internal virtual SqlExpression VisitClientArray(SqlClientArray scar) {
for (int i = 0, n = scar.Expressions.Count; i < n; i++) {
scar.Expressions[i] = this.VisitExpression(scar.Expressions[i]);
}
return scar;
}
private SqlNode VisitInvocation(InvocationExpression invoke)
{
LambdaExpression lambda =
(invoke.Expression.NodeType == ExpressionType.Quote)
? (LambdaExpression)((UnaryExpression)invoke.Expression).Operand
: (invoke.Expression as LambdaExpression);
if(lambda != null)
{
// just map arg values into lambda's parameters and evaluate lambda's body
for(int i = 0, n = invoke.Arguments.Count; i < n; i++)
{
_parameterExpressionToExpression[lambda.Parameters[i]] = invoke.Arguments[i];
}
return this.VisitInner(lambda.Body);
}
else
{
// check for compiled query invocation
SqlExpression expr = this.VisitExpression(invoke.Expression);
if(expr.NodeType == SqlNodeType.Value)
{
SqlValue value = (SqlValue)expr;
Delegate d = value.Value as Delegate;
if(d != null)
{
CompiledQuery cq = d.Target as CompiledQuery;
if(cq != null)
{
return this.VisitInvocation(Expression.Invoke(cq.Expression, invoke.Arguments));
}
else if(invoke.Arguments.Count == 0)
{
object invokeResult;
try
{
invokeResult = d.DynamicInvoke(null);
}
catch(System.Reflection.TargetInvocationException e)
{
throw e.InnerException;
}
return _nodeFactory.ValueFromObject(invokeResult, invoke.Type, true, _dominatingExpression);
}
}
}
SqlExpression[] args = new SqlExpression[invoke.Arguments.Count];
for(int i = 0; i < args.Length; ++i)
{
args[i] = (SqlExpression)this.Visit(invoke.Arguments[i]);
}
var sca = new SqlClientArray(typeof(object[]), _typeProvider.From(typeof(object[])), args, _dominatingExpression);
return _nodeFactory.MethodCall(invoke.Type, typeof(Delegate).GetMethod("DynamicInvoke"), expr, new SqlExpression[] { sca }, _dominatingExpression);
}
}
internal override SqlExpression VisitClientArray(SqlClientArray scar)
{
if(!_isDebugMode)
{
throw Error.InvalidFormatNode("ClientArray");
}
_commandStringBuilder.Append("new []{");
for(int i = 0, n = scar.Expressions.Count; i < n; i++)
{
if(i > 0) _commandStringBuilder.Append(", ");
this.Visit(scar.Expressions[i]);
}
_commandStringBuilder.Append("}");
return scar;
}
private Type GenerateClientArray(SqlClientArray ca)
{
if(!ca.ClrType.IsArray)
{
throw Error.CannotMaterializeList(ca.ClrType);
}
Type elemType = TypeSystem.GetElementType(ca.ClrType);
this.GenerateConstInt(ca.Expressions.Count);
gen.Emit(OpCodes.Newarr, elemType);
for(int i = 0, n = ca.Expressions.Count; i < n; i++)
{
gen.Emit(OpCodes.Dup);
this.GenerateConstInt(i);
this.GenerateExpressionForType(ca.Expressions[i], elemType);
this.GenerateArrayAssign(elemType);
}
return ca.ClrType;
}
internal override SqlExpression VisitClientArray(SqlClientArray scar)
{
SqlExpression[] exprs = new SqlExpression[scar.Expressions.Count];
for(int i = 0, n = exprs.Length; i < n; i++)
{
exprs[i] = this.VisitExpression(scar.Expressions[i]);
}
return new SqlClientArray(scar.ClrType, scar.SqlType, exprs, scar.SourceExpression);
}
