Parse 字段 新思路

rocksdb.go

@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/tecbot/gorocksdb"
@@ -51,19 +53,57 @@ type Metadata struct {
 	tidCount uint32 // int16
 }
 
-type Field struct {
+type ValueType int
-	Key string
 
-	ValueType int
+const (
-	ID        int
+	VT_INT ValueType = 10000 + iota
+	VT_INT8
+	VT_INT16
+	VT_INT32
+	VT_INT64
+)
+
+const (
+	VT_UINT ValueType = 11000 + iota
+	VT_UINT8
+	VT_UINT16
+	VT_UINT32
+	VT_UINT64
+)
+
+const (
+	VT_CHAR ValueType = 12000 + iota
+	VT_VARCHAR
+	VT_TEXT
+)
+
+const (
+	VT_TIMESTAMP ValueType = 13000 + iota
+	VT_DATE
+)
+
+type Field struct {
+	Key []byte
+
+	VT ValueType
+	ID uint16
 
 	IsIndex  bool
 	IsUnique bool
 }
 
+// Parse 从字符串中解析 var a int; a = 0; a < 0 && a > 5 ;
+func (field *Field) Parse(code string) {
+
+}
+
+// Table 表结构
 type Table struct {
+	tableLock *sync.Mutex
+
 	Name string
 	Type int
+
 	ID uint32 // uint16
 
 	IsAllKey bool
@@ -75,17 +115,36 @@ type Table struct {
 	delCount uint64
 }
 
-func CreateTable(name string, field []*Field) {
+// CreateField 创建字段
+func (table *Table) CreateField(key []byte, vt ValueType, isIndex bool, isUnique bool) *Field {
+
+	table.tableLock.Lock()
+	defer table.tableLock.Unlock()
+
+	field := &Field{}
+	field.ID = table.fidCount
+	field.IsIndex = isIndex
+	field.IsUnique = isUnique
+	field.Key = key
+	field.VT = vt
+
+	table.fidCount++
+
+	return field
+}
+
+// CreateTable 创建表
+func CreateTable(name string, fields []*Field) {
 	if _, ok := EDB.TableDict[name]; !ok {
-		// ntid := atomic.AddUint32(&EDB.Metadata.tidCount, 1)
+		ntid := atomic.AddUint32(&EDB.Metadata.tidCount, 1)
-		// table := &Table{Name: name, ID: ntid, Type: 1}
+		table := &Table{Name: name, ID: ntid, Type: 1}
+		table.Fields = fields
 	} else {
 		log.Println("table name is exists")
 	}
 
 }
 
-// gson
 // OpenDataBase (cf-key.{tableid(2)}{fieldid(2)}) {value}{indexid(6)} = {rowid(6)} (cf-row.{tableid(2)} {row-sharding-id}){rowid(6)} = {values}
 func OpenDataBase() (*gorocksdb.DB, []*gorocksdb.ColumnFamilyHandle) {