org.oddjob.values.properties

Class EnvVarPropertyLookup

java.lang.Object

org.oddjob.values.properties.EnvVarPropertyLookup

All Implemented Interfaces:

PropertyLookup

public class EnvVarPropertyLookup
extends java.lang.Object
implements PropertyLookup

A PropertyLookup for environment variables.

Author:

rob

Field Summary

Fields inherited from interface org.oddjob.arooa.runtime.PropertyLookup

SYSTEM_PROPERTY_SOURCE

Constructor Summary

Constructors

Constructor and Description
EnvVarPropertyLookup(java.lang.String prefix)

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.

Methods inherited from class java.lang.Object

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

Constructor Detail

EnvVarPropertyLookup

public EnvVarPropertyLookup(java.lang.String prefix)

Method Detail

lookup

public java.lang.String lookup(java.lang.String propertyName)

Description copied from interface: PropertyLookup

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

Specified by:

lookup in interface PropertyLookup

Parameters:

propertyName - The name of the property.

Returns:

The value or null.

propertyNames

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

Description copied from interface: PropertyLookup

Return all property names in this property lookup.

Specified by:

propertyNames in interface PropertyLookup

Returns:

The property names. Never null.

sourceFor

public PropertySource sourceFor(java.lang.String propertyName)

Description copied from interface: PropertyLookup

Return a source for the property.

Specified by:

sourceFor in interface PropertyLookup

Parameters:

propertyName - The property name.

Returns:

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