mirror of https://bitbucket.org/anguist/ntpa
111 lines
4.0 KiB
C#
111 lines
4.0 KiB
C#
//
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// Copyright (c) 2013-2017 Carsten Sonne Larsen <cs@innolan.net>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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namespace Ntp.Analyzer.Objects
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{
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public abstract class PersistentObject
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="PersistentObject" /> class.
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/// </summary>
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/// <param name="id">Identifier.</param>
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/// <remarks>
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/// Constructor used when creating instances from data storage.
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/// </remarks>
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protected PersistentObject(int id)
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{
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Id = id;
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NewObject = false;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="PersistentObject" /> class.
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/// </summary>
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protected PersistentObject()
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{
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Id = -1;
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NewObject = true;
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}
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/// <summary>
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/// Gets the identifier.
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/// </summary>
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/// <remarks>
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/// The identifier is equal to the primary key in database terminology.
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/// </remarks>
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/// <value>The identifier.</value>
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public int Id { get; private set; }
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/// <summary>
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/// Gets a value indicating whether this <see cref="PersistentObject" /> is a new object
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/// which does not yet exists in the peristing storage (database etc).
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/// </summary>
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/// <value>
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/// <c>true</c> if new object; otherwise, <c>false</c>.
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/// </value>
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public bool NewObject { get; protected set; }
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public override bool Equals(object obj)
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{
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if (obj == null)
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return false;
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if (obj.GetType() != GetType())
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return false;
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return NewObject
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// ReSharper disable once BaseObjectEqualsIsObjectEquals
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? base.Equals(obj)
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: Id == ((PersistentObject) obj).Id;
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}
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public override int GetHashCode()
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{
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// ReSharper disable once NonReadonlyMemberInGetHashCode
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return NewObject
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// ReSharper disable once BaseObjectGetHashCodeCallInGetHashCode
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? base.GetHashCode()
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// ReSharper disable once NonReadonlyMemberInGetHashCode
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: (int) (Id*2654435761%2 ^ 32);
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}
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/// <summary>
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/// Sets the identifier after the object have been stored in persistent storage.
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/// </summary>
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/// <param name="id">Identifier.</param>
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public void SetId(int id)
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{
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Id = id;
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NewObject = false;
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}
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/// <summary>
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/// Returns a <see cref="string" /> that represents the current <see cref="PersistentObject" />.
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/// </summary>
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/// <returns>
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/// A <see cref="string" /> that represents the current <see cref="PersistentObject" />.
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/// </returns>
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public override string ToString()
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{
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return $"[PersistentObject: Id={Id}, NewObject={NewObject}]";
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}
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}
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} |