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Articles / Database Development / SQL Server / SQL Server 2008

DbExpressions - A Step Towards Independency

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2 Feb 2011CPOL9 min read 73.6K   317   18  
An abstract syntax tree implementation for SQL
namespace DbExpressions
{
    /// <summary>
    /// Represents a <see cref="DbExpression"/> that has a conditional operator.
    /// </summary>
    public class DbConditionalExpression : DbExpression
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="DbConditionalExpression"/> class.
        /// </summary>
        internal DbConditionalExpression(){}
        
        /// <summary>
        /// Gets the <see cref="DbExpression"/> that is executed if the <see cref="Condition"/> evaluates to <b>true</b>
        /// </summary>
        public DbExpression IfTrue { get; internal set; }

        /// <summary>
        /// Gets the <see cref="DbExpression"/> that is executed if the <see cref="Condition"/> evaluates to <b>false</b>
        /// </summary>
        public DbExpression IfFalse { get; internal set; }

        /// <summary>
        /// Gets the <see cref="DbExpression"/> that is evaluated 
        /// </summary>
        public DbExpression Condition { get; internal set; }

        /// <summary>
        /// Gets the <see cref="DbExpressionType"/> of the <see cref="DbExpression"/>.
        /// </summary>
        /// <value></value>
        public override DbExpressionType ExpressionType
        {
            get { return DbExpressionType.Conditional; }
        }
    }
}

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