// NewOrderBookSummaryResource converts the provided query and summary into a json object
// that can be displayed to the end user.
func NewOrderBookSummaryResource(query db.OrderBookSummaryQuery, summary db.OrderBookSummaryRecord) (result OrderBookSummaryResource, err error) {
bt, err := assets.String(query.SellingType)
if err != nil {
return
}
ct, err := assets.String(query.BuyingType)
if err != nil {
return
}
result = OrderBookSummaryResource{
Bids: newPriceLevelResources(summary.Bids()),
Asks: newPriceLevelResources(summary.Bids()),
Selling: AssetResource{
AssetType: bt,
AssetCode: query.SellingCode,
AssetIssuer: query.SellingIssuer,
},
Buying: AssetResource{
AssetType: ct,
AssetCode: query.BuyingCode,
AssetIssuer: query.BuyingIssuer,
},
}
return
}
func (f *EffectOrderBookFilter) Apply(ctx context.Context, in sq.SelectBuilder) (sql sq.SelectBuilder, err error) {
sql = in
sellingType, err := assets.String(f.SellingType)
if err != nil {
return
}
buyingType, err := assets.String(f.BuyingType)
if err != nil {
return
}
if f.SellingType == xdr.AssetTypeAssetTypeNative {
sql = sql.Where(`
(heff.details->>'sold_asset_type' = ?
AND heff.details->>'sold_asset_code' IS NULL
AND heff.details->>'sold_asset_issuer' IS NULL)`,
sellingType,
)
} else {
sql = sql.Where(`
(heff.details->>'sold_asset_type' = ?
AND heff.details->>'sold_asset_code' = ?
AND heff.details->>'sold_asset_issuer' = ?)`,
sellingType,
f.SellingCode,
f.SellingIssuer,
)
}
if f.BuyingType == xdr.AssetTypeAssetTypeNative {
sql = sql.Where(`
(heff.details->>'bought_asset_type' = ?
AND heff.details->>'bought_asset_code' IS NULL
AND heff.details->>'bought_asset_issuer' IS NULL)`,
buyingType,
)
} else {
sql = sql.Where(`
(heff.details->>'bought_asset_type' = ?
AND heff.details->>'bought_asset_code' = ?
AND heff.details->>'bought_asset_issuer' = ?)`,
buyingType,
f.BuyingCode,
f.BuyingIssuer,
)
}
if err != nil {
return
}
return
}