org.sormula.reflect

Class RowField<C,T>

java.lang.Object

org.sormula.reflect.RowField<C,T>

Type Parameters:

C - class containing the field

T - class of field

Direct Known Subclasses:

DirectAccessField, MethodAccessField

public abstract class RowField<C,T>
extends java.lang.Object

An abstract reference to a field within a row class with utility methods needed by sormula for reflection.

Since:

3.4

Author:

Jeff Miller

Constructor Summary

Constructors

Constructor and Description
RowField(java.lang.reflect.Field field) Constructs for a field.

Method Summary

Modifier and Type	Method and Description
abstract T	get(C object) Gets value from get method of an object using reflection.
java.lang.reflect.Field	getField() Gets field supplied in constructor.
boolean	isArray() Gets field array type.
boolean	isBooleanMethod() Reports boolean return type of field.
boolean	isClass(java.lang.Class<?> c) Tests if field is instance of class.
boolean	isCollection() Gets field Collection inheritance.
boolean	isMap() Gets field Map inheritance.
boolean	isScalar() Reports if field is scalar.
static <C,T> RowField<C,T>	newInstance(FieldAccessType fieldAccessType, java.lang.reflect.Field field) Factory method to create concrete RowField subclass instance for a field.
abstract void	set(C object, T value) Sets value on object with set method using reflection.

Methods inherited from class java.lang.Object

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

Constructor Detail

RowField

public RowField(java.lang.reflect.Field field)
         throws ReflectException

Constructs for a field.

Parameters:

field - java reflection Field that corresponds to class variable

Throws:

ReflectException - if error

Method Detail

newInstance

public static <C,T> RowField<C,T> newInstance(FieldAccessType fieldAccessType,
                                              java.lang.reflect.Field field)
                                       throws ReflectException

Factory method to create concrete RowField subclass instance for a field.

Type Parameters:

C - class containing the field

T - class of field

Parameters:

fieldAccessType - direct or method access

field - field to access

Returns:

MethodAccessField or DirectAccessField

Throws:

ReflectException - if error

getField

public java.lang.reflect.Field getField()

Gets field supplied in constructor.

Returns:

field Java field

isArray

public boolean isArray()

Gets field array type.

Returns:

if field is an array

Since:

1.9 and 2.3

isCollection

public boolean isCollection()

Gets field Collection inheritance.

Returns:

true if field is a collection

Since:

1.9 and 2.3

isMap

public boolean isMap()

Gets field Map inheritance.

Returns:

true if field is a Map

Since:

1.9 and 2.3

isBooleanMethod

public boolean isBooleanMethod()

Reports boolean return type of field.

Returns:

true if field type is primitive boolean

isScalar

public boolean isScalar()

Reports if field is scalar.

Returns:

true if field is not a Collection and not a Map

See Also:

isClass(Class)

isClass

public boolean isClass(java.lang.Class<?> c)

Tests if field is instance of class.

Parameters:

c - class to test

Returns:

true if field is instance of c or subclass of c

See Also:

Class.isAssignableFrom(Class)

get

public abstract T get(C object)
               throws ReflectException

Gets value from get method of an object using reflection.

Parameters:

object - instance of field to get

Returns:

return value of field instance

Throws:

ReflectException - if error

set

public abstract void set(C object,
                         T value)
                  throws ReflectException

Sets value on object with set method using reflection.

Parameters:

object - instance of field to set new value

value - new value of field instance

Throws:

ReflectException - if error