Field(String name, String label, Provider provider, Field base) {
this.name = name;
this.label = label == null ? name : label;
this.provider = provider;
// Information is provided in the base field
if (base != null) {
if (provider == null) {
// Ensure that the base field has everything calculated because we cannot calculate lazily
// later
base.makeNominalStats();
base.makeNumericStats();
base.makeDateStats();
}
copyPropertiesFrom(base);
}
}
public Object property(String key) {
Object o = super.property(key);
if (o == null) {
if (!calculatedNominal && NominalStats.creates(key)) {
makeNominalStats();
o = super.property(key);
}
if (!calculatedNumeric && NumericStats.creates(key)) {
if (!calculatedNominal) makeNominalStats();
makeNumericStats();
o = super.property(key);
}
if (!calculatedDate && DateStats.creates(key)) {
if (!calculatedNominal) makeNominalStats();
if (!calculatedNumeric) makeNumericStats();
makeDateStats();
o = super.property(key);
}
}
return o;
}