/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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 net.hydromatic.optiq.model;
import com.google.common.collect.Lists;
import java.util.List;
/**
* Materialized view within a {@link net.hydromatic.optiq.model.JsonLattice}.
*
* <p>A tile is defined in terms of its dimensionality (the grouping columns,
* drawn from the lattice) and measures (aggregate functions applied to
* lattice columns).
*
* @see JsonRoot Description of schema elements
*/
public class JsonTile {
/** List of grouping columns that define this tile.
*
* <p>Elements are either strings (column names unique within the lattice)
* or string lists (pairs of table alias and column name). */
public final List dimensions = Lists.newArrayList();
/** List of measures in this tile.
*
* <p>If not specified, uses {@link JsonLattice#defaultMeasures}.
*/
public List<JsonMeasure> measures;
public void accept(ModelHandler handler) {
handler.visit(this);
}
}
// End JsonTile.java