public void Build(ISqExtensionBuilder builder)
{
var tableExpr = builder.Arguments[0].EvaluateExpression();
var tableType = ((MethodInfo)builder.Member).GetGenericArguments()[0];
var helperType = typeof(TableHelper <>).MakeGenericType(tableType);
var tableHelper = (TableHelper)Activator.CreateInstance(helperType, tableExpr) !;
var qualified = builder.Arguments.Length <= 1 ? TableQualification.Full : builder.GetValue <TableQualification>(1);
var isExpression = builder.Member.Name == "TableExpr";
if (isExpression)
{
if (qualified == TableQualification.None)
{
builder.ResultExpression = new SqlExpression(typeof(string), tableHelper.TableName, Precedence.Primary);
}
else
{
var table = new SqlTable(tableType)
{
PhysicalName = tableHelper.TableName,
Server = (qualified & TableQualification.ServerName) != 0 ? tableHelper.ServerName : null,
Database = (qualified & TableQualification.DatabaseName) != 0 ? tableHelper.DatabaseName : null,
Schema = (qualified & TableQualification.SchemaName) != 0 ? tableHelper.SchemaName : null,
TableOptions = (qualified & TableQualification.TableOptions) != 0 ? tableHelper.TableOptions : TableOptions.NotSet,
};
builder.ResultExpression = table;
}
}
else
{
var name = tableHelper.TableName;
if (qualified != TableQualification.None)
{
var sb = new StringBuilder();
builder.DataContext.CreateSqlProvider().ConvertTableName(sb,
(qualified & TableQualification.ServerName) != 0 ? tableHelper.ServerName : null,
(qualified & TableQualification.DatabaseName) != 0 ? tableHelper.DatabaseName : null,
(qualified & TableQualification.SchemaName) != 0 ? tableHelper.SchemaName : null,
name,
(qualified & TableQualification.TableOptions) != 0 ? tableHelper.TableOptions : TableOptions.NotSet);
name = sb.ToString();
}
builder.ResultExpression = new SqlValue(name);
}
}
public void Build(ISqExtensionBuilder builder)
{
var tableExpr = builder.GetExpression(0);
SqlTable?sqlTable = null;
if (tableExpr is SqlTable t)
{
sqlTable = t;
}
else if (tableExpr is SqlField field)
{
sqlTable = field.Table as SqlTable;
}
else if (tableExpr is SqlColumn column)
{
sqlTable = QueryHelper.GetUnderlyingField(column)?.Table as SqlTable;
}
//TODO: review, maybe we need here TableSource
if (sqlTable == null)
{
throw new LinqToDBException("Can not find Table associated with expression");
}
var qualified = builder.Arguments.Length <= 1 ? TableQualification.Full : builder.GetValue <TableQualification>(1);
var isExpression = builder.Member.Name == "TableExpr";
var name = sqlTable.PhysicalName !;
if (qualified != TableQualification.None)
{
var sb = new StringBuilder();
builder.DataContext.CreateSqlProvider().ConvertTableName(sb,
(qualified & TableQualification.ServerName) != 0 ? sqlTable.Server : null,
(qualified & TableQualification.DatabaseName) != 0 ? sqlTable.Database : null,
(qualified & TableQualification.SchemaName) != 0 ? sqlTable.Schema : null,
sqlTable.PhysicalName !);
name = sb.ToString();
}
builder.ResultExpression = isExpression
? new SqlExpression(name, Precedence.Primary)
: (ISqlExpression) new SqlValue(name);
}
