// this family in the reference layout if present.
final ColumnId familyId = flayout.getId();
if (flayout.isMapType()) {
// If the family is map-type, get the CellSchema for all values in the family.
final CellSchema cellSchema = flayout.getDesc().getMapSchema();
FamilyLayout refFamilyLayout = null;
if (refLGLayout != null) {
// If there is a matching reference LG, check for the existence of this family.
final String refFamilyName = refLGLayout.getFamilyIdNameMap().get(familyId);
if (refFamilyName != null) {
refFamilyLayout = refLGLayout.getFamilyMap().get(refFamilyName);
}
}
if (refFamilyLayout != null) {
if (refFamilyLayout.isMapType()) {
// If the FamilyLayout from both table layouts are map type, compare their CellSchemas.
final CellSchema refCellSchema = refFamilyLayout.getDesc().getMapSchema();
incompatabilityMessages.addAll(addColumnNamestoIncompatibilityMessages(
flayout.getName(), null, validateCellSchema(refCellSchema, cellSchema)));
} else if (refFamilyLayout.isGroupType()) {
// If the FamilyLayout changed from group-type to map-type between table layout versions
// that is an incompatible change.
incompatabilityMessages.add(String.format(
"Family: %s changed from group-type to map-type.", refFamilyLayout.getName()));
} else {
throw new InternalKijiError(String.format(
"Family: %s is neither map-type nor group-type.", refFamilyLayout.getName()));
}
} else {
// If the reference FamilyLayout is null this indicates a new family, which is inherently
// compatible, but we still have to validate that the new readers and writers are
// internally compatible.
incompatabilityMessages.addAll(addColumnNamestoIncompatibilityMessages(
flayout.getName(), null, validateCellSchema(null, cellSchema)));
}
} else if (flayout.isGroupType()) {
// Check for a matching family from the reference layout.
FamilyLayout refFamilyLayout = null;
if (refLGLayout != null) {
final String refFamilyName = refLGLayout.getFamilyIdNameMap().get(familyId);
if (refFamilyName != null) {
refFamilyLayout = refLGLayout.getFamilyMap().get(refFamilyName);
}
}
if (refFamilyLayout != null) {
if (refFamilyLayout.isGroupType()) {
// If there is a matching reference family and it is the same family type, iterate
// through the columns checking schema compatibility. Only checks columns from the new
// layout because removed columns are inherently valid.
for (ColumnLayout columnLayout : flayout.getColumns()) {
final CellSchema cellSchema = columnLayout.getDesc().getColumnSchema();
final String refColumnName =
refFamilyLayout.getColumnIdNameMap().get(columnLayout.getId());
ColumnLayout refColumnLayout = null;
if (refColumnName != null) {
// If there is a column from the reference layout with the same column ID, get its
// layout.
refColumnLayout = refFamilyLayout.getColumnMap().get(refColumnName);
}
// If there is a column from the reference layout with the same column ID, get its
// CellSchema.
final CellSchema refCellSchema =
(refColumnLayout == null) ? null : refColumnLayout.getDesc().getColumnSchema();
// If there is no matching column, refCellSchema will be null and this will only test
// that the new reader and writer schemas are internally compatible.
incompatabilityMessages.addAll(addColumnNamestoIncompatibilityMessages(
flayout.getName(),
columnLayout.getName(),
validateCellSchema(refCellSchema, cellSchema)));
}
} else if (refFamilyLayout.isMapType()) {
// If the FamilyLayout changed from map-type to group-type between table layout versions
// that is an incompatible change.
incompatabilityMessages.add(String.format(
"Family: %s changed from map-type to group-type.", refFamilyLayout.getName()));
} else {
throw new InternalKijiError(String.format(
"Family: %s is neither map-type nor group-type.", refFamilyLayout.getName()));
}
} else {
// If the reference FamilyLayout is null this indicates a new family, which is inherently
// compatible, but we still have to validate that the new readers and writers are
// internally compatible.
for (ColumnLayout columnLayout : flayout.getColumns()) {
final CellSchema cellSchema = columnLayout.getDesc().getColumnSchema();
incompatabilityMessages.addAll(addColumnNamestoIncompatibilityMessages(
flayout.getName(), columnLayout.getName(), validateCellSchema(null, cellSchema)));
}
}