Java tutorial
/* * Copyright 2013 EK3 Technologies, Inc. * * Licensed 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 ei.ne.ke.cassandra.cql3; import java.util.List; import java.util.concurrent.TimeUnit; import org.apache.commons.lang.math.RandomUtils; import org.junit.After; import org.junit.Assert; import org.junit.Before; import org.junit.Ignore; import org.junit.Test; import org.junit.runner.RunWith; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.Page; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; import com.google.common.base.Stopwatch; import com.google.common.collect.Lists; import com.mysema.query.types.ConstantImpl; import com.mysema.query.types.Ops; import com.mysema.query.types.expr.BooleanOperation; import com.netflix.astyanax.AstyanaxContext; import com.netflix.astyanax.Keyspace; import ei.ne.ke.cassandra.cql3.example.PagingAndSortingEntity; import ei.ne.ke.cassandra.cql3.example.PagingAndSortingEntityRepository; @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration("classpath:beans/astyanax-cql3-paging-and-sorting-test.xml") public class AstyanaxCql3PagingAndSortingTest { private static final Logger LOGGER = LoggerFactory.getLogger(AstyanaxCql3PagingAndSortingTest.class); private static final int N = 3000; @Autowired private AstyanaxContext<Keyspace> keyspaceContext; @Autowired private PagingAndSortingEntityRepository repository; @Before public void initializeContext() throws Exception { Cassandra.initialize(keyspaceContext.getClient()); } @After public void truncateTables() throws Exception { Cassandra.truncateTables(keyspaceContext.getClient()); } @Before public void populateTable() throws Exception { List<PagingAndSortingEntity> entities = Lists.newArrayListWithExpectedSize(N); for (int i = 0; i < N; i++) { PagingAndSortingEntity entity = new PagingAndSortingEntity("foo", Integer.toString(i), i, RandomUtils.nextInt(N)); entities.add(entity); } repository.save(entities); Thread.sleep(1000); } @Test @Ignore public void everyPage() { int pageSize = 25; int totalPages = N / 25; Stopwatch sw = new Stopwatch(); for (int pageNumber = 0; pageNumber < N / pageSize; pageNumber++) { sw.start(); Page<PagingAndSortingEntity> page = repository.findAll(new PagingAndSortingEntity.CompoundKey("foo"), new PageableImpl(pageNumber, 25, 0, null)); Assert.assertEquals(pageNumber, page.getNumber()); Assert.assertEquals(pageSize, page.getSize()); Assert.assertEquals(totalPages, page.getTotalPages()); LOGGER.info("Fetched page {} in {}ms...", pageNumber, sw.elapsed(TimeUnit.MILLISECONDS)); sw.reset(); } } @Test @Ignore public void everyPagePredicate() { int pageSize = 25; int totalPages = N / 25; Stopwatch sw = new Stopwatch(); for (int pageNumber = 0; pageNumber < N / pageSize; pageNumber++) { sw.start(); Page<PagingAndSortingEntity> page = repository.findAll(BooleanOperation.create(Ops.EQ, new ConstantImpl<String>("foo"), new ConstantImpl<String>("foo")), new PageableImpl(pageNumber, 25, 0, null)); Assert.assertEquals(pageNumber, page.getNumber()); Assert.assertEquals(pageSize, page.getSize()); Assert.assertEquals(totalPages, page.getTotalPages()); LOGGER.info("Fetched page {} in {}ms...", pageNumber, sw.elapsed(TimeUnit.MILLISECONDS)); sw.reset(); } } }