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A namespace prefix is not registered - Simple OCR

anoopkr

Hi,

In our 6.2 installation we have or rather had this OCR module (2.3.1) it worked flawlessly. We are now migrating the 6.2 to latest version, we did it through version 7 and all are working (seemingly) fine, except, in Workspace application and error comes at certain entries, "This item no longer exists or you don't have permission to view it. ", the error log says " A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0". We had removed the jar files and global-properties entries related to OCR and all the folder rules before taking the backup of both content store and DB in 6.2 and we suspect this could be the error. Someone please help to tackle this issue, apart from this everything looks okay.

An excerpt from the log file.

Caused by: org.alfresco.scripts.ScriptException: 09090057 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/metadata/metadata.get.js': A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0
Caused by: org.alfresco.service.namespace.NamespaceException: A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0
2024-10-09 04:52:07,076 WARN [org.alfresco.repo.module.ModuleServiceImpl] [main] A previously-installed module 'simple-ocr-repo' (version 2.3.1) is not present in your distribution.
2024-10-09 05:13:13,023 ERROR [org.springframework.extensions.webscripts.AbstractRuntime] [http-nio-8080-exec-7] Exception from executeScript: 09090017 Wrapped Exception (with status template): 09090054 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/metadata/metadata.get.js': A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0
org.springframework.extensions.webscripts.WebScriptException: 09090017 Wrapped Exception (with status template): 09090054 Failed to execute script 'classpath*:alfresco/templates/webscripts/org/alfresco/repository/metadata/metadata.get.js': A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0

Regards

ANOOP KR

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Alfresco Content Services

Accepted answers

angelborroy

Please, use the last version of the Alfresco Model Extractor app:

https://github.com/aborroy/alfresco-model-extractor/releases/tag/0.2.0

The previous one (0.1.0) was creating the JAR with an incorrect module version.

Create again the JAR and apply it again to your Alfresco deployment.

All comments

angel-borroy

There are nodes in your repository with the custom Content Model applied (http://www.keensoft.es/model/content/ocr/1.0). You can delete these nodes or maintain the previous Content Model in your new deployment.

anoopkr

Hi,

Thanks for the quick reply, We are no experts is Alfresco but Linux admins, can you elaborate a little ?

Regards.

angel-borroy

Preserve the JAR for the Repository (alfresco.war).

anoopkr

Hi,

We would rather like to delete the model, because that OCR solution does not work in 23.X, that is why we tried to delete it. BTW is it possible to apply docker for the OCR solution ? Our installation is done through zip files, using Angel Borroy's scripts, because we could not find another OCR solution rather than the docker one.

Regards

angel-borroy

You cannot delete the model, but you can apply it creating a new module containing the definition (https://github.com/keensoft/alfresco-simple-ocr/blob/master/simple-ocr-repo/src/main/resources/alfresco/module/simple-ocr-repo/model/ocr-model.xml).

You can use the OCR module for ACS 7.x or later available in https://github.com/aborroy/alf-tengine-ocr

This module supports both ZIP Distribution files and Docker deployment.

anoopkr

Hi,

If I delete the nodes, will it solve the issue we mentioned ? If so can you tell me how ? Then I can follow the link you provided for OCR

Regards

anoopkr

Hi,

Pls let me know how to delete the nodes.

Regards

anoopkr

My problem is still unresolved, someone kindly lend a hand.

Reg

douglascrp

You will have to keep the jar file or deploy only the content model in a custom project to delete the nodes.

You can use a simple search and delete using share, or create a custom javascript to do that.

But if you need the documents that got the OCR applied, it might be better to simply search and remove the ocr:ocrd aspect only, as by doing that, all the documents will be kept in the repository.

As soon as the aspect is removed from all the documents, it will be safe to remove the jar file.

anoopkr

Hi,

Many thanks for the response, If I keep the jar in place it gives me errors and Alfresco would not let me to log-in. Actually all I need the data intact that I can transfer to a newer version, OCR and other services I don't care, at least for time being. Is it possible ? Other than OCR we had a few others as well, like "folder quota" etc, they too are making issues, I hope following OCR I could solve other issues as well. We are not experts in alfresco or java, but in the past we have somehow resolved all the issues by googling and using forums, so the abstract answers I get are a bit difficult to comprehend and I am perfectly aware that an elaborate answer is not possible as well.

Regards

anoopkr

Hi,

From the user home, I move to sites where my documents stored, and when I reach there where the OCRd items kept, this error pops up

2024-10-24T07:38:58,785 [] ERROR [framework.webscripts.ResourceWebScriptGet] [http-nio-8080-exec-4] Exception df97ecbc-6e57-464e-9545-0f45844405bf. Request /alfresco/api/-default-/public/alfresco/versions/1/nodes/4da04105-9039-4eca-abbb-8ff681dea9a7/children?maxItems=25&orderBy=isFolder desc,name ASC&include=path,properties,allowableOperations,permissions,aspectNames,isFavorite,definition&includeSource=true executed by anoop.kr returned status code 500 with message: A namespace prefix is not registered for uri http://www.keensoft.es/model/content/ocr/1.0 - Stack Trace: [org.alfresco.service.namespace.QName.toPrefixString(QName.java:424), org.alfresco.rest.api.impl.NodesImpl.mapFromNodeProperties(NodesImpl.java:1257), org.alfresco.rest.api.impl.NodesImpl.getFolderOrDocument(NodesImpl.java:915), org.alfresco.rest.api.impl.NodesImpl$2.get(NodesImpl.java:1357), org.alfresco.rest.api.impl.NodesImpl$2.get(NodesImpl.java:1348), java.base/java.util.AbstractList$Itr.next(AbstractList.java:371), org.alfresco.rest.framework.webscripts.ResourceWebScriptHelper.processAdditionsToTheResponse(ResourceWebScriptHelper.java:145), org.alfresco.rest.framework.webscripts.AbstractResourceWebScript$3.execute(AbstractResourceWebScript.java:220), org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:452), org.alfresco.rest.framework.webscripts.AbstractResourceWebScript.execute(AbstractResourceWebScript.java:208), org.alfresco.rest.framework.webscripts.AbstractResourceWebScript$1.execute(AbstractResourceWebScript.java:116), org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:452), org.alfresco.rest.framework.webscripts.AbstractResourceWebScript.execute(AbstractResourceWebScript.java:133), org.alfresco.rest.framework.webscripts.ApiWebScript.execute(ApiWebScript.java:112), org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecute(RepositoryContainer.java:506), org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:685), org.alfresco.repo.web.scripts.RepositoryContainer.transactionedExecuteAs(RepositoryContainer.java:721), org.alfresco.repo.web.scripts.RepositoryContainer.executeScriptInternal(RepositoryContainer.java:413), org.alfresco.repo.web.scripts.RepositoryContainer.executeScript(RepositoryContainer.java:309), org.alfresco.rest.api.PublicApiRepositoryContainer.access$001(PublicApiRepositoryContainer.java:47), org.alfresco.rest.api.PublicApiRepositoryContainer$1.doWork(PublicApiRepositoryContainer.java:84), org.alfresco.repo.tenant.TenantUtil.runAsWork(TenantUtil.java:126), org.alfresco.repo.tenant.TenantUtil.runAsTenant(TenantUtil.java:95), org.alfresco.rest.api.PublicApiRepositoryContainer.executeScript(PublicApiRepositoryContainer.java:80), org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:423), org.springframework.extensions.webscripts.AbstractRuntime.executeScript(AbstractRuntime.java:210), org.alfresco.repo.web.scripts.TenantWebScriptServlet.service(TenantWebScriptServlet.java:82), jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.springframework.extensions.webscripts.servlet.SecurityHeadersFilter.doFilter(SecurityHeadersFilter.java:177), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.alfresco.repo.web.filter.beans.NullFilter.doFilter(NullFilter.java:75), jdk.internal.reflect.GeneratedMethodAccessor588.invoke(Unknown Source), java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43), java.base/java.lang.reflect.Method.invoke(Method.java:569), org.alfresco.repo.management.subsystems.ChainingSubsystemProxyFactory$1.invoke(ChainingSubsystemProxyFactory.java:132), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:244), jdk.proxy3/jdk.proxy3.$Proxy189.doFilter(Unknown Source), org.alfresco.repo.web.filter.beans.BeanProxyFilter.doFilter(BeanProxyFilter.java:89), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.alfresco.web.app.servlet.GlobalLocalizationFilter.doFilter(GlobalLocalizationFilter.java:68), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.alfresco.web.app.servlet.ClearSecurityContextFilter.doFilter(ClearSecurityContextFilter.java:53), org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164), org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140), org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167), org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90), org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:483), org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115), org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93), org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:663), org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74), org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344), org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:384), org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63), org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:905), org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1741), org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52), org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1190), org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659), org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63), java.base/java.lang.Thread.run(Thread.java:840)]

Kindle see the log and guide me

Regards

douglascrp

I guess all you need to do is comment out all the OCR-related beans in this file, package it again, and deploy the jar.

By doing that, you will have the content model available to let alfresco start.

anoopkr

Hi,

Unfortunately it did not work.

Regards

angelborroy

I have created this tool: https://github.com/aborroy/alfresco-model-extractor

It will allow you to extract the content model from original addons (like OCR or quotas) and create new JARs for your upgraded installation that contain only required Content Model.

Let me know if that helps.

douglascrp

Angel being Angel.

Really useful tool... Thank you

anoopkr

That was incredible, the support you extended, you cant imagine how we felt seeing it. But I could not reach my target, the issue remains the same,could it be Error when I go the directory where ocrd files presentCorresponding catalina.outsome thing else ? I am attaching images of the error and corresponding catalina.out, kindly see it.

Ps: Everything looks okay when I browse through share application

Regards

angelborroy

Please, use the last version of the Alfresco Model Extractor app:

https://github.com/aborroy/alfresco-model-extractor/releases/tag/0.2.0

The previous one (0.1.0) was creating the JAR with an incorrect module version.

Create again the JAR and apply it again to your Alfresco deployment.

anoopkr

Hi,

With the support from Mr Angel and Douglascrp, we successfully eliminated the issues we were facing. It was incredible, the help you people offered, without which we probably could never achieve the goal, thanks in abundance.

Stay well.

Regards

From India.

anoopkr

Hi,

Is it possible to run the al-tengine-ocr with a port different than 8090 ? If so, please let me know.

Regards