topic Re: How to create a new metadata extractor - MAGE-ML tag in Alfresco Archive

How to create a new metadata extractor - MAGE-ML tag

sergio — Mon, 18 Sep 2006 13:55:00 GMT

Hi all.I am going to use Alfresco for a bio-informatics project. We want to use the capabilities of Alfresco to store, manage and retrieve microarray data. In order to reach this goal we want to store MAGE-ML files - XML files - in which there are many tags we want to extract at run-time during the

Re: How to create a new metadata extractor - MAGE-ML tag

sergio — Tue, 19 Sep 2006 07:26:52 GMT

Hi Paul!

Sorry, but I can not understand your kindly reply. Maybe did you want to reply to another post?

Plaese let me know if it is my mistake.

Best regards,

Sergio

Re: How to create a new metadata extractor - MAGE-ML tag

rwetherall — Tue, 19 Sep 2006 07:45:40 GMT

Hi Sergio,

Yes creating a meta data extractor sounds like the correct approach.

Perhaps you would like to contact me directly and we can discus how I can help get this project off the ground.

Many thanks,
Roy

Re: How to create a new metadata extractor - MAGE-ML tag

sergio — Tue, 19 Sep 2006 08:50:12 GMT

Ok.

I have sent an email to your personal address.

Many thanks,

Sergio

Re: How to create a new metadata extractor - MAGE-ML tag

benjamin_doughe — Thu, 02 Nov 2006 14:48:58 GMT

Like Sergio we to need to automatically extract meta data on input from bespoke xml files, for search etc. I understand writing a MetadataExtracter is the approach to take but I was wondering if you could send me or post the same information on the steps etc.

We have to handle multiple schema's so the extractor code will need to be more involved. In addition we will need to handle XMP/IPTC information from image and other binary files (see http://www.iptc.org/IPTC4XMP/).

Thanks,
Ben.

Re: How to create a new metadata extractor - MAGE-ML tag

sergio — Thu, 02 Nov 2006 15:03:58 GMT

Hi Benjamin!

At the moment I am involved in developing an Alfresco extension to extract MAGE-ML metadata from .xml files coming from microarray experiments, but I think the problem is similar to yours. I am going to request the creation of a new Forge project for which I will be supervised by an Alfresco's developer.

I am completing a documentation for the problem on the wiki, so if you are interested in I can provide you with some specs about how to create the extractor.

However, I am not sure the approach I was suggested to follow is the only one and, above all, is the best for all the possible extractors. In my case the extractor is very specialized and it will work only for specific types of xml files.

From your short explanation your need seems very similar to mine, so we can talk about a little if you want.

Please let me say.

All the best,

Sergio

Re: How to create a new metadata extractor - MAGE-ML tag

benjamin_doughe — Thu, 02 Nov 2006 16:00:30 GMT

It seems an IPTC extractor is already being developed at http://forge.alfresco.com/projects/iptc-exif/

Re: How to create a new metadata extractor - MAGE-ML tag

sergio — Thu, 02 Nov 2006 16:22:59 GMT

Ok.

I will take a look.

Cheers.

Sergio

Re: How to create a new metadata extractor - MAGE-ML tag

rgauss — Thu, 24 May 2007 22:41:08 GMT

Not sure if this would still be of interest to anyone here but the IPTC/EXIF project mentioned above (http://forge.alfresco.com/projects/iptc-exif/) now supports reading IPTC/EXIF in XMP.

It does so by extending the XMP Metadata Extensions project (http://forge.alfresco.com/projects/xmp/) which should be able to read XMP from a variety of file types.

Thanks again to Ben for the bug input on IPTC.

Re: How to create a new metadata extractor - MAGE-ML tag

sergio — Fri, 25 May 2007 07:04:07 GMT

Many thanks.

I have been working at new extractor for clinical-genomics metadata (MAGE-ML standard) that will be available soon as an extension of Alfresco, too.

Cheers,

Sergio

Re: How to create a new metadata extractor - MAGE-ML tag

paulhh — Fri, 25 May 2007 08:18:11 GMT

This is really cool work - if you have any ideas on how we can make it easier for people to build extensions and make them available, please let us know.

Cheers
Paul.

Re: How to create a new metadata extractor - MAGE-ML tag

emorretta — Fri, 28 Mar 2008 16:50:33 GMT

Hi,
I have tried to install the xmp Extension but I have had problems because after the installation as described by the readme file the jboss server doesn't deploy alfresco because it doesn't find just installed beans. Follow I show the server.log file content of jboss:

2008-03-28 17:33:56,484 ERROR [org.springframework.web.context.ContextLoader] Context initialization failed
org.springframework.beans.factory.BeanDefinitionStoreException: Error registering bean with name 'org.alfresco.repo.content.metadata.GenericMetadataEmbedder' defined in file [C:\jboss-4.0.5.GA\server\default\conf\alfresco\extension\dublin-core-context.xml]: Could not resolve parent bean definition 'baseMetadataEmbedder'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'baseMetadataEmbedder' is defined
Caused by:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'baseMetadataEmbedder' is defined
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:340)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:906)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:952)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:920)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:906)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:159)
   at org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:691)
   at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:395)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:328)
   at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:156)
   at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:246)
   at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
   at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
   at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3763)
   at org.apache.catalina.core.StandardContext.start(StandardContext.java:4211)
   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
   at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.apache.catalina.core.StandardContext.init(StandardContext.java:5052)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
   at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java:297)
   at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java:103)
   at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:371)
   at org.jboss.web.WebModule.startModule(WebModule.java:83)
   at org.jboss.web.WebModule.startService(WebModule.java:61)
   at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
   at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
   at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
   at $Proxy0.start(Unknown Source)
   at org.jboss.system.ServiceController.start(ServiceController.java:417)
   at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
   at $Proxy38.start(Unknown Source)
   at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
   at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
   at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
   at org.jboss.ws.integration.jboss.DeployerInterceptor.start(DeployerInterceptor.java:92)
   at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188)
   at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
   at $Proxy39.start(Unknown Source)
   at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
   at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
   at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
   at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
   at $Proxy8.deploy(Unknown Source)
   at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
   at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
   at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
   at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
   at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
   at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
   at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
   at $Proxy0.start(Unknown Source)
   at org.jboss.system.ServiceController.start(ServiceController.java:417)
   at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
   at $Proxy4.start(Unknown Source)
   at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
   at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
   at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
   at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
   at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
   at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
   at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
   at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
   at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
   at $Proxy5.deploy(Unknown Source)
   at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
   at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
   at org.jboss.Main.boot(Main.java:200)
   at org.jboss.Main$1.run(Main.java:490)
   at java.lang.Thread.run(Thread.java:619)
2008-03-28 17:33:56,500 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/alfresco]] Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Error registering bean with name 'org.alfresco.repo.content.metadata.GenericMetadataEmbedder' defined in file [C:\jboss-4.0.5.GA\server\default\conf\alfresco\extension\dublin-core-context.xml]: Could not resolve parent bean definition 'baseMetadataEmbedder'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'baseMetadataEmbedder' is defined
Caused by:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'baseMetadataEmbedder' is defined
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:340)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:906)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:952)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:920)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedBeanDefinition(AbstractBeanFactory.java:906)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:159)
   at org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:691)
   at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:395)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:328)
   at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:156)
   at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:246)
   at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:184)
   at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:49)
   at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3763)
   at org.apache.catalina.core.StandardContext.start(StandardContext.java:4211)
   at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
   at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
   at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
   at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.apache.catalina.core.StandardContext.init(StandardContext.java:5052)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
   at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
   at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
   at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java:297)
   at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java:103)
   at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:371)
   at org.jboss.web.WebModule.startModule(WebModule.java:83)
   at org.jboss.web.WebModule.startService(WebModule.java:61)

there is anyone who can solve my problem?,thanks
Emanuele

Re: How to create a new metadata extractor - MAGE-ML tag

rgauss — Fri, 28 Mar 2008 19:41:12 GMT

Sorry, the XMP project now depends on the Metadata Embedders project (http://forge.alfresco.com/projects/embedders/) if you want the ability to embed metadata properties back into the actual file.

If you don't need the embedding functionality you should be able to comment out the GenericMetadataEmbedder bean in dublin-core-context.xml.

I'll update the project's documentation for the next release.

Thanks for spotting the omission.

Re: How to create a new metadata extractor - MAGE-ML tag

emorretta — Mon, 19 May 2008 17:12:02 GMT

Hi,
I am a student and I have to try the iptc/exif metadata extractor for advanced research of images; I have installed the metadata extractor as describe by readme file but even if alfresco extract metadata from images when I try to research the images typing a metadata value in research box it not appears nothing. If there is anyone who have tried to do this please contact me also via mail at the address:emorretta@hotmail.it.thanks

Re: How to create a new metadata extractor - MAGE-ML tag

rgauss — Mon, 19 May 2008 17:24:19 GMT

If I understand your question correctly you're trying to use the simple search box in the upper right hand corner to find metadata that has already been properly extracted into properties of content nodes.

If that is the case you need to modify the properties which that simple search box is searching:
http://wiki.alfresco.com/wiki/Simple_Customisations#Adding_Properties_to_Simple_Search

Re: How to create a new metadata extractor - MAGE-ML tag

emorretta — Tue, 20 May 2008 17:22:08 GMT

hi,
thanks for your reply, I have tried to change web-client-config-custom file to enable the research of exif propertiers but when I type a value of a properties in research box the picture researched not appears maybe I have to specified the full exif properties name including the exif namespace in alfresco, can you help me? thanks

Re: How to create a new metadata extractor - MAGE-ML tag

rgauss — Thu, 22 May 2008 12:42:23 GMT

Yes, you'd need something like:


   <config>
      <client>
         <simple-search-additional-attributes>
            <qname>{http://www.rightsassist.com/model/exif/1.0}artist</qname>
         </simple-search-additional-attributes>
      </client>
   </config>‍‍‍‍‍‍‍‍

Re: How to create a new metadata extractor - MAGE-ML tag

emorretta — Thu, 05 Jun 2008 07:01:12 GMT

Hi,
I am an Italian student and I have to make a new metadata extractor for video files stored in alfresco, for this reason I need to know the procedure to make a new metadata extractor. Can you help me? thanks

Re: How to create a new metadata extractor - MAGE-ML tag

rgauss — Thu, 05 Jun 2008 09:53:54 GMT

http://wiki.alfresco.com/wiki/Developer_Guide

http://wiki.alfresco.com/wiki/Metadata_Extraction