Return-Path: Delivered-To: apmail-db-jdo-dev-archive@www.apache.org Received: (qmail 24790 invoked from network); 25 Jun 2008 22:54:43 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 25 Jun 2008 22:54:43 -0000 Received: (qmail 98728 invoked by uid 500); 25 Jun 2008 22:54:45 -0000 Mailing-List: contact jdo-dev-help@db.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: jdo-dev@db.apache.org Delivered-To: mailing list jdo-dev@db.apache.org Received: (qmail 98711 invoked by uid 99); 25 Jun 2008 22:54:45 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 25 Jun 2008 15:54:45 -0700 X-ASF-Spam-Status: No, hits=-1.0 required=10.0 tests=RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [192.18.43.132] (HELO sca-es-mail-1.sun.com) (192.18.43.132) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 25 Jun 2008 22:53:52 +0000 Received: from fe-sfbay-10.sun.com ([192.18.43.129]) by sca-es-mail-1.sun.com (8.13.7+Sun/8.12.9) with ESMTP id m5PMs99O023524 for ; Wed, 25 Jun 2008 15:54:09 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-10.sun.com by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0K3100M01JCTGQ00@fe-sfbay-10.sun.com> (original mail from Craig.Russell@Sun.COM) for jdo-dev@db.apache.org; Wed, 25 Jun 2008 15:54:09 -0700 (PDT) Received: from [10.0.238.206] ([192.18.37.228]) by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0K31007PVJM6L1E0@fe-sfbay-10.sun.com> for jdo-dev@db.apache.org; Wed, 25 Jun 2008 15:54:06 -0700 (PDT) Date: Wed, 25 Jun 2008 15:54:05 -0700 From: Craig L Russell Subject: Re: SingleFieldIdentity : implement Comparable In-reply-to: <200806251346.31308.andy@datanucleus.org> Sender: Craig.Russell@Sun.COM To: jdo-dev@db.apache.org Cc: JDO Expert Group Message-id: MIME-version: 1.0 X-Mailer: Apple Mail (2.924) Content-type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary=Apple-Mail-87--95955406 References: <200806251346.31308.andy@datanucleus.org> X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Mail-87--95955406 Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit I think it's a fine idea. But think about ObjectIdentity in which the compareTo method would have to delegate to the Object, which itself would have to implement Comparable. And throw some exception at runtime if it didn't implement Comparable. Or just disallow ObjectIdentity from being used... Craig On Jun 25, 2008, at 5:46 AM, Andy Jefferson wrote: > Does anybody have an objection to changing the "SingleFieldIdentity" > (javax.jdo.identity) classes so that they implement Comparable ? > Adding it means that they can be stored in a TreeSet, whereas > currently they > cannot. > > > -- > Andy (DataNucleus - http://www.datanucleus.org) Craig Russell Architect, Sun Java Enterprise System http://java.sun.com/products/jdo 408 276-5638 mailto:Craig.Russell@sun.com P.S. A good JDO? O, Gasp! --Apple-Mail-87--95955406 Content-Disposition: attachment; filename=smime.p7s Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGUDCCAwkw ggJyoAMCAQICECvOQSuIjHMvOZRC95BRg/wwDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UEBhMCWkEx JTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA3MTIxMDE1MjM1MVoXDTA4MTIwOTE1MjM1 MVowbDEQMA4GA1UEBBMHUnVzc2VsbDEUMBIGA1UEKhMLQ3JhaWcgTGFpcmQxHDAaBgNVBAMTE0Ny YWlnIExhaXJkIFJ1c3NlbGwxJDAiBgkqhkiG9w0BCQEWFUNyYWlnLlJ1c3NlbGxAU3VuLkNPTTCC ASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAKzqGlLUastboCRqc0iBoTz2ODcqpMpEyPUo nYtluchkSIoWzOW63AuoTczRt9sKfhwoK5mope+62B6Li06WJabm2UHqKAaNSuMHLsmyqvOdwbSt enY7/HxOSCMqVoyVBTRJc2M8feCSVgi7ptGq9cM+Maa64R1/p9zqaQNucceU/1uper90bWplsjAT rHgicgr9XJIQb6uYjhjlgxxnY/aispnCvLxMX+CiA2FWeeJTI7AiFlLwibTXYF4v12ToByvXtTiJ knuND8qpwhK3Wp0tL4ae8mZ0nlKjCuNnqh99ZyEyTFHZBfVx8WSWRXkY4qxCG/IDQUo7WUaefOQT 1mECAwEAAaMyMDAwIAYDVR0RBBkwF4EVQ3JhaWcuUnVzc2VsbEBTdW4uQ09NMAwGA1UdEwEB/wQC MAAwDQYJKoZIhvcNAQEFBQADgYEAEqfFNFoch0QPVKWJ4maAZl3MJD10yMeWt5xb+WNSkhYKHD8I 42E8tpdE3kmc5wp2cZrz9JqJF/KCQ/gI4pmDk1qpTs5pvXzFNiD5Lu5eLza4iyxSlTHUXcCnyNC6 4m0qC8p4m/51NEql5hyacj/+vdlEe5dygpyNGUCiyA/SdAswggM/MIICqKADAgECAgENMA0GCSqG SIb3DQEBBQUAMIHRMQswCQYDVQQGEwJaQTEVMBMGA1UECBMMV2VzdGVybiBDYXBlMRIwEAYDVQQH EwlDYXBlIFRvd24xGjAYBgNVBAoTEVRoYXd0ZSBDb25zdWx0aW5nMSgwJgYDVQQLEx9DZXJ0aWZp Y2F0aW9uIFNlcnZpY2VzIERpdmlzaW9uMSQwIgYDVQQDExtUaGF3dGUgUGVyc29uYWwgRnJlZW1h aWwgQ0ExKzApBgkqhkiG9w0BCQEWHHBlcnNvbmFsLWZyZWVtYWlsQHRoYXd0ZS5jb20wHhcNMDMw NzE3MDAwMDAwWhcNMTMwNzE2MjM1OTU5WjBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3Rl IENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVtYWls IElzc3VpbmcgQ0EwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAMSmPFVzVftOucqZWh5owHUE cJ3f6f+jHuy9zfVb8hp2vX8MOmHyv1HOAdTlUAow1wJjWiyJFXCO3cnwK4Vaqj9xVsuvPAsH5/Ef kTYkKhPPK9Xzgnc9A74r/rsYPge/QIACZNenprufZdHFKlSFD0gEf6e20TxhBEAeZBlyYLf7AgMB AAGjgZQwgZEwEgYDVR0TAQH/BAgwBgEB/wIBADBDBgNVHR8EPDA6MDigNqA0hjJodHRwOi8vY3Js LnRoYXd0ZS5jb20vVGhhd3RlUGVyc29uYWxGcmVlbWFpbENBLmNybDALBgNVHQ8EBAMCAQYwKQYD VR0RBCIwIKQeMBwxGjAYBgNVBAMTEVByaXZhdGVMYWJlbDItMTM4MA0GCSqGSIb3DQEBBQUAA4GB AEiM0VCD6gsuzA2jZqxnD3+vrL7CF6FDlpSdf0whuPg2H6otnzYvwPQcUCCTcDz9reFhYsPZOhl+ hLGZGwDFGguCdJ4lUJRix9sncVcljd2pnDmOjCBPZV+V2vf3h9bGCE6u9uo05RAaWzVNd+NWIXiC 3CEZNd4ksdMdRv9dX2VPMYIDEDCCAwwCAQEwdjBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhh d3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVt YWlsIElzc3VpbmcgQ0ECECvOQSuIjHMvOZRC95BRg/wwCQYFKw4DAhoFAKCCAW8wGAYJKoZIhvcN AQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMDgwNjI1MjI1NDA2WjAjBgkqhkiG9w0B CQQxFgQUGuS21NJUXhL0s+HuF52SOrFN3/swgYUGCSsGAQQBgjcQBDF4MHYwYjELMAkGA1UEBhMC WkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0 ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAhArzkEriIxzLzmUQveQUYP8MIGHBgsqhkiG 9w0BCRACCzF4oHYwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQ dHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAhAr zkEriIxzLzmUQveQUYP8MA0GCSqGSIb3DQEBAQUABIIBAH2deSo5SeJnaSp/8NpP2Mv3JzrbF/lp QAIhe/1XL/tslOFPYokRn89oN6elj7FnMpx9OoD2jQvPwi+d8up2v2Vaevo87G91v4nQuMUvH1oY 0vQM/gWhbs0dvGiWxsteaSOOrWUYCmNvuxkldYAlY3ui8rYrQ0iqDS38V+1YHyGxSAZcThOVtRCV Wr9DEY8h9zzIny/XbJFZ7868QU/gOhJAAqiEx7kOl2CFDsc0wkRtIkiswjMNYuW8v+b4PIdNt/ed jpX/m4TrytivQ8cLuPkHKQjJG9IiQq0z4Wmd9N4LX998aJLfSrOHsQ5AYwHsXb9994zULQTaDg99 pQqM4jAAAAAAAAA= --Apple-Mail-87--95955406--