com.alibaba.fastjson2.introspect

Class FieldAccessor

java.lang.Object

com.alibaba.fastjson2.introspect.FieldAccessor

All Implemented Interfaces:

PropertyAccessor

Direct Known Subclasses:

PropertyAccessorFactory.FieldAccessorReflect, PropertyAccessorFactoryUnsafe.FieldAccessorUnsafe

public abstract class FieldAccessor
extends java.lang.Object
implements PropertyAccessor

Abstract base class for field-based property accessors. Provides common functionality for accessing object fields using reflection. Handles field metadata and determines if the field supports setting based on whether the field is declared as final.

Implements PropertyAccessor interface using direct field access through reflection, providing efficient property access for serialization and deserialization operations.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.lang.reflect.Field	field The underlying Field object being accessed
protected java.lang.String	fieldName The name of the field
protected java.lang.Class<?>	propertyClass The runtime class of the field
protected java.lang.reflect.Type	propertyType The generic type of the field
protected boolean	supportSet Flag indicating whether the field supports setting values

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FieldAccessor(java.lang.reflect.Field field) Constructs a FieldAccessor for the given field.

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) JSONException	errorForSet(java.lang.Throwable e) Creates a JSON exception for setter errors.
java.lang.reflect.Field	field() Returns the underlying Field object.
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.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

field

protected final java.lang.reflect.Field field

The underlying Field object being accessed

fieldName

protected final java.lang.String fieldName

The name of the field

propertyClass

protected final java.lang.Class<?> propertyClass

The runtime class of the field

propertyType

protected final java.lang.reflect.Type propertyType

The generic type of the field

supportSet

protected final boolean supportSet

Flag indicating whether the field supports setting values

Constructor Detail

FieldAccessor

protected FieldAccessor(java.lang.reflect.Field field)

Constructs a FieldAccessor for the given field.

Parameters:

field - the field to be accessed

Method Detail

field

public final java.lang.reflect.Field field()

Returns the underlying Field object.

Returns:

the Field object

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

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()

Description copied from interface: PropertyAccessor

Checks if the property supports getting values.

Specified by:

supportGet in interface PropertyAccessor

Returns:

true if the property can be read, false otherwise

supportSet

public final boolean supportSet()

Description copied from interface: PropertyAccessor

Checks if the property supports setting values.

Specified by:

supportSet in interface PropertyAccessor

Returns:

true if the property can be written, false otherwise

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

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

final JSONException 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