/**
* Indicates if two OIDs have the same base type and contain the same values. Note that if values
* are null this isn't an ideal distinction; it's best to check "arePropertiesNull" before relying
* on this equals method (see DomainObject's equals method for an example).
*/
public boolean equals(Object obj) {
if (obj instanceof OID) {
OID oid = (OID) obj;
// we rely on the toString ecause the HashMap.equals does not
// give us what we need
return m_type.getBasetype().equals(oid.m_type.getBasetype()) && m_values.equals(oid.m_values);
}
return false;
}
/**
* Simple hashcode method to calculate hashcode based on the information used in the equals
* method. Needed because we overrode equals; two equivalent objects must hash to the same value.
*/
public int hashCode() {
// here we rely on the values collection's hashcode method
// to base its hashcode on the hashcodes of the contained values.
return (m_type.getBasetype().hashCode() + m_values.hashCode());
}