| using Lucene.Net.Util; |
| using System; |
| using Attribute = Lucene.Net.Util.Attribute; |
| |
| namespace Lucene.Net.QueryParsers.Flexible.Spans |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// This attribute is used by the <see cref="UniqueFieldQueryNodeProcessor"/> |
| /// processor. It holds a value that defines which is the unique field name that |
| /// should be set in every <see cref="Core.Nodes.IFieldableNode"/>. |
| /// </summary> |
| /// <seealso cref="UniqueFieldQueryNodeProcessor"/> |
| public class UniqueFieldAttribute : Attribute, IUniqueFieldAttribute |
| { |
| private string uniqueField; |
| |
| public UniqueFieldAttribute() |
| { |
| Clear(); |
| } |
| |
| public override void Clear() |
| { |
| this.uniqueField = ""; |
| } |
| |
| public virtual string UniqueField |
| { |
| get => this.uniqueField; |
| set => this.uniqueField = value; |
| } |
| |
| public override void CopyTo(IAttribute target) |
| { |
| |
| if (!(target is UniqueFieldAttribute)) |
| { |
| throw new ArgumentException( |
| "cannot copy the values from attribute UniqueFieldAttribute to an instance of " |
| + target.GetType().Name); |
| } |
| |
| UniqueFieldAttribute uniqueFieldAttr = (UniqueFieldAttribute)target; |
| uniqueFieldAttr.uniqueField = uniqueField.toString(); |
| } |
| |
| public override bool Equals(object other) |
| { |
| if (other is UniqueFieldAttribute) |
| { |
| |
| return ((UniqueFieldAttribute)other).uniqueField |
| .Equals(this.uniqueField, System.StringComparison.Ordinal); |
| } |
| |
| return false; |
| } |
| |
| public override int GetHashCode() |
| { |
| return this.uniqueField.GetHashCode(); |
| } |
| |
| public override string ToString() |
| { |
| return "<uniqueField uniqueField='" + this.uniqueField + "'/>"; |
| } |
| } |
| } |