org.ujoframework.extensions
Class Property<UJO extends Ujo,VALUE>

java.lang.Object
  org.ujoframework.extensions.Property<UJO,VALUE>

All Implemented Interfaces:

java.lang.CharSequence, UjoProperty<UJO,VALUE>

Direct Known Subclasses:

BeanProperty, FactoryProperty, FieldProperty, ListProperty, RelationToMany

public class Property<UJO extends Ujo,VALUE>
extends java.lang.Object
implements UjoProperty<UJO,VALUE>

The main implementation of the interface UjoProperty.

Author:

Pavel Ponec

See Also:

AbstractUjo

Constructor Summary

protected	Property() Protected constructor
protected	Property(java.lang.String name, java.lang.Class<VALUE> type, int index) Constructor with an property order
protected	Property(java.lang.String name, VALUE value, int index) Constructor with an property order

Method Summary

protected static int	_nextSequence() Returns a next property index by a synchronized method.
int	compareTo(UjoProperty p) Compare to another UjoProperty object by a index code.
UjoProperty<UJO,VALUE>	descending() Create a new instance of the indirect property with a descending direction of order.
boolean	equals(UJO ujo, VALUE value) Returns true, if the property value equals to a parameter value.
VALUE	getDefault() Returns a Default property value.
int	getIndex() Index of Property
java.lang.String	getName() Name of Property
java.lang.Class<VALUE>	getType() Type of Property
VALUE	getValue(UJO ujo) It is a basic method for getting an appropriate type safe value from an MapUjo object.
char	charAt(int index) A char from Name
protected void	checkAttribs() Check properties
protected Property<UJO,VALUE>	init(java.lang.String name, java.lang.Class<VALUE> type, VALUE defaultValue, int index, java.lang.Boolean lock) Property initialization.
boolean	isAscending() A flag for a direction of sorting.
boolean	isDefault(UJO ujo) Indicates whether a parameter value of the ujo "equal to" this default value.
boolean	isDirect() Returns a true value, if the property contains more properties.
boolean	isTypeOf(java.lang.Class type) Returns true if the property type is a type or subtype of the parameter class.
int	length() Length of the Name
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(java.lang.String name, java.lang.Class<VALUE> type) Returns a new instance of property where the default value is null.
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(java.lang.String name, java.lang.Class<VALUE> type, int index) Returns a new instance of property where the default value is null.
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(java.lang.String name, java.lang.Class<VALUE> type, VALUE value, int index, boolean lock) Returns a new instance of property where the default value is null.
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(java.lang.String name, VALUE value) A Property Factory where a property type is related from from default value.
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(java.lang.String name, VALUE value, int index) A Property Factory where a property type is related from from default value.
static <UJO extends Ujo,VALUE> UjoProperty<UJO,VALUE>	newInstance(UjoProperty p) A Property Factory where a property type is related from from default value.
static <UJO extends Ujo,VALUE> Property<UJO,VALUE>	newInstance(UjoProperty p, int index) A Property Factory where a property type is related from from default value.
VALUE	of(UJO ujo) An alias for a method getValue(Ujo) .
<PROPERTY extends Property> PROPERTY	setDefault(VALUE value) Assign a Default value.
void	setValue(UJO ujo, VALUE value) It is a basic method for setting an appropriate type safe value to an MapUjo object.
void	setValueFromDefault(UJO ujo) Assing a value from the default value.
java.lang.CharSequence	subSequence(int start, int end) Sub sequence from the Name
java.lang.String	toString() Returns a name of Property

Methods inherited from class java.lang.Object

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

Constructor Detail

Property

protected Property(java.lang.String name,
                   java.lang.Class<VALUE> type,
                   int index)

Constructor with an property order

Parameters:

name -

type -

index - On order of the property.

Property

protected Property(java.lang.String name,
                   VALUE value,
                   int index)

Constructor with an property order

Parameters:

name -

index - On order of the property.

Property

protected Property()

Protected constructor

Method Detail

_nextSequence

protected static final int _nextSequence()

Returns a next property index by a synchronized method. The UJO property indexed by this method may not be in continuous series however numbers have the upward direction always.

init

protected final Property<UJO,VALUE> init(java.lang.String name,
                                         java.lang.Class<VALUE> type,
                                         VALUE defaultValue,
                                         int index,
                                         java.lang.Boolean lock)

Property initialization.

Parameters:

name - Replace the Name of property if the one is NULL.

index - Replace index allways, the value -1 invoke a next number from the internal sequencer.

type - Replace the Type of property if the one is NULL.

defaultValue - Replace the Optional default value if the one is NULL.

lock - Lock the property.

checkAttribs

protected void checkAttribs()

Check properties

getName

public final java.lang.String getName()

Name of Property

Specified by:

getName in interface UjoProperty<UJO extends Ujo,VALUE>

getType

public final java.lang.Class<VALUE> getType()

Type of Property

Specified by:

getType in interface UjoProperty<UJO extends Ujo,VALUE>

getIndex

public final int getIndex()

Index of Property

Specified by:

getIndex in interface UjoProperty<UJO extends Ujo,VALUE>

See Also:

ArrayUjo, UjoManager.readProperties(Class)

setValue

public final void setValue(UJO ujo,
                           VALUE value)

It is a basic method for setting an appropriate type safe value to an MapUjo object.
For the setting value is used internally a method MapUjo.writeValue(UjoProperty, Object).

Specified by:

setValue in interface UjoProperty<UJO extends Ujo,VALUE>

See Also:

Ujo.writeValue(UjoProperty,Object)

getValue

public final VALUE getValue(UJO ujo)

It is a basic method for getting an appropriate type safe value from an MapUjo object.
For the getting value is used internally a method MapUjo.readValue(UjoProperty).

Specified by:

getValue in interface UjoProperty<UJO extends Ujo,VALUE>

Parameters:

ujo - If a NULL parameter is used then an exception NullPointerException is throwed.

Returns:

Returns a type safe value from the ujo object.

See Also:

Ujo.readValue(UjoProperty)

of

public final VALUE of(UJO ujo)

An alias for a method getValue(Ujo) .

Specified by:

of in interface UjoProperty<UJO extends Ujo,VALUE>

See Also:

getValue(Ujo)

getDefault

public VALUE getDefault()

Returns a Default property value. The value replace the null value in the method Ujo.readValue(...). If the default value is not modified, returns the null.

Specified by:

getDefault in interface UjoProperty<UJO extends Ujo,VALUE>

See Also:

Ujo.readValue(UjoProperty)

setDefault

public <PROPERTY extends Property> PROPERTY setDefault(VALUE value)

Assign a Default value. The default value may be modified after locking - at your own risk.
WARNING: the change of the default value modifies all values in all instances with the null value of the current property!

setValueFromDefault

public void setValueFromDefault(UJO ujo)

Assing a value from the default value.

isDefault

public boolean isDefault(UJO ujo)

Indicates whether a parameter value of the ujo "equal to" this default value.

Specified by:

isDefault in interface UjoProperty<UJO extends Ujo,VALUE>

isDirect

public final boolean isDirect()

Returns a true value, if the property contains more properties. The composite property is excluded from from function Ujo.readProperties() by default.

Specified by:

isDirect in interface UjoProperty<UJO extends Ujo,VALUE>

isAscending

public boolean isAscending()

A flag for a direction of sorting. This method returns true allways.

Specified by:

isAscending in interface UjoProperty<UJO extends Ujo,VALUE>

Since:

0.85

See Also:

UjoComparator

descending

public UjoProperty<UJO,VALUE> descending()

Create a new instance of the indirect property with a descending direction of order.

Specified by:

descending in interface UjoProperty<UJO extends Ujo,VALUE>

Returns:

returns a new instance of the indirect UjoProperty

Since:

0.85

See Also:

isAscending(), UjoComparator

isTypeOf

public boolean isTypeOf(java.lang.Class type)

Returns true if the property type is a type or subtype of the parameter class.

Specified by:

isTypeOf in interface UjoProperty<UJO extends Ujo,VALUE>

equals

public boolean equals(UJO ujo,
                      VALUE value)

Returns true, if the property value equals to a parameter value. The property value can be null.

Specified by:

equals in interface UjoProperty<UJO extends Ujo,VALUE>

Parameters:

ujo - A basic Ujo.

value - Null value is supported.

Returns:

Accordance

compareTo

public int compareTo(UjoProperty p)

Compare to another UjoProperty object by a index code.

charAt

public char charAt(int index)

A char from Name

Specified by:

charAt in interface java.lang.CharSequence

length

public int length()

Length of the Name

Specified by:

length in interface java.lang.CharSequence

subSequence

public java.lang.CharSequence subSequence(int start,
                                          int end)

Sub sequence from the Name

Specified by:

subSequence in interface java.lang.CharSequence

toString

public final java.lang.String toString()

Returns a name of Property

Specified by:

toString in interface java.lang.CharSequence

Specified by:

toString in interface UjoProperty<UJO extends Ujo,VALUE>

Overrides:

toString in class java.lang.Object

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(java.lang.String name,
                                                                      java.lang.Class<VALUE> type,
                                                                      VALUE value,
                                                                      int index,
                                                                      boolean lock)

Returns a new instance of property where the default value is null. The method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(java.lang.String name,
                                                                      java.lang.Class<VALUE> type,
                                                                      int index)

Returns a new instance of property where the default value is null. The method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(java.lang.String name,
                                                                      java.lang.Class<VALUE> type)

Returns a new instance of property where the default value is null. The method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(java.lang.String name,
                                                                      VALUE value,
                                                                      int index)

A Property Factory where a property type is related from from default value. Method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(java.lang.String name,
                                                                      VALUE value)

A Property Factory where a property type is related from from default value. Method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> Property<UJO,VALUE> newInstance(UjoProperty p,
                                                                      int index)

A Property Factory where a property type is related from from default value. Method assigns a next property index.

newInstance

public static <UJO extends Ujo,VALUE> UjoProperty<UJO,VALUE> newInstance(UjoProperty p)

A Property Factory where a property type is related from from default value.
Warning: Method does not lock the property so you must call AbstractUjo.init(..) method after initialization!