Light ORM Library for .NET

using System;
using System.Data;

namespace Light
{
	/// <summary>
	/// Represents a database command parameter.
	/// </summary>
	public class Parameter
	{
		private DbType dbType = DbType.Object;
		private ParameterDirection direction = ParameterDirection.Input;
		private string parameterName = "";
		private int size = 0;
		private byte precision = 0;
		private byte scale = 0;
		private object value = null;
		private string columnName = "";
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		public Parameter()
		{}
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		/// <param name="dbtype">database data type</param>
		/// <param name="value">value</param>
		public Parameter(DbType dbtype, object value)
			: this(dbtype, 0, value)
		{}
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		/// <param name="dbtype">database data type</param>
		/// <param name="size">database data type size</param>
		/// <param name="value">value</param>
		public Parameter(DbType dbtype, int size, object value)
			: this("", dbtype, size, value)
		{}
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		/// <param name="name">parameter name</param>
		/// <param name="dbtype">database data type</param>
		public Parameter(string name, DbType dbtype)
			: this(name, dbtype, 0, null)
		{}
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		/// <param name="name">parameter name</param>
		/// <param name="dbtype">database data type</param>
		/// <param name="value">value</param>
		public Parameter(string name, DbType dbtype, object value)
			: this(name, dbtype, 0, value)
		{}
		
		/// <summary>
		/// Creates a new instance.
		/// </summary>
		/// <param name="name">parameter name</param>
		/// <param name="dbtype">database data type</param>
		/// <param name="size">database data type size</param>
		/// <param name="value">value</param>
		public Parameter(string name, DbType dbtype, int size, object value)
		{
			parameterName = name;
			dbType = dbtype;
			this.size = size;
			this.value = value;
		}
		
		/// <summary>
		/// Gets or sets data type.
		/// </summary>
		public DbType DBType
		{
			get { return dbType; }
			set { dbType = value; }
		}
		
		/// <summary>
		/// Gets or sets parameter direction.
		/// </summary>
		public ParameterDirection Direction
		{
			get { return direction; }
			set { direction = value; }
		}
		
		/// <summary>
		/// Gets or sets parameter name.
		/// </summary>
		public string ParameterName
		{
			get { return parameterName; }
			set { parameterName = value; }
		}
		
		/// <summary>
		/// Gets or sets parameter data size.
		/// </summary>
		public int Size
		{
			get { return size; }
			set { size = value; }
		}
		
		/// <summary>
		/// Gets or sets data precision.
		/// </summary>
		public byte Precision
		{
			get { return precision; }
			set { precision = value; }
		}
		
		/// <summary>
		/// Gets or sets data scale.
		/// </summary>
		public byte Scale
		{
			get { return scale; }
			set { scale = value; }
		}
		
		/// <summary>
		/// Gets or sets parameter value.
		/// </summary>
		public object Value
		{
			get { return value; }
			set { this.value = value; }
		}
		
		/// <summary>
		/// Gets or sets the column name from which this
		/// parameter was created.
		/// </summary>
		internal string ColumnName
		{
			get { return columnName; }
			set { columnName = value; }
		}
		
		#region - Chaining methods -
		/// <summary>
		/// Sets the name of this parameter.
		/// </summary>
		/// <param name="name">name to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetName(string name)
		{
			parameterName = name;
			return this;
		}
		
		/// <summary>
		/// Sets the db type of this parameter.
		/// </summary>
		/// <param name="type">db type to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetDBType(DbType type)
		{
			dbType = type;
			return this;
		}
		
		/// <summary>
		/// Sets the size of this parameter.
		/// </summary>
		/// <param name="size">size to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetSize(int size)
		{
			this.size = size;
			return this;
		}
		
		/// <summary>
		/// Sets the direction of this parameter.
		/// </summary>
		/// <param name="dir">direction to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetDirection(ParameterDirection dir)
		{
			direction = dir;
			return this;
		}
		
		/// <summary>
		/// Sets the precision of this parameter.
		/// </summary>
		/// <param name="precision">precision to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetPrecision(byte precision)
		{
			this.precision = precision;
			return this;
		}
		
		/// <summary>
		/// Sets the scale of this parameter.
		/// </summary>
		/// <param name="scale">scale to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetScale(byte scale)
		{
			this.scale = scale;
			return this;
		}
		
		/// <summary>
		/// Sets the value of this parameter.
		/// </summary>
		/// <param name="value">value to set</param>
		/// <returns>this parameter</returns>
		public Parameter SetValue(object value)
		{
			this.value = value;
			return this;
		}
		
		/// <summary>
		/// Sets the name of the columns from which this parameter was generated
		/// by Light framework.
		/// </summary>
		/// <param name="name">column name</param>
		/// <returns>this parameter</returns>
		internal Parameter SetColumnName(string name)
		{
			this.columnName = name;
			return this;
		}
		#endregion
	}
}