public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList<SqlExpression> arguments, IDiagnosticsLogger<DbLoggerCategory.Query> logger)
{
if (!SupportedMethods.Contains(method))
return null;
return _fbSqlExpressionFactory.Convert(arguments[0], method.ReturnType);
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments)
{
if (!SupportedMethods.Contains(method))
{
return(null);
}
return(_fbSqlExpressionFactory.Convert(arguments[0], method.ReturnType));
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments, IDiagnosticsLogger <DbLoggerCategory.Query> logger)
{
if (!SupportedMethods.Contains(method))
{
return(null);
}
return(_fbSqlExpressionFactory.ApplyDefaultTypeMapping(
_fbSqlExpressionFactory.Convert(_fbSqlExpressionFactory.ApplyDefaultTypeMapping(arguments[0]), method.ReturnType)));
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments)
{
if (method.Name == nameof(ToString) && method.GetParameters().Length == 0)
{
var type = instance.Type.UnwrapNullableType();
if (SupportedTypes.Contains(type))
{
return(_fbSqlExpressionFactory.Convert(instance, typeof(string)));
}
else if (type == typeof(Guid))
{
return(_fbSqlExpressionFactory.Function("UUID_TO_CHAR", new[] { instance }, typeof(string)));
}
}
return(null);
}
public SqlExpression Translate(SqlExpression instance, MethodInfo method, IReadOnlyList <SqlExpression> arguments, IDiagnosticsLogger <DbLoggerCategory.Query> logger)
{
if (method.IsGenericMethod &&
method.GetGenericMethodDefinition().Equals(EnumerableMethods.Contains) &&
arguments[0].Type == typeof(byte[]))
{
var value = arguments[1] is SqlConstantExpression constantValue
? _fbSqlExpressionFactory.Function("ASCII_CHAR", new[] { _fbSqlExpressionFactory.Constant((byte)constantValue.Value) }, false, new[] { false }, typeof(string))
: _fbSqlExpressionFactory.Function("ASCII_CHAR", new[] { _fbSqlExpressionFactory.Convert(_fbSqlExpressionFactory.ApplyDefaultTypeMapping(arguments[1]), typeof(byte)) }, true, new[] { true }, typeof(string));
return(_fbSqlExpressionFactory.GreaterThan(
_fbSqlExpressionFactory.Function(
"POSITION",
new[] { value, _fbSqlExpressionFactory.ApplyDefaultTypeMapping(arguments[0]) },
true,
new[] { true, true },
typeof(int)),
_fbSqlExpressionFactory.Constant(0)));
}
return(null);
}
