moving hard to OID model

db/migrations-wstore/000001_init.up.sql

@@ -1,24 +1,29 @@
 CREATE TABLE db_client (
-    clientid varchar(36) PRIMARY KEY,  -- unnecessary, but useful to have a PK
+    oid varchar(36) PRIMARY KEY,
+    version int NOT NULL,
     data json NOT NULL
 );
 
 CREATE TABLE db_window (
-    windowid varchar(36) PRIMARY KEY,
+    oid varchar(36) PRIMARY KEY,
+    version int NOT NULL,
     data json NOT NULL
 );
 
 CREATE TABLE db_workspace (
-    workspaceid varchar(36) PRIMARY KEY,
+    oid varchar(36) PRIMARY KEY,
+    version int NOT NULL,
     data json NOT NULL
 );
 
 CREATE TABLE db_tab (
-    tabid varchar(36) PRIMARY KEY,
+    oid varchar(36) PRIMARY KEY,
+    version int NOT NULL,
     data json NOT NULL
 );
 
 CREATE TABLE db_block (
-    blockid varchar(36) PRIMARY KEY,
+    oid varchar(36) PRIMARY KEY,
+    version int NOT NULL,
     data json NOT NULL
 );

main.go

@@ -60,7 +60,7 @@ func createWindow(windowData *wstore.Window, app *application.App) {
 			TitleBar:                application.MacTitleBarHiddenInset,
 		},
 		BackgroundColour: application.NewRGB(0, 0, 0),
-		URL:              "/public/index.html?windowid=" + windowData.WindowId,
+		URL:              "/public/index.html?windowid=" + windowData.OID,
 		X:                windowData.Pos.X,
 		Y:                windowData.Pos.Y,
 		Width:            windowData.WinSize.Width,
@@ -146,12 +146,12 @@ func main() {
 
 	setupCtx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
 	defer cancelFn()
-	client, err := wstore.DBGetSingleton[wstore.Client](setupCtx)
+	client, err := wstore.DBGetSingleton[*wstore.Client](setupCtx)
 	if err != nil {
 		log.Printf("error getting client data: %v\n", err)
 		return
 	}
-	mainWindow, err := wstore.DBGet[wstore.Window](setupCtx, client.MainWindowId)
+	mainWindow, err := wstore.DBGet[*wstore.Window](setupCtx, client.MainWindowId)
 	if err != nil {
 		log.Printf("error getting main window: %v\n", err)
 		return

pkg/blockcontroller/blockcontroller.go

@@ -64,7 +64,7 @@ func jsonDeepCopy(val map[string]any) (map[string]any, error) {
 func CreateBlock(ctx context.Context, bdef *wstore.BlockDef, rtOpts *wstore.RuntimeOpts) (*wstore.Block, error) {
 	blockId := uuid.New().String()
 	blockData := &wstore.Block{
-		BlockId:     blockId,
+		OID:         blockId,
 		BlockDef:    bdef,
 		Controller:  bdef.Controller,
 		View:        bdef.View,
@@ -266,19 +266,19 @@ func ProcessStaticCommand(blockId string, cmdGen BlockCommand) error {
 		return nil
 	case *SetViewCommand:
 		log.Printf("SETVIEW: %s | %q\n", blockId, cmd.View)
-		block, err := wstore.DBGet[wstore.Block](ctx, blockId)
+		block, err := wstore.DBGet[*wstore.Block](ctx, blockId)
 		if err != nil {
 			return fmt.Errorf("error getting block: %w", err)
 		}
 		block.View = cmd.View
-		err = wstore.DBUpdate[wstore.Block](ctx, block)
+		err = wstore.DBUpdate(ctx, block)
 		if err != nil {
 			return fmt.Errorf("error updating block: %w", err)
 		}
 		return nil
 	case *SetMetaCommand:
 		log.Printf("SETMETA: %s | %v\n", blockId, cmd.Meta)
-		block, err := wstore.DBGet[wstore.Block](ctx, blockId)
+		block, err := wstore.DBGet[*wstore.Block](ctx, blockId)
 		if err != nil {
 			return fmt.Errorf("error getting block: %w", err)
 		}

pkg/service/blockservice/blockservice.go

@@ -40,7 +40,7 @@ func (bs *BlockService) CloseBlock(blockId string) {
 func (bs *BlockService) GetBlockData(blockId string) (*wstore.Block, error) {
 	ctx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
 	defer cancelFn()
-	blockData, err := wstore.DBGet[wstore.Block](ctx, blockId)
+	blockData, err := wstore.DBGet[*wstore.Block](ctx, blockId)
 	if err != nil {
 		return nil, fmt.Errorf("error getting block data: %w", err)
 	}

pkg/service/clientservice/clientservice.go

@@ -18,7 +18,7 @@ const DefaultTimeout = 2 * time.Second
 func (cs *ClientService) GetClientData() (*wstore.Client, error) {
 	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
 	defer cancelFn()
-	clientData, err := wstore.DBGetSingleton[wstore.Client](ctx)
+	clientData, err := wstore.DBGetSingleton[*wstore.Client](ctx)
 	if err != nil {
 		return nil, fmt.Errorf("error getting client data: %w", err)
 	}
@@ -28,7 +28,7 @@ func (cs *ClientService) GetClientData() (*wstore.Client, error) {
 func (cs *ClientService) GetWorkspace(workspaceId string) (*wstore.Workspace, error) {
 	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
 	defer cancelFn()
-	ws, err := wstore.DBGet[wstore.Workspace](ctx, workspaceId)
+	ws, err := wstore.DBGet[*wstore.Workspace](ctx, workspaceId)
 	if err != nil {
 		return nil, fmt.Errorf("error getting workspace: %w", err)
 	}
@@ -38,7 +38,7 @@ func (cs *ClientService) GetWorkspace(workspaceId string) (*wstore.Workspace, er
 func (cs *ClientService) GetTab(tabId string) (*wstore.Tab, error) {
 	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
 	defer cancelFn()
-	tab, err := wstore.DBGet[wstore.Tab](ctx, tabId)
+	tab, err := wstore.DBGet[*wstore.Tab](ctx, tabId)
 	if err != nil {
 		return nil, fmt.Errorf("error getting tab: %w", err)
 	}
@@ -48,7 +48,7 @@ func (cs *ClientService) GetTab(tabId string) (*wstore.Tab, error) {
 func (cs *ClientService) GetWindow(windowId string) (*wstore.Window, error) {
 	ctx, cancelFn := context.WithTimeout(context.Background(), DefaultTimeout)
 	defer cancelFn()
-	window, err := wstore.DBGet[wstore.Window](ctx, windowId)
+	window, err := wstore.DBGet[*wstore.Window](ctx, windowId)
 	if err != nil {
 		return nil, fmt.Errorf("error getting window: %w", err)
 	}

pkg/waveobj/waveobj.go

@@ -15,78 +15,123 @@ import (
 )
 
 const (
-	OTypeKeyName = "otype"
-	OIDKeyName   = "oid"
+	OTypeKeyName   = "otype"
+	OIDKeyName     = "oid"
+	VersionKeyName = "version"
+
+	OIDGoFieldName     = "OID"
+	VersionGoFieldName = "Version"
 )
 
-type waveObjDesc struct {
-	RType    reflect.Type
-	OIDField reflect.StructField
-}
-
-var globalLock = &sync.Mutex{}
-var waveObjMap = make(map[string]*waveObjDesc)
-var waveObj WaveObj
-var waveObjRType = reflect.TypeOf(&waveObj).Elem()
-
-func RegisterType(w WaveObj) {
-	globalLock.Lock()
-	defer globalLock.Unlock()
-	oidType := w.GetOType()
-	if waveObjMap[oidType] != nil {
-		panic(fmt.Sprintf("duplicate WaveObj registration: %T", w))
-	}
-	rtype := reflect.TypeOf(w)
-	field := findOIDField(rtype)
-	if field == nil {
-		panic(fmt.Sprintf("cannot register WaveObj without OID field -- mark with tag `waveobj:\"oid\"`"))
-	}
-	waveObjMap[oidType] = &waveObjDesc{
-		RType:    rtype,
-		OIDField: *field,
-	}
-}
-
-func findOIDField(rtype reflect.Type) *reflect.StructField {
-	for idx := 0; idx < rtype.NumField(); idx++ {
-		field := rtype.Field(idx)
-		if field.PkgPath != "" {
-			// private
-			continue
-		}
-		waveObjTag := field.Tag.Get("waveobj")
-		if waveObjTag == "oid" {
-			if field.Type.Kind() != reflect.String {
-				panic(fmt.Sprintf("in %v marked oid field is not type 'string'", rtype))
-			}
-			return &field
-		}
-	}
-	return nil
-}
-
-func getObjDescForOIDType(oidType string) *waveObjDesc {
-	globalLock.Lock()
-	defer globalLock.Unlock()
-	return waveObjMap[oidType]
-}
-
 type WaveObj interface {
-	GetOType() string
+	GetOType() string // should not depend on object state (should work with nil value)
+}
+
+type waveObjDesc struct {
+	RType        reflect.Type
+	OIDField     reflect.StructField
+	VersionField reflect.StructField
+}
+
+var waveObjMap = sync.Map{}
+var waveObjRType = reflect.TypeOf((*WaveObj)(nil)).Elem()
+
+func RegisterType[T WaveObj]() {
+	var waveObj T
+	otype := waveObj.GetOType()
+	if otype == "" {
+		panic(fmt.Sprintf("otype is empty for %T", waveObj))
+	}
+	rtype := reflect.TypeOf(waveObj)
+	if rtype.Kind() != reflect.Ptr {
+		panic(fmt.Sprintf("wave object must be a pointer for %T", waveObj))
+	}
+	oidField, found := rtype.Elem().FieldByName(OIDGoFieldName)
+	if !found {
+		panic(fmt.Sprintf("missing OID field for %T", waveObj))
+	}
+	if oidField.Type.Kind() != reflect.String {
+		panic(fmt.Sprintf("OID field must be string for %T", waveObj))
+	}
+	if oidField.Tag.Get("json") != OIDKeyName {
+		panic(fmt.Sprintf("OID field json tag must be %q for %T", OIDKeyName, waveObj))
+	}
+	versionField, found := rtype.Elem().FieldByName(VersionGoFieldName)
+	if !found {
+		panic(fmt.Sprintf("missing Version field for %T", waveObj))
+	}
+	if versionField.Type.Kind() != reflect.Int {
+		panic(fmt.Sprintf("Version field must be int for %T", waveObj))
+	}
+	if versionField.Tag.Get("json") != VersionKeyName {
+		panic(fmt.Sprintf("Version field json tag must be %q for %T", VersionKeyName, waveObj))
+	}
+	_, found = waveObjMap.Load(otype)
+	if found {
+		panic(fmt.Sprintf("otype %q already registered", otype))
+	}
+	waveObjMap.Store(otype, &waveObjDesc{
+		RType:        rtype,
+		OIDField:     oidField,
+		VersionField: versionField,
+	})
+}
+
+func getWaveObjDesc(otype string) *waveObjDesc {
+	desc, _ := waveObjMap.Load(otype)
+	if desc == nil {
+		return nil
+	}
+	return desc.(*waveObjDesc)
+}
+
+func GetOID(waveObj WaveObj) string {
+	desc := getWaveObjDesc(waveObj.GetOType())
+	if desc == nil {
+		return ""
+	}
+	return reflect.ValueOf(waveObj).Elem().FieldByIndex(desc.OIDField.Index).String()
+}
+
+func SetOID(waveObj WaveObj, oid string) {
+	desc := getWaveObjDesc(waveObj.GetOType())
+	if desc == nil {
+		return
+	}
+	reflect.ValueOf(waveObj).Elem().FieldByIndex(desc.OIDField.Index).SetString(oid)
+}
+
+func GetVersion(waveObj WaveObj) int {
+	desc := getWaveObjDesc(waveObj.GetOType())
+	if desc == nil {
+		return 0
+	}
+	return int(reflect.ValueOf(waveObj).Elem().FieldByIndex(desc.VersionField.Index).Int())
+}
+
+func SetVersion(waveObj WaveObj, version int) {
+	desc := getWaveObjDesc(waveObj.GetOType())
+	if desc == nil {
+		return
+	}
+	reflect.ValueOf(waveObj).Elem().FieldByIndex(desc.VersionField.Index).SetInt(int64(version))
 }
 
 func ToJson(w WaveObj) ([]byte, error) {
 	m := make(map[string]any)
-	err := mapstructure.Decode(w, &m)
+	dconfig := &mapstructure.DecoderConfig{
+		Result:  &m,
+		TagName: "json",
+	}
+	decoder, err := mapstructure.NewDecoder(dconfig)
 	if err != nil {
 		return nil, err
 	}
-	desc := getObjDescForOIDType(w.GetOType())
-	if desc == nil {
-		return nil, fmt.Errorf("otype %q (%T) not registered", w.GetOType(), w)
+	err = decoder.Decode(w)
+	if err != nil {
+		return nil, err
 	}
 	m[OTypeKeyName] = w.GetOType()
-	m[OIDKeyName] = reflect.ValueOf(w).FieldByIndex(desc.OIDField.Index).String()
 	return json.Marshal(m)
 }
 
@@ -100,23 +145,24 @@ func FromJson(data []byte) (WaveObj, error) {
 	if !ok {
 		return nil, fmt.Errorf("missing otype")
 	}
-	oid, ok := m[OIDKeyName].(string)
-	if !ok {
-		return nil, fmt.Errorf("missing oid")
-	}
-	desc := getObjDescForOIDType(otype)
+	desc := getWaveObjDesc(otype)
 	if desc == nil {
-		return nil, fmt.Errorf("unknown oid type: %s", otype)
+		return nil, fmt.Errorf("unknown otype: %s", otype)
 	}
-	objVal := reflect.New(desc.RType)
-	oidField := objVal.FieldByIndex(desc.OIDField.Index)
-	oidField.SetString(oid)
-	obj := objVal.Interface().(WaveObj)
-	err = mapstructure.Decode(m, obj)
+	wobj := reflect.Zero(desc.RType).Interface().(WaveObj)
+	dconfig := &mapstructure.DecoderConfig{
+		Result:  &wobj,
+		TagName: "json",
+	}
+	decoder, err := mapstructure.NewDecoder(dconfig)
 	if err != nil {
 		return nil, err
 	}
-	return obj, nil
+	err = decoder.Decode(m)
+	if err != nil {
+		return nil, err
+	}
+	return wobj, nil
 }
 
 func FromJsonGen[T WaveObj](data []byte) (T, error) {
@@ -204,9 +250,12 @@ func generateTSTypeInternal(rtype reflect.Type) (string, []reflect.Type) {
 	var buf bytes.Buffer
 	waveObjType := reflect.TypeOf((*WaveObj)(nil)).Elem()
 	buf.WriteString(fmt.Sprintf("type %s = {\n", rtype.Name()))
+	var isWaveObj bool
 	if rtype.Implements(waveObjType) || reflect.PointerTo(rtype).Implements(waveObjType) {
+		isWaveObj = true
 		buf.WriteString(fmt.Sprintf("  %s: string;\n", OTypeKeyName))
 		buf.WriteString(fmt.Sprintf("  %s: string;\n", OIDKeyName))
+		buf.WriteString(fmt.Sprintf("  %s: number;\n", VersionKeyName))
 	}
 	var subTypes []reflect.Type
 	for i := 0; i < rtype.NumField(); i++ {
@@ -218,6 +267,9 @@ func generateTSTypeInternal(rtype reflect.Type) (string, []reflect.Type) {
 		if fieldName == "" {
 			continue
 		}
+		if isWaveObj && (fieldName == OTypeKeyName || fieldName == OIDKeyName || fieldName == VersionKeyName) {
+			continue
+		}
 		optMarker := ""
 		if isFieldOmitEmpty(field) {
 			optMarker = "?"

pkg/waveobj/waveobj_test.go

@@ -7,16 +7,23 @@ import (
 	"log"
 	"reflect"
 	"testing"
-
-	"github.com/wavetermdev/thenextwave/pkg/wstore"
 )
 
+type TestBlock struct {
+	BlockId string `json:"blockid" waveobj:"oid"`
+	Name    string `json:"name"`
+}
+
+func (TestBlock) GetOType() string {
+	return "block"
+}
+
 func TestGenerate(t *testing.T) {
 	log.Printf("Testing Generate\n")
 	tsMap := make(map[reflect.Type]string)
 	var waveObj WaveObj
 	GenerateTSType(reflect.TypeOf(&waveObj).Elem(), tsMap)
-	GenerateTSType(reflect.TypeOf(wstore.Block{}), tsMap)
+	GenerateTSType(reflect.TypeOf(TestBlock{}), tsMap)
 	for k, v := range tsMap {
 		log.Printf("Type: %v, TS:\n%s\n", k, v)
 	}

pkg/wstore/wstore.go

@@ -6,31 +6,41 @@ package wstore
 import (
 	"context"
 	"fmt"
-	"sync"
 	"time"
 
 	"github.com/google/uuid"
 	"github.com/wavetermdev/thenextwave/pkg/shellexec"
 	"github.com/wavetermdev/thenextwave/pkg/util/ds"
+	"github.com/wavetermdev/thenextwave/pkg/waveobj"
 )
 
 var WorkspaceMap = ds.NewSyncMap[*Workspace]()
 var TabMap = ds.NewSyncMap[*Tab]()
 var BlockMap = ds.NewSyncMap[*Block]()
 
+func init() {
+	waveobj.RegisterType[*Client]()
+	waveobj.RegisterType[*Window]()
+	waveobj.RegisterType[*Workspace]()
+	waveobj.RegisterType[*Tab]()
+	waveobj.RegisterType[*Block]()
+}
+
 type Client struct {
-	ClientId     string `json:"clientid"`
+	OID          string `json:"oid"`
+	Version      int    `json:"version"`
 	MainWindowId string `json:"mainwindowid"`
 }
 
-func (c Client) GetId() string {
-	return c.ClientId
+func (*Client) GetOType() string {
+	return "client"
 }
 
 // stores the ui-context of the window
 // workspaceid, active tab, active block within each tab, window size, etc.
 type Window struct {
-	WindowId       string            `json:"windowid"`
+	OID            string            `json:"oid"`
+	Version        int               `json:"version"`
 	WorkspaceId    string            `json:"workspaceid"`
 	ActiveTabId    string            `json:"activetabid"`
 	ActiveBlockMap map[string]string `json:"activeblockmap"` // map from tabid to blockid
@@ -39,42 +49,30 @@ type Window struct {
 	LastFocusTs    int64             `json:"lastfocusts"`
 }
 
-func (w Window) GetId() string {
-	return w.WindowId
+func (*Window) GetOType() string {
+	return "window"
 }
 
 type Workspace struct {
-	Lock        *sync.Mutex `json:"-"`
-	WorkspaceId string      `json:"workspaceid"`
-	Name        string      `json:"name"`
-	TabIds      []string    `json:"tabids"`
+	OID     string   `json:"oid"`
+	Version int      `json:"version"`
+	Name    string   `json:"name"`
+	TabIds  []string `json:"tabids"`
 }
 
-func (ws Workspace) GetId() string {
-	return ws.WorkspaceId
-}
-
-func (ws *Workspace) WithLock(f func()) {
-	ws.Lock.Lock()
-	defer ws.Lock.Unlock()
-	f()
+func (*Workspace) GetOType() string {
+	return "workspace"
 }
 
 type Tab struct {
-	Lock     *sync.Mutex `json:"-"`
-	TabId    string      `json:"tabid"`
-	Name     string      `json:"name"`
-	BlockIds []string    `json:"blockids"`
+	OID      string   `json:"oid"`
+	Version  int      `json:"version"`
+	Name     string   `json:"name"`
+	BlockIds []string `json:"blockids"`
 }
 
-func (tab Tab) GetId() string {
-	return tab.TabId
-}
-
-func (tab *Tab) WithLock(f func()) {
-	tab.Lock.Lock()
-	defer tab.Lock.Unlock()
-	f()
+func (*Tab) GetOType() string {
+	return "tab"
 }
 
 type FileDef struct {
@@ -108,7 +106,8 @@ type WinSize struct {
 }
 
 type Block struct {
-	BlockId     string         `json:"blockid"`
+	OID         string         `json:"oid"`
+	Version     int            `json:"version"`
 	BlockDef    *BlockDef      `json:"blockdef"`
 	Controller  string         `json:"controller"`
 	View        string         `json:"view"`
@@ -116,45 +115,32 @@ type Block struct {
 	RuntimeOpts *RuntimeOpts   `json:"runtimeopts,omitempty"`
 }
 
-func (b *Block) GetOType() string {
+func (*Block) GetOType() string {
 	return "block"
 }
 
-func (b Block) GetId() string {
-	return b.BlockId
-}
-
-// TODO remove
-func (b *Block) WithLock(f func()) {
-	f()
-}
-
 func CreateTab(workspaceId string, name string) (*Tab, error) {
 	tab := &Tab{
-		Lock:     &sync.Mutex{},
-		TabId:    uuid.New().String(),
+		OID:      uuid.New().String(),
 		Name:     name,
 		BlockIds: []string{},
 	}
-	TabMap.Set(tab.TabId, tab)
+	TabMap.Set(tab.OID, tab)
 	ws := WorkspaceMap.Get(workspaceId)
 	if ws == nil {
 		return nil, fmt.Errorf("workspace not found: %q", workspaceId)
 	}
-	ws.WithLock(func() {
-		ws.TabIds = append(ws.TabIds, tab.TabId)
-	})
+	ws.TabIds = append(ws.TabIds, tab.OID)
 	return tab, nil
 }
 
 func CreateWorkspace() (*Workspace, error) {
 	ws := &Workspace{
-		Lock:        &sync.Mutex{},
-		WorkspaceId: uuid.New().String(),
-		TabIds:      []string{},
+		OID:    uuid.New().String(),
+		TabIds: []string{},
 	}
-	WorkspaceMap.Set(ws.WorkspaceId, ws)
-	_, err := CreateTab(ws.WorkspaceId, "Tab 1")
+	WorkspaceMap.Set(ws.OID, ws)
+	_, err := CreateTab(ws.OID, "Tab 1")
 	if err != nil {
 		return nil, err
 	}
@@ -164,7 +150,7 @@ func CreateWorkspace() (*Workspace, error) {
 func EnsureInitialData() error {
 	ctx, cancelFn := context.WithTimeout(context.Background(), 2*time.Second)
 	defer cancelFn()
-	clientCount, err := DBGetCount[Client](ctx)
+	clientCount, err := DBGetCount[*Client](ctx)
 	if err != nil {
 		return fmt.Errorf("error getting client count: %w", err)
 	}
@@ -175,7 +161,7 @@ func EnsureInitialData() error {
 	workspaceId := uuid.New().String()
 	tabId := uuid.New().String()
 	client := &Client{
-		ClientId:     uuid.New().String(),
+		OID:          uuid.New().String(),
 		MainWindowId: windowId,
 	}
 	err = DBInsert(ctx, client)
@@ -183,7 +169,7 @@ func EnsureInitialData() error {
 		return fmt.Errorf("error inserting client: %w", err)
 	}
 	window := &Window{
-		WindowId:       windowId,
+		OID:            windowId,
 		WorkspaceId:    workspaceId,
 		ActiveTabId:    tabId,
 		ActiveBlockMap: make(map[string]string),
@@ -201,16 +187,16 @@ func EnsureInitialData() error {
 		return fmt.Errorf("error inserting window: %w", err)
 	}
 	ws := &Workspace{
-		WorkspaceId: workspaceId,
-		Name:        "default",
-		TabIds:      []string{tabId},
+		OID:    workspaceId,
+		Name:   "default",
+		TabIds: []string{tabId},
 	}
 	err = DBInsert(ctx, ws)
 	if err != nil {
 		return fmt.Errorf("error inserting workspace: %w", err)
 	}
 	tab := &Tab{
-		TabId:    uuid.New().String(),
+		OID:      uuid.New().String(),
 		Name:     "Tab 1",
 		BlockIds: []string{},
 	}

pkg/wstore/wstore_dbops.go

@@ -6,155 +6,124 @@ package wstore
 import (
 	"context"
 	"fmt"
-	"reflect"
+
+	"github.com/wavetermdev/thenextwave/pkg/waveobj"
 )
 
-const Table_Client = "db_client"
-const Table_Workspace = "db_workspace"
-const Table_Tab = "db_tab"
-const Table_Block = "db_block"
-const Table_Window = "db_window"
-
-// can replace with struct tags in the future
-type ObjectWithId interface {
-	GetId() string
+func waveObjTableName(w waveobj.WaveObj) string {
+	return "db_" + w.GetOType()
 }
 
-// can replace these with struct tags in the future
-var idColumnName = map[string]string{
-	Table_Client:    "clientid",
-	Table_Workspace: "workspaceid",
-	Table_Tab:       "tabid",
-	Table_Block:     "blockid",
-	Table_Window:    "windowid",
+func tableNameGen[T waveobj.WaveObj]() string {
+	var zeroObj T
+	return "db_" + zeroObj.GetOType()
 }
 
-var tableToType = map[string]reflect.Type{
-	Table_Client:    reflect.TypeOf(Client{}),
-	Table_Workspace: reflect.TypeOf(Workspace{}),
-	Table_Tab:       reflect.TypeOf(Tab{}),
-	Table_Block:     reflect.TypeOf(Block{}),
-	Table_Window:    reflect.TypeOf(Window{}),
-}
-
-var typeToTable map[reflect.Type]string
-
-func init() {
-	typeToTable = make(map[reflect.Type]string)
-	for k, v := range tableToType {
-		typeToTable[v] = k
-	}
-}
-
-func DBGetCount[T ObjectWithId](ctx context.Context) (int, error) {
+func DBGetCount[T waveobj.WaveObj](ctx context.Context) (int, error) {
 	return WithTxRtn(ctx, func(tx *TxWrap) (int, error) {
-		var valInstance T
-		table := typeToTable[reflect.TypeOf(valInstance)]
-		if table == "" {
-			return 0, fmt.Errorf("unknown table type: %T", valInstance)
-		}
+		table := tableNameGen[T]()
 		query := fmt.Sprintf("SELECT count(*) FROM %s", table)
 		return tx.GetInt(query), nil
 	})
 }
 
-func DBGetSingleton[T ObjectWithId](ctx context.Context) (*T, error) {
-	return WithTxRtn(ctx, func(tx *TxWrap) (*T, error) {
-		var rtn T
-		query := fmt.Sprintf("SELECT data FROM %s LIMIT 1", typeToTable[reflect.TypeOf(rtn)])
-		jsonData := tx.GetString(query)
-		return TxReadJson[T](tx, jsonData), nil
-	})
-}
-
-func DBGet[T ObjectWithId](ctx context.Context, id string) (*T, error) {
-	return WithTxRtn(ctx, func(tx *TxWrap) (*T, error) {
-		var rtn T
-		table := typeToTable[reflect.TypeOf(rtn)]
-		if table == "" {
-			return nil, fmt.Errorf("unknown table type: %T", rtn)
-		}
-		query := fmt.Sprintf("SELECT data FROM %s WHERE %s = ?", table, idColumnName[table])
-		jsonData := tx.GetString(query, id)
-		return TxReadJson[T](tx, jsonData), nil
-	})
-}
-
 type idDataType struct {
-	Id   string
-	Data string
+	OId     string
+	Version int
+	Data    []byte
 }
 
-func DBSelectMap[T ObjectWithId](ctx context.Context, ids []string) (map[string]*T, error) {
-	return WithTxRtn(ctx, func(tx *TxWrap) (map[string]*T, error) {
-		var valInstance T
-		table := typeToTable[reflect.TypeOf(valInstance)]
-		if table == "" {
-			return nil, fmt.Errorf("unknown table type: %T", &valInstance)
+func DBGetSingleton[T waveobj.WaveObj](ctx context.Context) (T, error) {
+	return WithTxRtn(ctx, func(tx *TxWrap) (T, error) {
+		table := tableNameGen[T]()
+		query := fmt.Sprintf("SELECT oid, version, data FROM %s LIMIT 1", table)
+		var row idDataType
+		tx.Get(&row, query)
+		rtn, err := waveobj.FromJsonGen[T](row.Data)
+		if err != nil {
+			return rtn, err
 		}
+		waveobj.SetVersion(rtn, row.Version)
+		return rtn, nil
+	})
+}
+
+func DBGet[T waveobj.WaveObj](ctx context.Context, id string) (T, error) {
+	return WithTxRtn(ctx, func(tx *TxWrap) (T, error) {
+		table := tableNameGen[T]()
+		query := fmt.Sprintf("SELECT oid, version, data FROM %s WHERE oid = ?", table)
+		var row idDataType
+		tx.Get(&row, query, id)
+		rtn, err := waveobj.FromJsonGen[T](row.Data)
+		if err != nil {
+			return rtn, err
+		}
+		waveobj.SetVersion(rtn, row.Version)
+		return rtn, nil
+	})
+}
+
+func DBSelectMap[T waveobj.WaveObj](ctx context.Context, ids []string) (map[string]T, error) {
+	return WithTxRtn(ctx, func(tx *TxWrap) (map[string]T, error) {
+		table := tableNameGen[T]()
 		var rows []idDataType
-		query := fmt.Sprintf("SELECT %s, data FROM %s WHERE %s IN (SELECT value FROM json_each(?))", idColumnName[table], table, idColumnName[table])
+		query := fmt.Sprintf("SELECT oid, version, data FROM %s WHERE oid IN (SELECT value FROM json_each(?))", table)
 		tx.Select(&rows, query, ids)
-		rtnMap := make(map[string]*T)
+		rtnMap := make(map[string]T)
 		for _, row := range rows {
-			if row.Id == "" || row.Data == "" {
+			if row.OId == "" || len(row.Data) == 0 {
 				continue
 			}
-			r := TxReadJson[T](tx, row.Data)
-			if r == nil {
-				continue
+			waveObj, err := waveobj.FromJsonGen[T](row.Data)
+			if err != nil {
+				return nil, err
 			}
-			rtnMap[(*r).GetId()] = r
+			waveobj.SetVersion(waveObj, row.Version)
+			rtnMap[row.OId] = waveObj
 		}
 		return rtnMap, nil
 	})
 }
 
-func DBDelete[T ObjectWithId](ctx context.Context, id string) error {
+func DBDelete[T waveobj.WaveObj](ctx context.Context, id string) error {
 	return WithTx(ctx, func(tx *TxWrap) error {
-		var rtn T
-		table := typeToTable[reflect.TypeOf(rtn)]
-		if table == "" {
-			return fmt.Errorf("unknown table type: %T", rtn)
-		}
-		query := fmt.Sprintf("DELETE FROM %s WHERE %s = ?", table, idColumnName[table])
+		table := tableNameGen[T]()
+		query := fmt.Sprintf("DELETE FROM %s WHERE oid = ?", table)
 		tx.Exec(query, id)
 		return nil
 	})
 }
 
-func DBUpdate[T ObjectWithId](ctx context.Context, val *T) error {
-	if val == nil {
-		return fmt.Errorf("cannot update nil value")
-	}
-	if (*val).GetId() == "" {
+func DBUpdate(ctx context.Context, val waveobj.WaveObj) error {
+	oid := waveobj.GetOID(val)
+	if oid == "" {
 		return fmt.Errorf("cannot update %T value with empty id", val)
 	}
+	jsonData, err := waveobj.ToJson(val)
+	if err != nil {
+		return err
+	}
 	return WithTx(ctx, func(tx *TxWrap) error {
-		table := typeToTable[reflect.TypeOf(*val)]
-		if table == "" {
-			return fmt.Errorf("unknown table type: %T", *val)
-		}
-		query := fmt.Sprintf("UPDATE %s SET data = ? WHERE %s = ?", table, idColumnName[table])
-		tx.Exec(query, TxJson(tx, val), (*val).GetId())
+		table := waveObjTableName(val)
+		query := fmt.Sprintf("UPDATE %s SET data = ?, version = version+1 WHERE oid = ?", table)
+		tx.Exec(query, jsonData, oid)
 		return nil
 	})
 }
 
-func DBInsert[T ObjectWithId](ctx context.Context, val *T) error {
-	if val == nil {
-		return fmt.Errorf("cannot insert nil value")
-	}
-	if (*val).GetId() == "" {
+func DBInsert[T waveobj.WaveObj](ctx context.Context, val T) error {
+	oid := waveobj.GetOID(val)
+	if oid == "" {
 		return fmt.Errorf("cannot insert %T value with empty id", val)
 	}
+	jsonData, err := waveobj.ToJson(val)
+	if err != nil {
+		return err
+	}
 	return WithTx(ctx, func(tx *TxWrap) error {
-		table := typeToTable[reflect.TypeOf(*val)]
-		if table == "" {
-			return fmt.Errorf("unknown table type: %T", *val)
-		}
-		query := fmt.Sprintf("INSERT INTO %s (%s, data) VALUES (?, ?)", table, idColumnName[table])
-		tx.Exec(query, (*val).GetId(), TxJson(tx, val))
+		table := waveObjTableName(val)
+		query := fmt.Sprintf("INSERT INTO %s (oid, version, data) VALUES (?, ?, ?)", table)
+		tx.Exec(query, oid, 1, jsonData)
 		return nil
 	})
 }

pkg/wstore/wstore_dbsetup.go

@@ -5,7 +5,6 @@ package wstore
 
 import (
 	"context"
-	"encoding/json"
 	"fmt"
 	"log"
 	"path"
@@ -63,24 +62,3 @@ func WithTx(ctx context.Context, fn func(tx *TxWrap) error) error {
 func WithTxRtn[RT any](ctx context.Context, fn func(tx *TxWrap) (RT, error)) (RT, error) {
 	return txwrap.WithTxRtn(ctx, globalDB, fn)
 }
-
-func TxJson(tx *TxWrap, v any) string {
-	barr, err := json.Marshal(v)
-	if err != nil {
-		tx.SetErr(fmt.Errorf("json marshal (%T): %w", v, err))
-		return ""
-	}
-	return string(barr)
-}
-
-func TxReadJson[T any](tx *TxWrap, jsonData string) *T {
-	if jsonData == "" {
-		return nil
-	}
-	var v T
-	err := json.Unmarshal([]byte(jsonData), &v)
-	if err != nil {
-		tx.SetErr(fmt.Errorf("json unmarshal (%T): %w", v, err))
-	}
-	return &v
-}