In Cassandra, it's ModificationStatement.CAS_RESULT_COLUMN.text
On Thu, Feb 6, 2014 at 10:22 AM, Brian O'Neill <b...@alumni.brown.edu> wrote:
> Silly questionŠ
>
> Using the CQL driver for conditional updates, I¹m looking into the ResultSet
> that comes back:
> for (ColumnDefinitions.Definition definition :
> results.getColumnDefinitions().asList()) {
> for (Row row : results.all()) {
> LOG.debug("UPDATE APPLIED = [{}]=[{}]",
> definition.getName(), row.getBool(definition.getName()));
> }
> }
>
> I noticed that the ResultSet of a conditional update contains a column
> ³[applied]², with a boolean indicating whether or not the update was
> applied.
>
> I assume this column name comes from:
> src/java/org/apache/cassandra/cql3/statements/ModificationStatement.java:50
> private static final ColumnIdentifier CAS_RESULT_COLUMN = new
> ColumnIdentifier("[applied]", false);
>
> Does it make sense to expose this column name as a String constant
> somewhere?
> Either in the CQL java-driver, or Cassandra itself?
>
> -brian
>
> ---
> Brian O'Neill
> Chief Technology Officer
>
>
> Health Market Science
> The Science of Better Results
> 2700 Horizon Drive € King of Prussia, PA € 19406
> M: 215.588.6024 € @boneill42 <http://www.twitter.com/boneill42> €
> healthmarketscience.com
>
>
> This information transmitted in this email message is for the intended
> recipient only and may contain confidential and/or privileged material. If
> you received this email in error and are not the intended recipient, or the
> person responsible to deliver it to the intended recipient, please contact
> the sender at the email above and delete this email and any attachments and
> destroy any copies thereof. Any review, retransmission, dissemination,
> copying or other use of, or taking any action in reliance upon, this
> information by persons or entities other than the intended recipient is
> strictly prohibited.
>
>
>
--
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced
