public static Row extractRow(Page page, int position, List<Type> types) {
checkArgument(page.getChannelCount() == types.size(), "channelCount does not match");
checkArgument(
position < page.getPositionCount(),
"Requested position %s from a page with positionCount %s ",
position,
page.getPositionCount());
RowBuilder rowBuilder = new RowBuilder();
for (int channel = 0; channel < page.getChannelCount(); channel++) {
Block block = page.getBlock(channel);
Type type = types.get(channel);
int size;
Object value = getNativeContainerValue(type, block, position);
if (value == null) {
size = SIZE_OF_BYTE;
} else if (type.getJavaType() == boolean.class) {
size = SIZE_OF_BYTE;
} else if (type.getJavaType() == long.class) {
size = SIZE_OF_LONG;
} else if (type.getJavaType() == double.class) {
size = SIZE_OF_DOUBLE;
} else if (type.getJavaType() == Slice.class) {
size = ((Slice) value).length();
} else if (type.getJavaType() == Block.class) {
size = ((Block) value).getSizeInBytes();
} else {
throw new AssertionError("Unimplemented type: " + type);
}
rowBuilder.add(nativeContainerToOrcValue(type, value), size);
}
Row row = rowBuilder.build();
verify(
row.getColumns().size() == types.size(),
"Column count in row: %s Expected column count: %s",
row.getColumns().size(),
types.size());
return row;
}
public FileCursor(String displayName, File file) {
super(sColumns, 1);
RowBuilder row = newRow();
row.add(displayName);
row.add(file.length());
}