func analyzeFrom(tableExprs sqlparser.TableExprs) (tablename string, hasHints bool) {
if len(tableExprs) > 1 {
return "", false
}
node, ok := tableExprs[0].(*sqlparser.AliasedTableExpr)
if !ok {
return "", false
}
return sqlparser.GetTableName(node.Expr), node.Hints != nil
}
func analyzeDelete(del *sqlparser.Delete, args []string, user *client.Client) (plan *ExecPlan, err error) {
// Default plan
plan = &ExecPlan{
PlanId: PLAN_PASS_DML,
FullQuery: GenerateFullQuery(del),
}
tableName := sqlparser.GetTableName(del.Table)
if tableName == "" {
plan.Reason = REASON_TABLE
return plan, nil
}
plan.Core = NewDeleteDML(del, tableName, args, user)
return plan, nil
}
func analyzeInsert(ins *sqlparser.Insert, args []string, user *client.Client) (plan *ExecPlan, err error) {
plan = &ExecPlan{
PlanId: PLAN_PASS_DML,
FullQuery: GenerateFullQuery(ins),
}
tableName := sqlparser.GetTableName(ins.Table)
if tableName == "" {
plan.Reason = REASON_TABLE
return plan, nil
}
plan.Core = NewInsertDML(ins, tableName, args, user)
return plan, nil
}
func analyzeUpdate(upd *sqlparser.Update, args []string, user *client.Client) (plan *ExecPlan, err error) {
// Default plan
plan = &ExecPlan{
PlanId: PLAN_PASS_DML,
FullQuery: GenerateFullQuery(upd),
}
tableName := sqlparser.GetTableName(upd.Table)
if tableName == "" {
plan.Reason = REASON_TABLE
return plan, nil
}
plan.Core = NewUpdateDML(upd, tableName, args, user)
/*
conditions := analyzeWhere(upd.Where)
if conditions == nil {
plan.Reason = REASON_WHERE
return plan, nil
}*/
return plan, nil
}