/*
* 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 com.facebook.presto.execution;
import com.facebook.presto.spi.ConnectorColumnHandle;
import com.facebook.presto.spi.ConnectorPageSource;
import com.facebook.presto.spi.ConnectorPageSourceProvider;
import com.facebook.presto.spi.ConnectorSplit;
import com.facebook.presto.spi.FixedPageSource;
import com.facebook.presto.spi.Page;
import com.google.common.collect.ImmutableList;
import java.util.List;
import static com.facebook.presto.util.Types.checkType;
import static com.google.common.base.Preconditions.checkNotNull;
public class TestingPageSourceProvider
implements ConnectorPageSourceProvider
{
@Override
public ConnectorPageSource createPageSource(ConnectorSplit split, List<ConnectorColumnHandle> columns)
{
checkNotNull(columns, "columns is null");
checkType(split, TestingSplit.class, "split");
// TODO: check for !columns.isEmpty() -- currently, it breaks TestSqlTaskManager
// and fixing it requires allowing TableScan nodes with no assignments
return new FixedPageSource(ImmutableList.of(new Page(1)));
}
}