Package org.openxava.util

Class PropertiesManager

java.lang.Object

org.openxava.util.PropertiesManager

All Implemented Interfaces:

Serializable

public class PropertiesManager
extends Object
implements Serializable

Manages with reflection the properties of a object.

Excludes automatically the property class of Object and the indexed properties with no indexed access.

Author:

Javier Paniza

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
PropertiesManager()
PropertiesManager(Class theClass)	Constructor from a the class of the object to manage.
PropertiesManager(Object object)	Constructor from the object to manage.

Method Summary

Modifier and Type	Method	Description
Object	executeGet(String propertyName)	Gets the value of the indicated property.
Map	executeGets(String properties)	Gets a group of property values in a map.
void	executeSet(String propertyName, Object value)	Update property.
void	executeSetFromString(String propertyName, Object value)	Update property from a string, making needed conversions.
void	executeSets(Map properties)	Sets property values from a map.
void	executeSetsFromStrings(Map properties)	Sets property values from a map, trying to convert strings to value of valid type for properties.
boolean	exists(String propertyName)	If the property exists.
Object	getObject()	Object of which the properties are handled.
String[]	getPropertiesNames()	Names of all properties managed by this.
PropertyDescriptor	getPropertyDescriptor(String propertyName)
String[]	getReadablesPropertiesNames()	Names of all properties managed by this with getter method.
String[]	getWritablesPropertiesNames()	Names of all properties managed by this with setter method.
boolean	hasGetter(String propertyName)	If the property has getter.
boolean	hasSetter(String propertyName)	If the property has setter.
void	setObject(Object newObject)	Object of which the properties are handled.

Methods inherited from class java.lang.Object

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

Constructor Details

PropertiesManager

public PropertiesManager()

PropertiesManager

public PropertiesManager(Class theClass)

Constructor from a the class of the object to manage. This initial value can change in the life of this.

PropertiesManager

public PropertiesManager(Object object)

Constructor from the object to manage.

Parameters:

object - Object to manage

Method Details

executeGet

public Object executeGet(String propertyName)
                  throws InvocationTargetException,
PropertiesManagerException

Gets the value of the indicated property.

Parameters:

propertyName - Property name to obtain its value, can be qualified (that is: 'customer.address.street' for example)

Returns:

Value of the property

Throws:

InvocationTargetException - Exception originated by the original access method

PropertiesManagerException - Some unexpected problem

executeGets

public Map executeGets(String properties)
                throws InvocationTargetException,
PropertiesManagerException

Gets a group of property values in a map.

Precondition

• this.object != null

Parameters:

properties - Names of properties to get, separated by colon (:). The properties must to exist in the object. If properties is null a empty map is returned.

Returns:

Map with String propertyName:Object value. Not null.

Throws:

InvocationTargetException - Exception originated by original access method

PropertiesManagerException - Some unexpected problem

executeSet

public void executeSet(String propertyName,
 Object value)
                throws InvocationTargetException,
PropertiesManagerException

Update property.

Precondition

• this.object != null

Parameters:

propertyName - Property name to update

value - New value for property. Has to be of compatible type. If value is a Map and the property type is not a map then convert the map in an object of the property type.

Throws:

InvocationTargetException - Excepction originated from original access method

PropertiesManagerException - Any unexpected problem

executeSetFromString

public void executeSetFromString(String propertyName,
 Object value)
                          throws InvocationTargetException,
PropertiesManagerException

Update property from a string, making needed conversions.

Precondition

• this.object != null

Parameters:

propertyName - Name of property to update

value - New value for property. Must to be a compatible type or a string parseable to a compatible type.

Throws:

InvocationTargetException - Exception from original access method

PropertiesManagerException - Any unexpected problem

executeSets

public void executeSets(Map properties)
                 throws InvocationTargetException,
PropertiesManagerException

Sets property values from a map.

Precondition

• this.object != null
• this.hasSetter(propertyName)

Supports nested Maps.

Parameters:

properties - Map with String propertyName:Object value. Null is assumed as empty map

Throws:

InvocationTargetException - Excepcion from original access method

PropertiesManagerException - Any unexpected method

executeSetsFromStrings

public void executeSetsFromStrings(Map properties)
                            throws InvocationTargetException,
PropertiesManagerException

Sets property values from a map, trying to convert strings to value of valid type for properties.

Precondition

• this.object != null
• this.hasSetter(propertyName)

Parameters:

properties - Map with String propertyName:Object value. Null is assumed as empty map

Throws:

InvocationTargetException - Excepcion from original access method

PropertiesManagerException - Any unexpected method

exists

public boolean exists(String propertyName)
               throws PropertiesManagerException

If the property exists.

Throws:

PropertiesManagerException

getPropertiesNames

public String[] getPropertiesNames()
                            throws PropertiesManagerException

Names of all properties managed by this.

Returns:

Not null

Throws:

PropertiesManagerException

getWritablesPropertiesNames

public String[] getWritablesPropertiesNames()
                                     throws PropertiesManagerException

Names of all properties managed by this with setter method.

Returns:

Not null

Throws:

PropertiesManagerException

getReadablesPropertiesNames

public String[] getReadablesPropertiesNames()
                                     throws PropertiesManagerException

Names of all properties managed by this with getter method.

Returns:

Not null

Throws:

PropertiesManagerException

getObject

public Object getObject()

Object of which the properties are handled.

getPropertyDescriptor

public PropertyDescriptor getPropertyDescriptor(String propertyName)
                                         throws PropertiesManagerException

Throws:

PropertiesManagerException

setObject

public void setObject(Object newObject)

Object of which the properties are handled.

hasGetter

public boolean hasGetter(String propertyName)
                  throws PropertiesManagerException

If the property has getter.

Throws:

PropertiesManagerException

hasSetter

public boolean hasSetter(String propertyName)
                  throws PropertiesManagerException

If the property has setter.

Throws:

PropertiesManagerException