org.apache.anteater.test.meta
Class ExistenceChecker

java.lang.Object
  |
  +--org.apache.anteater.test.meta.AbstractChecker
        |
        +--org.apache.anteater.test.meta.ExistenceChecker

All Implemented Interfaces:

FeatureChecker

Direct Known Subclasses:

ValueChecker, VersionChecker

public class ExistenceChecker

extends AbstractChecker

A FeatureChecker that specifies that a certain feature must exist. The implementation checks for the 'anteater.[feature]' property, and suggests the user run 'anteater-update' to obtain the feature.

Version:

$Revision: 1.1 $ $Date: 2002/10/17 10:21:15 $

Author:

Jeff Turner

Field Summary

Fields inherited from class org.apache.anteater.test.meta.AbstractChecker

features

Constructor Summary

ExistenceChecker()

Method Summary

String	checkFeature(Feature f) Check whether this Anteater installation has a feature.
String[]	getCheckedFeatures() Gets an array of names of features that the implementing FeatureChecker can process.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExistenceChecker

public ExistenceChecker()

Method Detail

getCheckedFeatures

public String[] getCheckedFeatures()

Description copied from interface: FeatureChecker

Gets an array of names of features that the implementing FeatureChecker can process.

Specified by:

getCheckedFeatures in interface FeatureChecker

Specified by:

getCheckedFeatures in class AbstractChecker

checkFeature

public String checkFeature(Feature f)

Description copied from interface: FeatureChecker

Check whether this Anteater installation has a feature.

Specified by:

checkFeature in interface FeatureChecker

Specified by:

checkFeature in class AbstractChecker

Parameters:

f - The feature we require.

Returns:

A String error message if the feature is missing, or null if the feature is present.