software.amazon.awssdk.core.document.internal

Class NullDocument

java.lang.Object

software.amazon.awssdk.core.document.internal.NullDocument

All Implemented Interfaces:

Serializable, Document

@Immutable
public final class NullDocument
extends Object
implements Document

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface software.amazon.awssdk.core.document.Document

Document.ListBuilder, Document.MapBuilder

Constructor Summary

Constructors

Constructor and Description
NullDocument()

Method Summary

Modifier and Type	Method and Description
<R> R	accept(DocumentVisitor<? extends R> visitor) Accepts a visitor with the Document.
void	accept(VoidDocumentVisitor visitor) Accepts a visitor with the Document.
boolean	asBoolean()
List<Document>	asList()
Map<String,Document>	asMap()
SdkNumber	asNumber()
String	asString()
boolean	equals(Object obj)
int	hashCode()
boolean	isNull() Checks if the document is a null value.
String	toString()
Object	unwrap() Unwraps NullDocument as null.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface software.amazon.awssdk.core.document.Document

fromBoolean, fromList, fromMap, fromNull, fromNumber, fromNumber, fromNumber, fromNumber, fromNumber, fromNumber, fromNumber, fromNumber, fromString, isBoolean, isList, isMap, isNumber, isString, listBuilder, mapBuilder

Constructor Detail

NullDocument

public NullDocument()

Method Detail

unwrap

public Object unwrap()

Unwraps NullDocument as null.

Specified by:

unwrap in interface Document

Returns:

null

asBoolean

public boolean asBoolean()

Specified by:

asBoolean in interface Document

Returns:

Returns the boolean value.

asString

public String asString()

Specified by:

asString in interface Document

Returns:

Returns the string value.

asNumber

public SdkNumber asNumber()

Specified by:

asNumber in interface Document

Returns:

Returns the SdkNumber.

asMap

public Map<String,Document> asMap()

Specified by:

asMap in interface Document

Returns:

Returns the Document map.

isNull

public boolean isNull()

Description copied from interface: Document

Checks if the document is a null value.

Specified by:

isNull in interface Document

Returns:

true ,since this is a Document Null.

asList

public List<Document> asList()

Specified by:

asList in interface Document

Returns:

Returns the lists of Document.

accept

public <R> R accept(DocumentVisitor<? extends R> visitor)

Accepts a visitor with the Document.

Specified by:

accept in interface Document

Type Parameters:

R - visitor return type.

Parameters:

visitor - Visitor to dispatch to.

Returns:

Returns the accepted result by calling visitNull of visitor.

accept

public void accept(VoidDocumentVisitor visitor)

Accepts a visitor with the Document. Calls visitNull of visitor.

Specified by:

accept in interface Document

Parameters:

visitor - Visitor to dispatch to.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object