From user-return-183-archive-asf-public=cust-asf.ponee.io@arrow.apache.org Fri Aug 30 17:27:24 2019 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id D8E7618065E for ; Fri, 30 Aug 2019 19:27:23 +0200 (CEST) Received: (qmail 69522 invoked by uid 500); 30 Aug 2019 17:27:23 -0000 Mailing-List: contact user-help@arrow.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@arrow.apache.org Delivered-To: mailing list user@arrow.apache.org Received: (qmail 69511 invoked by uid 99); 30 Aug 2019 17:27:23 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 30 Aug 2019 17:27:23 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id 8AD591A33E2 for ; Fri, 30 Aug 2019 17:27:22 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -0.199 X-Spam-Level: X-Spam-Status: No, score=-0.199 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=disabled Authentication-Results: spamd2-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-he-de.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id lXjO5vXf7A8C for ; Fri, 30 Aug 2019 17:27:20 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2607:f8b0:4864:20::d32; helo=mail-io1-xd32.google.com; envelope-from=wesmckinn@gmail.com; receiver= Received: from mail-io1-xd32.google.com (mail-io1-xd32.google.com [IPv6:2607:f8b0:4864:20::d32]) by mx1-he-de.apache.org (ASF Mail Server at mx1-he-de.apache.org) with ESMTPS id DF9077D3FC for ; Fri, 30 Aug 2019 17:27:19 +0000 (UTC) Received: by mail-io1-xd32.google.com with SMTP id o9so15621802iom.3 for ; Fri, 30 Aug 2019 10:27:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=sfwIf3KxNJVGtb6cZ36geTlbKLPJS8h3lIZPFpbtT5U=; b=a4og6JH5uPUwpVrdC0IwGpcUzL0Tb00VEZPRcFM7kUJUnO96F8rBQpyP2gx68FYSAM kqKU4Ib8BIRDnNRiw/dMpVp9TN6vgB7iOgelMr5QIkx/g61ewWDsT3/YSvV3iGXx3dvx 2axCNYyDxphCI4jQwPeoMOpzDyc2c5hoOT8SyrRpykWrU+RJ4DSnhu2NqRgtJqNxvvNL PU91kvpfjB0dAQiRSustx20tCi31A2j2rAwpYm0zHoxc21SC43lTZX8rUxXPgdwjpqoM 1at92XDVno1aeqzmJzseT3Cz1/tWfNXDXiBlydgENZLJqxOPBv2g5tHkxROpzh/5m2Mw g/Nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=sfwIf3KxNJVGtb6cZ36geTlbKLPJS8h3lIZPFpbtT5U=; b=sn8SR+HRQY0N8v9xJBGW5QoC3Y8+ApM0Db7V6zkIX4D6AoVlihLuwPlPjsJa0t0qaK AeliyODH10xenK8Diu9E7FgE0Z/aJEC4fyw14XMkg3tGRQ9CFq0kTYEJSL2FFBpdJEGJ bHtIL94cwlHPRU8K3gfiSLT/MnqtDI2n0ults0i07JJG19c6RTS1PEZVNweOe2ccLTYl gC76VUFwnKnRU95pjT9d5HCDtuhOt7QBRToNdVJXnBUjCfVWR5bZNfPkEynrTpl8pCe9 ByH3kTtyJrasTc7YmntcHr1oxd1I+YwPiXqx4g1Rz8EIDWbp9w77KnM5nUWm8NCvrmu9 eVGw== X-Gm-Message-State: APjAAAWwYLWqdszN47EKrhTTN5UixFtkmnwbh7l6N7Tr+HkOSgyNbdQi w0wR0rK/ppsm8g1eRKFNm/itWeVsLNwi9aU9kjklcGRY X-Google-Smtp-Source: APXvYqwKYYMGiwhgkedCNbCntt3iVCna607t5GTIMxUbmEFO0shrWKK26R48iU9dKuLEdAx0mN7YLmdLzN9NImTYw9w= X-Received: by 2002:a5d:9c02:: with SMTP id 2mr1158877ioe.44.1567186038190; Fri, 30 Aug 2019 10:27:18 -0700 (PDT) MIME-Version: 1.0 References: <16ce1f3a1c0.27b7.727fde9afb6860196ef19c74546e60d2@ipp.mpg.de> In-Reply-To: <16ce1f3a1c0.27b7.727fde9afb6860196ef19c74546e60d2@ipp.mpg.de> From: Wes McKinney Date: Fri, 30 Aug 2019 12:26:40 -0500 Message-ID: Subject: Re: Reccord-Level Access To: user@arrow.apache.org Content-Type: text/plain; charset="UTF-8" hi Simon -- I don't think there is any such Row accessor class in Java but you are welcome to contribute one to the project. For performance sensitive applications, using a record interface might not be the best idea, but I can understand the convenience for some uses cases. - Wes On Fri, Aug 30, 2019 at 4:55 AM Simon Dumke wrote: > > Hi all, > > > > > I did not find anything (and so: no definite answer) in the docs, so i > thought to ask here: > > > > > Does Arrow (and at this point my main concern is Arrow for java) support > any type of concept that allows a "record level access" (so, a "row") to > data in an Arrow RecordBatch or Table? I would have thougt that even in > column-oriented analytics etc. this would be a common last step access > pattern over many use cases, but i could not find any references to such a > thing. > > > > > Thanks and kind regards, > Simon > >