Add the ability to fully customize jet generated files.
This commit is contained in:
go-jet
parent
caa81930dc
commit
8864667f47
40 changed files with 2274 additions and 882 deletions
269
generator/template/process.go
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269
generator/template/process.go
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@ -0,0 +1,269 @@
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package template
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import (
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"bytes"
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"fmt"
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"github.com/go-jet/jet/v2/generator/metadata"
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"github.com/go-jet/jet/v2/internal/jet"
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"github.com/go-jet/jet/v2/internal/utils"
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"github.com/go-jet/jet/v2/internal/utils/throw"
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"path"
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"strings"
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"text/template"
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)
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// ProcessSchema will process schema metadata and constructs go files using generator Template
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func ProcessSchema(dirPath string, schemaMetaData metadata.Schema, generatorTemplate Template) {
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if schemaMetaData.IsEmpty() {
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return
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}
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schemaTemplate := generatorTemplate.Schema(schemaMetaData)
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schemaPath := path.Join(dirPath, schemaTemplate.Path)
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fmt.Println("Destination directory:", schemaPath)
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fmt.Println("Cleaning up destination directory...")
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err := utils.CleanUpGeneratedFiles(schemaPath)
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throw.OnError(err)
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processModel(schemaPath, schemaMetaData, schemaTemplate)
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processSQLBuilder(schemaPath, generatorTemplate.Dialect, schemaMetaData, schemaTemplate)
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}
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func processModel(dirPath string, schemaMetaData metadata.Schema, schemaTemplate Schema) {
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modelTemplate := schemaTemplate.Model
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if modelTemplate.Skip {
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fmt.Println("Skipping the generation of model types.")
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return
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}
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modelDirPath := path.Join(dirPath, modelTemplate.Path)
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err := utils.EnsureDirPath(modelDirPath)
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throw.OnError(err)
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processTableModels("table", modelDirPath, schemaMetaData.TablesMetaData, modelTemplate)
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processTableModels("view", modelDirPath, schemaMetaData.ViewsMetaData, modelTemplate)
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processEnumModels(modelDirPath, schemaMetaData.EnumsMetaData, modelTemplate)
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}
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func processSQLBuilder(dirPath string, dialect jet.Dialect, schemaMetaData metadata.Schema, schemaTemplate Schema) {
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sqlBuilderTemplate := schemaTemplate.SQLBuilder
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if sqlBuilderTemplate.Skip {
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fmt.Println("Skipping the generation of SQL Builder types.")
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return
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}
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sqlBuilderPath := path.Join(dirPath, sqlBuilderTemplate.Path)
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processTableSQLBuilder("table", sqlBuilderPath, dialect, schemaMetaData, schemaMetaData.TablesMetaData, sqlBuilderTemplate)
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processTableSQLBuilder("view", sqlBuilderPath, dialect, schemaMetaData, schemaMetaData.ViewsMetaData, sqlBuilderTemplate)
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processEnumSQLBuilder(sqlBuilderPath, dialect, schemaMetaData.EnumsMetaData, sqlBuilderTemplate)
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}
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func processEnumSQLBuilder(dirPath string, dialect jet.Dialect, enumsMetaData []metadata.Enum, sqlBuilder SQLBuilder) {
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if len(enumsMetaData) == 0 {
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return
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}
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fmt.Printf("Generating enum sql builder files\n")
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for _, enumMetaData := range enumsMetaData {
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enumTemplate := sqlBuilder.Enum(enumMetaData)
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if enumTemplate.Skip {
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continue
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}
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enumSQLBuilderPath := path.Join(dirPath, enumTemplate.Path)
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err := utils.EnsureDirPath(enumSQLBuilderPath)
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throw.OnError(err)
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text, err := generateTemplate(
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autoGenWarningTemplate+enumSQLBuilderTemplate,
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enumMetaData,
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template.FuncMap{
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"package": func() string {
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return enumTemplate.PackageName()
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},
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"dialect": func() jet.Dialect {
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return dialect
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},
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"enumTemplate": func() EnumSQLBuilder {
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return enumTemplate
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},
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"enumValueName": func(enumValue string) string {
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return enumTemplate.ValueName(enumValue)
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},
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})
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throw.OnError(err)
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err = utils.SaveGoFile(enumSQLBuilderPath, enumTemplate.FileName, text)
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throw.OnError(err)
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}
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}
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func processTableSQLBuilder(fileTypes, dirPath string,
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dialect jet.Dialect,
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schemaMetaData metadata.Schema,
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tablesMetaData []metadata.Table,
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sqlBuilderTemplate SQLBuilder) {
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if len(tablesMetaData) == 0 {
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return
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}
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fmt.Printf("Generating %s sql builder files\n", fileTypes)
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for _, tableMetaData := range tablesMetaData {
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var tableSQLBuilderTemplate TableSQLBuilder
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if fileTypes == "view" {
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tableSQLBuilderTemplate = sqlBuilderTemplate.View(tableMetaData)
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} else {
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tableSQLBuilderTemplate = sqlBuilderTemplate.Table(tableMetaData)
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}
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if tableSQLBuilderTemplate.Skip {
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continue
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}
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tableSQLBuilderPath := path.Join(dirPath, tableSQLBuilderTemplate.Path)
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err := utils.EnsureDirPath(tableSQLBuilderPath)
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throw.OnError(err)
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text, err := generateTemplate(
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autoGenWarningTemplate+getTableSQLBuilderTemplate(dialect),
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tableMetaData,
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template.FuncMap{
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"package": func() string {
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return tableSQLBuilderTemplate.PackageName()
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},
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"dialect": func() jet.Dialect {
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return dialect
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},
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"schemaName": func() string {
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return schemaMetaData.Name
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},
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"tableTemplate": func() TableSQLBuilder {
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return tableSQLBuilderTemplate
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},
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"structImplName": func() string { // postgres only
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structName := tableSQLBuilderTemplate.TypeName
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return string(strings.ToLower(structName)[0]) + structName[1:]
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},
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"columnField": func(columnMetaData metadata.Column) TableSQLBuilderColumn {
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return tableSQLBuilderTemplate.Column(columnMetaData)
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},
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})
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throw.OnError(err)
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err = utils.SaveGoFile(tableSQLBuilderPath, tableSQLBuilderTemplate.FileName, text)
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throw.OnError(err)
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}
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}
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func getTableSQLBuilderTemplate(dialect jet.Dialect) string {
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if dialect.Name() == "PostgreSQL" {
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return tablePostgreSQLBuilderTemplate
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}
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return tableSQLBuilderTemplate
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}
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func processTableModels(fileTypes, modelDirPath string, tablesMetaData []metadata.Table, modelTemplate Model) {
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if len(tablesMetaData) == 0 {
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return
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}
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fmt.Printf("Generating %s model files...\n", fileTypes)
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for _, tableMetaData := range tablesMetaData {
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var tableTemplate TableModel
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if fileTypes == "table" {
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tableTemplate = modelTemplate.Table(tableMetaData)
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} else {
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tableTemplate = modelTemplate.View(tableMetaData)
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}
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if tableTemplate.Skip {
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continue
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}
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text, err := generateTemplate(
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autoGenWarningTemplate+tableModelFileTemplate,
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tableMetaData,
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template.FuncMap{
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"package": func() string {
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return modelTemplate.PackageName()
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},
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"modelImports": func() []string {
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return getTableModelImports(tableTemplate, tableMetaData)
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},
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"tableTemplate": func() TableModel {
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return tableTemplate
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},
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"structField": func(columnMetaData metadata.Column) TableModelField {
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return tableTemplate.Field(columnMetaData)
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},
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})
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throw.OnError(err)
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err = utils.SaveGoFile(modelDirPath, tableTemplate.FileName, text)
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throw.OnError(err)
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}
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}
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func processEnumModels(modelDir string, enumsMetaData []metadata.Enum, modelTemplate Model) {
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if len(enumsMetaData) == 0 {
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return
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}
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fmt.Print("Generating enum model files...\n")
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for _, enumMetaData := range enumsMetaData {
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enumTemplate := modelTemplate.Enum(enumMetaData)
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if enumTemplate.Skip {
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continue
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}
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text, err := generateTemplate(
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autoGenWarningTemplate+enumModelTemplate,
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enumMetaData,
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template.FuncMap{
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"package": func() string {
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return modelTemplate.PackageName()
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},
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"enumTemplate": func() EnumModel {
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return enumTemplate
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},
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"valueName": func(value string) string {
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return enumTemplate.ValueName(value)
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},
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})
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throw.OnError(err)
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err = utils.SaveGoFile(modelDir, enumTemplate.FileName, text)
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throw.OnError(err)
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}
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}
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func generateTemplate(templateText string, templateData interface{}, funcMap template.FuncMap) ([]byte, error) {
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t, err := template.New("sqlBuilderTableTemplate").Funcs(funcMap).Parse(templateText)
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if err != nil {
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return nil, err
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}
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var buf bytes.Buffer
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if err := t.Execute(&buf, templateData); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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