public static ObjectInspector createColumnarStructInspector(
List<String> columnNames, List<TypeInfo> columnTypes) {
ArrayList<ObjectInspector> columnObjectInspectors =
new ArrayList<ObjectInspector>(columnTypes.size());
for (int i = 0; i < columnTypes.size(); i++) {
columnObjectInspectors.add(
LazyBinaryUtils.getLazyBinaryObjectInspectorFromTypeInfo(columnTypes.get(i)));
}
return ObjectInspectorFactory.getColumnarStructObjectInspector(
columnNames, columnObjectInspectors);
}
private LazyBinaryStructObjectInspector createInternalOi(MapJoinObjectSerDeContext valCtx)
throws SerDeException {
// We are going to use LBSerDe to serialize values; create OI for retrieval.
List<? extends StructField> fields =
((StructObjectInspector) valCtx.getSerDe().getObjectInspector()).getAllStructFieldRefs();
List<String> colNames = new ArrayList<String>(fields.size());
List<ObjectInspector> colOis = new ArrayList<ObjectInspector>(fields.size());
for (int i = 0; i < fields.size(); ++i) {
StructField field = fields.get(i);
colNames.add(field.getFieldName());
// It would be nice if OI could return typeInfo...
TypeInfo typeInfo =
TypeInfoUtils.getTypeInfoFromTypeString(field.getFieldObjectInspector().getTypeName());
colOis.add(LazyBinaryUtils.getLazyBinaryObjectInspectorFromTypeInfo(typeInfo));
}
return LazyBinaryObjectInspectorFactory.getLazyBinaryStructObjectInspector(colNames, colOis);
}
