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gitea/vendor/github.com/blevesearch/bleve/registry/store.go

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2017-01-25 03:43:02 +01:00
// Copyright (c) 2014 Couchbase, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package registry
import (
"fmt"
"github.com/blevesearch/bleve/index/store"
)
func RegisterKVStore(name string, constructor KVStoreConstructor) {
_, exists := stores[name]
if exists {
panic(fmt.Errorf("attempted to register duplicate store named '%s'", name))
}
stores[name] = constructor
}
// KVStoreConstructor is used to build a KVStore of a specific type when
// specificied by the index configuration. In addition to meeting the
// store.KVStore interface, KVStores must also support this constructor.
// Note that currently the values of config must
// be able to be marshaled and unmarshaled using the encoding/json library (used
// when reading/writing the index metadata file).
type KVStoreConstructor func(mo store.MergeOperator, config map[string]interface{}) (store.KVStore, error)
type KVStoreRegistry map[string]KVStoreConstructor
func KVStoreConstructorByName(name string) KVStoreConstructor {
return stores[name]
}
func KVStoreTypesAndInstances() ([]string, []string) {
var types []string
var instances []string
for name := range stores {
types = append(types, name)
}
return types, instances
}