// Copyright 2020 beego 
//
// 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 orm

import (
	"context"
)

type FilterChain func(next Filter) Filter

type Filter func(ctx context.Context, inv *Invocation)

var globalFilterChains = make([]FilterChain, 0, 4)

// AddGlobalFilterChain adds a new FilterChain
// All orm instances built after this invocation will use this filterChain,
// but instances built before this invocation will not be affected
func AddGlobalFilterChain(filterChain FilterChain) {
	globalFilterChains = append(globalFilterChains, filterChain)
}