Currently there is no ability to get a column value off a Row as an Object. The data type must always be known as a consequence.
While it is possible to do this via a helper method (see https://datastax-oss.atlassian.net/browse/JAVA-173#icft=JAVA-173), with more recent version of the driver this helper requires that the developer also includes the protocol version which does make it a bit less friendly for developers e.g. public static Object getObject(Row r, int index, int protocolVersion) { return r.getColumnDefinitions().getType(index).deserialize(r.getBytesUnsafe(index), protocolVersion); }
There are situations where the ability to write generic code to handle Rows like this is required and it would be helpful if this was part of the driver.
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Sylvain Lebresne
December 15, 2014 at 11:03 AM
I'll note that while I've disagreed with the addition of such method in the past (on the argument that it was easily doable with an helper function), I can admit that having to pass the protocol version makes it a bit more awkward now. So I think I'm now fine with adding this.
Currently there is no ability to get a column value off a Row as an Object. The data type must always be known as a consequence.
While it is possible to do this via a helper method (see https://datastax-oss.atlassian.net/browse/JAVA-173#icft=JAVA-173), with more recent version of the driver this helper requires that the developer also includes the protocol version which does make it a bit less friendly for developers
e.g.
public static Object getObject(Row r, int index, int protocolVersion) {
return r.getColumnDefinitions().getType(index).deserialize(r.getBytesUnsafe(index), protocolVersion);
}
There are situations where the ability to write generic code to handle Rows like this is required and it would be helpful if this was part of the driver.