com.hazelcast.jet.sql.impl.opt.cost.CostFactory Maven / Gradle / Ivy
/*
* Copyright 2021 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.opt.cost;
import com.hazelcast.org.apache.calcite.plan.RelOptCostFactory;
/**
* Cost factory that is injected into Apache Calcite.
*/
public final class CostFactory implements RelOptCostFactory {
/** Singleton instance. */
public static final CostFactory INSTANCE = new CostFactory();
private CostFactory() {
// No-op.
}
@Override
public Cost makeCost(double rowCount, double cpu, double io) {
return new Cost(rowCount, cpu, io);
}
@Override
public Cost makeHugeCost() {
return Cost.HUGE;
}
@Override
public Cost makeInfiniteCost() {
return Cost.INFINITY;
}
@Override
public Cost makeTinyCost() {
return Cost.TINY;
}
@Override
public Cost makeZeroCost() {
return Cost.ZERO;
}
@Override
public String toString() {
return getClass().getSimpleName() + "{}";
}
}
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