surrealpatch/db/executor.go
2017-02-28 00:17:10 +00:00

61 lines
1.4 KiB
Go

// Copyright © 2016 Abcum Ltd
//
// 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 db
import (
"sync"
"github.com/abcum/fibre"
"github.com/abcum/surreal/kvs"
"github.com/abcum/surreal/mem"
"github.com/abcum/surreal/sql"
"github.com/abcum/surreal/util/data"
)
var executors = sync.Pool{
New: func() interface{} {
return &executor{}
},
}
type executor struct {
txn kvs.TX
ctx *data.Doc
ast *sql.Query
mem *mem.Store
web *fibre.Context
closed chan struct{}
}
func newExec(ast *sql.Query, web *fibre.Context, vars map[string]interface{}) (e *executor) {
e = executors.Get().(*executor)
e.ast = ast
e.web = web
e.ctx = data.Consume(vars)
e.closed = make(chan struct{}, 1)
return
}
func (e *executor) done() {
executors.Put(e)
}
func (e *executor) set(key string, val interface{}) {
e.ctx.Set(val, key)
}
func (e *executor) get(key string) (val interface{}) {
return e.ctx.Get(key).Data()
}