filer store: add mysql2

weed/filer/mysql/mysql_sql_gen.go

@@ -0,0 +1,52 @@
+package mysql
+
+import (
+	"fmt"
+	"github.com/chrislusf/seaweedfs/weed/filer/abstract_sql"
+	_ "github.com/go-sql-driver/mysql"
+)
+
+type SqlGenMysql struct {
+	CreateTableSqlTemplate string
+	DropTableSqlTemplate   string
+}
+
+var (
+	_ = abstract_sql.SqlGenerator(&SqlGenMysql{})
+)
+
+func (gen *SqlGenMysql) GetSqlInsert(bucket string) string {
+	return fmt.Sprintf("INSERT INTO %s (dirhash,name,directory,meta) VALUES(?,?,?,?)", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlUpdate(bucket string) string {
+	return fmt.Sprintf("UPDATE %s SET meta=? WHERE dirhash=? AND name=? AND directory=?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlFind(bucket string) string {
+	return fmt.Sprintf("SELECT meta FROM %s WHERE dirhash=? AND name=? AND directory=?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlDelete(bucket string) string {
+	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=? AND name=? AND directory=?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlDeleteFolderChildren(bucket string) string {
+	return fmt.Sprintf("DELETE FROM %s WHERE dirhash=? AND directory=?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlListExclusive(bucket string) string {
+	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=? AND name>? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlListInclusive(bucket string) string {
+	return fmt.Sprintf("SELECT NAME, meta FROM %s WHERE dirhash=? AND name>=? AND directory=? AND name like ? ORDER BY NAME ASC LIMIT ?", bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlCreateTable(bucket string) string {
+	return fmt.Sprintf(gen.CreateTableSqlTemplate, bucket)
+}
+
+func (gen *SqlGenMysql) GetSqlDropTable(bucket string) string {
+	return fmt.Sprintf(gen.DropTableSqlTemplate, bucket)
+}