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RE: Liferay 7.1 Custom web content search

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Steve Weiss, modified 6 Years ago.
Liferay 7.1 Custom web content search
Regular Member Posts: 112 Join Date: 9/20/11 Recent Posts
I have a custom search application originally developed for LR 6.2. It also worked with 7.0 but there are changes in 7.1 that cause a problem searching web content (journal articles). This is a result of the TITLE and DESCRIPTION fields being taken out of the JOURNALARTICLE table and moved into JOURNALARTICLELOCALIZATION. The original search code can't search on those fields now, so I added some code to search the new table:
        ClassLoader cl = PortalClassLoaderUtil.getClassLoader();
        DynamicQuery q = DynamicQueryFactoryUtil.forClass(JournalArticleLocalization.class, cl);
The code builds but unfortunately, an exception is thrown at that second line:
2019-03-12 19:24:26.376 ERROR [http-nio-8080-exec-2][DynamicQueryFactoryImpl:107] Unable find model com.liferay.journal.model.impl.JournalArticleLocalizationImpl
java.lang.ClassNotFoundException: com.liferay.journal.model.impl.JournalArticleLocalizationImpl
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1104)
    at com.liferay.portal.dao.orm.hibernate.DynamicQueryFactoryImpl.getImplClass(DynamicQueryFactoryImpl.java:129)
    at com.liferay.portal.dao.orm.hibernate.DynamicQueryFactoryImpl.getImplClass(DynamicQueryFactoryImpl.java:95)
    at com.liferay.portal.dao.orm.hibernate.DynamicQueryFactoryImpl.forClass(DynamicQueryFactoryImpl.java:45)
    at com.liferay.portal.kernel.dao.orm.DynamicQueryFactoryUtil.forClass(DynamicQueryFactoryUtil.java:29)
    at gov.nasa.hq.liferay.search.journal.JournalSearch.getArticlesLocalized(JournalSearch.java:576)
I can see that the class in question (JournalArticleLocalizationImpl) is in the journal-service module, I don't understand why this exception is thrown.
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Amos Fong, modified 6 Years ago.
RE: Liferay 7.1 Custom web content search
Liferay Legend Posts: 2047 Join Date: 10/7/08 Recent Posts
hm...normally you would get the dynamicQuery using the localservice like this https://community.liferay.com/forums/-/message_boards/message/88776488. However it looks like JournalArticleLocalization doesn't have a localService...

I'm not sure what your query involves, but if you could do an index search that would probably best. (And write a indexPostProcessor to index more fields from any joins you need)

If you need a short term solution, I think you'll need to get the classloader for the journal-service module which I think is available in ClassLoaderPool or ServletContextClassLoaderPool. This should be avoided if possible though.
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Steve Weiss, modified 6 Years ago.
RE: Liferay 7.1 Custom web content search
Regular Member Posts: 112 Join Date: 9/20/11 Recent Posts
I went with the simplest solution, look up the datasource using JNDI and write a simple SQL query to query the localization table. This is not ideal and it would certainly be preferable if the Liferay API provided the local service classes for that table.