org.h2.table

类 IndexColumn

java.lang.Object

org.h2.table.IndexColumn

public class IndexColumn
extends Object

This represents a column item of an index. This is required because some indexes support descending sorted columns.

字段概要

字段

限定符和类型	字段和说明
Column	column The column, or null if not set.
String	columnName The column name.
int	sortType The sort type.

构造器概要

构造器

构造器和说明
IndexColumn()

方法概要

限定符和类型	方法和说明
String	getSQL() Get the SQL snippet for this index column.
static void	mapColumns(IndexColumn[] indexColumns, Table table) Map the columns using the column names and the specified table.
String	toString()
static IndexColumn[]	wrap(Column[] columns) Create an array of index columns from a list of columns.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

字段详细资料

columnName

public String columnName

The column name.

column

public Column column

The column, or null if not set.

sortType

public int sortType

The sort type. Ascending (the default) and descending are supported; nulls can be sorted first or last.

构造器详细资料

IndexColumn

public IndexColumn()

方法详细资料

getSQL

public String getSQL()

Get the SQL snippet for this index column.

返回:

the SQL snippet

wrap

public static IndexColumn[] wrap(Column[] columns)

Create an array of index columns from a list of columns. The default sort type is used.

参数:

columns - the column list

返回:

the index column array

mapColumns

public static void mapColumns(IndexColumn[] indexColumns,
                              Table table)

Map the columns using the column names and the specified table.

参数:

indexColumns - the column list with column names set

table - the table from where to map the column names to columns

toString

public String toString()

覆盖:

toString 在类中 Object