| using System; |
| using System.Collections.Generic; |
| |
| namespace Lucene.Net.Facet.Range |
| { |
| /* |
| * 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. |
| */ |
| |
| using Filter = Lucene.Net.Search.Filter; |
| |
| /// <summary> |
| /// Base class for range faceting. |
| /// |
| /// @lucene.experimental |
| /// </summary> |
| public abstract class RangeFacetCounts : Facets |
| { |
| /// <summary> |
| /// Ranges passed to constructor. </summary> |
| protected readonly Range[] m_ranges; |
| |
| /// <summary> |
| /// Counts, initialized in by subclass. </summary> |
| protected readonly int[] m_counts; |
| |
| /// <summary> |
| /// Optional: if specified, we first test this Filter to |
| /// see whether the document should be checked for |
| /// matching ranges. If this is null, all documents are |
| /// checked. |
| /// </summary> |
| protected readonly Filter m_fastMatchFilter; |
| |
| /// <summary> |
| /// Our field name. </summary> |
| protected readonly string m_field; |
| |
| /// <summary> |
| /// Total number of hits. </summary> |
| protected int m_totCount; |
| |
| /// <summary> |
| /// Create <see cref="RangeFacetCounts"/> </summary> |
| protected RangeFacetCounts(string field, Range[] ranges, Filter fastMatchFilter) |
| { |
| this.m_field = field; |
| this.m_ranges = ranges; |
| this.m_fastMatchFilter = fastMatchFilter; |
| m_counts = new int[ranges.Length]; |
| } |
| |
| public override FacetResult GetTopChildren(int topN, string dim, params string[] path) |
| { |
| if (dim.Equals(m_field, StringComparison.Ordinal) == false) |
| { |
| throw new ArgumentException("invalid dim \"" + dim + "\"; should be \"" + m_field + "\""); |
| } |
| if (path.Length != 0) |
| { |
| throw new ArgumentException("path.length should be 0"); |
| } |
| LabelAndValue[] labelValues = new LabelAndValue[m_counts.Length]; |
| for (int i = 0; i < m_counts.Length; i++) |
| { |
| labelValues[i] = new LabelAndValue(m_ranges[i].Label, m_counts[i]); |
| } |
| return new FacetResult(dim, path, m_totCount, labelValues, labelValues.Length); |
| } |
| |
| public override float GetSpecificValue(string dim, params string[] path) |
| { |
| // TODO: should we impl this? |
| throw new NotSupportedException(); |
| } |
| |
| public override IList<FacetResult> GetAllDims(int topN) |
| { |
| return new List<FacetResult> { GetTopChildren(topN, null) }; |
| } |
| } |
| } |