@Override
protected MetaData modifyMetaData(ExampleSetMetaData metaData) throws UndefinedParameterError {
AttributeMetaData amd =
metaData.getAttributeByName(getParameterAsString(PARAMETER_ATTRIBUTE_NAME));
if (amd != null) {
AttributeMetaData newAttribute = amd.clone();
newAttribute.setType(Ontology.DATE_TIME);
newAttribute.getMean().setUnkown();
newAttribute.setValueSetRelation(SetRelation.UNKNOWN);
if (!getParameterAsBoolean(PARAMETER_KEEP_OLD_ATTRIBUTE)) metaData.removeAttribute(amd);
else newAttribute.setName(newAttribute.getName() + "_AS_DATE");
metaData.addAttribute(newAttribute);
}
return metaData;
}
/**
* Subclasses might override this method to define the meta data transformation performed by this
* operator. The default implementation takes all attributes specified by the {@link
* AttributeSubsetSelector} and passes them to {@link #modifyAttributeMetaData(ExampleSetMetaData,
* AttributeMetaData)} and replaces them accordingly.
*
* @throws UndefinedParameterError
*/
@Override
protected ExampleSetMetaData modifyMetaData(ExampleSetMetaData exampleSetMetaData)
throws UndefinedParameterError {
ExampleSetMetaData subsetMetaData =
attributeSelector.getMetaDataSubset(exampleSetMetaData, isSupportingAttributeRoles());
checkSelectedSubsetMetaData(subsetMetaData);
for (AttributeMetaData amd : subsetMetaData.getAllAttributes()) {
Collection<AttributeMetaData> replacement = null;
replacement = modifyAttributeMetaData(exampleSetMetaData, amd);
if (replacement != null) {
if (replacement.size() == 1) {
AttributeMetaData replacementAttribute = replacement.iterator().next();
replacementAttribute.setRole(
exampleSetMetaData.getAttributeByName(amd.getName()).getRole());
}
exampleSetMetaData.removeAttribute(amd);
exampleSetMetaData.addAllAttributes(replacement);
}
}
return exampleSetMetaData;
}