Initial source commit

orm.go

@@ -0,0 +1,59 @@
+// Package simpleorm provies a simple, basic ORM functionalities for making
+// interaction with relational databses easier.
+package simpleorm
+
+import (
+	"reflect"
+	"strings"
+
+	log "gitlab.com/gdulai/simpleloglvl"
+)
+
+// Type to access the ORM functionalities in a structured manner-
+type ORM struct {
+	cache *OrmCache
+}
+
+// Inits the ORM library.
+// Param objs is an array which should be an array of the types which describe the tables.
+func NewORM(objs ...any) *ORM {
+	var parsers []*Parser
+	var tables []*Table
+	for _, obj := range objs {
+		log.LogDebug("[ORM] Mapping type for: %s", reflect.TypeOf(obj).Name())
+		parser := NewParser(obj)
+		parsers = append(parsers, parser)
+		tables = append(tables, parser.ParseColumns())
+	}
+
+	log.LogDebug("[ORM] Tables initiated, creating cache.")
+
+	// Create cache with the initialized tables
+	cache := NewOrmCache(tables)
+
+	log.LogDebug("[ORM] Cache created.")
+
+	// Finish the parsing with the constraints and add the to the tables
+	for _, parser := range parsers {
+		log.LogDebug("[ORM] Parsing constraing for: %s", parser.Table.Name)
+		parser.ParseConstraints(cache)
+		log.LogDebug("[ORM] Parsed constraints for: %s", parser.Table.Name)
+	}
+
+	return &ORM{cache: cache}
+}
+
+func (orm *ORM) CreateDDL() string {
+	var ddl strings.Builder
+
+	tables := orm.cache.GetAll()
+
+	for i, table := range tables {
+		if i != 0 {
+			ddl.WriteString("\n")
+		}
+		ddl.WriteString(table.ToDDL())
+	}
+
+	return ddl.String()
+}