CassError insert_into_batch_with_prepared(CassSession* session, const CassPrepared* prepared, const Pair* pairs) { CassError rc = CASS_OK; CassFuture* future = NULL; CassBatch* batch = cass_batch_new(CASS_BATCH_TYPE_LOGGED); const Pair* pair; for (pair = pairs; pair->key != NULL; pair++) { CassStatement* statement = cass_prepared_bind(prepared); cass_statement_bind_string(statement, 0, pair->key); cass_statement_bind_string(statement, 1, pair->value); cass_batch_add_statement(batch, statement); cass_statement_free(statement); } { CassStatement* statement = cass_statement_new("INSERT INTO examples.pairs (key, value) VALUES ('c', '3')", 0); cass_batch_add_statement(batch, statement); cass_statement_free(statement); } { CassStatement* statement = cass_statement_new("INSERT INTO examples.pairs (key, value) VALUES (?, ?)", 2); cass_statement_bind_string(statement, 0, "d"); cass_statement_bind_string(statement, 1, "4"); cass_batch_add_statement(batch, statement); cass_statement_free(statement); } future = cass_session_execute_batch(session, batch); cass_future_wait(future); rc = cass_future_error_code(future); if (rc != CASS_OK) { print_error(future); } cass_future_free(future); cass_batch_free(batch); return rc; }
void execute(CassSession *session, const char *what) { CassandraFuture futureBatch(cass_session_execute_batch(session, batch)); futureBatch.wait(what); }
static int librdf_storage_cassandra_add_statements(librdf_storage* storage, librdf_stream* statement_stream) { librdf_storage_cassandra_instance* context; context = (librdf_storage_cassandra_instance*)storage->instance; CassBatch* batch = 0; const int batch_size = 10; int rows = 0; for(; !librdf_stream_end(statement_stream); librdf_stream_next(statement_stream)) { librdf_statement* statement; librdf_node* context_node; statement = librdf_stream_get_object(statement_stream); context_node = librdf_stream_get_context2(statement_stream); if(!statement) { break; } char* s; char* p; char* o; char* c; statement_helper(storage, statement, context_node, &s, &p, &o, &c); if (batch == 0) batch = cass_batch_new(CASS_BATCH_TYPE_LOGGED); char* query = "INSERT INTO rdf.spo (s, p, o) VALUES (?, ?, ?);"; CassStatement* stmt = cass_statement_new(query, 3); cass_statement_bind_string(stmt, 0, s); cass_statement_bind_string(stmt, 1, p); cass_statement_bind_string(stmt, 2, o); cass_batch_add_statement(batch, stmt); cass_statement_free(stmt); query = "INSERT INTO rdf.pos (s, p, o) VALUES (?, ?, ?);"; stmt = cass_statement_new(query, 3); cass_statement_bind_string(stmt, 0, s); cass_statement_bind_string(stmt, 1, p); cass_statement_bind_string(stmt, 2, o); cass_batch_add_statement(batch, stmt); cass_statement_free(stmt); query = "INSERT INTO rdf.osp (s, p, o) VALUES (?, ?, ?);"; stmt = cass_statement_new(query, 3); cass_statement_bind_string(stmt, 0, s); cass_statement_bind_string(stmt, 1, p); cass_statement_bind_string(stmt, 2, o); cass_batch_add_statement(batch, stmt); cass_statement_free(stmt); free(s); free(p); free(o); if (++rows > batch_size) { CassFuture* future = cass_session_execute_batch(context->session, batch); cass_batch_free(batch); CassError rc = cass_future_error_code(future); if (rc != CASS_OK) { fprintf(stderr, "Cassandra: %s\n", cass_error_desc(rc)); const char* msg; size_t msg_len; cass_future_error_message(future, &msg, &msg_len); fprintf(stderr, "Cassandra: %*s\n", msg_len, msg); cass_future_free(future); return -1; } cass_future_free(future); batch = 0; } } if (batch) { CassFuture* future = cass_session_execute_batch(context->session, batch); cass_batch_free(batch); CassError rc = cass_future_error_code(future); if (rc != CASS_OK) { fprintf(stderr, "Cassandra: %s\n", cass_error_desc(rc)); const char* msg; size_t msg_len; cass_future_error_message(future, &msg, &msg_len); fprintf(stderr, "Cassandra: %*s\n", msg_len, msg); cass_future_free(future); return -1; } cass_future_free(future); } return 0; }