goext/wmo/queryAggregate.go
Mike Schwörer f3ecba3883
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v0.0.304 add support for WithModifyingPipeline to wmo
2023-11-09 09:26:46 +01:00

67 lines
2.0 KiB
Go

package wmo
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"gogs.mikescher.com/BlackForestBytes/goext/exerr"
"gogs.mikescher.com/BlackForestBytes/goext/langext"
)
func (c *Coll[TData]) Aggregate(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) ([]TData, error) {
pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
if err != nil {
return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()
}
res, err := c.decodeAll(ctx, cursor)
if err != nil {
return nil, exerr.Wrap(err, "failed to decode values").Build()
}
return res, nil
}
func (c *Coll[TData]) AggregateOneOpt(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (*TData, error) {
pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
if err != nil {
return nil, exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()
}
if cursor.Next(ctx) {
v, err := c.decodeSingle(ctx, cursor)
if err != nil {
return nil, exerr.Wrap(err, "failed to decode single value").Build()
}
return &v, nil
}
return nil, nil
}
func (c *Coll[TData]) AggregateOne(ctx context.Context, pipeline mongo.Pipeline, opts ...*options.AggregateOptions) (TData, error) {
pipeline = langext.ArrConcat(pipeline, c.extraModPipeline)
cursor, err := c.coll.Aggregate(ctx, pipeline, opts...)
if err != nil {
return *new(TData), exerr.Wrap(err, "mongo-aggregation failed").Any("pipeline", pipeline).Any("options", opts).Str("collection", c.Name()).Build()
}
if cursor.Next(ctx) {
v, err := c.decodeSingle(ctx, cursor)
if err != nil {
return *new(TData), exerr.Wrap(err, "failed to decode single value").Build()
}
return v, nil
}
return *new(TData), exerr.Wrap(mongo.ErrNoDocuments, "no document in result").Build()
}