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RowT1-3.cs
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RowT1-3.cs
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#region License
// Copyright (c) Amos Voron. All rights reserved.
// Licensed under the Apache 2.0 License. See LICENSE in the project root for license information.
#endregion
using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace QueryTalk
{
/// <summary>
/// Represents a 3-column row object.
/// </summary>
/// <typeparam name="T1">The type of the column1.</typeparam>
/// <typeparam name="T2">The type of the column2.</typeparam>
/// <typeparam name="T3">The type of the column3.</typeparam>
public sealed class Row<T1, T2, T3> : IEquatable<Row<T1, T2, T3>>, ICloneable
{
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private T1 _column1;
/// <summary>
/// The first column.
/// </summary>
public T1 Column1
{
get
{
return _column1;
}
set
{
_column1 = value;
}
}
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private T2 _column2;
/// <summary>
/// The second column.
/// </summary>
public T2 Column2
{
get
{
return _column2;
}
set
{
_column2 = value;
}
}
[DebuggerBrowsable(DebuggerBrowsableState.Never)]
private T3 _column3;
/// <summary>
/// The third column.
/// </summary>
public T3 Column3
{
get
{
return _column3;
}
set
{
_column3 = value;
}
}
/// <summary>
/// Initializes a default 3-column row.
/// </summary>
public Row()
{ }
/// <summary>
/// Initializes a new 3-column row.
/// </summary>
/// <param name="column1">The value of the column1.</param>
/// <param name="column2">The value of the column2.</param>
/// <param name="column3">The value of the column3.</param>
public Row(T1 column1, T2 column2, T3 column3)
{
_column1 = column1;
_column2 = column2;
_column3 = column3;
}
#region IEquatable
/// <summary>
/// Determines whether the specified object is equal to this instance.
/// </summary>
/// <param name="obj">The object to compare with this instance.</param>
public override bool Equals(object obj)
{
if (obj == null)
{
return false;
}
Type objType = obj.GetType();
var properties = objType.GetProperties();
if (properties.Length == 3)
{
Type colType1 = properties[0].PropertyType.GetValueType();
Type colType2 = properties[1].PropertyType.GetValueType();
Type colType3 = properties[2].PropertyType.GetValueType();
return
Row.ColumnEquality<T1>(_column1, colType1, properties[0].GetValue(obj, null))
&& Row.ColumnEquality<T2>(_column2, colType2, properties[1].GetValue(obj, null))
&& Row.ColumnEquality<T3>(_column3, colType3, properties[2].GetValue(obj, null));
}
return false;
}
/// <summary>
/// Determines whether the specified Row object is equal to this instance.
/// </summary>
/// <param name="other">The Row object to compare with this instance.</param>
public bool Equals(Row<T1, T2, T3> other)
{
if (other == null)
{
return false;
}
return Row.ColumnEquality<T1>(_column1, other.Column1)
&& Row.ColumnEquality<T2>(_column2, other.Column2)
&& Row.ColumnEquality<T3>(_column3, other.Column3);
}
/// <summary>
/// Returns the hash code for this instance.
/// </summary>
public override int GetHashCode()
{
return
Value.CombineHashCodes(
Value.CombineHashCodes(
Value.GetCrossTypeHashCode(typeof(T1), Row.GetHashCode(_column1)),
Value.GetCrossTypeHashCode(typeof(T2), Row.GetHashCode(_column2))),
Value.GetCrossTypeHashCode(typeof(T3), Row.GetHashCode(_column3)));
}
#endregion
#region ICloneable
/// <summary>
/// Performs the deep cloning of the current Row object.
/// </summary>
public Row<T1, T2, T3> Clone()
{
return new Row<T1, T2, T3>(_column1, _column2, _column3);
}
object ICloneable.Clone()
{
return Clone();
}
/// <summary>
/// Performs the shallow cloning of the current Row object with default values.
/// </summary>
public Row<T1, T2, T3> New()
{
return new Row<T1, T2, T3>();
}
#endregion
#region AddRow
/// <summary>
/// Creates a generic ICollection instance and adds this row and a new 3-column row.
/// </summary>
/// <param name="column1">The value of the column1.</param>
/// <param name="column2">The value of the column2.</param>
/// <param name="column3">The value of the column3.</param>
public ICollection<Row<T1, T2, T3>> AddRow(T1 column1, T2 column2, T3 column3)
{
return new List<Row<T1, T2, T3>>(new Row<T1, T2, T3>[] { this,
new Row<T1, T2, T3>(column1, column2, column3) });
}
#endregion
/// <summary>
/// Returns a string that represents the value of this Row instance.
/// </summary>
public override string ToString()
{
return String.Format("({0}), ({1}), ({2})",
_column1 != null ? _column1.ToString() : "null",
_column2 != null ? _column2.ToString() : "null",
_column3 != null ?_column3.ToString() : "null");
}
}
}