protected override Expression VisitConstant(ConstantExpression expression)
{
var value = expression.Value;
if (value.DataType is QueryType)
hasSubQuery = true;
return base.VisitConstant(expression);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
if (expression.Value.DataType is QueryType) {
TableNames = ((IQueryPlanNode)expression.Value.Value).DiscoverTableNames(TableNames);
}
return expression;
}
protected override Expression VisitConstant(ConstantExpression expression)
{
var value = expression.Value;
if (value.DataType is ArrayType) {
var exps = (IEnumerable<Expression>) value.Value;
VisitExpressionList(new ReadOnlyCollection<Expression>(exps.ToList()));
}
return base.VisitConstant(expression);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
var value = expression.Value;
if (value.DataType is QueryType) {
var planNode = (IQueryPlanNode) value.Value;
variables = planNode.DiscoverCorrelatedVariables(queryLevel + 1, variables);
}
return expression;
}
protected override Expression VisitConstant(ConstantExpression expression)
{
var value = expression.Value;
if (!value.IsNull) {
if (value.DataType is QueryType) {
isConstant = false;
} else if (value.DataType is ArrayType) {
var array = (IEnumerable<Expression>) value.Value;
if (array.Any(exp => !exp.IsConstant()))
isConstant = false;
}
}
return base.VisitConstant(expression);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
return DoPrepare(expression);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
returnType = expression.Value.DataType;
return expression;
}
protected virtual Expression VisitConstant(ConstantExpression expression)
{
return expression;
}