Re: NGP: Prototyping
Hi, A few remarks about the current NGP prototype: java.nio.ByteBuffer (FileJournal / MediumRecord) Just curious, did you run some tests, is it faster than using RandomAccessFile.read? FileChannel.map My experience with memory mapped files is: it is fast, but problematic. The biggest problem (for me) is: there is no way to unmap a file. That means it is not possible to truncate, rename, or delete a file that was once mapped. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4724038 Journal: A record is never modified or removed once it has been added to a journal.. I agree, if there is a mechanism to removing old journal files. Thomas
[jira] Updated: (JCR-1043) Package names for spring project do not match update ocm packages
[ https://issues.apache.org/jira/browse/JCR-1043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Padraic Hannon updated JCR-1043: Attachment: spring.patch Here is a patch based on the latest version of the ocm-mapping project. Package names for spring project do not match update ocm packages - Key: JCR-1043 URL: https://issues.apache.org/jira/browse/JCR-1043 Project: Jackrabbit Issue Type: Bug Components: jcr-mapping Affects Versions: 1.3 Environment: All environments Reporter: Padraic Hannon Assignee: Christophe Lombart Priority: Blocker Attachments: spring.patch The spring package and tests reference the old graffitto package naming scheme. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Updated: (JCR-1043) Package names for spring project do not match update ocm packages
[ https://issues.apache.org/jira/browse/JCR-1043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Padraic Hannon updated JCR-1043: Attachment: (was: spring.tar.gz) Package names for spring project do not match update ocm packages - Key: JCR-1043 URL: https://issues.apache.org/jira/browse/JCR-1043 Project: Jackrabbit Issue Type: Bug Components: jcr-mapping Affects Versions: 1.3 Environment: All environments Reporter: Padraic Hannon Assignee: Christophe Lombart Priority: Blocker Attachments: spring.patch The spring package and tests reference the old graffitto package naming scheme. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Commented: (JCR-1067) Referenced beans in an object graph should be persisted by the ocm automatically
[ https://issues.apache.org/jira/browse/JCR-1067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542817 ] Padraic Hannon commented on JCR-1067: - Should I create new converters? We are starting to more actively use OCM and we feel this is an important feature to have. Referenced beans in an object graph should be persisted by the ocm automatically Key: JCR-1067 URL: https://issues.apache.org/jira/browse/JCR-1067 Project: Jackrabbit Issue Type: Improvement Components: jcr-mapping Affects Versions: 1.3.1 Reporter: Padraic Hannon Attachments: BeanReferenceCollectionConverterImpl.diff, ReferenceBeanConverterImpl.diff Currently the BeanReferenceCollectionConverter and ReferenceBeanConverter classes only persist the UUID of the referenced object. There should either be new converter classes that cascade down the object graph to ensure all referenced items are created or updated, or the existing ones should be updated to cascade. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
[jira] Commented: (JCR-1043) Package names for spring project do not match update ocm packages
[ https://issues.apache.org/jira/browse/JCR-1043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542874 ] Padraic Hannon commented on JCR-1043: - I was about to make a jira ticket for that as well, I already started moving to maven 2 and will make sure yo upgrade to the newest spring. Pih -- Not sent from my iPhone Package names for spring project do not match update ocm packages - Key: JCR-1043 URL: https://issues.apache.org/jira/browse/JCR-1043 Project: Jackrabbit Issue Type: Bug Components: jcr-mapping Affects Versions: 1.3 Environment: All environments Reporter: Padraic Hannon Assignee: Christophe Lombart Priority: Blocker Attachments: spring.patch The spring package and tests reference the old graffitto package naming scheme. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.
Re: NGP: Prototyping
Hi, On Nov 15, 2007 11:07 AM, Thomas Mueller [EMAIL PROTECTED] wrote: A few remarks about the current NGP prototype: java.nio.ByteBuffer (FileJournal / MediumRecord) Just curious, did you run some tests, is it faster than using RandomAccessFile.read? I'm planning to... It would be really nice to map the entire journal file (or the part that already exists when a repository is started) into memory for direct access. In theory this should reduce the amount of copying taking place, but it's still unclear whether that happens in practice. FileChannel.map My experience with memory mapped files is: it is fast, but problematic. The biggest problem (for me) is: there is no way to unmap a file. That means it is not possible to truncate, rename, or delete a file that was once mapped. See: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4724038 Journal: A record is never modified or removed once it has been added to a journal.. I agree, if there is a mechanism to removing old journal files. The way I see it, during normal operation we only need to be able to append data to the file, so this shouldn't be a problem. At some points the journal file needs to be vacuumed to save space, but that operation would typically produce a new file that's then used to replace the old journal. I'm not yet sure how often and at which points such vacuuming needs to take place. Also, I have an experimental C version of the journal and tree code. The idea behind that is possibly to implement a mod_dav module to enable direct WebDAV access to the tree structure stored in the journal. The C implementation could also eventually become a highly optimized JNI backend for an NGP implementation, in which case we'd also have much more control over memory mapping (of course at the expense of operating system dependencies). BR, Jukka Zitting
Adding XML DB Persistence Manager
Hello Mates I am new to jackrabbit world. I want to implement an XML DB persistence manager which will store all of my repository data in Sedna DB (XML DB). Can any one help on this by providing some info / tutorial about JackRabbit Persistence manager layer / life cycle etc Thanks in advance Regards ~Amir Rafique DISCLAIMER: This e-mail and any file transmitted with it is confidential and intended solely for the use of the addressee. If you are not the intended recipient, you are notified that disclosing, copying, distributing or taking any action regarding the contents of this information is strictly prohibited. If you have received this email in error, please return the original to the sender and destroy the same immediately. Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the company. WARNING: The recipient should check this email and any attachment for the presence of viruses. Although the company has taken reasonable precautions to ensure no viruses are present in this email, the company does not accept responsibility for any loss or damage arising from the use of this email or attachment.
