com.opencsv.bean

Class FieldAccess<T>

java.lang.Object

com.opencsv.bean.FieldAccess<T>

Type Parameters:

T - The type of the member variable being accessed

public class FieldAccess<T>
extends Object

Encapsulates the logic for accessing member variables of classes.

The logic in opencsv is always:

1. Use an accessor method first, if available, and this always has the form "get"/"set" + member name with initial capital.
2. If this accessor method is available but deals in Optional, wrap or unwrap as necessary. Empty Optionals lead to null return values, and null values lead to empty Optionals.
3. Use reflection bypassing all access control restrictions.

These are considered separately for reading and writing.

Since:

5.0

Author:

Andrew Rucker Jones

Constructor Summary

Constructors

Constructor and Description
FieldAccess(Field field) Constructs this instance by determining what mode of access will work for this field.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj) Determines equality between this object and another.
T	getField(Object bean) Returns the value of the field in the given bean.
int	hashCode() Creates a hash code for this object.
void	setField(Object bean, T value) Sets the value of the field in the given bean.
String	toString() Returns a string representation of this object.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldAccess

public FieldAccess(Field field)

Constructs this instance by determining what mode of access will work for this field.

Parameters:

field - The field to be accessed.

Method Detail

getField

public T getField(Object bean)
           throws IllegalAccessException,
                  InvocationTargetException

Returns the value of the field in the given bean.

Parameters:

bean - The bean from which the value of this field should be returned

Returns:

The value of this member variable

Throws:

IllegalAccessException - If there is a problem accessing the member variable

InvocationTargetException - If there is a problem accessing the member variable

setField

public void setField(Object bean,
                     T value)
              throws IllegalAccessException,
                     InvocationTargetException

Sets the value of the field in the given bean.

Parameters:

bean - The bean in which the value of the field should be set

value - The value to be written into the member variable of the bean

Throws:

IllegalAccessException - If there is a problem accessing the member variable

InvocationTargetException - If there is a problem accessing the member variable

hashCode

public int hashCode()

Creates a hash code for this object. This override delegates hash code creation to the field passed in through the constructor and does not includes any of its own state information.

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Determines equality between this object and another. This override delegates equality determination to the field passed in through the constructor and does not includes any of its own state information.

Overrides:

equals in class Object

toString

public String toString()

Returns a string representation of this object. This override delegates the string representation to the field passed in through the constructor and does not includes any of its own state information.

Overrides:

toString in class Object