net.dpml.util
Class SimpleResolver

java.lang.Object
  net.dpml.util.SimpleResolver

All Implemented Interfaces:

Resolver

public class SimpleResolver

extends Object

implements Resolver

Build-time value resolver.

Constructor Summary

SimpleResolver()

Method Summary

String	getProperty(String key) Return a property value.
String	getProperty(String key, String value) Return a property value.
String	resolve(String value) Symbolic expansion of a supplied value.
URI	toURI(String ref) Utility function supporting resolution of uris containing 'resource' or 'alias' schemes.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleResolver

public SimpleResolver()

Method Detail

toURI

public URI toURI(String ref)
          throws URISyntaxException

Utility function supporting resolution of uris containing 'resource' or 'alias' schemes. If the supplied uri scheme is 'resource' or 'alias' the reference is resolved to a artifact type, group and name from which a resource is resolved and the uri returned. If the scheme is resource the usi of the resource is returned. If the scheme is 'alias' a link alias is returned. If the scheme is not 'resource' or 'alias' the argument will be evaluated as a normal transit artifact uri specification.

Specified by:

toURI in interface Resolver

Parameters:

ref - the uri argument

Returns:

the uri value

Throws:

URISyntaxException - if an error occurs during uri creation

getProperty

public String getProperty(String key)

Return a property value.

Specified by:

getProperty in interface Resolver

Parameters:

key - the property key

Returns:

the property value

getProperty

public String getProperty(String key,
                          String value)

Return a property value.

Specified by:

getProperty in interface Resolver

Parameters:

key - the property key

value - the default value

Returns:

the property value

resolve

public String resolve(String value)

Symbolic expansion of a supplied value. Replace any occurances of ${[key]} with the value of the property assigned to the [key] in system properties.

Specified by:

resolve in interface Resolver

Parameters:

value - a string containing possibly multiple ${[value]} sequences

Returns:

the expanded string