/// <summary>
/// Contains
/// </summary>
/// <param name="expression">表达式树</param>
/// <param name="sqlPack">sql打包对象</param>
private static void Contains(MethodCallExpression expression, SqlPack sqlPack)
{
if (expression.Object != null)
{
if (typeof(IList).IsAssignableFrom(expression.Object.Type))
{
SqlBuilderProvider.Where(expression.Arguments[0], sqlPack);
sqlPack += " IN ";
SqlBuilderProvider.In(expression.Object, sqlPack);
}
else
{
SqlBuilderProvider.Where(expression.Object, sqlPack);
switch (sqlPack.DatabaseType)
{
case DatabaseType.SQLServer:
sqlPack += " LIKE '%' + ";
break;
case DatabaseType.MySQL:
case DatabaseType.PostgreSQL:
sqlPack += " LIKE CONCAT('%',";
break;
case DatabaseType.Oracle:
case DatabaseType.SQLite:
sqlPack += " LIKE '%' || ";
break;
default:
break;
}
SqlBuilderProvider.Where(expression.Arguments[0], sqlPack);
switch (sqlPack.DatabaseType)
{
case DatabaseType.SQLServer:
sqlPack += " + '%'";
break;
case DatabaseType.MySQL:
case DatabaseType.PostgreSQL:
sqlPack += ",'%')";
break;
case DatabaseType.Oracle:
case DatabaseType.SQLite:
sqlPack += " || '%'";
break;
default:
break;
}
}
}
else if (expression.Arguments.Count > 1 && expression.Arguments[1] is MemberExpression memberExpression)
{
SqlBuilderProvider.Where(memberExpression, sqlPack);
sqlPack += " IN ";
SqlBuilderProvider.In(expression.Arguments[0], sqlPack);
}
}
/// <summary>
/// Not In
/// </summary>
/// <param name="expression">表达式树</param>
/// <param name="sqlPack">sql打包对象</param>
private static void NotIn(MethodCallExpression expression, SqlPack sqlPack)
{
SqlBuilderProvider.Where(expression.Arguments[0], sqlPack);
sqlPack += " NOT IN ";
SqlBuilderProvider.In(expression.Arguments[1], sqlPack);
}
