| package org.apache.lucene.index; |
| |
| /* |
| * 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. |
| */ |
| |
| import org.apache.lucene.util.Bits; |
| import org.apache.lucene.util.Bits.MatchAllBits; |
| |
| /** |
| * Exposes multi-valued view over a single-valued instance. |
| * <p> |
| * This can be used if you want to have one multi-valued implementation |
| * that works for single or multi-valued types. |
| */ |
| final class SingletonSortedNumericDocValues extends SortedNumericDocValues { |
| private final NumericDocValues in; |
| private final Bits docsWithField; |
| private long value; |
| private int count; |
| |
| public SingletonSortedNumericDocValues(NumericDocValues in, Bits docsWithField) { |
| this.in = in; |
| this.docsWithField = docsWithField instanceof MatchAllBits ? null : docsWithField; |
| } |
| |
| /** Return the wrapped {@link NumericDocValues} */ |
| public NumericDocValues getNumericDocValues() { |
| return in; |
| } |
| |
| /** Return the wrapped {@link Bits} */ |
| public Bits getDocsWithField() { |
| return docsWithField; |
| } |
| |
| @Override |
| public void setDocument(int doc) { |
| value = in.get(doc); |
| if (docsWithField != null && value == 0 && docsWithField.get(doc) == false) { |
| count = 0; |
| } else { |
| count = 1; |
| } |
| } |
| |
| @Override |
| public long valueAt(int index) { |
| return value; |
| } |
| |
| @Override |
| public int count() { |
| return count; |
| } |
| } |