org.oddjob.arooa.runtime

Interface PropertyLookup

All Known Subinterfaces:

PropertyManager

All Known Implementing Classes:

EnvVarPropertyLookup, 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
java.lang.String	lookup(java.lang.String propertyName) Return the value of a property, or null if it doesn't exist.
java.util.Set<java.lang.String>	propertyNames() Return all property names in this property lookup.
PropertySource	sourceFor(java.lang.String propertyName) Return a source for the property.

Field Detail

SYSTEM_PROPERTY_SOURCE

static final PropertySource SYSTEM_PROPERTY_SOURCE

Method Detail

lookup

java.lang.String lookup(java.lang.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(java.lang.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

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

Return all property names in this property lookup.

Returns:

The property names. Never null.