| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.cassandra.cql3; |
| |
| import java.util.Iterator; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| import org.junit.Test; |
| |
| import com.datastax.driver.core.*; |
| import com.datastax.driver.core.ResultSet; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| public class PagingQueryTest extends CQLTester |
| { |
| @Test |
| public void pagingOnRegularColumn() throws Throwable |
| { |
| createTable("CREATE TABLE %s (" + |
| " k1 int," + |
| " c1 int," + |
| " c2 int," + |
| " v1 text," + |
| " v2 text," + |
| " v3 text," + |
| " v4 text," + |
| "PRIMARY KEY (k1, c1, c2))"); |
| |
| for (int c1 = 0; c1 < 100; c1++) |
| { |
| for (int c2 = 0; c2 < 100; c2++) |
| { |
| execute("INSERT INTO %s (k1, c1, c2, v1, v2, v3, v4) VALUES (?, ?, ?, ?, ?, ?, ?)", 1, c1, c2, |
| Integer.toString(c1), Integer.toString(c2), someText(), someText()); |
| } |
| |
| if (c1 % 30 == 0) |
| flush(); |
| } |
| |
| flush(); |
| |
| try (Session session = sessionNet()) |
| { |
| SimpleStatement stmt = new SimpleStatement("SELECT c1, c2, v1, v2 FROM " + KEYSPACE + '.' + currentTable() + " WHERE k1 = 1"); |
| stmt.setFetchSize(3); |
| ResultSet rs = session.execute(stmt); |
| Iterator<Row> iter = rs.iterator(); |
| for (int c1 = 0; c1 < 100; c1++) |
| { |
| for (int c2 = 0; c2 < 100; c2++) |
| { |
| assertTrue(iter.hasNext()); |
| Row row = iter.next(); |
| String msg = "On " + c1 + ',' + c2; |
| assertEquals(msg, c1, row.getInt(0)); |
| assertEquals(msg, c2, row.getInt(1)); |
| assertEquals(msg, Integer.toString(c1), row.getString(2)); |
| assertEquals(msg, Integer.toString(c2), row.getString(3)); |
| } |
| } |
| assertFalse(iter.hasNext()); |
| |
| for (int c1 = 0; c1 < 100; c1++) |
| { |
| stmt = new SimpleStatement("SELECT c1, c2, v1, v2 FROM " + KEYSPACE + '.' + currentTable() + " WHERE k1 = 1 AND c1 = ?", c1); |
| stmt.setFetchSize(3); |
| rs = session.execute(stmt); |
| iter = rs.iterator(); |
| for (int c2 = 0; c2 < 100; c2++) |
| { |
| assertTrue(iter.hasNext()); |
| Row row = iter.next(); |
| String msg = "Within " + c1 + " on " + c2; |
| assertEquals(msg, c1, row.getInt(0)); |
| assertEquals(msg, c2, row.getInt(1)); |
| assertEquals(msg, Integer.toString(c1), row.getString(2)); |
| assertEquals(msg, Integer.toString(c2), row.getString(3)); |
| } |
| assertFalse(iter.hasNext()); |
| } |
| } |
| } |
| |
| private static String someText() |
| { |
| char[] arr = new char[1024]; |
| for (int i = 0; i < arr.length; i++) |
| arr[i] = (char)(32 + ThreadLocalRandom.current().nextInt(95)); |
| return new String(arr); |
| } |
| } |