/
cursor.go
85 lines (67 loc) · 1.29 KB
/
cursor.go
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package dbm
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
)
type Cursor interface {
ID() int64
Next(ctx context.Context) bool
TryNext(ctx context.Context) bool
One(result interface{}) error
All(ctx context.Context, result interface{}) error
RemainingBatchLength() int
Close(ctx context.Context) error
Error() error
}
type cursor struct {
*mongo.Cursor
err error
}
func (c *cursor) ID() int64 {
if c.err != nil {
return 0
}
return c.Cursor.ID()
}
func (c *cursor) Next(ctx context.Context) bool {
if c.err != nil {
return false
}
return c.Cursor.Next(ctx)
}
func (c *cursor) TryNext(ctx context.Context) bool {
if c.err != nil {
return false
}
return c.Cursor.TryNext(ctx)
}
func (c *cursor) One(result interface{}) error {
if c.err != nil {
return c.err
}
return c.Cursor.Decode(result)
}
func (c *cursor) All(ctx context.Context, result interface{}) error {
if c.err != nil {
return c.err
}
return c.Cursor.All(ctx, result)
}
func (c *cursor) RemainingBatchLength() int {
if c.err != nil {
return 0
}
return c.Cursor.RemainingBatchLength()
}
func (c *cursor) Close(ctx context.Context) error {
if c.err != nil {
return c.err
}
return c.Cursor.Close(ctx)
}
func (c *cursor) Error() error {
if c.err != nil {
return c.err
}
return c.Cursor.Err()
}