public void checkConstraints(ExampleTable et) {
super.checkConstraints(et);
RelationalAttribute relA = null;
for (int i = 0; i < et.getNumberOfAttributes(); i++)
if (et.getAttribute(i).getTableIndex() == this.getAttributeIndexes()[0]) {
relA = (RelationalAttribute) et.getAttribute(i);
break;
}
// sparse matrix inner relational attributes
if (relA.getInnerAttributeCount() != 2)
throw new IllegalArgumentException(
"sparse matrix attribute "
+ this.getName()
+ " must wrap relational attribute with exactly two inner attributes");
else if (!Ontology.ATTRIBUTE_VALUE_TYPE.isA(
relA.getInnerAttributeAt(0).getValueType(), Ontology.NUMERICAL))
throw new IllegalArgumentException(
"sparse matrix attribute "
+ this.getName()
+ " must wrap relational attribute which inner first attribute serves as key and therefore must be numerical");
}
