Module jakarta.json

Package jakarta.json

Class EmptyObject

java.lang.Object

java.util.AbstractMap<java.lang.String,JsonValue>

jakarta.json.EmptyObject

All Implemented Interfaces:

JsonObject, JsonStructure, JsonValue, java.io.Serializable, java.util.Map<java.lang.String,JsonValue>

final class EmptyObject
extends java.util.AbstractMap<java.lang.String,JsonValue>
implements JsonObject, java.io.Serializable

Private implementation of immutable JsonObject.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,V extends java.lang.Object>

Nested classes/interfaces inherited from interface jakarta.json.JsonValue

JsonValue.ValueType

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
private static long	serialVersionUID	for serialization

Fields inherited from interface jakarta.json.JsonValue

EMPTY_JSON_ARRAY, EMPTY_JSON_OBJECT, FALSE, NULL, TRUE

Constructor Summary

Constructors

Constructor	Description
EmptyObject()	Default constructor.

Method Summary

Modifier and Type	Method	Description
java.util.Set<java.util.Map.Entry<java.lang.String,JsonValue>>	entrySet()
boolean	getBoolean(java.lang.String name)	Returns the boolean value of the associated mapping for the specified name.
boolean	getBoolean(java.lang.String name, boolean defaultValue)	Returns the boolean value of the associated mapping for the specified name.
int	getInt(java.lang.String name)	A convenience method for getJsonNumber(name).intValue()
int	getInt(java.lang.String name, int defaultValue)	Returns the int value of the associated JsonNumber mapping for the specified name.
JsonArray	getJsonArray(java.lang.String name)	Returns the array value to which the specified name is mapped.
JsonNumber	getJsonNumber(java.lang.String name)	Returns the number value to which the specified name is mapped.
JsonObject	getJsonObject(java.lang.String name)	Returns the object value to which the specified name is mapped.
JsonString	getJsonString(java.lang.String name)	Returns the string value to which the specified name is mapped.
java.lang.String	getString(java.lang.String name)	A convenience method for getJsonString(name).getString()
java.lang.String	getString(java.lang.String name, java.lang.String defaultValue)	Returns the string value of the associated JsonString mapping for the specified name.
JsonValue.ValueType	getValueType()	Returns the value type of this JSON value.
boolean	isNull(java.lang.String name)	Returns true if the associated value for the specified name is JsonValue.NULL.
private java.lang.Object	readResolve()	Preserves singleton property

Methods inherited from class java.util.AbstractMap

clear, clone, containsKey, containsValue, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, toString, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface jakarta.json.JsonStructure

getValue

Methods inherited from interface jakarta.json.JsonValue

asJsonArray, asJsonObject, toString

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Field Detail

serialVersionUID

private static final long serialVersionUID

for serialization

See Also:

Constant Field Values

Constructor Detail

EmptyObject

EmptyObject()

Default constructor.

Method Detail

entrySet

public java.util.Set<java.util.Map.Entry<java.lang.String,JsonValue>> entrySet()

Specified by:

entrySet in interface java.util.Map<java.lang.String,JsonValue>

Specified by:

entrySet in class java.util.AbstractMap<java.lang.String,JsonValue>

getJsonArray

public JsonArray getJsonArray(java.lang.String name)

Description copied from interface: JsonObject

Returns the array value to which the specified name is mapped. This is a convenience method for (JsonArray)get(name) to get the value.

Specified by:

getJsonArray in interface JsonObject

Parameters:

name - the name whose associated value is to be returned

Returns:

the array value to which the specified name is mapped, or null if this object contains no mapping for the name

getJsonObject

public JsonObject getJsonObject(java.lang.String name)

Description copied from interface: JsonObject

Returns the object value to which the specified name is mapped. This is a convenience method for (JsonObject)get(name) to get the value.

Specified by:

getJsonObject in interface JsonObject

Parameters:

name - the name whose associated value is to be returned

Returns:

the object value to which the specified name is mapped, or null if this object contains no mapping for the name

getJsonNumber

public JsonNumber getJsonNumber(java.lang.String name)

Description copied from interface: JsonObject

Returns the number value to which the specified name is mapped. This is a convenience method for (JsonNumber)get(name) to get the value.

Specified by:

getJsonNumber in interface JsonObject

Parameters:

name - the name whose associated value is to be returned

Returns:

the number value to which the specified name is mapped, or null if this object contains no mapping for the name

getJsonString

public JsonString getJsonString(java.lang.String name)

Description copied from interface: JsonObject

Returns the string value to which the specified name is mapped. This is a convenience method for (JsonString)get(name) to get the value.

Specified by:

getJsonString in interface JsonObject

Parameters:

name - the name whose associated value is to be returned

Returns:

the string value to which the specified name is mapped, or null if this object contains no mapping for the name

getString

public java.lang.String getString(java.lang.String name)

Description copied from interface: JsonObject

A convenience method for getJsonString(name).getString()

Specified by:

getString in interface JsonObject

Parameters:

name - whose associated value is to be returned as String

Returns:

the String value to which the specified name is mapped

getString

public java.lang.String getString(java.lang.String name,
                                  java.lang.String defaultValue)

Description copied from interface: JsonObject

Returns the string value of the associated JsonString mapping for the specified name. If JsonString is found, then its JsonString.getString() is returned. Otherwise, the specified default value is returned.

Specified by:

getString in interface JsonObject

Parameters:

name - whose associated value is to be returned as String

defaultValue - a default value to be returned

Returns:

the string value of the associated mapping for the name, or the default value

getInt

public int getInt(java.lang.String name)

Description copied from interface: JsonObject

A convenience method for getJsonNumber(name).intValue()

Specified by:

getInt in interface JsonObject

Parameters:

name - whose associated value is to be returned as int

Returns:

the int value to which the specified name is mapped

getInt

public int getInt(java.lang.String name,
                  int defaultValue)

Description copied from interface: JsonObject

Returns the int value of the associated JsonNumber mapping for the specified name. If JsonNumber is found, then its JsonNumber.intValue() is returned. Otherwise, the specified default value is returned.

Specified by:

getInt in interface JsonObject

Parameters:

name - whose associated value is to be returned as int

defaultValue - a default value to be returned

Returns:

the int value of the associated mapping for the name, or the default value

getBoolean

public boolean getBoolean(java.lang.String name)

Description copied from interface: JsonObject

Returns the boolean value of the associated mapping for the specified name. If the associated mapping is JsonValue.TRUE, then returns true. If the associated mapping is JsonValue.FALSE, then returns false.

Specified by:

getBoolean in interface JsonObject

Parameters:

name - whose associated value is to be returned as boolean

Returns:

the boolean value to which the specified name is mapped

getBoolean

public boolean getBoolean(java.lang.String name,
                          boolean defaultValue)

Description copied from interface: JsonObject

Returns the boolean value of the associated mapping for the specified name. If the associated mapping is JsonValue.TRUE, then returns true. If the associated mapping is JsonValue.FALSE, then returns false. Otherwise, the specified default value is returned.

Specified by:

getBoolean in interface JsonObject

Parameters:

name - whose associated value is to be returned as int

defaultValue - a default value to be returned

Returns:

the boolean value of the associated mapping for the name, or the default value

isNull

public boolean isNull(java.lang.String name)

Description copied from interface: JsonObject

Returns true if the associated value for the specified name is JsonValue.NULL.

Specified by:

isNull in interface JsonObject

Parameters:

name - name whose associated value is checked

Returns:

return true if the associated value is JsonValue.NULL, otherwise false

getValueType

public JsonValue.ValueType getValueType()

Description copied from interface: JsonValue

Returns the value type of this JSON value.

Specified by:

getValueType in interface JsonValue

Returns:

JSON value type

readResolve

private java.lang.Object readResolve()

Preserves singleton property

Returns:

JsonValue.EMPTY_JSON_OBJECT