public static boolean isSupportedKey(ObjectInspector keyOi) {
List<? extends StructField> keyFields = ((StructObjectInspector) keyOi).getAllStructFieldRefs();
for (StructField field : keyFields) {
if (!MapJoinKey.isSupportedField(field.getFieldObjectInspector())) {
return false;
}
}
return true;
}
@Override
public JoinUtil.JoinResult setFromRow(
Object row, List<ExprNodeEvaluator> fields, List<ObjectInspector> ois)
throws HiveException {
if (nulls == null) {
nulls = new boolean[fields.size()];
currentKey = new Object[fields.size()];
}
for (int keyIndex = 0; keyIndex < fields.size(); ++keyIndex) {
currentKey[keyIndex] = fields.get(keyIndex).evaluate(row);
nulls[keyIndex] = currentKey[keyIndex] == null;
}
return currentValue.setFromOutput(
MapJoinKey.serializeRow(output, currentKey, ois, sortableSortOrders));
}
@Override
public JoinUtil.JoinResult setFromVector(
VectorHashKeyWrapper kw,
VectorExpressionWriter[] keyOutputWriters,
VectorHashKeyWrapperBatch keyWrapperBatch)
throws HiveException {
if (nulls == null) {
nulls = new boolean[keyOutputWriters.length];
currentKey = new Object[keyOutputWriters.length];
vectorKeyOIs = new ArrayList<ObjectInspector>();
for (int i = 0; i < keyOutputWriters.length; i++) {
vectorKeyOIs.add(keyOutputWriters[i].getObjectInspector());
}
} else {
assert nulls.length == keyOutputWriters.length;
}
for (int i = 0; i < keyOutputWriters.length; i++) {
currentKey[i] = keyWrapperBatch.getWritableKeyValue(kw, i, keyOutputWriters[i]);
nulls[i] = currentKey[i] == null;
}
return currentValue.setFromOutput(
MapJoinKey.serializeRow(output, currentKey, vectorKeyOIs, sortableSortOrders));
}