程序包 ohos.data.search.model

类 IndexData

java.lang.Object

ohos.data.search.model.IndexData

直接已知子类:

Schema

public class IndexData
extends Object

Represents a container that stores index data.

The index data is in key-value pair format. Neither the key nor value can be null. Currently, five data types are supported: string, integer, long, double, and float.

从以下版本开始:

3

SystemCapability

SystemCapability.Data#DATA_SEARCH

构造器概要

构造器

构造器	说明
IndexData()	An no-argument constructor used to create an IndexData instance.

方法概要

限定符和类型	方法	说明
void	clear()	Clears this container.
Object	get(String key)	Obtains the value matching a specified key.
Double	getAsDouble(String key)	Obtains the value matching a specified key and converts it into a double value.
Float	getAsFloat(String key)	Obtains the value matching a specified key and converts it into a float value.
Integer	getAsInteger(String key)	Obtains the value matching a specified key and converts it into an integer value.
Long	getAsLong(String key)	Obtains the value matching a specified key and converts it into a long value.
String	getAsString(String key)	Obtains the value matching a specified key and converts it into a string value.
Map<String,Object>	getValues()	Obtains a container that stores key-value pairs.
boolean	isEmpty()	Checks whether this container is empty.
void	put(String key, Double value)	Stores a key-value pair with a string key and a double value.
void	put(String key, Float value)	Stores a key-value pair with a string key and a float value.
void	put(String key, Integer value)	Stores a key-value pair with a string key and an integer value.
void	put(String key, Long value)	Stores a key-value pair with a string key and a long value.
void	put(String key, String value)	Stores a string key-value pair.
void	remove(String key)	Deletes the key-value pair with a specified key.
void	setValues(Map<String,Object> values)	Sets a container to store key-value pairs.
int	size()	Obtains the number of key-value pairs stored in this container.

从类继承的方法 java.lang.Object

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

构造器详细资料

IndexData

public IndexData()

An no-argument constructor used to create an IndexData instance.

从以下版本开始:

3

方法详细资料

getValues

public Map<String,Object> getValues()

Obtains a container that stores key-value pairs.

返回:

Returns the container that stores key-value pairs.

从以下版本开始:

3

setValues

public void setValues(Map<String,Object> values)

Sets a container to store key-value pairs.

参数:

values - Indicates the container to set.

从以下版本开始:

3

size

public int size()

Obtains the number of key-value pairs stored in this container.

返回:

Returns the number of key-value pairs stored in this container.

从以下版本开始:

3

isEmpty

public boolean isEmpty()

Checks whether this container is empty.

返回:

Returns true if this container is empty; returns false otherwise.

从以下版本开始:

3

remove

public void remove(String key)

Deletes the key-value pair with a specified key.

参数:

key - Indicates the key of the key-value pair to delete.

从以下版本开始:

3

clear

public void clear()

Clears this container.

从以下版本开始:

3

put

public void put(String key,
                String value)

Stores a string key-value pair.

参数:

key - Indicates the key to store.

value - Indicates the value to store.

从以下版本开始:

3

put

public void put(String key,
                Integer value)

Stores a key-value pair with a string key and an integer value.

参数:

key - Indicates the key to store.

value - Indicates the value to store.

从以下版本开始:

3

put

public void put(String key,
                Float value)

Stores a key-value pair with a string key and a float value.

参数:

key - Indicates the key to store.

value - Indicates the value to store.

从以下版本开始:

3

put

public void put(String key,
                Double value)

Stores a key-value pair with a string key and a double value.

参数:

key - Indicates the key to store.

value - Indicates the value to store.

从以下版本开始:

3

put

public void put(String key,
                Long value)

Stores a key-value pair with a string key and a long value.

参数:

key - Indicates the key to store.

value - Indicates the value to store.

从以下版本开始:

3

get

public Object get(String key)

Obtains the value matching a specified key.

参数:

key - Indicates the key to match.

返回:

Returns the matching value.

从以下版本开始:

3

getAsString

public String getAsString(String key)

Obtains the value matching a specified key and converts it into a string value.

参数:

key - Indicates the key to match.

返回:

Returns the matching value of the string type if it is found; returns null if no value matches the specified key.

从以下版本开始:

3

getAsInteger

public Integer getAsInteger(String key)

Obtains the value matching a specified key and converts it into an integer value.

参数:

key - Indicates the key to match.

返回:

Returns the matching value of the integer type if it is found; returns null if no value matches the specified key or the value found cannot be converted into an integer value.

从以下版本开始:

3

getAsFloat

public Float getAsFloat(String key)

Obtains the value matching a specified key and converts it into a float value.

参数:

key - Indicates the key to match.

返回:

Returns the matching value of the float type if it is found; returns null if no value matches the specified key or the value found cannot be converted into a float value.

从以下版本开始:

3

getAsDouble

public Double getAsDouble(String key)

Obtains the value matching a specified key and converts it into a double value.

参数:

key - Indicates the key to match.

返回:

Returns the matching value of the double type if it is found; returns null if no value matches the specified key or the value found cannot be converted into a double value.

从以下版本开始:

3

getAsLong

public Long getAsLong(String key)

Obtains the value matching a specified key and converts it into a long value.

参数:

key - Indicates the key to match.

返回:

Returns the matching value of the long type if it is found; returns null if no value matches the specified key or the value found cannot be converted into a long value.

从以下版本开始:

3