Mike Schwörer
f3ecba3883
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90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
package wmo
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import (
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"context"
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"go.mongodb.org/mongo-driver/bson"
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"gogs.mikescher.com/BlackForestBytes/goext/exerr"
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)
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func (c *Coll[TData]) decodeSingle(ctx context.Context, dec Decodable) (TData, error) {
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var res TData
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var err error
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if c.customDecoder != nil {
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res, err = (*c.customDecoder)(ctx, dec)
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if err != nil {
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return *new(TData), exerr.Wrap(err, "failed to decode single entity with custom-decoder").Type("decoder", *c.customDecoder).Build()
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}
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} else {
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err = dec.Decode(&res)
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if err != nil {
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return *new(TData), exerr.Wrap(err, "failed to decode single entity").Type("target-type", res).Build()
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}
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}
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for _, hook := range c.unmarshalHooks {
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res = hook(res)
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}
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return res, nil
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}
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func (c *Coll[TData]) decodeAll(ctx context.Context, cursor Cursorable) ([]TData, error) {
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res := make([]TData, 0, cursor.RemainingBatchLength())
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if c.customDecoder != nil {
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for cursor.Next(ctx) {
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entry, err := (*c.customDecoder)(ctx, cursor)
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if err != nil {
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return nil, exerr.Wrap(err, "failed to decode entity with custom-decoder").Type("decoder", *c.customDecoder).Build()
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}
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res = append(res, entry)
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}
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} else {
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err := cursor.All(ctx, &res)
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if err != nil {
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return nil, exerr.Wrap(err, "failed to batch-decode entity").Type("target-type", res).Build()
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}
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}
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for i := 0; i < len(res); i++ {
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for _, hook := range c.unmarshalHooks {
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res[i] = hook(res[i])
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}
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}
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return res, nil
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}
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func (c *Coll[TData]) decodeSingleOrRequery(ctx context.Context, dec Decodable) (TData, error) {
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if c.extraModPipeline == nil {
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// simple case, we can just decode the result and return it
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return c.decodeSingle(ctx, dec)
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} else {
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// annyoing case, we have a extraModPipeline and need to re-query the document such that the extraModPipeline is applied...
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type genDoc struct {
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ID any `bson:"_id"`
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}
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var res genDoc
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err := dec.Decode(&res)
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if err != nil {
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return *new(TData), exerr.Wrap(err, "failed to ID-decode entity").Build()
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}
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v, err := c.findOneInternal(ctx, bson.M{"_id": res.ID}, false)
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if err != nil {
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return *new(TData), exerr.Wrap(err, "failed to re-query entity").Any("_id", res.ID).Build()
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}
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return *v, nil
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}
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}
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