pki/vendor/xorm.io/xorm/internal/statements/join.go

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2022-11-02 17:49:03 +01:00
// Copyright 2022 The Xorm Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package statements
import (
"fmt"
"strings"
"xorm.io/builder"
"xorm.io/xorm/dialects"
"xorm.io/xorm/internal/utils"
"xorm.io/xorm/schemas"
)
// Join The joinOP should be one of INNER, LEFT OUTER, CROSS etc - this will be prepended to JOIN
func (statement *Statement) Join(joinOP string, tablename interface{}, condition string, args ...interface{}) *Statement {
var buf strings.Builder
if len(statement.JoinStr) > 0 {
fmt.Fprintf(&buf, "%v %v JOIN ", statement.JoinStr, joinOP)
} else {
fmt.Fprintf(&buf, "%v JOIN ", joinOP)
}
switch tp := tablename.(type) {
case builder.Builder:
subSQL, subQueryArgs, err := tp.ToSQL()
if err != nil {
statement.LastError = err
return statement
}
fields := strings.Split(tp.TableName(), ".")
aliasName := statement.dialect.Quoter().Trim(fields[len(fields)-1])
aliasName = schemas.CommonQuoter.Trim(aliasName)
fmt.Fprintf(&buf, "(%s) %s ON %v", statement.ReplaceQuote(subSQL), statement.quote(aliasName), statement.ReplaceQuote(condition))
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
case *builder.Builder:
subSQL, subQueryArgs, err := tp.ToSQL()
if err != nil {
statement.LastError = err
return statement
}
fields := strings.Split(tp.TableName(), ".")
aliasName := statement.dialect.Quoter().Trim(fields[len(fields)-1])
aliasName = schemas.CommonQuoter.Trim(aliasName)
fmt.Fprintf(&buf, "(%s) %s ON %v", statement.ReplaceQuote(subSQL), statement.quote(aliasName), statement.ReplaceQuote(condition))
statement.joinArgs = append(statement.joinArgs, subQueryArgs...)
default:
tbName := dialects.FullTableName(statement.dialect, statement.tagParser.GetTableMapper(), tablename, true)
if !utils.IsSubQuery(tbName) {
var buf strings.Builder
_ = statement.dialect.Quoter().QuoteTo(&buf, tbName)
tbName = buf.String()
} else {
tbName = statement.ReplaceQuote(tbName)
}
fmt.Fprintf(&buf, "%s ON %v", tbName, statement.ReplaceQuote(condition))
}
statement.JoinStr = buf.String()
statement.joinArgs = append(statement.joinArgs, args...)
return statement
}
func (statement *Statement) writeJoin(w builder.Writer) error {
if statement.JoinStr != "" {
if _, err := fmt.Fprint(w, " ", statement.JoinStr); err != nil {
return err
}
w.Append(statement.joinArgs...)
}
return nil
}