public override System.Linq.Expressions.Expression ToLinqExpression(System.Linq.IQueryable queryable, ParameterExpression parameterExpression, string propertyName)
{
if (queryable == null)
{
throw new ArgumentNullException("queryable");
}
if (parameterExpression == null)
{
throw new ArgumentNullException("parameterExpression");
}
if (String.IsNullOrEmpty(propertyName))
{
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
throw new ArgumentException("PropertyName must not be empty.", "propertyName");
}
System.Linq.Expressions.Expression firstFilterLINQExpression =
(m_firstFilterCriterion == null) ? null : m_firstFilterCriterion.ToLinqExpression(queryable, parameterExpression, propertyName);
System.Linq.Expressions.Expression secondFilterLINQExpression =
(m_secondFilterCriterion == null) ? null : m_secondFilterCriterion.ToLinqExpression(queryable, parameterExpression, propertyName);
if ((firstFilterLINQExpression != null) && (secondFilterLINQExpression != null))
{
return(System.Linq.Expressions.Expression.Or(firstFilterLINQExpression, secondFilterLINQExpression));
}
if (firstFilterLINQExpression != null)
{
return(firstFilterLINQExpression);
}
// Will return null if both criterion or resulting LINQ expressions are null;
return(secondFilterLINQExpression);
}
public override System.Linq.Expressions.Expression ToLinqExpression(System.Linq.IQueryable queryable, ParameterExpression parameterExpression, string propertyName)
{
if (queryable == null)
{
throw new ArgumentNullException("queryable");
}
if (parameterExpression == null)
{
throw new ArgumentNullException("parameterExpression");
}
if (String.IsNullOrEmpty(propertyName))
{
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
throw new ArgumentException("PropertyName must not be empty.", "propertyName");
}
if (m_filterCriterion == null)
{
return(null);
}
Expression expressionToReverse = m_filterCriterion.ToLinqExpression(queryable, parameterExpression, propertyName);
if (expressionToReverse == null)
{
return(null);
}
return(Expression.Not(expressionToReverse));
}
