org.oddjob.arooa.runtime

Interface PropertyLookup

All Known Subinterfaces:

PropertyManager

All Known Implementing Classes:

StandardPropertyLookup, StandardPropertyManager

public interface PropertyLookup

Something for looking up properties.

Author:

rob

Field Summary

Fields

Modifier and Type	Field and Description
static PropertySource	SYSTEM_PROPERTY_SOURCE

Method Summary

Modifier and Type	Method and Description
String	lookup(String propertyName) Return the value of a property, or null if it doesn't exist.
Set<String>	propertyNames() Return all property names in this property lookup.
PropertySource	sourceFor(String propertyName) Return a source for the property.

Field Detail

SYSTEM_PROPERTY_SOURCE

static final PropertySource SYSTEM_PROPERTY_SOURCE

Method Detail

lookup

String lookup(String propertyName)

Return the value of a property, or null if it doesn't exist.

Parameters:

propertyName - The name of the property.

Returns:

The value or null.

sourceFor

PropertySource sourceFor(String propertyName)

Return a source for the property.

Parameters:

propertyName - The property name.

Returns:

The source, or null if the property isn't known.

propertyNames

Set<String> propertyNames()

Return all property names in this property lookup.

Returns:

The property names. Never null.