protected override Expression VisitBinary(BinaryExpression node)
{
using var mc = log?.Enter(LogLevel.LinqExpression, node);
if (ExpressionTreeHelpers.SupportedComparisons.ContainsKey(node.NodeType))
{
foreach (var prop in TypeProperties)
{
if (ExpressionTreeHelpers.IsMatchingMemberValueExpression(node, typeof(T), prop.Name))
{
object testValue = TranslateValue(prop, ExpressionTreeHelpers.GetValueFromExpression(node, typeof(T), prop.Name));
AddClause($"[{TranslateFieldName(prop)}] {ExpressionTreeHelpers.SupportedComparisons[node.NodeType]} '{testValue}' ");
return(node);
}
}
if (node.Left.NodeType == ExpressionType.Call)
{
object testValue = TranslateValue(null, ExpressionTreeHelpers.GetValueFromExpression(node.Right));
futureComparisons.Push($"{ExpressionTreeHelpers.SupportedComparisons[node.NodeType]} '{testValue}'");
}
return(base.VisitBinary(node));
}
else if (node.NodeType == ExpressionType.OrElse || node.NodeType == ExpressionType.Or)
{
log?.WriteLine(LogLevel.LinqQuery, $"\t[{node.NodeType}]: {node.Left.NodeType} vs. {node.Right.NodeType}");
AddClause("(");
base.Visit(node.Left);
AddClause(" OR ");
base.Visit(node.Right);
AddClause(")");
return(node);
}
else if (node.NodeType == ExpressionType.AndAlso || node.NodeType == ExpressionType.And)
{
log?.WriteLine(LogLevel.LinqQuery, $"\t[{node.NodeType}]: {node.Left.NodeType} vs. {node.Right.NodeType}");
AddClause("(");
base.Visit(node.Left);
AddClause(" AND ");
base.Visit(node.Right);
AddClause(")");
return(node);
}
else
{
log?.WriteLine(LogLevel.LinqQuery, $"ERROR: unsupported comparison: {node.NodeType}");
return(base.VisitBinary(node));
}
}
