/*
* 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.tests.tpch;
import com.google.common.collect.ImmutableSetMultimap;
import com.google.common.collect.SetMultimap;
import java.util.Set;
import static java.util.Objects.requireNonNull;
public class TpchIndexSpec
{
public static final TpchIndexSpec NO_INDEXES = new TpchIndexSpec(ImmutableSetMultimap.of());
private final SetMultimap<TpchScaledTable, Set<String>> spec;
private TpchIndexSpec(SetMultimap<TpchScaledTable, Set<String>> spec)
{
this.spec = ImmutableSetMultimap.copyOf(requireNonNull(spec, "spec is null"));
}
public Set<TpchScaledTable> listIndexedTables()
{
return spec.keySet();
}
public Iterable<Set<String>> getColumnIndexes(TpchScaledTable table)
{
return spec.get(table);
}
public static class Builder
{
private final ImmutableSetMultimap.Builder<TpchScaledTable, Set<String>> builder = ImmutableSetMultimap.builder();
public Builder addIndex(String tableName, double scaleFactor, Set<String> columnNames)
{
builder.put(new TpchScaledTable(tableName, scaleFactor), columnNames);
return this;
}
public TpchIndexSpec build()
{
return new TpchIndexSpec(builder.build());
}
}
}