public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments)
{
if (method.DeclaringType == typeof(string) && method.Name == nameof(string.IndexOf))
{
return(_fbSqlExpressionFactory.Subtract(
_fbSqlExpressionFactory.Function("POSITION", new[] { arguments[0], instance }.Concat(arguments.Skip(1)), typeof(int)),
_fbSqlExpressionFactory.Constant(1)));
}
return(null);
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments, IDiagnosticsLogger <DbLoggerCategory.Query> logger)
{
if (method.DeclaringType == typeof(string) && method.Name == nameof(string.IndexOf))
{
var args = new[] { arguments[0], instance }.Concat(arguments.Skip(1));
return(_fbSqlExpressionFactory.Subtract(
_fbSqlExpressionFactory.Function("POSITION", args, true, args.Select(_ => true), typeof(int)),
_fbSqlExpressionFactory.Constant(1)));
}
return(null);
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments, IDiagnosticsLogger <DbLoggerCategory.Query> logger)
{
if (method.DeclaringType == typeof(string) && method.Name == nameof(string.IndexOf))
{
var args = new List <SqlExpression>();
args.Add(_fbSqlExpressionFactory.ApplyDefaultTypeMapping(arguments[0]));
args.Add(instance);
foreach (var a in arguments.Skip(1))
{
args.Add(_fbSqlExpressionFactory.ApplyDefaultTypeMapping(a));
}
return(_fbSqlExpressionFactory.Subtract(
_fbSqlExpressionFactory.Function("POSITION", args, true, Enumerable.Repeat(true, args.Count), typeof(int)),
_fbSqlExpressionFactory.Constant(1)));
}
return(null);
}
