// precondition: info1.field.equals(info2.field);
static Info mergeInfos(
Info info1, Info info2, AbstractSession session, ClassDescriptor descriptor) {
boolean ok = true;
DatabaseField fieldMerged = info1.getField();
if (info2.getField().getType() != null) {
if (info1.getField().getType() == null) {
fieldMerged = info2.field;
} else if (!info1.getField().getType().equals(info2.getField().getType())) {
session
.getIntegrityChecker()
.handleError(
DescriptorException.returningPolicyFieldTypeConflict(
info1.getField().getName(),
info1.getField().getType().getName(),
info2.getField().getType().getName(),
descriptor));
ok = false;
}
}
boolean isInsertMerged = false;
boolean isInsertModeReturnOnlyMerged = false;
if (info1.isInsert() && !info2.isInsert()) {
isInsertMerged = true;
isInsertModeReturnOnlyMerged = info1.isInsertModeReturnOnly();
} else if (!info1.isInsert() && info2.isInsert()) {
isInsertMerged = true;
isInsertModeReturnOnlyMerged = info2.isInsertModeReturnOnly();
} else if (info1.isInsert() && info2.isInsert()) {
isInsertMerged = true;
isInsertModeReturnOnlyMerged = info1.isInsertModeReturnOnly();
if (info1.isInsertModeReturnOnly() != info2.isInsertModeReturnOnly()) {
session
.getIntegrityChecker()
.handleError(
DescriptorException.returningPolicyFieldInsertConflict(
info1.getField().getName(), descriptor));
ok = false;
}
}
if (ok) {
// merging
boolean isUpdateMerged = info1.isUpdate() || info2.isUpdate();
return new Info(fieldMerged, isInsertMerged, isInsertModeReturnOnlyMerged, isUpdateMerged);
} else {
// there is a problem - can't merge
return null;
}
}
boolean equals(Info infoToCompare) {
if (this == infoToCompare) {
return true;
}
if (!getField().equals(infoToCompare.getField())) {
return false;
}
if ((getField().getType() == null) && (infoToCompare.getField().getType() != null)) {
return false;
}
if ((getField().getType() != null)
&& !getField().getType().equals(infoToCompare.getField().getType())) {
return false;
}
if (isInsert() != infoToCompare.isInsert()) {
return false;
}
if (isInsertModeReturnOnly() != infoToCompare.isInsertModeReturnOnly()) {
return false;
}
if (isUpdate() != infoToCompare.isUpdate()) {
return false;
}
return true;
}