com.bm.introspectors
Class Property

java.lang.Object
  com.bm.introspectors.Property

public class Property
extends java.lang.Object

Every persistent property of a EJB3 entity bean can be defined as field access or method access (using setter/getters). The property class abstracts from the access method and represtets a field (AccessType.FIELD) OR getter/setter (AccessType.PROPERTY)

Author:

Daniel Wiese

Constructor Summary

Property(java.lang.Class declaringClass, java.beans.PropertyDescriptor property)
Contructor using getter/setter access.

Property(java.lang.reflect.Field fieldName)
Contructor uing field access.

Property(FieldAnnotationMetadata metaData)
Contructor using field access.

Method Summary

boolean	equals(java.lang.Object other) Equals.
<T extends java.lang.annotation.Annotation> T	getAnnotation(java.lang.Class<T> annnotation) Returns a annotation for the current property if present.
java.lang.Class	getDeclaringClass() Returns the class where the property is declared.
java.lang.Object	getField(java.lang.Object instance) Returns a value of an field.
java.lang.reflect.Type	getGenericType() Returns the generic Type of this property.
java.lang.Class<java.lang.Object>	getGenericTypeClass() If the propety represents a genericType (e.g.
java.lang.String	getName() Return the name.
java.beans.PropertyDescriptor	getProperty() Returns the property.
java.lang.String	getPropertyName() Returns null if the accestype is field.
java.lang.Class	getType() Returns the type of the property.
int	hashCode() Hash Code.
void	setField(java.lang.Object instance, java.lang.Object value) Sets a value of the field / getterMethod.
java.lang.String	toString() To String.

Methods inherited from class java.lang.Object

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

Constructor Detail

Property

public Property(java.lang.Class declaringClass,
                java.beans.PropertyDescriptor property)

Contructor using getter/setter access.

Parameters:

declaringClass - - the class wich declares the property

property - - the property descriptor

Property

public Property(FieldAnnotationMetadata metaData)

Contructor using field access. Ejb3 metadata is passed directly.

Parameters:

metaData - the ejb3 metadata information

Property

public Property(java.lang.reflect.Field fieldName)

Contructor uing field access.

Parameters:

fieldName - - der name des feldes

Method Detail

setField

public void setField(java.lang.Object instance,
                     java.lang.Object value)
              throws java.lang.IllegalAccessException

Sets a value of the field / getterMethod.

Parameters:

instance - - the instance (Typed)

value - - the new value

Throws:

java.lang.IllegalAccessException - - in error case

getField

public java.lang.Object getField(java.lang.Object instance)
                          throws java.lang.IllegalAccessException

Returns a value of an field.

Parameters:

instance - - the instance

Returns:

- the value of the paremeter of the instance

Throws:

java.lang.IllegalAccessException - - in error case

getType

public java.lang.Class getType()

Returns the type of the property.

Returns:

- the type

getGenericType

public java.lang.reflect.Type getGenericType()

Returns the generic Type of this property. E.g. id the proprty is. Collection/Order/ then Order will be returned.

Returns:

the generic Type of this property

Since:

28.10.2005

getGenericTypeClass

public java.lang.Class<java.lang.Object> getGenericTypeClass()

If the propety represents a genericType (e.g. Collection/Order/) ! Typed class thit ONE type) -> then the type is returned.

Returns:

- the type of the typed class or null

getName

public java.lang.String getName()

Return the name.

Returns:

- the name

getDeclaringClass

public java.lang.Class getDeclaringClass()

Returns the class where the property is declared.

Returns:

Returns the declaringClass.

equals

public boolean equals(java.lang.Object other)

Equals.

Overrides:

equals in class java.lang.Object

Parameters:

other - the other to compare

Returns:

- true if equal

See Also:

Object.equals(java.lang.Object)

hashCode

public int hashCode()

Hash Code.

Overrides:

hashCode in class java.lang.Object

Returns:

the hash code

See Also:

Object.hashCode()

getProperty

public java.beans.PropertyDescriptor getProperty()

Returns the property.

Returns:

Returns the property.

getPropertyName

public java.lang.String getPropertyName()

Returns null if the accestype is field.

Returns:

Returns the propertyName.

getAnnotation

public <T extends java.lang.annotation.Annotation> T getAnnotation(java.lang.Class<T> annnotation)

Returns a annotation for the current property if present.

Type Parameters:

T - the annotation type.

Parameters:

annnotation - the annotation class

Returns:

the annotation instance

toString

public java.lang.String toString()

To String.

Overrides:

toString in class java.lang.Object

Returns:

- formatted string

See Also:

Object.toString()