public virtual Expression VisitCamlComparison(CamlComparisonExpression node)
{
string[] parts = SPQueryNodeTypeMapping[node.SPNodeType].Split('|');
string comparison = parts[0];
CamlValueExpression valueExp;
CamlFieldExpression fieldExp;
if (node.Value is CamlValueExpression)
{
valueExp = (CamlValueExpression)node.Value;
fieldExp = (CamlFieldExpression)node.Field;
}
else
{
valueExp = (CamlValueExpression)node.Field;
fieldExp = (CamlFieldExpression)node.Value;
if (parts.Length > 1)
{
comparison = parts[1];
}
}
_whereXml.AppendFormat("<{0}>", comparison);
_whereXml.AppendFormat("<FieldRef Name='{0}'/>", fieldExp.Name);
_whereXml.AppendFormat("<Value Type='{0}'{1}>{2}</Value>", fieldExp.FieldType.ToString(),
node.IncludeTimeValue ? " IncludeTimeValue='TRUE'" : string.Empty,
valueExp.ValueString);
_whereXml.AppendFormat("</{0}>", comparison);
return(node);
}
protected override Expression VisitUnary(UnaryExpression node)
{
if (node.NodeType == ExpressionType.Not && node.Operand.Type.Equals(typeof(bool)))
{
_withinExpression = true;
CamlComparisonExpression exp = new CamlComparisonExpression(SPQueryNodeType.Equals, Visit(node.Operand), new CamlValueExpression(false, node.Type));
_withinExpression = false;
return(exp);
}
throw new NotSupportedException();
}
protected override Expression VisitMethodCall(MethodCallExpression node)
{
_withinExpression = true;
CamlComparisonExpression comparison = null;
switch (node.Method.Name)
{
case "Contains":
comparison = new CamlComparisonExpression(SPQueryNodeType.Contains, Visit(node.Object), Visit(node.Arguments[0]));
break;
case "Equals":
comparison = new CamlComparisonExpression(SPQueryNodeType.Equals, Visit(node.Object), Visit(node.Arguments[0]));
break;
case "QueryEq":
comparison = new CamlComparisonExpression(SPQueryNodeType.Equals, Visit(node.Arguments[0]), Visit(node.Arguments[1]), (bool)((ConstantExpression)node.Arguments[2]).Value);
break;
case "QueryLt":
comparison = new CamlComparisonExpression(SPQueryNodeType.LessThan, Visit(node.Arguments[0]), Visit(node.Arguments[1]), (bool)((ConstantExpression)node.Arguments[2]).Value);
break;
case "QueryGt":
comparison = new CamlComparisonExpression(SPQueryNodeType.GreaterThan, Visit(node.Arguments[0]), Visit(node.Arguments[1]), (bool)((ConstantExpression)node.Arguments[2]).Value);
break;
case "QueryLeq":
comparison = new CamlComparisonExpression(SPQueryNodeType.LessThanOrEqual, Visit(node.Arguments[0]), Visit(node.Arguments[1]), (bool)((ConstantExpression)node.Arguments[2]).Value);
break;
case "QueryGeq":
comparison = new CamlComparisonExpression(SPQueryNodeType.GreaterThanOrEqual, Visit(node.Arguments[0]), Visit(node.Arguments[1]), (bool)((ConstantExpression)node.Arguments[2]).Value);
break;
default:
throw new NotSupportedException();
}
_withinExpression = false;
return(comparison);
}
public virtual Expression VisitCamlComparison(CamlComparisonExpression node)
{
string[] parts = SPQueryNodeTypeMapping[node.SPNodeType].Split('|');
string comparison = parts[0];
CamlValueExpression valueExp;
CamlFieldExpression fieldExp;
if( node.Value is CamlValueExpression )
{
valueExp = (CamlValueExpression)node.Value;
fieldExp = (CamlFieldExpression)node.Field;
}
else
{
valueExp = (CamlValueExpression)node.Field;
fieldExp = (CamlFieldExpression)node.Value;
if( parts.Length > 1 )
comparison = parts[1];
}
_whereXml.AppendFormat("<{0}>", comparison);
_whereXml.AppendFormat("<FieldRef Name='{0}'/>", fieldExp.Name);
_whereXml.AppendFormat("<Value Type='{0}'{1}>{2}</Value>", fieldExp.FieldType.ToString(),
node.IncludeTimeValue ? " IncludeTimeValue='TRUE'" : string.Empty,
valueExp.ValueString);
_whereXml.AppendFormat("</{0}>", comparison);
return node;
}