public static void GenerateInsertColumnList <TEntity, TParams>(this Expression <InsertSpecificationDelegate <TEntity, TParams> > insert, StringBuilder commandText, IdentifierQuoter quoter, IQueryMetadata metadata)
{
// Generate insert values
commandText.Append("( ");
new NewObjectExpressionVisitor(
n => commandText.AppendFormat("{0}, ", quoter.QuoteName(metadata.ColumnMappings[n.Member.Name]))
).Visit(insert);
commandText.Length -= 2; // Remove last comma
commandText.AppendLine(" )");
}
protected override Expression VisitMember(MemberExpression node)
{
ParameterSyntaxType type;
if (parameterMappings == null)
{
type = ParameterSyntaxType.Argument;
}
else
{
Expression parameterNode;
MemberExpression current = node;
do
{
parameterNode = current.Expression;
current = parameterNode as MemberExpression;
} while (current != null);
type = parameterMappings[parameterNode];
}
switch (type)
{
case ParameterSyntaxType.None:
output.Append(quoter.QuoteName(tableMetadata.ColumnMappings[node.Member.Name]));
break;
case ParameterSyntaxType.Target:
output.Append("T.").Append(quoter.QuoteName(tableMetadata.ColumnMappings[node.Member.Name]));
break;
case ParameterSyntaxType.Source:
output.Append("S.").Append(quoter.QuoteName(tableMetadata.GetParameterName(node)));
break;
case ParameterSyntaxType.Argument:
output.AppendFormat("@{0}", tableMetadata.GetParameterName(node));
break;
}
return(node);
}
public static void GenerateUpdateSetList <TEntity, TParams>(this Expression <UpdateSpecificationDelegate <TEntity, TParams> > update, StringBuilder commandText, IdentifierQuoter quoter, IQueryMetadata metadata, ParameterSyntaxType entityParameterType)
{
new NewObjectExpressionVisitor(
n =>
{
commandText.AppendFormat("{0} = ", quoter.QuoteName(metadata.ColumnMappings[n.Member.Name]));
new SqlCodeGeneratorExpressionVisitor(commandText, new Dictionary <Expression, ParameterSyntaxType>
{
{ update.Parameters[0], entityParameterType },
{ update.Parameters[1], ParameterSyntaxType.Argument },
}, metadata, quoter).Visit(((MemberAssignment)n).Expression);
commandText.Append(",");
}
).Visit(update);
commandText.Length--; // Remove last comma
commandText.AppendLine();
}
