io.druid.sql.calcite.view.NoopViewManager Maven / Gradle / Ivy
/*
* Licensed to Metamarkets Group Inc. (Metamarkets) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Metamarkets 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 io.druid.sql.calcite.view;
import com.google.common.collect.ImmutableMap;
import io.druid.sql.calcite.planner.PlannerFactory;
import java.util.Map;
/**
* View manager that does not support views.
*/
public class NoopViewManager implements ViewManager
{
@Override
public void createView(final PlannerFactory plannerFactory, final String viewName, final String viewSql)
{
throw new UnsupportedOperationException("Noop view manager cannot do anything");
}
@Override
public void alterView(final PlannerFactory plannerFactory, final String viewName, final String viewSql)
{
throw new UnsupportedOperationException("Noop view manager cannot do anything");
}
@Override
public void dropView(final String viewName)
{
throw new UnsupportedOperationException("Noop view manager cannot do anything");
}
@Override
public Map getViews()
{
return ImmutableMap.of();
}
}