v0.0.147

README.md

@@ -11,13 +11,14 @@ Potentially needs `export GOPRIVATE="gogs.mikescher.com"`
 ### Packages:
 
 | Name         | Maintainer | Description                                                                                                   |
-|-------------|------------|---------------------------------------------------------------------------------------------------------------|
+|--------------|------------|---------------------------------------------------------------------------------------------------------------|
 | langext      | Mike       | General uttility/helper functions, (everything thats missing from go standard library)                        |
 | mathext      | Mike       | Utility/Helper functions for math                                                                             |
 | cryptext     | Mike       | Utility/Helper functions for encryption                                                                       |
 | syncext      | Mike       | Utility/Helper funtions for multi-threading / mutex / channels                                                |
 | dataext      | Mike       | Various useful data structures                                                                                |
 | zipext       | Mike       | Utility for zip/gzip/tar etc                                                                                  |
+| reflectext   | Mike       | Utility for golagn reflection                                                                                 |
 |              |            |                                                                                                               |
 | mongoext     | Mike       | Utility/Helper functions for mongodb                                                                          |
 | cursortoken  | Mike       | MongoDB cursortoken implementation                                                                            |

_data/version.sh

@@ -23,6 +23,8 @@ fi
 
 git pull --ff
 
+go get -u ./...
+
 curr_vers=$(git describe --tags --abbrev=0 | sed 's/v//g')
 
 next_ver=$(echo "$curr_vers" | awk -F. -v OFS=. 'NF==1{print ++$NF}; NF>1{if(length($NF+1)>length($NF))$(NF-1)++; $NF=sprintf("%0*d", length($NF), ($NF+1)%(10^length($NF))); print}')

go.mod

@@ -4,21 +4,21 @@ go 1.19
 
 require (
 	github.com/jmoiron/sqlx v1.3.5
-	go.mongodb.org/mongo-driver v1.11.1
+	go.mongodb.org/mongo-driver v1.11.7
-	golang.org/x/crypto v0.4.0
+	golang.org/x/crypto v0.9.0
-	golang.org/x/sys v0.3.0
+	golang.org/x/sys v0.8.0
-	golang.org/x/term v0.3.0
+	golang.org/x/term v0.8.0
 )
 
 require (
-	github.com/golang/snappy v0.0.1 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
-	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/klauspost/compress v1.16.5 // indirect
-	github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe // indirect
+	github.com/montanaflynn/stats v0.7.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
-	github.com/xdg-go/scram v1.1.1 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
-	github.com/xdg-go/stringprep v1.0.3 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
-	github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d // indirect
+	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/sync v0.2.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
 )

go.sum

@@ -5,12 +5,16 @@ github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfC
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/golang/snappy v0.0.1 h1:Qgr9rKW7uDUkrbSmQeiDsGa8SjGyCOGtuasMWwvp2P4=
 github.com/golang/snappy v0.0.1/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/golang/snappy v0.0.4 h1:yAGX7huGHXlcLOEtBnF4w7FQwA26wojNCwOYAEhLjQM=
+github.com/golang/snappy v0.0.4/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
 github.com/klauspost/compress v1.13.6 h1:P76CopJELS0TiO2mebmnzgWaajssP/EszplttgQxcgc=
 github.com/klauspost/compress v1.13.6/go.mod h1:/3/Vjq9QcHkK5uEr5lBEmyoZ1iFhe47etQ6QUkpK6sk=
+github.com/klauspost/compress v1.16.5 h1:IFV2oUNUzZaz+XyusxpLzpzS8Pt5rh0Z16For/djlyI=
+github.com/klauspost/compress v1.16.5/go.mod h1:ntbaceVETuRiXiv4DpjP66DpAtAGkEQskQzEyD//IeE=
 github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -22,6 +26,8 @@ github.com/mattn/go-sqlite3 v1.14.6 h1:dNPt6NO46WmLVt2DLNpwczCmdV5boIZ6g/tlDrlRU
 github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe h1:iruDEfMl2E6fbMZ9s0scYfZQ84/6SPL6zC8ACM2oIL0=
 github.com/montanaflynn/stats v0.0.0-20171201202039-1bf9dbcd8cbe/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
+github.com/montanaflynn/stats v0.7.1 h1:etflOAAHORrCC44V+aR6Ftzort912ZU+YLiSTuV8eaE=
+github.com/montanaflynn/stats v0.7.1/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -35,31 +41,71 @@ github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
 github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
 github.com/xdg-go/scram v1.1.1 h1:VOMT+81stJgXW3CpHyqHN3AXDYIMsx56mEFrB37Mb/E=
 github.com/xdg-go/scram v1.1.1/go.mod h1:RaEWvsqvNKKvBPvcKeFjrG2cJqOkHTiyTpzz23ni57g=
+github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
+github.com/xdg-go/scram v1.1.2/go.mod h1:RT/sEzTbU5y00aCK8UOx6R7YryM0iF1N2MOmC3kKLN4=
 github.com/xdg-go/stringprep v1.0.3 h1:kdwGpVNwPFtjs98xCGkHjQtGKh86rDcRZN17QEMCOIs=
 github.com/xdg-go/stringprep v1.0.3/go.mod h1:W3f5j4i+9rC0kuIEJL0ky1VpHXQU3ocBgklLGvcBnW8=
+github.com/xdg-go/stringprep v1.0.4 h1:XLI/Ng3O1Atzq0oBs3TWm+5ZVgkq2aqdlvP9JtoZ6c8=
+github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
 github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d h1:splanxYIlg+5LfHAM6xpdFEAYOk8iySO56hMFq6uLyA=
 github.com/youmark/pkcs8 v0.0.0-20181117223130-1be2e3e5546d/go.mod h1:rHwXgn7JulP+udvsHwJoVG1YGAP6VLg4y9I5dyZdqmA=
+github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a h1:fZHgsYlfvtyqToslyjUt3VOPF4J7aK/3MPcK7xp3PDk=
+github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a/go.mod h1:ul22v+Nro/R083muKhosV54bj5niojjWZvU8xrevuH4=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.mongodb.org/mongo-driver v1.11.1 h1:QP0znIRTuL0jf1oBQoAoM0C6ZJfBK4kx0Uumtv1A7w8=
 go.mongodb.org/mongo-driver v1.11.1/go.mod h1:s7p5vEtfbeR1gYi6pnj3c3/urpbLv2T5Sfd6Rp2HBB8=
+go.mongodb.org/mongo-driver v1.11.7 h1:LIwYxASDLGUg/8wOhgOOZhX8tQa/9tgZPgzZoVqJvcs=
+go.mongodb.org/mongo-driver v1.11.7/go.mod h1:G9TgswdsWjX4tmDA5zfs2+6AEPpYJwqblyjsfuh8oXY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/crypto v0.4.0 h1:UVQgzMY87xqpKNgb+kDsll2Igd33HszWHFLmpaRMq/8=
 golang.org/x/crypto v0.4.0/go.mod h1:3quD/ATkf6oY+rnes5c3ExXTbLc8mueNue5/DoinL80=
+golang.org/x/crypto v0.9.0 h1:LF6fAI+IutBocDJ2OT0Q1g8plpYljMZ4+lty+dsqw3g=
+golang.org/x/crypto v0.9.0/go.mod h1:yrmDGqONDYtNj3tH8X9dzUun2m2lzPa9ngI6/RUPGR0=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
+golang.org/x/sync v0.2.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
 golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.3.0 h1:qoo4akIqOcDME5bhc/NgxUdovd6BSS2uMsVjB56q1xI=
 golang.org/x/term v0.3.0/go.mod h1:q750SLmJuPmVoN1blW3UFBPREJfb1KmY3vwxfr+nFDA=
+golang.org/x/term v0.8.0 h1:n5xxQn2i3PC0yLAbjTpNT85q/Kgzcr2gIoX9OrJUols=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/text v0.5.0 h1:OLmvp0KP+FVG99Ct/qFiL/Fhk4zp4QQnZ7b2U+5piUM=
 golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0 h1:2sjJmO8cDvYveuX97RDLsxlyUxLl+GHoLxBiRdHllBE=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

goextVersion.go

@@ -1,5 +1,5 @@
 package goext
 
-const GoextVersion = "0.0.146"
+const GoextVersion = "0.0.147"
 
-const GoextVersionTimestamp = "2023-06-07T12:59:15+0200"
+const GoextVersionTimestamp = "2023-06-07T16:58:17+0200"

reflectext/casting.go

@@ -1,4 +1,4 @@
-package langext
+package reflectext
 
 import (
 	"reflect"

reflectext/primStrSer.go

@@ -0,0 +1,136 @@
+package reflectext
+
+import (
+	"errors"
+	"fmt"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var primitiveSerializer = map[reflect.Type]genSerializer{
+
+	reflect.TypeOf(""): newGenSerializer(serStringToString, serStringToString),
+
+	reflect.TypeOf(int(0)):   newGenSerializer(serIntNumToString[int], serStringToSIntNum[int]),
+	reflect.TypeOf(int32(0)): newGenSerializer(serIntNumToString[int32], serStringToSIntNum[int32]),
+	reflect.TypeOf(int64(0)): newGenSerializer(serIntNumToString[int64], serStringToSIntNum[int64]),
+
+	reflect.TypeOf(uint(0)):   newGenSerializer(serIntNumToString[uint], serStringToUIntNum[uint]),
+	reflect.TypeOf(uint32(0)): newGenSerializer(serIntNumToString[uint32], serStringToUIntNum[uint32]),
+	reflect.TypeOf(uint64(0)): newGenSerializer(serIntNumToString[uint64], serStringToUIntNum[uint64]),
+
+	reflect.TypeOf(float32(0)): newGenSerializer(serFloatNumToString[float32], serStringToFloatNum[float32]),
+	reflect.TypeOf(float64(0)): newGenSerializer(serFloatNumToString[float64], serStringToFloatNum[float64]),
+
+	reflect.TypeOf(true): newGenSerializer(serBoolToString, serStringToBool),
+
+	reflect.TypeOf(primitive.ObjectID{}): newGenSerializer(serObjectIDToString, serStringToObjectID),
+
+	reflect.TypeOf(time.Time{}): newGenSerializer(serTimeToString, serStringToTime),
+}
+
+type genSerializer struct {
+	ToString   func(v any) (string, error)
+	FromString func(v string) (any, error)
+}
+
+func newGenSerializer[TData any](tostr func(v TData) (string, error), fromstr func(v string) (TData, error)) genSerializer {
+	return genSerializer{
+		ToString: func(v any) (string, error) {
+			if tdv, ok := v.(TData); ok {
+				rv, err := tostr(tdv)
+				if err != nil {
+					return "", err
+				}
+				return rv, nil
+			} else {
+				return "", errors.New(fmt.Sprintf("cannot convert type %T to TData (%T)", v, *new(TData)))
+			}
+		},
+		FromString: func(v string) (any, error) {
+			nv, err := fromstr(v)
+			if err != nil {
+				return "", err
+			}
+			return nv, nil
+		},
+	}
+}
+
+func serStringToString(v string) (string, error) {
+	return v, nil
+}
+
+func serIntNumToString[TNum langext.IntegerConstraint](v TNum) (string, error) {
+	return strconv.FormatInt(int64(v), 10), nil
+}
+
+func serStringToSIntNum[TNum langext.SignedConstraint](v string) (TNum, error) {
+	r, err := strconv.ParseInt(v, 10, 64)
+	if err != nil {
+		return 0, err
+	}
+	return TNum(r), nil
+}
+
+func serStringToUIntNum[TNum langext.UnsignedConstraint](v string) (TNum, error) {
+	r, err := strconv.ParseUint(v, 10, 64)
+	if err != nil {
+		return 0, err
+	}
+	return TNum(r), nil
+}
+
+func serFloatNumToString[TNum langext.FloatConstraint](v TNum) (string, error) {
+	return strconv.FormatFloat(float64(v), 'f', -1, 64), nil
+}
+
+func serStringToFloatNum[TNum langext.FloatConstraint](v string) (TNum, error) {
+	r, err := strconv.ParseFloat(v, 64)
+	if err != nil {
+		return 0, err
+	}
+	return TNum(r), nil
+}
+
+func serBoolToString(v bool) (string, error) {
+	return langext.Conditional(v, "true", "false"), nil
+}
+
+func serStringToBool(v string) (bool, error) {
+	if strings.ToLower(v) == "true" {
+		return true, nil
+	}
+	if strings.ToLower(v) == "false" {
+		return true, nil
+	}
+	return false, errors.New(fmt.Sprintf("invalid boolean value '%s'", v))
+}
+
+func serObjectIDToString(v primitive.ObjectID) (string, error) {
+	return v.Hex(), nil
+}
+
+func serStringToObjectID(v string) (primitive.ObjectID, error) {
+	if rv, err := primitive.ObjectIDFromHex(v); err == nil {
+		return rv, nil
+	} else {
+		return primitive.ObjectID{}, err
+	}
+}
+
+func serTimeToString(v time.Time) (string, error) {
+	return v.Format(time.RFC3339Nano), nil
+}
+
+func serStringToTime(v string) (time.Time, error) {
+	if rv, err := time.Parse(time.RFC3339Nano, v); err == nil {
+		return rv, nil
+	} else {
+		return time.Time{}, err
+	}
+}

reflectext/primitiveStringSerializer.go

@@ -0,0 +1,88 @@
+package reflectext
+
+import (
+	"errors"
+	"fmt"
+	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"reflect"
+)
+
+// PrimitiveStringSerializer is used to serialize primitive types (and a few more) from and to string
+// This is not really intended to be user facing, and more as a simple building block for other mechanisms
+// supports:
+//   - golang primitives (ints, uints, floats, bool, string)
+//   - type aliases
+//   - time.Time
+//   - primitive.ObjectID
+type PrimitiveStringSerializer struct{}
+
+func (pss PrimitiveStringSerializer) ValueToString(v any) (string, error) {
+
+	inType := reflect.TypeOf(v)
+
+	if inType.Kind() == reflect.Ptr && langext.IsNil(v) {
+		return "", nil
+	}
+
+	if inType.Kind() == reflect.Ptr {
+		rval1 := reflect.ValueOf(v)
+		rval2 := rval1.Elem()
+		rval3 := rval2.Interface()
+		return pss.ValueToString(rval3)
+	}
+
+	if conv, ok := primitiveSerializer[inType]; ok {
+		return conv.ToString(v)
+	}
+
+	for convType, conv := range primitiveSerializer {
+		if castV, ok := TryCastType(v, convType); ok {
+			return conv.ToString(castV)
+		}
+	}
+
+	return "", errors.New(fmt.Sprintf("failed to find a matching generic <toString> conversion fo type %T", v))
+}
+
+func (pss PrimitiveStringSerializer) ValueFromString(str string, outType reflect.Type) (any, error) {
+
+	if outType.Kind() == reflect.Ptr && str == "" {
+		return reflect.Zero(outType).Interface(), nil // = nil.(outType), nil
+	}
+
+	if outType.Kind() == reflect.Ptr {
+
+		innerValue, err := pss.ValueFromString(str, outType.Elem())
+		if err != nil {
+			return nil, err
+		}
+
+		// this weird piece of shit converts innerValue to &innerValue  (while keeping types)
+
+		rval1 := reflect.ValueOf(innerValue)
+		rval2 := rval1.Convert(outType.Elem())
+		rval3 := reflect.New(outType.Elem())
+		rval3.Elem().Set(rval2)
+		rval4 := rval3.Interface()
+
+		return rval4, nil
+	}
+
+	if conv, ok := primitiveSerializer[outType]; ok {
+		return conv.FromString(str)
+	}
+
+	emptyResultVal := reflect.Zero(outType).Interface()
+
+	for convType, conv := range primitiveSerializer {
+		if _, ok := TryCastType(emptyResultVal, convType); ok {
+			if convVal, err := conv.FromString(str); err == nil {
+				if resVal, ok := TryCastType(convVal, outType); ok {
+					return resVal, nil
+				}
+			}
+		}
+	}
+
+	return "", errors.New(fmt.Sprintf("failed to find a matching generic <toString> conversion fo type %s", outType.String()))
+}

wmo/collection.go

@@ -13,6 +13,7 @@ type EntityID = any
 type fullTypeRef[TData any] struct {
 	IsPointer      bool
 	Kind           reflect.Kind
+	RealType       reflect.Type
 	Type           reflect.Type
 	UnderlyingType reflect.Type
 	Name           string

wmo/pagination.go

@@ -1,6 +1,7 @@
 package wmo
 
 import (
+	"errors"
 	"go.mongodb.org/mongo-driver/bson"
 	ct "gogs.mikescher.com/BlackForestBytes/goext/cursortoken"
 )
@@ -70,6 +71,10 @@ func CreatePagination[TData any](coll *Coll[TData], token ct.CursorToken, fieldP
 		// false
 		pipeline = append(pipeline, bson.D{{Key: "$match", Value: bson.M{"$eq": bson.A{"1", "0"}}}})
 
+	} else {
+
+		return nil, errors.New("unknown ct mode: " + string(token.Mode))
+
 	}
 
 	pipeline = append(pipeline, bson.D{{Key: "$sort", Value: sort}})

wmo/reflection.go

@@ -1,12 +1,9 @@
 package wmo
 
 import (
-	"errors"
-	"fmt"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/reflectext"
 	"reflect"
-	"strconv"
-	"time"
 )
 
 func (c *Coll[TData]) init() {
@@ -48,9 +45,10 @@ func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int
 
 			c.dataTypeMap[fullKey] = fullTypeRef[TData]{
 				IsPointer:      true,
+				RealType:       rvfield.Type(),
 				Kind:           rvfield.Type().Elem().Kind(),
 				Type:           rvfield.Type().Elem(),
-				UnderlyingType: langext.Underlying(rvfield.Type().Elem()),
+				UnderlyingType: reflectext.Underlying(rvfield.Type().Elem()),
 				Name:           rsfield.Name,
 				Index:          newIdxArr,
 			}
@@ -59,9 +57,10 @@ func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int
 
 			c.dataTypeMap[fullKey] = fullTypeRef[TData]{
 				IsPointer:      false,
+				RealType:       rvfield.Type(),
 				Kind:           rvfield.Type().Kind(),
 				Type:           rvfield.Type(),
-				UnderlyingType: langext.Underlying(rvfield.Type()),
+				UnderlyingType: reflectext.Underlying(rvfield.Type()),
 				Name:           rsfield.Name,
 				Index:          newIdxArr,
 			}
@@ -77,210 +76,23 @@ func (c *Coll[TData]) initFields(prefix string, rval reflect.Value, idxarr []int
 }
 
 func (c *Coll[TData]) getTokenValueAsMongoType(value string, fieldName string) (any, error) {
+
 	fref := c.dataTypeMap[fieldName]
 
-	if fref.IsPointer && value == "" {
+	pss := reflectext.PrimitiveStringSerializer{}
-		pointertype := reflect.New(fref.Type).Type()
-		nilvalue := reflect.Zero(pointertype)
-		outvalue := nilvalue.Interface()
-		return outvalue, nil
-	}
 
-	pointerize := func(v any) any {
+	return pss.ValueFromString(value, fref.RealType)
-		if !fref.IsPointer {
-			return v
-		}
 
-		rval1 := reflect.ValueOf(v)
-		rval2 := rval1.Convert(fref.Type)
-		rval3 := reflect.New(fref.Type)
-		rval3.Elem().Set(rval2)
-		return rval3.Interface()
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf("") {
-
-		rt, ok := langext.TryCastType(value, fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from string to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(time.Time{}) {
-
-		t, err := time.Parse(time.RFC3339Nano, value)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as time.Time ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(t, fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from time.Time to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int(0)) {
-
-		t, err := strconv.ParseInt(value, 10, 64)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int64 ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(int(t), fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int32(0)) {
-
-		t, err := strconv.ParseInt(value, 10, 64)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int32 ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(int32(t), fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int32 to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int64(0)) {
-
-		t, err := strconv.ParseInt(value, 10, 64)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as int64 ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(int64(t), fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from int64 to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(float32(0)) {
-
-		t, err := strconv.ParseFloat(value, 64)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as float32 ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(float32(t), fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from float32 to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(float64(0)) {
-
-		t, err := strconv.ParseFloat(value, 64)
-		if err != nil {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' as float64 ('%s')", fieldName, value))
-		}
-
-		rt, ok := langext.TryCastType(float64(t), fref.Type)
-		if !ok {
-			return nil, errors.New(fmt.Sprintf("failed to parse field '%s' from float64 to %s", fieldName, fref.Type.String()))
-		}
-
-		return pointerize(rt), nil
-	}
-
-	return nil, errors.New(fmt.Sprintf("failed to parse field '%s' of type %s (%s)", fieldName, fref.Type.String(), fref.UnderlyingType.String()))
 }
 
 func (c *Coll[TData]) getFieldValueAsTokenString(entity TData, fieldName string) (string, error) {
-	fref := c.dataTypeMap[fieldName]
 
 	realValue := c.getFieldValue(entity, fieldName)
 
-	if langext.IsNil(realValue) {
+	pss := reflectext.PrimitiveStringSerializer{}
-		return "", nil
-	}
 
-	reflValue := reflect.ValueOf(realValue)
+	return pss.ValueToString(realValue)
-	if reflValue.Kind() == reflect.Pointer {
-		reflValue = reflValue.Elem()
-		realValue = reflValue.Interface()
-	}
 
-	if fref.UnderlyingType == reflect.TypeOf("") {
-
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(""))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to string", fieldName, fref.Type.String()))
-		}
-
-		return rt.(string), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(time.Time{}) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(time.Time{}))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to time.Time", fieldName, fref.Type.String()))
-		}
-
-		return rt.(time.Time).Format(time.RFC3339Nano), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int(0)) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int(0)))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int", fieldName, fref.Type.String()))
-		}
-
-		return strconv.Itoa(rt.(int)), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int32(0)) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int32(0)))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int32", fieldName, fref.Type.String()))
-		}
-
-		return strconv.FormatInt(int64(rt.(int32)), 10), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(int64(0)) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(int64(0)))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to int64", fieldName, fref.Type.String()))
-		}
-
-		return strconv.FormatInt(rt.(int64), 10), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(float32(0)) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(float32(0)))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to float32", fieldName, fref.Type.String()))
-		}
-
-		return strconv.FormatFloat(float64(rt.(float32)), 'f', -1, 32), nil
-	}
-
-	if fref.UnderlyingType == reflect.TypeOf(float64(0)) {
-		rt, ok := langext.TryCastType(realValue, reflect.TypeOf(float64(0)))
-		if !ok {
-			return "", errors.New(fmt.Sprintf("failed to cast field '%s' from %s to float64", fieldName, fref.Type.String()))
-		}
-
-		return strconv.FormatFloat(rt.(float64), 'f', -1, 64), nil
-	}
-
-	return "", errors.New(fmt.Sprintf("failed to parse field '%s' of type %s (%s)", fieldName, fref.Type.String(), fref.UnderlyingType.String()))
 }
 
 func (c *Coll[TData]) getFieldType(fieldName string) fullTypeRef[TData] {

wmo/reflection_test.go

@@ -3,6 +3,8 @@ package wmo
 import (
 	"go.mongodb.org/mongo-driver/mongo"
 	"gogs.mikescher.com/BlackForestBytes/goext/langext"
+	"gogs.mikescher.com/BlackForestBytes/goext/rfctime"
+	"gogs.mikescher.com/BlackForestBytes/goext/timeext"
 	"gogs.mikescher.com/BlackForestBytes/goext/tst"
 	"testing"
 	"time"
@@ -20,6 +22,7 @@ func TestReflectionGetFieldType(t *testing.T) {
 		} `bson:"sub"`
 		Str   string                  `bson:"str"`
 		Ptr   *int                    `bson:"ptr"`
+		MDate rfctime.RFC3339NanoTime `bson:"mdate"`
 	}
 
 	coll := W[TestData](&mongo.Collection{})
@@ -27,6 +30,7 @@ func TestReflectionGetFieldType(t *testing.T) {
 	coll.init()
 
 	t0 := time.Now()
+	t1 := rfctime.NewRFC3339Nano(t0)
 
 	d := TestData{
 		ID:    "1",
@@ -38,6 +42,7 @@ func TestReflectionGetFieldType(t *testing.T) {
 		},
 		Str:   "3",
 		Ptr:   langext.Ptr(4),
+		MDate: t1,
 	}
 
 	tst.AssertEqual(t, coll.getFieldType("_id").Kind.String(), "string")
@@ -84,6 +89,7 @@ func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
 		Str   string                  `bson:"str"`
 		Ptr   *int                    `bson:"ptr"`
 		Num   int                     `bson:"num"`
+		MDate rfctime.RFC3339NanoTime `bson:"mdate"`
 	}
 
 	coll := W[TestData](&mongo.Collection{})
@@ -94,15 +100,23 @@ func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
 		v, err := coll.getTokenValueAsMongoType(value, fieldName)
 		if err != nil {
 			t.Errorf("%s", "failed to getTokenValueAsMongoType")
+			t.Errorf("%v+", err)
 		}
 		return v
 	}
 
+	tx, err := time.Parse(time.RFC3339Nano, "2009-11-10T23:00:00Z")
+	if err != nil {
+		t.Errorf("%v", err)
+	}
+
 	tst.AssertEqual(t, gtvasmt("hello", "str").(string), "hello")
 	tst.AssertEqual(t, gtvasmt("4", "num").(int), 4)
 	tst.AssertEqual(t, gtvasmt("asdf", "_id").(IDType), "asdf")
 	tst.AssertEqual(t, gtvasmt("", "ptr").(*int), nil)
 	tst.AssertEqual(t, *(gtvasmt("123", "ptr").(*int)), 123)
+	tst.AssertEqual(t, gtvasmt("2009-11-10T23:00:00Z", "cdate").(time.Time), tx)
+	tst.AssertEqual(t, gtvasmt("2009-11-10T23:00:00Z", "mdate").(rfctime.RFC3339NanoTime), rfctime.NewRFC3339Nano(tx))
 }
 
 func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
@@ -120,17 +134,20 @@ func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
 		Num   int                     `bson:"num"`
 		Ptr2  *int                    `bson:"ptr2"`
 		FFF   float64                 `bson:"fff"`
+		MDate rfctime.RFC3339NanoTime `bson:"mdate"`
 	}
 
 	coll := W[TestData](&mongo.Collection{})
 
 	coll.init()
 
-	t0 := time.Now()
+	t0 := time.Date(2000, 1, 1, 12, 0, 0, 0, timeext.TimezoneBerlin)
+	t1 := rfctime.NewRFC3339Nano(t0)
 
 	d := TestData{
 		ID:    "1",
 		CDate: t0,
+		MDate: t1,
 		Sub: struct {
 			A string `bson:"a"`
 		}{
@@ -146,7 +163,7 @@ func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
 	gfvats := func(value TestData, fieldName string) string {
 		v, err := coll.getFieldValueAsTokenString(value, fieldName)
 		if err != nil {
-			t.Errorf("%s", "failed to getTokenValueAsMongoType")
+			t.Errorf("%s: %v", "failed to getTokenValueAsMongoType", err)
 		}
 		return v
 	}
@@ -157,4 +174,6 @@ func TestReflectionGetFieldValueAsTokenString(t *testing.T) {
 	tst.AssertEqual(t, gfvats(d, "ptr"), "4")
 	tst.AssertEqual(t, gfvats(d, "ptr2"), "")
 	tst.AssertEqual(t, gfvats(d, "fff"), "22.5")
+	tst.AssertEqual(t, gfvats(d, "cdate"), t0.Format(time.RFC3339Nano))
+	tst.AssertEqual(t, gfvats(d, "mdate"), t0.Format(time.RFC3339Nano))
 }