terms() {
		if term.Result().Alias() != "" {
			v, err := term.Result().Expression().Evaluate(item, context)
			if err != nil {
				context.Error(errors.NewError(err, "Error evaluating projection."))
				return false
			}

			p.SetField(term.Result().Alias(), v)

			// Explicit aliases override data
			if term.Result().As() != "" {
				pv.SetField(term.Result().As(), v)
			}
		} else {
			// Star
			starval := item.GetValue()
			if term.Result().Expression() != nil {
				var err error
				starval, err = term.Result().Expression().Evaluate(item, context)
				if err != nil {
					context.Error(errors.NewError(err, "Error evaluating projection."))
					return false
				}
			}

			// Latest star overwrites previous star
			switch sa := starval.Actual().(type) {
			case map[string]interface{}:
				for k, v := range sa {
					p.SetField(k, v)
				}
			}
		}
	}

	return this.sendItem(pv)
}

开发者ID:amarantha-k，项目名称:query，代码行数:56，代码来源:project_initial.go

示例8: RunOnce

func (this *Prepare) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped
		value := value.NewAnnotatedValue(this.plan)
		this.sendItem(value)

	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:10，代码来源:prepare.go

示例9: fetchOne

func (b *storeKeyspace) fetchOne(key string) (value.AnnotatedValue, errors.Error) {
	if key == b.namespace.store.actualStore.Id() {
		doc := value.NewAnnotatedValue(map[string]interface{}{
			"id":  b.namespace.store.actualStore.Id(),
			"url": b.namespace.store.actualStore.URL(),
		})
		return doc, nil
	}
	return nil, errors.NewSystemDatastoreError(nil, "Key Not Found "+key)
}

开发者ID:amarantha-k，项目名称:query，代码行数:10，代码来源:system_keyspace_datastores.go

示例10: genItem

// generate a mock document - used by fetchOne to mock a document in the keyspace
func genItem(i int, nitems int) (value.AnnotatedValue, errors.Error) {
	if i < 0 || i >= nitems {
		return nil, errors.NewOtherDatastoreError(nil,
			fmt.Sprintf("item out of mock range: %v [0,%v)", i, nitems))
	}
	id := strconv.Itoa(i)
	doc := value.NewAnnotatedValue(map[string]interface{}{"id": id, "i": float64(i)})
	doc.SetAttachment("meta", map[string]interface{}{"id": id})
	return doc, nil
}

开发者ID:amarantha-k，项目名称:query，代码行数:11，代码来源:mock.go

示例11: RunOnce

func (this *DummyScan) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		cv := value.NewScopeValue(nil, parent)
		av := value.NewAnnotatedValue(cv)
		this.sendItem(av)
	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:11，代码来源:scan_dummy.go

示例12: fetchOne

func (b *namespaceKeyspace) fetchOne(key string) (value.AnnotatedValue, errors.Error) {
	namespace, excp := b.namespace.store.actualStore.NamespaceById(key)
	if namespace != nil {
		doc := value.NewAnnotatedValue(map[string]interface{}{
			"id":           namespace.Id(),
			"name":         namespace.Name(),
			"datastore_id": b.namespace.store.actualStore.Id(),
		})
		return doc, nil
	}
	return nil, errors.NewSystemDatastoreError(excp, "Key Not Found "+key)
}

开发者ID:amarantha-k，项目名称:query，代码行数:12，代码来源:system_keyspace_namespaces.go

示例13: setAdd

/*
Add input item to the cumulative set. Get the set. If
no errors enountered add the item to the set and return
it. If set has not been initialized yet, create a new set
with capacity _OBJECT_CAP and add the item. Return the
set value.
*/
func setAdd(item, cumulative value.Value) (value.Value, error) {
	set, e := getSet(cumulative)
	if e == nil {
		set.Add(item)
		return cumulative, nil
	}

	set = value.NewSet(_OBJECT_CAP)
	set.Add(item)
	av := value.NewAnnotatedValue(nil)
	av.SetAttachment("set", set)
	return av, nil
}

开发者ID:amarantha-k，项目名称:query，代码行数:20，代码来源:agg_util.go

示例14: afterItems

func (this *Distinct) afterItems(context *Context) {
	if this.collect {
		return
	}

	for _, av := range this.set.Values() {
		if !this.sendItem(value.NewAnnotatedValue(av)) {
			return
		}
	}

	this.set = nil
}

开发者ID:amarantha-k，项目名称:query，代码行数:13，代码来源:distinct.go

示例15: fetchOne

func (b *indexKeyspace) fetchOne(key string) ([]datastore.AnnotatedPair, errors.Error) {
	rv := make([]datastore.AnnotatedPair, 0, 2)
	ids := strings.SplitN(key, "/", 3)

	actualStore := b.namespace.store.actualStore
	namespace, err := actualStore.NamespaceById(ids[0])
	if err != nil {
		return nil, err
	}

	keyspace, err := namespace.KeyspaceById(ids[1])
	if err != nil {
		return nil, err
	}

	indexers, err := keyspace.Indexers()
	if err != nil {
		return nil, err
	}

	for _, indexer := range indexers {
		index, err := indexer.IndexById(ids[2])
		if err != nil {
			continue
		}

		state, msg, err := index.State()
		if err != nil {
			return nil, err
		}

		doc := value.NewAnnotatedValue(map[string]interface{}{
			"id":           index.Id(),
			"name":         index.Name(),
			"keyspace_id":  keyspace.Id(),
			"namespace_id": namespace.Id(),
			"datastore_id": actualStore.Id(),
			"index_key":    datastoreObjectToJSONSafe(indexKeyToIndexKeyStringArray(index.RangeKey())),
			"using":        datastoreObjectToJSONSafe(index.Type()),
			"state":        string(state),
		})

		if msg != "" {
			doc.SetField("message", msg)
		}

		rv = append(rv, datastore.AnnotatedPair{key, doc})
	}

	return rv, nil
}

开发者ID:amarantha-k，项目名称:query，代码行数:51，代码来源:system_keyspace_indexes.go

示例16: processMatch

func (this *Merge) processMatch(item value.AnnotatedValue,
	context *Context, update, delete, insert Operator) bool {
	kv, e := this.plan.Key().Evaluate(item, context)
	if e != nil {
		context.Error(errors.NewError(e, "Error evaluatating MERGE key."))
		return false
	}

	ka := kv.Actual()
	k, ok := ka.(string)
	if !ok {
		context.Error(errors.NewError(nil,
			fmt.Sprintf("Invalid MERGE key %v of type %T.", ka, ka)))
		return false
	}

	bvs, err := this.plan.Keyspace().Fetch([]string{k})
	if err != nil {
		context.Error(err)
		return false
	}

	if len(bvs) > 0 {
		bv := bvs[0].Value

		// Matched; join source and target
		if update != nil {
			item.SetAttachment("target", bv)
		}

		abv := value.NewAnnotatedValue(bv)
		item.SetField(this.plan.KeyspaceRef().Alias(), abv)

		// Perform UPDATE and/or DELETE
		if update != nil {
			update.Input().ItemChannel() <- item
		}

		if delete != nil {
			delete.Input().ItemChannel() <- item
		}
	} else {
		// Not matched; INSERT
		if insert != nil {
			insert.Input().ItemChannel() <- item
		}
	}

	return true
}

开发者ID:amarantha-k，项目名称:query，代码行数:50，代码来源:merge.go

示例17: fetch

func fetch(path string) (item value.AnnotatedValue, e errors.Error) {
	bytes, er := ioutil.ReadFile(path)
	if er != nil {
		if os.IsNotExist(er) {
			// file doesn't exist should simply return nil, nil
			return
		}
		return nil, errors.NewFileDatastoreError(er, "")
	}

	doc := value.NewAnnotatedValue(value.NewValue(bytes))
	doc.SetAttachment("meta", map[string]interface{}{"id": documentPathToId(path)})
	item = doc

	return
}

开发者ID:amarantha-k，项目名称:query，代码行数:16，代码来源:file.go

示例18: Fetch

func (b *keyspace) Fetch(keys []string) ([]datastore.AnnotatedPair, errors.Error) {

	if len(keys) == 0 {
		return nil, errors.NewCbNoKeysFetchError(nil, ":(")
	}

	bulkResponse, err := b.cbbucket.GetBulk(keys)
	if err != nil {
		// Ignore "Not found" keys
		if !isNotFoundError(err) {
			return nil, errors.NewCbBulkGetError(err, "")
		}
	}

	i := 0
	rv := make([]datastore.AnnotatedPair, len(bulkResponse))
	for k, v := range bulkResponse {

		var doc datastore.AnnotatedPair
		doc.Key = k

		Value := value.NewAnnotatedValue(value.NewValue(v.Body))

		meta_flags := binary.BigEndian.Uint32(v.Extras[0:4])
		meta_type := "json"
		if Value.Type() == value.BINARY {
			meta_type = "base64"
		}
		Value.SetAttachment("meta", map[string]interface{}{
			"id":    k,
			"cas":   float64(v.Cas),
			"type":  meta_type,
			"flags": float64(meta_flags),
		})

		logging.Debugf("CAS Value for key %v is %v", k, float64(v.Cas))

		doc.Value = Value
		rv[i] = doc
		i++

	}

	logging.Debugf("Fetched %d keys ", i)

	return rv, nil
}

开发者ID:amarantha-k，项目名称:query，代码行数:47，代码来源:couchbase.go

示例19: RunOnce

func (this *Explain) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		bytes, err := json.Marshal(this.plan)
		if err != nil {
			context.Fatal(errors.NewError(err, "Failed to marshal JSON."))
			return
		}

		value := value.NewAnnotatedValue(bytes)
		this.sendItem(value)

	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:17，代码来源:explain.go

示例20: RunOnce

func (this *CountScan) RunOnce(context *Context, parent value.Value) {
	this.once.Do(func() {
		defer context.Recover()       // Recover from any panic
		defer close(this.itemChannel) // Broadcast that I have stopped
		defer this.notify()           // Notify that I have stopped

		count, e := this.plan.Keyspace().Count()
		if e != nil {
			context.Error(e)
			return
		}

		cv := value.NewScopeValue(nil, parent)
		av := value.NewAnnotatedValue(cv)
		av.SetAttachment("count", value.NewValue(count))
		this.sendItem(av)
	})
}

开发者ID:amarantha-k，项目名称:query，代码行数:18，代码来源:scan_count.go

注：本文中的github.com/couchbaselabs/query/value.NewAnnotatedValue函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。