com.alibaba.fastjson2.introspect

Class FunctionAccessor<T>

java.lang.Object

com.alibaba.fastjson2.introspect.FunctionAccessor<T>

Type Parameters:

T - the type of the object containing the property

All Implemented Interfaces:

PropertyAccessor

Direct Known Subclasses:

PropertyAccessorFactory.FunctionAccessorBigDecimal, PropertyAccessorFactory.FunctionAccessorBigInteger, PropertyAccessorFactory.FunctionAccessorBoolean, PropertyAccessorFactory.FunctionAccessorBooleanValue, PropertyAccessorFactory.FunctionAccessorByte, PropertyAccessorFactory.FunctionAccessorByteValue, PropertyAccessorFactory.FunctionAccessorCharacter, PropertyAccessorFactory.FunctionAccessorCharValue, PropertyAccessorFactory.FunctionAccessorDouble, PropertyAccessorFactory.FunctionAccessorDoubleValue, PropertyAccessorFactory.FunctionAccessorFloat, PropertyAccessorFactory.FunctionAccessorFloatValue, PropertyAccessorFactory.FunctionAccessorInteger, PropertyAccessorFactory.FunctionAccessorIntValue, PropertyAccessorFactory.FunctionAccessorLong, PropertyAccessorFactory.FunctionAccessorLongValue, PropertyAccessorFactory.FunctionAccessorNumber, PropertyAccessorFactory.FunctionAccessorObject, PropertyAccessorFactory.FunctionAccessorShort, PropertyAccessorFactory.FunctionAccessorShortValue, PropertyAccessorFactory.FunctionAccessorString

public abstract class FunctionAccessor<T>
extends java.lang.Object
implements PropertyAccessor

Abstract base class for function-based property accessors. Provides common functionality for accessing object properties using getter and setter functions. This allows for accessing properties through functional interfaces rather than direct field access or method invocation, providing flexibility in how properties are accessed.

Implements PropertyAccessor interface using functional interfaces for property access, providing efficient property access for serialization and deserialization operations.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.function.BiFunction<PropertyAccessor,java.lang.Throwable,java.lang.RuntimeException>	exceptionHandler
protected java.lang.Object	getter The getter function for accessing the property value
protected java.lang.String	name The name of the property being accessed
protected java.lang.Class<?>	propertyClass The runtime class of the property
protected java.lang.reflect.Type	propertyType The generic type of the property
protected java.lang.Object	setter The setter function for setting the property value

Constructor Summary

Constructors

Constructor and Description
FunctionAccessor(java.lang.String name, java.lang.reflect.Type propertyType, java.lang.Class<?> propertyClass, java.lang.Object getter, java.lang.Object setter)
FunctionAccessor(java.lang.String name, java.lang.reflect.Type propertyType, java.lang.Class<?> propertyClass, java.lang.Object getter, java.lang.Object setter, java.util.function.BiFunction<PropertyAccessor,java.lang.Throwable,java.lang.RuntimeException> exceptionHandler) Constructs a FunctionAccessor with the specified parameters.

Method Summary

Modifier and Type	Method and Description
(package private) JSONException	errorForGet(java.lang.Throwable e) Creates a JSON exception for getter errors.
(package private) java.lang.RuntimeException	errorForSet(java.lang.Throwable e) Creates a JSON exception for setter errors.
java.lang.String	name() Returns the name of the property being accessed.
java.lang.Class<?>	propertyClass() Returns the runtime class of the property.
java.lang.reflect.Type	propertyType() Returns the generic type of the property.
boolean	supportGet() Checks if the property supports getting values.
boolean	supportSet() Checks if the property supports setting values.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.alibaba.fastjson2.introspect.PropertyAccessor

getBooleanValue, getByteValue, getCharValue, getDoubleValue, getFloatValue, getIntValue, getLongValue, getObject, getShortValue, setBooleanValue, setByteValue, setCharValue, setDoubleValue, setFloatValue, setIntValue, setLongValue, setObject, setShortValue

Field Detail

name

protected final java.lang.String name

The name of the property being accessed

propertyType

protected final java.lang.reflect.Type propertyType

The generic type of the property

propertyClass

protected final java.lang.Class<?> propertyClass

The runtime class of the property

getter

protected final java.lang.Object getter

The getter function for accessing the property value

setter

protected final java.lang.Object setter

The setter function for setting the property value

exceptionHandler

protected final java.util.function.BiFunction<PropertyAccessor,java.lang.Throwable,java.lang.RuntimeException> exceptionHandler

Constructor Detail

FunctionAccessor

public FunctionAccessor(java.lang.String name,
                        java.lang.reflect.Type propertyType,
                        java.lang.Class<?> propertyClass,
                        java.lang.Object getter,
                        java.lang.Object setter)

FunctionAccessor

public FunctionAccessor(java.lang.String name,
                        java.lang.reflect.Type propertyType,
                        java.lang.Class<?> propertyClass,
                        java.lang.Object getter,
                        java.lang.Object setter,
                        java.util.function.BiFunction<PropertyAccessor,java.lang.Throwable,java.lang.RuntimeException> exceptionHandler)

Constructs a FunctionAccessor with the specified parameters.

Parameters:

name - the name of the property

propertyType - the generic type of the property

propertyClass - the runtime class of the property

getter - the getter function for accessing the property value

setter - the setter function for setting the property value

Method Detail

name

public final java.lang.String name()

Description copied from interface: PropertyAccessor

Returns the name of the property being accessed.

Specified by:

name in interface PropertyAccessor

Returns:

the property name

supportGet

public final boolean supportGet()

Checks if the property supports getting values. A property supports getting if a getter function is provided.

Specified by:

supportGet in interface PropertyAccessor

Returns:

true if the getter function is not null, false otherwise

supportSet

public final boolean supportSet()

Checks if the property supports setting values. A property supports setting if a setter function is provided.

Specified by:

supportSet in interface PropertyAccessor

Returns:

true if the setter function is not null, false otherwise

propertyClass

public final java.lang.Class<?> propertyClass()

Description copied from interface: PropertyAccessor

Returns the runtime class of the property.

Specified by:

propertyClass in interface PropertyAccessor

Returns:

the property class

propertyType

public final java.lang.reflect.Type propertyType()

Description copied from interface: PropertyAccessor

Returns the generic type of the property.

Specified by:

propertyType in interface PropertyAccessor

Returns:

the property type

errorForGet

final JSONException errorForGet(java.lang.Throwable e)

Creates a JSON exception for getter errors.

Parameters:

e - the exception that occurred during getting

Returns:

a JSONException with details about the getter error

errorForSet

java.lang.RuntimeException errorForSet(java.lang.Throwable e)

Creates a JSON exception for setter errors.

Parameters:

e - the exception that occurred during setting

Returns:

a JSONException with details about the setter error