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org.jboss.portal.common.value
Class Value

java.lang.Object
  org.jboss.portal.common.value.Value

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

Direct Known Subclasses:

BooleanValue, FloatValue, IntegerValue, StringValue

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public abstract class Value

extends java.lang.Object

implements java.io.Serializable, java.lang.Cloneable

A read only interface used to retrieve data. It represents both for mono value and multi values. It must implement equals and hashCode.

The semantics :

storage	mono	multi
xxx	xxx	[xxx]
null	null	[null]
[]	null	[]
[null,..]	null	[null,..]
["1",..]	"1"	["1",..]

Version:

$Revision: 5451 $

Author:

Julien Viet

See Also:

Serialized Form

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Nested Class Summary
private static class	Value.ValueList

 

Field Summary
private  int	hashCode           The cached hashCode.
private  java.util.List	objectList           The object list representation.
private  java.util.List	stringList           The string list representation.

 

Constructor Summary

Value()

 

Method Summary
java.lang.Object	asObject()           Return the value.
java.lang.Object[]	asObjectArray()           Create a new array and fill it with the values.
java.util.List	asObjectList()           Return an immutable list of objects.
java.lang.String	asString()           Return the value as a string or null if the value is null.
java.lang.String[]	asStringArray()           Creates a new array and fill it with the string values.
java.util.List	asStringList()           Return an immutable list of strings.
java.lang.Object	clone()           Clone this object.
boolean	equals(java.lang.Object obj)
protected abstract  java.lang.Object[]	getObjectArray()           Return the values as an array of converted object.
int	hashCode()
boolean	isEmpty()           Return true if it contains zero value.
abstract  boolean	isInstanceOf(java.lang.Class clazz)
boolean	isMultiValued()           Return true if it contains more than one value.
boolean	isNull()           Return true if the value is null.
int	size()           Return the size.
java.lang.String	toString()

 

Methods inherited from class java.lang.Object

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

 

Field Detail

hashCode

private transient int hashCode

The cached hashCode.

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objectList

private transient java.util.List objectList

The object list representation.

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stringList

private transient java.util.List stringList

The string list representation.

Constructor Detail

Value

public Value()

Method Detail

isInstanceOf

public abstract boolean isInstanceOf(java.lang.Class clazz)

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hashCode

public final int hashCode()

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equals

public final boolean equals(java.lang.Object obj)

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toString

public final java.lang.String toString()

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clone

public final java.lang.Object clone()

Clone this object.

Returns:

a clone of this object

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isNull

public final boolean isNull()

Return true if the value is null.

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asString

public final java.lang.String asString()

Return the value as a string or null if the value is null.

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asObject

public final java.lang.Object asObject()

Return the value.

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isMultiValued

public final boolean isMultiValued()

Return true if it contains more than one value.

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isEmpty

public final boolean isEmpty()

Return true if it contains zero value.

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size

public final int size()

Return the size.

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asStringArray

public final java.lang.String[] asStringArray()

Creates a new array and fill it with the string values.

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asObjectArray

public final java.lang.Object[] asObjectArray()

Create a new array and fill it with the values.

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asStringList

public final java.util.List asStringList()

Return an immutable list of strings.

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asObjectList

public final java.util.List asObjectList()

Return an immutable list of objects.

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getObjectArray

protected abstract java.lang.Object[] getObjectArray()

Return the values as an array of converted object. It must always return a non null array.

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