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bulk.go
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bulk.go
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package mgo
// Bulk represents an operation that can be prepared with several
// orthogonal changes before being delivered to the server.
//
// WARNING: This API is still experimental.
//
// Relevant documentation:
//
// http://blog.mongodb.org/post/84922794768/mongodbs-new-bulk-api
//
type Bulk struct {
c *Collection
ordered bool
inserts []interface{}
}
// BulkError holds an error returned from running a Bulk operation.
//
// TODO: This is private for the moment, until we understand exactly how
// to report these multi-errors in a useful and convenient way.
type bulkError struct {
err error
}
// BulkResult holds the results for a bulk operation.
type BulkResult struct {
// Be conservative while we understand exactly how to report these
// results in a useful and convenient way, and also how to emulate
// them with prior servers.
private bool
}
func (e *bulkError) Error() string {
return e.err.Error()
}
// Bulk returns a value to prepare the execution of a bulk operation.
//
// WARNING: This API is still experimental.
//
func (c *Collection) Bulk() *Bulk {
return &Bulk{c: c, ordered: true}
}
// Unordered puts the bulk operation in unordered mode.
//
// In unordered mode the indvidual operations may be sent
// out of order, which means latter operations may proceed
// even if prior ones have failed.
func (b *Bulk) Unordered() {
b.ordered = false
}
// Insert queues up the provided documents for insertion.
func (b *Bulk) Insert(docs ...interface{}) {
b.inserts = append(b.inserts, docs...)
}
// Run runs all the operations queued up.
func (b *Bulk) Run() (*BulkResult, error) {
op := &insertOp{b.c.FullName, b.inserts, 0}
if !b.ordered {
op.flags = 1 // ContinueOnError
}
_, err := b.c.writeQuery(op)
if err != nil {
return nil, &bulkError{err}
}
return &BulkResult{}, nil
}