forked from mystiq/dex
84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
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// Copyright 2012 James Cooper. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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// Package gorp provides a simple way to marshal Go structs to and from
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// SQL databases. It uses the database/sql package, and should work with any
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// compliant database/sql driver.
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//
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// Source code and project home:
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// https://github.com/go-gorp/gorp
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//
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package gorp
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import "reflect"
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// ColumnMap represents a mapping between a Go struct field and a single
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// column in a table.
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// Unique and MaxSize only inform the
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// CreateTables() function and are not used by Insert/Update/Delete/Get.
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type ColumnMap struct {
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// Column name in db table
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ColumnName string
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// If true, this column is skipped in generated SQL statements
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Transient bool
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// If true, " unique" is added to create table statements.
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// Not used elsewhere
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Unique bool
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// Query used for getting generated id after insert
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GeneratedIdQuery string
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// Passed to Dialect.ToSqlType() to assist in informing the
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// correct column type to map to in CreateTables()
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MaxSize int
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DefaultValue string
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fieldName string
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gotype reflect.Type
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isPK bool
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isAutoIncr bool
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isNotNull bool
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}
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// Rename allows you to specify the column name in the table
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//
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// Example: table.ColMap("Updated").Rename("date_updated")
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//
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func (c *ColumnMap) Rename(colname string) *ColumnMap {
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c.ColumnName = colname
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return c
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}
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// SetTransient allows you to mark the column as transient. If true
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// this column will be skipped when SQL statements are generated
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func (c *ColumnMap) SetTransient(b bool) *ColumnMap {
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c.Transient = b
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return c
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}
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// SetUnique adds "unique" to the create table statements for this
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// column, if b is true.
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func (c *ColumnMap) SetUnique(b bool) *ColumnMap {
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c.Unique = b
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return c
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}
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// SetNotNull adds "not null" to the create table statements for this
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// column, if nn is true.
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func (c *ColumnMap) SetNotNull(nn bool) *ColumnMap {
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c.isNotNull = nn
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return c
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}
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// SetMaxSize specifies the max length of values of this column. This is
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// passed to the dialect.ToSqlType() function, which can use the value
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// to alter the generated type for "create table" statements
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func (c *ColumnMap) SetMaxSize(size int) *ColumnMap {
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c.MaxSize = size
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return c
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}
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