org.jtoolkit.essence.app.pojo
Class DataValue<T extends DataValue>

java.lang.Object
  org.jtoolkit.essence.app.pojo.DataValue<T>

All Implemented Interfaces:

Named, Named.Source<java.lang.Object>

Direct Known Subclasses:

ClusterComponentBuilder.ClusterCollectionData, ClusterEvent, Event.StatusEvent, JvmMetrics

public class DataValue<T extends DataValue>
extends java.lang.Object
implements Named.Source<java.lang.Object>

Root object class for immutable data value classes.

A data value class is any immutable class which can be represented as a series of key value pairs and has a constructor which initialises all field in the order they are defined. A data value object does not need to extend this class instead this class defines a number of useful methods.

Note: data value class can have public fields but they should be final.

Author:

Peter Lawrey

Nested Class Summary

Nested classes/interfaces inherited from interface org.jtoolkit.essence.utils.Named

Named.ContextSource<T>, Named.MapSource<T>, Named.Source<T>

Field Summary

Fields inherited from interface org.jtoolkit.essence.utils.Named.Source

EMPTY_SOURCE

Constructor Summary

protected

DataValue() Cannot create a plan data value object with no values.

Method Summary

java.util.Map<java.lang.String,java.lang.Object>	asMap()
boolean	equals(java.lang.Object obj)
java.lang.String	getName()
java.util.Set<java.lang.String>	getNames()
java.lang.Object	getValue(java.lang.String name)
int	hashCode()
<T2 extends DataValue> T2	project(java.lang.Class<T2> class2, java.lang.Object... keyValues)
T	setCopy(java.lang.String field, java.lang.Object value, java.lang.Object... others)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DataValue

protected DataValue()

Cannot create a plan data value object with no values.

Method Detail

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

asMap

@NotNull
public java.util.Map<java.lang.String,java.lang.Object> asMap()

setCopy

public T setCopy(@NotNull
                 java.lang.String field,
                 java.lang.Object value,
                 java.lang.Object... others)

project

public <T2 extends DataValue> T2 project(@NotNull
                                         java.lang.Class<T2> class2,
                                         java.lang.Object... keyValues)

getNames

@NotNull
public java.util.Set<java.lang.String> getNames()

Specified by:

getNames in interface Named.Source<java.lang.Object>

Returns:

names available in this source.

getValue

public java.lang.Object getValue(@NotNull
                                 java.lang.String name)
                          throws java.util.NoSuchElementException

Specified by:

getValue in interface Named.Source<java.lang.Object>

Parameters:

name - of the object.

Returns:

the object in source or null.

Throws:

java.util.NoSuchElementException

getName

@NotNull
public java.lang.String getName()

Specified by:

getName in interface Named

Returns:

A printable name.