Java tutorial
/* * 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.index; import java.io.IOException; /** * A list of per-document numeric values, sorted * according to {@link Long#compare(long, long)}. */ public abstract class SortedNumericDocValues extends DocValuesIterator { /** Sole constructor. (For invocation by subclass * constructors, typically implicit.) */ protected SortedNumericDocValues() { } /** * Iterates to the next value in the current document. Do not call this more than {@link #docValueCount} times * for the document. */ public abstract long nextValue() throws IOException; /** * Retrieves the number of values for the current document. This must always * be greater than zero. * It is illegal to call this method after {@link #advanceExact(int)} * returned {@code false}. */ public abstract int docValueCount(); }