public boolean isDouble() { return iri.toURI().equals(OWL2Datatype.XSD_DOUBLE.getURI()); }
public boolean isString() { return iri.toURI().equals(OWL2Datatype.XSD_STRING.getURI()); }
public boolean isFloat() { return iri.toURI().equals(OWL2Datatype.XSD_FLOAT.getURI()); }
public boolean isInteger() { return iri.toURI().equals(OWL2Datatype.XSD_INTEGER.getURI()); }
public boolean isBoolean() { return iri.toURI().equals(OWL2Datatype.XSD_BOOLEAN.getURI()); }