PersistablePacMap

java.lang.Object
- ohos.utils.BasePacMap
- - ohos.utils.PersistablePacMap

所有已实现的接口:

Cloneable, Sequenceable
```
public class PersistablePacMap
extends BasePacMap
```
Extends the BasePacMap class and permanently stores data using the JSON string representation.

从以下版本开始:

3

另请参阅:

BasePacMap

嵌套类概要
- 从接口继承的嵌套类/接口 ohos.utils.Sequenceable
  Sequenceable.Producer<T>

字段概要
- 从类继承的字段 ohos.utils.BasePacMap
  dataMap

构造器概要

构造器
构造器	说明
`PersistablePacMap()`	A constructor used to create an empty `PersistablePacMap` instance.
`PersistablePacMap(int capacity)`	A constructor used to create an empty `PersistablePacMap` instance that contains `capacity` key-value pairs.

方法概要

所有方法静态方法实例方法具体方法
限定符和类型	方法	说明
`PersistablePacMap`	`deepCopy()`	Creates a deep copy of the `PersistablePacMap` object.
`static PersistablePacMap`	`fromJsonString(String jsonString)`	Creates a `PersistablePacMap` object based on a given JSON string.
`boolean[]`	`getBooleanValueArray(String key)`	Overrides the `BasePacMap#getBooleanValueArray` method to obtain the `boolean` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`double`	`getDoubleValue(String key)`	Overrides the `BasePacMap#getDoubleValue` method to obtain the `double` value in the unmarshalled `PersistablePacMap` object where `double` has been converted into `BigDecimal`.
`double[]`	`getDoubleValueArray(String key)`	Overrides the `BasePacMap#getDoubleValueArray` method to obtain the `double` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`float`	`getFloatValue(String key)`	Overrides the `BasePacMap#getFloatValue` method to obtain the `float` value in the unmarshalled `PersistablePacMap` object where `float` has been converted into `BigDecimal`.
`float[]`	`getFloatValueArray(String key)`	Overrides the `BasePacMap#getFloatValueArray` method to obtain the `float` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`int[]`	`getIntValueArray(String key)`	Overrides the `BasePacMap#getIntValueArray` method to obtain the `int` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`long`	`getLongValue(String key)`	Overrides the `BasePacMap#getLongValue` method to obtain the `long` value in the unmarshalled `PersistablePacMap` object where `long` has been converted into `Integer`.
`long[]`	`getLongValueArray(String key)`	Overrides the `BasePacMap#getLongValueArray` method to obtain the `long` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`PersistablePacMap`	`getPersistablePacMap(String key)`	Obtains the `PersistablePacMap` object with the specified `key`.
`short`	`getShortValue(String key)`	Overrides the `BasePacMap#getShortValue` method to obtain the `short` value in the unmarshalled `PersistablePacMap` object where `short` has been converted into `Integer`.
`short[]`	`getShortValueArray(String key)`	Overrides the `BasePacMap#getShortValueArray` method to obtain the `short` array in the unmarshalled `PersistablePacMap` object where an array has been converted into `JsonArray`.
`static boolean`	`isValidValueType(Object value)`	Checks whether the type of the `value` object supports marshalling to and unmarshalling from a JSON string.
`void`	`putPersistablePacMap(String key, PersistablePacMap value)`	Adds a `PersistablePacMap` object with the specified `key` into this `PersistablePacMap` object.
`String`	`toJsonString()`	Obtains the JSON string representation of the `PersistablePacMap` object.

从类继承的方法 ohos.utils.BasePacMap
clear, clone, equals, getAll, getBooleanValue, getBooleanValue, getByteValue, getByteValue, getByteValueArray, getChar, getChar, getCharArray, getClassLoader, getDimension, getDoubleValue, getFloatDimension, getFloatValue, getIntValue, getIntValue, getKeys, getLongValue, getObjectValue, getObjectValue, getPlainArray, getRemoteObject, getShortValue, getSize, getString, getString, getStringArray, hasFileDescriptor, hashCode, hasKey, isEmpty, marshalling, putAll, putAll, putBooleanValue, putBooleanValueArray, putByteValue, putByteValueArray, putChar, putCharArray, putDimension, putDoubleValue, putDoubleValueArray, putFloatDimension, putFloatValue, putFloatValueArray, putIntValue, putIntValueArray, putLongValue, putLongValueArray, putObjectValue, putPlainArray, putRemoteObject, putShortValue, putShortValueArray, putString, putStringArray, remove, setClassLoader, unmarshalling

从类继承的方法 java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - PersistablePacMap
```
public PersistablePacMap()
```
    A constructor used to create an empty PersistablePacMap instance.
    
    从以下版本开始:
    
    3
  - PersistablePacMap
```
public PersistablePacMap(int capacity)
```
    A constructor used to create an empty PersistablePacMap instance that contains capacity key-value pairs.
    
    参数:
    
    capacity - Indicates the number of key-value pairs in the PersistablePacMap instance.
    
    从以下版本开始:
    
    3
- 方法详细资料
  - deepCopy
```
public PersistablePacMap deepCopy()
```
    Creates a deep copy of the PersistablePacMap object.
    A deep copy is performed to create an object with the same content as the original one.
    
    返回:
    
    Returns the deep copy of the PersistablePacMap object.
    
    从以下版本开始:
    
    3
  - isValidValueType
```
public static boolean isValidValueType(Object value)
```
    Checks whether the type of the value object supports marshalling to and unmarshalling from a JSON string.
    
    参数:
    
    value - Indicates the object to check.
    
    返回:
    
    Returns true if the value object supports marshalling and unmarshalling; returns false otherwise.
    
    从以下版本开始:
    
    3
  - putPersistablePacMap
```
public void putPersistablePacMap(String key,
                                 PersistablePacMap value)
```
    Adds a PersistablePacMap object with the specified key into this PersistablePacMap object.
    If the specified key already exists, its value will be replaced by value.
    
    参数:
    
    key - Indicates the key of the object to add.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    getPersistablePacMap(String key)
  - getPersistablePacMap
```
public PersistablePacMap getPersistablePacMap(String key)
```
    Obtains the PersistablePacMap object with the specified key.
    
    参数:
    
    key - Indicates the key used to query the object. The value can be null.
    
    返回:
    
    Returns the PersistablePacMap object matching the specified key; returns null if the matched value is not a PersistablePacMap object or no value is obtained.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    putPersistablePacMap(String key, PersistablePacMap value)
  - getShortValue
```
public short getShortValue(String key)
```
    Overrides the BasePacMap#getShortValue method to obtain the short value in the unmarshalled PersistablePacMap object where short has been converted into Integer.
    
    覆盖:
    
    getShortValue 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the short value to obtain.
    
    返回:
    
    Returns the short value matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getShortValue(String)
  - getLongValue
```
public long getLongValue(String key)
```
    Overrides the BasePacMap#getLongValue method to obtain the long value in the unmarshalled PersistablePacMap object where long has been converted into Integer.
    
    覆盖:
    
    getLongValue 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the long value to obtain.
    
    返回:
    
    Returns the long value matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getLongValue(String)
  - getDoubleValue
```
public double getDoubleValue(String key)
```
    Overrides the BasePacMap#getDoubleValue method to obtain the double value in the unmarshalled PersistablePacMap object where double has been converted into BigDecimal.
    
    覆盖:
    
    getDoubleValue 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the double value to obtain.
    
    返回:
    
    Returns the double value matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getDoubleValue(String)
  - getFloatValue
```
public float getFloatValue(String key)
```
    Overrides the BasePacMap#getFloatValue method to obtain the float value in the unmarshalled PersistablePacMap object where float has been converted into BigDecimal.
    
    覆盖:
    
    getFloatValue 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the float value to obtain.
    
    返回:
    
    Returns the float value matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getFloatValue(String)
  - getIntValueArray
```
public int[] getIntValueArray(String key)
```
    Overrides the BasePacMap#getIntValueArray method to obtain the int array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getIntValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the int array to obtain.
    
    返回:
    
    Returns the int array matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getIntValueArray(String)
  - getShortValueArray
```
public short[] getShortValueArray(String key)
```
    Overrides the BasePacMap#getShortValueArray method to obtain the short array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getShortValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the short array to obtain.
    
    返回:
    
    Returns the short array matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getShortValueArray(String)
  - getLongValueArray
```
public long[] getLongValueArray(String key)
```
    Overrides the BasePacMap#getLongValueArray method to obtain the long array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getLongValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the long array to obtain.
    
    返回:
    
    Returns the long array matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getLongValueArray(String)
  - getBooleanValueArray
```
public boolean[] getBooleanValueArray(String key)
```
    Overrides the BasePacMap#getBooleanValueArray method to obtain the boolean array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getBooleanValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the boolean array to obtain.
    
    返回:
    
    Returns the boolean array matching the specified key; returns null if the JsonArray value in the unmarshalled PersistablePacMap object cannot be converted to a boolean array.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getBooleanValueArray(String)
  - getDoubleValueArray
```
public double[] getDoubleValueArray(String key)
```
    Overrides the BasePacMap#getDoubleValueArray method to obtain the double array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getDoubleValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the double array to obtain.
    
    返回:
    
    Returns the double array matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getDoubleValueArray(String)
  - getFloatValueArray
```
public float[] getFloatValueArray(String key)
```
    Overrides the BasePacMap#getFloatValueArray method to obtain the float array in the unmarshalled PersistablePacMap object where an array has been converted into JsonArray.
    
    覆盖:
    
    getFloatValueArray 在类中 BasePacMap
    
    参数:
    
    key - Indicates the key of the float array to obtain.
    
    返回:
    
    Returns the float array matching the specified key.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    BasePacMap.getFloatValueArray(String)
  - fromJsonString
```
public static PersistablePacMap fromJsonString(String jsonString)
```
    Creates a PersistablePacMap object based on a given JSON string.
    
    参数:
    
    jsonString - Indicates the JSON string used to create the PersistablePacMap object.
    
    返回:
    
    Returns a PersistablePacMap object; returns null if the JSON string is invalid.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    toJsonString()
  - toJsonString
```
public String toJsonString()
```
    Obtains the JSON string representation of the PersistablePacMap object. This JSON string can be written into a file for persistent data storage.
    
    返回:
    
    Returns the JSON string representation of the PersistablePacMap object.
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    fromJsonString(java.lang.String)

类 PersistablePacMap

嵌套类概要

从接口继承的嵌套类/接口 ohos.utils.Sequenceable

字段概要

从类继承的字段 ohos.utils.BasePacMap

构造器概要

方法概要

从类继承的方法 ohos.utils.BasePacMap

从类继承的方法 java.lang.Object

构造器详细资料

PersistablePacMap

PersistablePacMap

方法详细资料

deepCopy

isValidValueType

putPersistablePacMap

getPersistablePacMap

getShortValue

getLongValue

getDoubleValue

getFloatValue

getIntValueArray

getShortValueArray

getLongValueArray

getBooleanValueArray

getDoubleValueArray

getFloatValueArray

fromJsonString

toJsonString