[
https://issues.apache.org/jira/browse/CASSANDRA-8790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317006#comment-14317006
]
Johnny Miller commented on CASSANDRA-8790:
------------------------------------------
I think it is specifically around non-printable unicode characters e.g. \u001C
> Improve handling of unicode characters in text fields
> -----------------------------------------------------
>
> Key: CASSANDRA-8790
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8790
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Johnny Miller
> Priority: Minor
>
> Currently to store a string/text value that contains a unicode character and
> than subsequently be able to query it CQLSH I need to store the field as a
> blob via the blobAsText and textAsBlob functions.
> This is not really optimal - it would be better if CQLSH handled this rather
> than having to model data around this limitation.
> For example:
> {code:title=Example Code|borderStyle=solid}
> String createTableCql = "CREATE TABLE IF NOT EXISTS test_ks.testunicode (id
> blob PRIMARY KEY, inserted_on timestamp, lorem text)";
> session.execute(createTableCql);
> System.out.println("Table created.");
>
> String dimension1 = "state";
> String dimension2 = "card";
> String key = dimension1 + '\u001C' + dimension2;
> Date now = new Date();
> String lorem = "Lorem ipsum dolor sit amet.";
>
> String insertcql = "INSERT INTO testunicode (id, inserted_on, lorem) VALUES
> (textAsBlob(?), ?, ?)";
> PreparedStatement ps = session.prepare(insertcql);
> BoundStatement bs = new BoundStatement(ps);
> bs.bind(key, now, lorem);
> session.execute(bs);
> System.out.println("Row inserted with key "+key);
>
> String selectcql = "SELECT blobAsText(id) AS id, inserted_on, lorem FROM
> testunicode WHERE id = textAsBlob(?)";
> PreparedStatement ps2 = session.prepare(selectcql);
> BoundStatement bs2 = new BoundStatement(ps2);
> bs2.bind(key);
> ResultSet results = session.execute(bs2);
>
> System.out.println("Got results...");
>
> for (Row row : results) {
> System.out.println(String.format("%-30s\t%-20s\t%-20s",
> row.getString("id"), row.getDate("inserted_on"), row.getString("lorem")));
> }
> {code}
> And to query via CQLSH:
> select * from testunicode where id = 0x73746174651c63617264 ;
> id | inserted_on | lorem
> ------------------------+--------------------------+-----------------------------
> 0x73746174651c63617264 | 2015-02-11 20:32:20+0000 | Lorem ipsum dolor sit
> amet.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
