How to use

alterKeyspace

method

in

com.datastax.driver.core.schemabuilder.SchemaBuilder

 @Test(groups = "unit", expectedExceptions = IllegalArgumentException.class)
 public void incorrect_replication_options() throws Exception {
  Map<String, Object> replicationOptions = new HashMap<String, Object>();
  replicationOptions.put("class", 5);

  // When
  alterKeyspace("test").with().replication(replicationOptions);
 }
}

@Test(groups = "unit")
public void should_alter_keyspace_with_options() throws Exception {
 Map<String, Object> replicationOptions = new HashMap<String, Object>();
 replicationOptions.put("class", "SimpleStrategy");
 replicationOptions.put("replication_factor", 1);
 // When
 SchemaStatement statement =
   alterKeyspace("test").with().durableWrites(true).replication(replicationOptions);
 // Then
 assertThat(statement.getQueryString())
   .isEqualTo(
     "\n\tALTER KEYSPACE test"
       + "\n\tWITH\n\t\t"
       + "REPLICATION = {'replication_factor': 1, 'class': 'SimpleStrategy'}\n\t\t"
       + "AND DURABLE_WRITES = true");
}

 @Test(groups = "unit", expectedExceptions = IllegalArgumentException.class)
 public void incorrect_replication_options() throws Exception {
  Map<String, Object> replicationOptions = new HashMap<String, Object>();
  replicationOptions.put("class", 5);

  // When
  alterKeyspace("test").with().replication(replicationOptions);
 }
}

@Test(groups = "unit")
public void should_alter_keyspace_with_options() throws Exception {
 Map<String, Object> replicationOptions = new HashMap<String, Object>();
 replicationOptions.put("class", "SimpleStrategy");
 replicationOptions.put("replication_factor", 1);
 // When
 SchemaStatement statement =
   alterKeyspace("test").with().durableWrites(true).replication(replicationOptions);
 // Then
 assertThat(statement.getQueryString())
   .isEqualTo(
     "\n\tALTER KEYSPACE test"
       + "\n\tWITH\n\t\t"
       + "REPLICATION = {'replication_factor': 1, 'class': 'SimpleStrategy'}\n\t\t"
       + "AND DURABLE_WRITES = true");
}