public override void ReplaceWith(SqlExpression expression)
{
ArgumentValidator.EnsureArgumentNotNull(expression, "expression");
ArgumentValidator.EnsureArgumentIs <SqlTrim>(expression, "expression");
var replacingExpression = (SqlTrim)expression;
this.expression = replacingExpression.expression;
trimCharacters = replacingExpression.trimCharacters;
trimType = replacingExpression.TrimType;
}
/// <inheritdoc/>
public override string Translate(SqlTrimType type)
{
return(string.Empty);
}
internal SqlTrim(SqlExpression expression, string trimCharacters, SqlTrimType trimType) : base(SqlNodeType.Trim)
{
this.expression = expression;
this.trimCharacters = trimCharacters;
this.trimType = trimType;
}
private static SqlExpression GenericTrim(SqlExpression _this, SqlExpression trimChars, SqlTrimType trimType)
{
if (trimChars is SqlNull)
{
return(SqlDml.Trim(_this, trimType));
}
var container = trimChars as SqlContainer;
if (container.IsNullReference())
{
throw new NotSupportedException(Strings.ExStringTrimSupportedOnlyWithConstants);
}
var chars = container.Value as char[];
if (chars == null)
{
throw new NotSupportedException(Strings.ExStringTrimSupportedOnlyWithConstants);
}
return(chars.Length == 0
? SqlDml.Trim(_this, trimType)
: SqlDml.Trim(_this, trimType, new string(chars)));
}
private static SqlExpression GenericTrim(SqlExpression _this, SqlExpression trimChars, SqlTrimType trimType)
{
if (trimChars is SqlNull)
{
return(SqlDml.Trim(_this, trimType));
}
if (!(trimChars is SqlContainer container))
{
throw new NotSupportedException(Strings.ExStringTrimSupportedOnlyWithConstants);
}
if (!(container.Value is char[] chars))
{
throw new NotSupportedException(Strings.ExStringTrimSupportedOnlyWithConstants);
}
return(chars.Length == 0
? SqlDml.Trim(_this, trimType)
: SqlDml.Trim(_this, trimType, new string(chars)));
}
