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adding Cassandra Templates and CQL Queries tutorial code samples

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sameira 2015-12-09 16:11:46 +05:30
parent f97e911dcb
commit fe8262f2f5
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115
spring-data-cassandra/src/test/java/org/baeldung/spring/data/cassandra/repository/CQLQueriesIntegrationTest.java Normal file
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package org.baeldung.spring.data.cassandra.repository;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Session;
import com.datastax.driver.core.querybuilder.Insert;
import com.datastax.driver.core.querybuilder.QueryBuilder;
import com.datastax.driver.core.querybuilder.Select;
import com.datastax.driver.core.utils.UUIDs;
import com.google.common.collect.ImmutableSet;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.thrift.transport.TTransportException;
import org.baeldung.spring.data.cassandra.config.CassandraConfig;
import org.baeldung.spring.data.cassandra.model.Book;
import org.cassandraunit.utils.EmbeddedCassandraServerHelper;
import org.junit.*;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cassandra.core.cql.CqlIdentifier;
import org.springframework.data.cassandra.core.CassandraAdminOperations;
import org.springframework.data.cassandra.core.CassandraOperations;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.UUID;
import static junit.framework.TestCase.assertEquals;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = CassandraConfig.class)
public class CQLQueriesIntegrationTest {
private static final Log LOGGER = LogFactory.getLog(CQLQueriesIntegrationTest.class);
public static final String KEYSPACE_CREATION_QUERY = "CREATE KEYSPACE IF NOT EXISTS testKeySpace " + "WITH replication = { 'class': 'SimpleStrategy', 'replication_factor': '3' };";
public static final String KEYSPACE_ACTIVATE_QUERY = "USE testKeySpace;";
public static final String DATA_TABLE_NAME = "book";
@Autowired
private CassandraAdminOperations adminTemplate;
@Autowired
private CassandraOperations cassandraTemplate;
@BeforeClass
public static void startCassandraEmbedded() throws InterruptedException, TTransportException, ConfigurationException, IOException {
EmbeddedCassandraServerHelper.startEmbeddedCassandra();
Cluster cluster = Cluster.builder().addContactPoints("127.0.0.1").withPort(9142).build();
LOGGER.info("Server Started at 127.0.0.1:9142... ");
Session session = cluster.connect();
session.execute(KEYSPACE_CREATION_QUERY);
session.execute(KEYSPACE_ACTIVATE_QUERY);
Thread.sleep(1000);
LOGGER.info("KeySpace created and activated.");
}
@Before
public void createTable() throws InterruptedException, TTransportException, ConfigurationException, IOException {
adminTemplate.createTable(true, CqlIdentifier.cqlId(DATA_TABLE_NAME), Book.class, new HashMap<String, Object>());
}
@Test
public void whenSavingBook_thenAvailableOnRetrieval_usingQueryBuilder() {
UUID uuid = UUIDs.timeBased();
Insert insert = QueryBuilder.insertInto(DATA_TABLE_NAME).value("isbn", uuid).value("title", "Head First Java").value("publisher", "OReilly Media").value("tags", ImmutableSet.of("Software"));
cassandraTemplate.execute(insert);
Select select = QueryBuilder.select().from("book").limit(10);
Book retrievedBook = cassandraTemplate.selectOne(select, Book.class);
assertEquals(uuid, retrievedBook.getId());
}
@Test
public void whenSavingBook_thenAvailableOnRetrieval_usingCQLStatements() {
UUID uuid = UUIDs.timeBased();
String insertCql = "insert into book (isbn, title, publisher, tags) values " + "(" + uuid + ", 'Head First Java', 'OReilly Media', {'Software'})";
cassandraTemplate.execute(insertCql);
Select select = QueryBuilder.select().from("book").limit(10);
Book retrievedBook = cassandraTemplate.selectOne(select, Book.class);
assertEquals(uuid, retrievedBook.getId());
}
@Test
public void whenSavingBook_thenAvailableOnRetrieval_usingPreparedStatements() {
UUID uuid = UUIDs.timeBased();
String insertPreparedCql = "insert into book (isbn, title, publisher, tags) values (?, ?, ?, ?)";
List<Object> bookList = new ArrayList<>();
List<List<?>> bookListOfList = new ArrayList<>();
bookList.add(uuid);
bookList.add("Head First Java");
bookList.add("OReilly Media");
bookList.add(ImmutableSet.of("Software"));
bookList.add(bookList);
cassandraTemplate.ingest(insertPreparedCql, bookListOfList);
Select select = QueryBuilder.select().from("book").limit(10);
Book retrievedBook = cassandraTemplate.selectOne(select, Book.class);
assertEquals(uuid, retrievedBook.getId());
}
@After
public void dropTable() {
adminTemplate.dropTable(CqlIdentifier.cqlId(DATA_TABLE_NAME));
}
@AfterClass
public static void stopCassandraEmbedded() {
EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();
}
}

138
spring-data-cassandra/src/test/java/org/baeldung/spring/data/cassandra/repository/CassandraTemplateIntegrationTest.java Normal file
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package org.baeldung.spring.data.cassandra.repository;
import static junit.framework.TestCase.assertNull;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.thrift.transport.TTransportException;
import org.baeldung.spring.data.cassandra.config.CassandraConfig;
import org.baeldung.spring.data.cassandra.model.Book;
import org.cassandraunit.utils.EmbeddedCassandraServerHelper;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cassandra.core.cql.CqlIdentifier;
import org.springframework.data.cassandra.core.CassandraAdminOperations;
import org.springframework.data.cassandra.core.CassandraOperations;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Session;
import com.datastax.driver.core.querybuilder.QueryBuilder;
import com.datastax.driver.core.querybuilder.Select;
import com.datastax.driver.core.utils.UUIDs;
import com.google.common.collect.ImmutableSet;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = CassandraConfig.class)
public class CassandraTemplateIntegrationTest {
private static final Log LOGGER = LogFactory.getLog(CassandraTemplateIntegrationTest.class);
public static final String KEYSPACE_CREATION_QUERY = "CREATE KEYSPACE IF NOT EXISTS testKeySpace " + "WITH replication = { 'class': 'SimpleStrategy', 'replication_factor': '3' };";
public static final String KEYSPACE_ACTIVATE_QUERY = "USE testKeySpace;";
public static final String DATA_TABLE_NAME = "book";
@Autowired
private CassandraAdminOperations adminTemplate;
@Autowired
private CassandraOperations cassandraTemplate;
@BeforeClass
public static void startCassandraEmbedded() throws InterruptedException, TTransportException, ConfigurationException, IOException {
EmbeddedCassandraServerHelper.startEmbeddedCassandra();
Cluster cluster = Cluster.builder().addContactPoints("127.0.0.1").withPort(9142).build();
LOGGER.info("Server Started at 127.0.0.1:9142... ");
Session session = cluster.connect();
session.execute(KEYSPACE_CREATION_QUERY);
session.execute(KEYSPACE_ACTIVATE_QUERY);
Thread.sleep(5000);
LOGGER.info("KeySpace created and activated.");
}
@Before
public void createTable() throws InterruptedException, TTransportException, ConfigurationException, IOException {
adminTemplate.createTable(true, CqlIdentifier.cqlId(DATA_TABLE_NAME), Book.class, new HashMap<String, Object>());
}
@Test
public void whenSavingBook_thenAvailableOnRetrieval() {
Book javaBook = new Book(UUIDs.timeBased(), "Head First Java", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
cassandraTemplate.insert(javaBook);
Select select = QueryBuilder.select().from("book").where(QueryBuilder.eq("title", "Head First Java")).and(QueryBuilder.eq("publisher", "O'Reilly Media")).limit(10);
Book retrievedBook = cassandraTemplate.selectOne(select, Book.class);
assertEquals(javaBook.getId(), retrievedBook.getId());
}
@Test
public void whenSavingBooks_thenAllAvailableOnRetrieval() {
Book javaBook = new Book(UUIDs.timeBased(), "Head First Java", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
Book dPatternBook = new Book(UUIDs.timeBased(), "Head Design Patterns", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
cassandraTemplate.insert(javaBook);
cassandraTemplate.insert(dPatternBook);
Select select = QueryBuilder.select().from("book").limit(10);
List<Book> retrievedBooks = cassandraTemplate.select(select, Book.class);
assertThat(retrievedBooks.size(), is(2));
assertEquals(javaBook.getId(), retrievedBooks.get(0).getId());
assertEquals(dPatternBook.getId(), retrievedBooks.get(1).getId());
}
@Test
public void whenUpdatingBook_thenShouldUpdatedOnRetrieval() {
Book javaBook = new Book(UUIDs.timeBased(), "Head First Java", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
cassandraTemplate.insert(javaBook);
Select select = QueryBuilder.select().from("book").limit(10);
Book retrievedBook = cassandraTemplate.selectOne(select, Book.class);
retrievedBook.setTags(ImmutableSet.of("Computer", "Software", "Java"));
cassandraTemplate.update(retrievedBook);
Book retrievedUpdatedBook = cassandraTemplate.selectOne(select, Book.class);
assertEquals(retrievedBook.getTags(), retrievedUpdatedBook.getTags());
}
@Test
public void whenDeletingExistingBooks_thenNotAvailableOnRetrieval() {
Book javaBook = new Book(UUIDs.timeBased(), "Head First Java", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
Book insertedBook = cassandraTemplate.insert(javaBook);
cassandraTemplate.deleteAll(Book.class);
Select select = QueryBuilder.select().from("book").limit(10);
Book retrievedUpdatedBook = cassandraTemplate.selectOne(select, Book.class);
assertNull(retrievedUpdatedBook);
}
@Test
public void whenAddingBooks_thenCountShouldBeCorrectOnRetrieval() {
Book javaBook = new Book(UUIDs.timeBased(), "Head First Java", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
Book dPatternBook = new Book(UUIDs.timeBased(), "Head Design Patterns", "O'Reilly Media", ImmutableSet.of("Computer", "Software"));
cassandraTemplate.insert(javaBook);
cassandraTemplate.insert(dPatternBook);
long bookCount = cassandraTemplate.count(Book.class);
assertEquals(2, bookCount);
}
@After
public void dropTable() {
adminTemplate.dropTable(CqlIdentifier.cqlId(DATA_TABLE_NAME));
}
@AfterClass
public static void stopCassandraEmbedded() {
EmbeddedCassandraServerHelper.cleanEmbeddedCassandra();
}
}