org.h2.mvstore.db

类 MVTempResult

java.lang.Object

org.h2.mvstore.db.MVTempResult

所有已实现的接口:

ResultExternal

public abstract class MVTempResult
extends Object
implements ResultExternal

Temporary result.

A separate MVStore in a temporary file is used for each result. The file is removed when this result and all its copies are closed. TempFileDeleter is also used to delete this file if results are not closed properly.

方法概要

限定符和类型	方法和说明
int	addRows(Collection<Value[]> rows) Add a number of rows to the result.
void	close() Close this object and delete the temporary file.
static ResultExternal	of(Database database, Expression[] expressions, boolean distinct, int[] distinctIndexes, int visibleColumnCount, int resultColumnCount, SortOrder sort) Creates MVStore-based temporary result.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.h2.result.ResultExternal

addRow, contains, createShallowCopy, next, removeRow, reset

方法详细资料

of

public static ResultExternal of(Database database,
                                Expression[] expressions,
                                boolean distinct,
                                int[] distinctIndexes,
                                int visibleColumnCount,
                                int resultColumnCount,
                                SortOrder sort)

Creates MVStore-based temporary result.

参数:

database - database

expressions - expressions

distinct - is output distinct

distinctIndexes - indexes of distinct columns for DISTINCT ON results

visibleColumnCount - count of visible columns

resultColumnCount - the number of columns including visible columns and additional virtual columns for ORDER BY and DISTINCT ON clauses

sort - sort order, or null

返回:

temporary result

addRows

public int addRows(Collection<Value[]> rows)

从接口复制的说明: ResultExternal

Add a number of rows to the result.

指定者:

addRows 在接口中 ResultExternal

参数:

rows - the list of rows to add

返回:

the new number of rows in this object

close

public void close()

从接口复制的说明: ResultExternal

Close this object and delete the temporary file.

指定者:

close 在接口中 ResultExternal