goext/wmo/queryFind.go

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2023-06-06 21:33:49 +02:00
package wmo
import (
"context"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
func (c *Coll[TData]) FindOne(ctx context.Context, filter bson.M) (TData, error) {
var res TData
err := c.coll.FindOne(ctx, filter).Decode(&res)
if err != nil {
return *new(TData), err
}
return res, nil
}
func (c *Coll[TData]) FindOneOpt(ctx context.Context, filter bson.M) (*TData, error) {
var res TData
err := c.coll.FindOne(ctx, filter).Decode(&res)
if err == mongo.ErrNoDocuments {
return nil, nil
}
if err != nil {
return nil, err
}
return &res, nil
}
func (c *Coll[TData]) FindOneByID(ctx context.Context, id EntityID) (TData, error) {
var res TData
err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
if err != nil {
return *new(TData), err
}
return res, nil
}
func (c *Coll[TData]) FindOneOptByID(ctx context.Context, id EntityID) (*TData, error) {
var res TData
err := c.coll.FindOne(ctx, bson.M{"_id": id}).Decode(&res)
if err == mongo.ErrNoDocuments {
return nil, nil
}
if err != nil {
return nil, err
}
return &res, nil
}
func (c *Coll[TData]) Find(ctx context.Context, filter bson.M, opts ...*options.FindOptions) ([]TData, error) {
cursor, err := c.coll.Find(ctx, filter, opts...)
if err != nil {
return nil, err
}
res := make([]TData, 0, cursor.RemainingBatchLength())
err = cursor.All(ctx, &res)
if err != nil {
return nil, err
}
return res, nil
}