I am using datastax as a client for connecting to cassandra. I have successfully connected to cassandra cluster/keyspace/column families through Java. I am trying, firing some queries on cassandra column family thriugh java. For me it is working for simple queries like
ResultSet results = session.execute("select * from demodb.customer where id = 1");
Now I want to take id parameter from user and pass it to session.execute(); statement. How should I go about it?
Here is a code example of inserting data about an image using a prepared statements.
PreparedStatement statement = getSession().prepare(
"INSERT INTO pixelstore.image " +
"(image_name, " +
" upload_time, " +
" upload_by, " +
" file_type, " +
" file_size" +
") VALUES (?, ?, ?, ?, ?);");
// create the bound statement and initialise it with your prepared statement
BoundStatement boundStatement = new BoundStatement(statement);
session.execute( // this is where the query is executed
boundStatement.bind( // here you are binding the 'boundStatement'
"background", TimeUtil.getTimeUUID(), "lyubent", "png", "130527"));
There have been two recent blog posts on planet cassandra with a demo of what the driver can do, they contain code examples so check them out: