/**
* Sets the format of the input instances.
*
* @param instanceInfo an Instances object containing the input instance structure (any instances
* contained in the object are ignored - only the structure is required).
* @return true if the outputFormat may be collected immediately
* @exception Exception if the format couldn't be set successfully
*/
public boolean setInputFormat(Instances instanceInfo) throws Exception {
convertInfixToPostfix(new String(m_infixExpression));
super.setInputFormat(instanceInfo);
Instances outputFormat = new Instances(instanceInfo, 0);
Attribute newAttribute;
if (m_Debug) {
newAttribute = new Attribute(m_postFixExpVector.toString());
} else if (m_attributeName.compareTo("expression") != 0) {
newAttribute = new Attribute(m_attributeName);
} else {
newAttribute = new Attribute(m_infixExpression);
}
outputFormat.insertAttributeAt(newAttribute, instanceInfo.numAttributes());
setOutputFormat(outputFormat);
return true;
}
/**
* Sets the format of the input instances.
*
* @param instanceInfo an Instances object containing the input instance structure (any instances
* contained in the object are ignored - only the structure is required).
* @return true if the outputFormat may be collected immediately
*/
public boolean setInputFormat(Instances instanceInfo) throws Exception {
super.setInputFormat(instanceInfo);
setOutputFormat(instanceInfo);
return true;
}