程序包 ohos.sysappcomponents.calendar

类 CalendarDataHelper.InstancesDataHelper

java.lang.Object

ohos.sysappcomponents.calendar.CalendarDataHelper.InstancesDataHelper

封闭类:

CalendarDataHelper

public class CalendarDataHelper.InstancesDataHelper
extends Object

Provides utilities for operating calendar instance data in a certain period of time.

从以下版本开始:

3

方法概要

限定符和类型	方法	说明
CalendarCollection	query(DataAbilityPredicates predicates, String[] columns, long begin, long end)	Queries database instance data based on predicates, columns, and the range specified by begin and end.
boolean	release()	Releases the client resource of the Data ability.

从类继承的方法 java.lang.Object

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

方法详细资料

query

public CalendarCollection query(DataAbilityPredicates predicates,
                                String[] columns,
                                long begin,
                                long end)
                         throws DataAbilityRemoteException

Queries database instance data based on predicates, columns, and the range specified by begin and end.

参数:

predicates - Indicates the filter conditions. Applications can query data using exact match, fuzzy match, or aggregation.

columns - Indicates the fields to obtain.

begin - Indicates the start query range.

end - Indicates the end query range.

返回:

Returns the database instance data.

抛出:

DataAbilityRemoteException - Throws this exception if a remote process exception occurs.

从以下版本开始:

3

release

public boolean release()

Releases the client resource of the Data ability.

返回:

true if the resource is successfully released; returns false otherwise.