/*
* 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 org.apache.jena.tdb.solver.stats;
import java.util.HashMap ;
import java.util.Map ;
import org.apache.jena.graph.Node ;
/** Statistics collector, general purpose */
abstract class StatsCollectorBase<T>
{
private long count = 0 ;
private Map<T, Integer> predicates = new HashMap<>(10000) ;
private Map<T, Integer> types = new HashMap<>(10000) ;
private T typeTrigger ;
protected StatsCollectorBase(T typeTrigger)
{
this.typeTrigger = typeTrigger ;
}
public void record(T g, T s, T p, T o)
{
count++ ;
predicates.put(p, predicates.getOrDefault(p, 0) + 1);
if ( typeTrigger != null && typeTrigger.equals(p) )
types.put(o, types.getOrDefault(o, 0) + 1);
}
protected abstract Map<Node, Integer> convert(Map<T, Integer> map) ;
public StatsResults results()
{
return new StatsResults(convert(predicates), convert(types), count) ;
}
}