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// Copyright (C) MongoDB, Inc. 2017-present.
//
// 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
package options
import (
"go.mongodb.org/mongo-driver/bson/bsoncodec"
"go.mongodb.org/mongo-driver/mongo/readconcern"
"go.mongodb.org/mongo-driver/mongo/readpref"
"go.mongodb.org/mongo-driver/mongo/writeconcern"
)
// CollectionOptions represents options that can be used to configure a Collection.
type CollectionOptions struct {
// The read concern to use for operations executed on the Collection. The default value is nil, which means that
// the read concern of the database used to configure the Collection will be used.
ReadConcern *readconcern.ReadConcern
// The write concern to use for operations executed on the Collection. The default value is nil, which means that
// the write concern of the database used to configure the Collection will be used.
WriteConcern *writeconcern.WriteConcern
// The read preference to use for operations executed on the Collection. The default value is nil, which means that
// the read preference of the database used to configure the Collection will be used.
ReadPreference *readpref.ReadPref
// The BSON registry to marshal and unmarshal documents for operations executed on the Collection. The default value
// is nil, which means that the registry of the database used to configure the Collection will be used.
Registry *bsoncodec.Registry
}
// Collection creates a new CollectionOptions instance.
func Collection() *CollectionOptions {
return &CollectionOptions{}
}
// SetReadConcern sets the value for the ReadConcern field.
func (c *CollectionOptions) SetReadConcern(rc *readconcern.ReadConcern) *CollectionOptions {
c.ReadConcern = rc
return c
}
// SetWriteConcern sets the value for the WriteConcern field.
func (c *CollectionOptions) SetWriteConcern(wc *writeconcern.WriteConcern) *CollectionOptions {
c.WriteConcern = wc
return c
}
// SetReadPreference sets the value for the ReadPreference field.
func (c *CollectionOptions) SetReadPreference(rp *readpref.ReadPref) *CollectionOptions {
c.ReadPreference = rp
return c
}
// SetRegistry sets the value for the Registry field.
func (c *CollectionOptions) SetRegistry(r *bsoncodec.Registry) *CollectionOptions {
c.Registry = r
return c
}
// MergeCollectionOptions combines the given CollectionOptions instances into a single *CollectionOptions in a
// last-one-wins fashion.
func MergeCollectionOptions(opts ...*CollectionOptions) *CollectionOptions {
c := Collection()
for _, opt := range opts {
if opt == nil {
continue
}
if opt.ReadConcern != nil {
c.ReadConcern = opt.ReadConcern
}
if opt.WriteConcern != nil {
c.WriteConcern = opt.WriteConcern
}
if opt.ReadPreference != nil {
c.ReadPreference = opt.ReadPreference
}
if opt.Registry != nil {
c.Registry = opt.Registry
}
}
return c
}
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