com.planetalia.dynject.injection
Interface IValueSource<T>

All Known Implementing Classes:

HttpRequestSource, MapSource, ObjectSource, ShellSource, StructuredContentSource, SwingSource, XMLContentSource

public interface IValueSource<T>

Interface that acts as a generic provider of values to the system

Author:

Alexander Hristov

Method Summary

ClassPreferences	getPropertyClass(java.lang.String propertyName) Returns the class preferences for a property
java.util.Set<java.lang.String>	getPropertyNames() Returns the set of all existing properties at the time of invocation.
java.lang.Object	getValue(java.lang.String propertyName) Provides the value of a specific property
boolean	propertyExists(java.lang.String propertyName) Checks whether a specific property exists.
void	setValue(java.lang.String propertyName, T value) Sets the value of a specific property.

Method Detail

getValue

java.lang.Object getValue(java.lang.String propertyName)

Provides the value of a specific property

Parameters:

propertyName - Name of the requested property. Assumed to exist.

Returns:

Property value

setValue

void setValue(java.lang.String propertyName,
              T value)

Sets the value of a specific property. It's the callers responsability to provide a correct data type for that property. This is an optional operation. Some sources do not support writing properties to them

Parameters:

propertyName - Name of the requested property.

value - Property value.

getPropertyNames

java.util.Set<java.lang.String> getPropertyNames()

Returns the set of all existing properties at the time of invocation.

Returns:

Set of property names

getPropertyClass

ClassPreferences getPropertyClass(java.lang.String propertyName)

Returns the class preferences for a property

Parameters:

propertyName - Name of the property

Returns:

List of class preferences for that property

propertyExists

boolean propertyExists(java.lang.String propertyName)

Checks whether a specific property exists. Not that a nonexistant property and a proprerty with a null value are not the same situation

Parameters:

propertyName - Name of the requested property

Returns:

True if the property exists, false otherwise