internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
Type clientElementType = cq.Query.NodeType == SqlNodeType.Multiset ? TypeSystem.GetElementType(cq.ClrType) : cq.ClrType;
ICompiledSubQuery c = this.provider.CompileSubQuery(cq.Query.Select, clientElementType, cq.Parameters.AsReadOnly());
cq.Ordinal = this.subQueries.Count;
this.subQueries.Add(c);
return cq;
}
internal static SqlClientQuery Extract(SqlSubSelect subquery, IEnumerable<SqlParameter> parentParameters)
{
SqlClientQuery cq = new SqlClientQuery(subquery);
if(parentParameters != null)
{
cq.Parameters.AddRange(parentParameters);
}
SubSelectDuplicator v = new SubSelectDuplicator(cq.Arguments, cq.Parameters);
cq.Query = (SqlSubSelect)v.Visit(subquery);
return cq;
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
SqlSubSelect query = (SqlSubSelect)this.VisitExpression(cq.Query);
SqlClientQuery nq = new SqlClientQuery(query);
for(int i = 0, n = cq.Arguments.Count; i < n; i++)
{
nq.Arguments.Add(this.VisitExpression(cq.Arguments[i]));
}
for(int i = 0, n = cq.Parameters.Count; i < n; i++)
{
nq.Parameters.Add((SqlParameter)this.VisitExpression(cq.Parameters[i]));
}
return nq;
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
return cq;
}
internal virtual SqlExpression VisitClientQuery(SqlClientQuery cq) {
for (int i = 0, n = cq.Arguments.Count; i < n; i++) {
cq.Arguments[i] = this.VisitExpression(cq.Arguments[i]);
}
return cq;
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
// block where clauses from being lifted out of a client-materialized sub-query
Scope save = this.current;
this.current = null;
SqlExpression result = base.VisitClientQuery(cq);
this.current = save;
return result;
}
private Type GenerateClientQuery(SqlClientQuery cq, LocalBuilder locInstance)
{
Type clientElementType = cq.Query.NodeType == SqlNodeType.Multiset ? TypeSystem.GetElementType(cq.ClrType) : cq.ClrType;
gen.Emit(OpCodes.Ldarg_0); // ObjectReaderBase
this.GenerateConstInt(cq.Ordinal); // iSubQuery
// create array of subquery parent args
this.GenerateConstInt(cq.Arguments.Count);
gen.Emit(OpCodes.Newarr, typeof(object));
// intialize arg values
for(int i = 0, n = cq.Arguments.Count; i < n; i++)
{
gen.Emit(OpCodes.Dup);
this.GenerateConstInt(i);
Type clrType = cq.Arguments[i].ClrType;
if(cq.Arguments[i].NodeType == SqlNodeType.ColumnRef)
{
SqlColumnRef cref = (SqlColumnRef)cq.Arguments[i];
if(clrType.IsValueType && !TypeSystem.IsNullableType(clrType))
{
clrType = typeof(Nullable<>).MakeGenericType(clrType);
}
this.GenerateColumnAccess(clrType, cref.SqlType, cref.Column.Ordinal, null);
}
else
{
this.GenerateExpressionForType(cq.Arguments[i], cq.Arguments[i].ClrType);
}
if(clrType.IsValueType)
{
gen.Emit(OpCodes.Box, clrType);
}
this.GenerateArrayAssign(typeof(object));
}
MethodInfo miExecute = typeof(ObjectMaterializer<>).MakeGenericType(this.compiler.DataReaderType)
.GetMethod("ExecuteSubQuery", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
Diagnostics.Debug.Assert(miExecute != null);
gen.Emit(GetMethodCallOpCode(miExecute), miExecute);
Type actualType = typeof(IEnumerable<>).MakeGenericType(clientElementType);
gen.Emit(OpCodes.Castclass, actualType);
Type resultType = typeof(List<>).MakeGenericType(clientElementType);
this.GenerateConvertToType(actualType, resultType);
return resultType;
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
if(!_isDebugMode)
{
throw Error.InvalidFormatNode("ClientQuery");
}
_commandStringBuilder.Append("client(");
for(int i = 0, n = cq.Arguments.Count; i < n; i++)
{
if(i > 0) _commandStringBuilder.Append(", ");
this.Visit(cq.Arguments[i]);
}
_commandStringBuilder.Append("; ");
this.Visit(cq.Query);
_commandStringBuilder.Append(")");
return cq;
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
// pass control back to parent
return this.parent.VisitClientQuery(cq);
}
internal override SqlExpression VisitClientQuery(SqlClientQuery cq)
{
this.FoundHierarchy = true;
return cq;
}
