/*
* 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.lucene.spatial.util;
import org.locationtech.spatial4j.shape.Shape;
import java.util.ArrayList;
import java.util.List;
/**
* Bounded Cache of Shapes associated with docIds. Note, multiple Shapes can be
* associated with a given docId.
* <p>
* WARNING: This class holds the data in an extremely inefficient manner as all Points are in memory as objects and they
* are stored in many ArrayLists (one per document). So it works but doesn't scale. It will be replaced in the future.
*
* @lucene.internal
*/
public class ShapeFieldCache<T extends Shape> {
private final List<T>[] cache;
public final int defaultLength;
@SuppressWarnings({"unchecked", "rawtypes"})
public ShapeFieldCache( int length, int defaultLength ) {
cache = new List[length];
this.defaultLength= defaultLength;
}
public void add( int docid, T s ) {
List<T> list = cache[docid];
if( list == null ) {
list = cache[docid] = new ArrayList<>(defaultLength);
}
list.add( s );
}
public List<T> getShapes( int docid ) {
return cache[docid];
}
}