程序包 com.baidubce.services.moladb.model

类 Key

java.lang.Object

com.baidubce.services.moladb.model.Key

public class Key
extends Object

Represents the Key part for an item. For each Key, it maybe an attribute for hashkey or two attributes for hashkey and rangekey.

构造器概要

构造器

构造器	说明
Key()	Constructs a new Key object.
Key(String attributeName, AttributeValue value)	Constructs a new Key object.
Key(String hashKeyName, AttributeValue hashKeyValue, String rangeKeyName, AttributeValue rangeKeyValue)	Constructs a new Key object.
Key(Map<String,AttributeValue> attributes)	Constructs a new Key object.

方法概要

修饰符和类型	方法	说明
Map<String,AttributeValue>	getAttributes()	Get this object's attribute map with name and value.
void	setAttributes(Map<String,AttributeValue> attributes)	Set this object with a given attribute value map.
protected Map<String,Object>	toJsonObj()
String	toString()	Return a string representation of the object.
Key	withAttribute(String attributeName, AttributeValue value)	The method set attribute name and attribute value with input parameters for a key.
Key	withAttributes(Map<String,AttributeValue> attributes)	Set this object with a given attribute value map.

从类继承的方法 java.lang.Object

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

构造器详细资料

Key

public Key()

Constructs a new Key object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

Key

public Key(String attributeName,
           AttributeValue value)

Constructs a new Key object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

参数:

attributeName - The attribute name to set for a key.

value - The attribute value to set for a key.

Key

public Key(String hashKeyName,
           AttributeValue hashKeyValue,
           String rangeKeyName,
           AttributeValue rangeKeyValue)

Constructs a new Key object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

参数:

hashKeyName - The attribute name to set for a hashKey.

hashKeyValue - The attribute value to set for a hashKey.

rangeKeyName - The attribute name to set for a rangeKey.

rangeKeyValue - The attribute value to set for a rangeKey.

Key

public Key(Map<String,AttributeValue> attributes)

Constructs a new Key object. Callers should use the setter or fluent setter (with...) methods to initialize any additional object members.

参数:

attributes - An attribute map with name and value to set for a key.

方法详细资料

withAttribute

public Key withAttribute(String attributeName,
                         AttributeValue value)

The method set attribute name and attribute value with input parameters for a key. Returns a reference to this object so that method calls can be chained together.

参数:

attributeName - The attribute name to set for a key.

value - The attribute value to set for a key.

返回:

A reference to this object so that method calls can be chained together.

getAttributes

public Map<String,AttributeValue> getAttributes()

Get this object's attribute map with name and value.

返回:

A map of attributes with name and value.

setAttributes

public void setAttributes(Map<String,AttributeValue> attributes)

Set this object with a given attribute value map.

参数:

attributes - An attribute value map to be set for this object.

withAttributes

public Key withAttributes(Map<String,AttributeValue> attributes)

Set this object with a given attribute value map.

参数:

attributes - An attribute value map to be set for this object.

返回:

A reference to this object so that method calls can be chained together.

toString

public String toString()

Return a string representation of the object.

覆盖:

toString 在类中 Object

返回:

A string representation of the object.

toJsonObj

protected Map<String,Object> toJsonObj()