private String returnHigherPrecendenceString(String value1, String value2) {
if (value1.equals(value2)) {
return value1;
} else if (oneStringEmpty(value1, value2)) {
return returnNonEmptyString(value1, value2);
} else if (vitalStatusChanged(value1, value2)) {
if (VitalStatusAlive.has(value1) && VitalStatusDead.has(value2))
return VitalStatusDead.DEAD.toString(); // alive - dead --> dead
if (VitalStatusDead.has(value1) && VitalStatusAlive.has(value2))
return VitalStatusDead.DEAD.toString(); // dead - alive --> dead
if (VitalStatusAlive.has(value1) && !VitalStatusDead.has(value2))
return VitalStatusAlive.ALIVE.toString(); // alive - [Not Available] --> alive
if (VitalStatusDead.has(value1) && !VitalStatusAlive.has(value2))
return VitalStatusDead.DEAD.toString(); // dead - [Not Available] --> dead
if (!VitalStatusAlive.has(value1) && VitalStatusAlive.has(value2))
return VitalStatusAlive.ALIVE.toString(); // [Not Available] - alive --> alive
if (!VitalStatusAlive.has(value1) && VitalStatusDead.has(value2))
return VitalStatusDead.DEAD.toString(); // [Not Available] - deade --> dead
return VitalStatusDead.DEAD.toString();
} else if (missingAttributeChanged(value1, value2)) {
return returnHigherPrecedenceMissingAttribute(value1, value2);
}
assert true == false : String.format("returnHigherPrecendenceString, %s, %s", value1, value2);
return MissingAttributeValues.MISSING.toString();
}
// assumes value1 and value2 are Missing attributes and not equal
private String returnHigherPrecedenceMissingAttribute(String value1, String value2) {
if (value1.equals(MissingAttributeValues.NULL.toString())
&& MissingAttributeValues.has(value2)
&& !value2.equals(MissingAttributeValues.NULL.toString())) {
return value1;
} else if (value2.equals(MissingAttributeValues.NULL.toString())
&& MissingAttributeValues.has(value1)
&& !value1.equals(MissingAttributeValues.NULL.toString())) {
return value2;
}
assert true == false
: String.format("returnHigherPrecendenceMissingAttribute, %s, %s", value1, value2);
return MissingAttributeValues.MISSING.toString();
}
