org.ujoframework.implementation.field
Class FieldUjo

java.lang.Object
  org.ujoframework.extensions.AbstractUjo
      org.ujoframework.implementation.field.FieldUjo

All Implemented Interfaces:

UjoCloneable, UjoTextable, Ujo

public abstract class FieldUjo
extends AbstractUjo

The abstract Ujo implementation use a direct access to its private object fiels. An performance is similar like a MapUjo implementation however the FieldUjo solution have got smaller memore consumption.

Sample of usage

 public class Person extends FieldUjo {
   
   private Long cash;
   private List<Person> childs;
   
   public static UjoProperty<Person,Long> CASH
     = newProperty("CASH", Long.class
     , new ValueAgent<Person,Long>() {
     public void writeValue(Person ujo, Long value) { 
            ujo.cash = value; 
         }
     public Long readValue (Person ujo) { 
         return ujo.cash;  
     }
   });    
   
   public static FieldPropertyList<Person,Person> CHILDS
     = newListProperty("CHILDS", Person.class
     , new ValueAgent<Person,List<Person>>() {
     public void writeValue(Person ujo, List<Person> value) {
         ujo.childs = value; 
     }
     public List<Person> readValue(Person ujo) {
         return ujo.childs; 
     }
   });
 }

Since:

ujo-tool

Author:

Pavel Ponec

See Also:

FieldProperty

Constructor Summary

FieldUjo()

Method Summary

protected static <UJO extends Ujo,ITEM> FieldPropertyList<UJO,ITEM>	newListProperty(java.lang.String name, java.lang.Class<ITEM> type, ValueAgent<UJO,java.util.List<ITEM>> agent) A ListProperty Factory for a FieldUjo object
protected static <UJO extends Ujo,VALUE> FieldProperty<UJO,VALUE>	newProperty(java.lang.String name, java.lang.Class<VALUE> type, ValueAgent<UJO,VALUE> agent) Returns a new instance of property where the default value is null.
protected static <UJO extends Ujo,VALUE> FieldProperty<UJO,VALUE>	newProperty(java.lang.String name, VALUE value, ValueAgent<UJO,VALUE> agent) A Property Factory creates a new property and assigns a next property index.
java.lang.Object	readValue(UjoProperty property) It is a common method for reading all object values, however there is strongly recomended to use a method FieldProperty.getValue(Ujo) to an external access for a better type safe.
void	writeValue(UjoProperty property, java.lang.Object value) It is a common method for writing all object values, however there is strongly recomended to use a method FieldProperty.setValue(Ujo,Object) to an external access for a better type safe.

Methods inherited from class org.ujoframework.extensions.AbstractUjo

clone, equals, init, init, readAuthorization, readProperties, readUjoManager, readValueString, toString, writeValueString

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldUjo

public FieldUjo()

Method Detail

writeValue

public void writeValue(UjoProperty property,
                       java.lang.Object value)

It is a common method for writing all object values, however there is strongly recomended to use a method FieldProperty.setValue(Ujo,Object) to an external access for a better type safe. The method have got a strategy place for an implementation of several listeners and validators.
NOTE: If property is an incorrect then method throws an IllegalArgumentException.

Parameters:

property - Property must be a direct type only!

See Also:

FieldProperty.setValue(Ujo,Object)

readValue

public java.lang.Object readValue(UjoProperty property)

It is a common method for reading all object values, however there is strongly recomended to use a method FieldProperty.getValue(Ujo) to an external access for a better type safe. The method have got a strategy place for an implementation of several listeners and convertors.
NOTE: If property is an incorrect then method throws an IllegalArgumentException.

Parameters:

property - Property must be a direct type only!

Returns:

Property value

See Also:

FieldProperty.getValue(Ujo)

newProperty

protected static <UJO extends Ujo,VALUE> FieldProperty<UJO,VALUE> newProperty(java.lang.String name,
                                                                              java.lang.Class<VALUE> type,
                                                                              ValueAgent<UJO,VALUE> agent)

Returns a new instance of property where the default value is null.

newProperty

protected static <UJO extends Ujo,VALUE> FieldProperty<UJO,VALUE> newProperty(java.lang.String name,
                                                                              VALUE value,
                                                                              ValueAgent<UJO,VALUE> agent)

A Property Factory creates a new property and assigns a next property index.

newListProperty

protected static <UJO extends Ujo,ITEM> FieldPropertyList<UJO,ITEM> newListProperty(java.lang.String name,
                                                                                    java.lang.Class<ITEM> type,
                                                                                    ValueAgent<UJO,java.util.List<ITEM>> agent)

A ListProperty Factory for a FieldUjo object