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Rob Lindbloom
Join with DynamicQuery
19 de Dezembro de 2008 14:08
Resposta

Rob Lindbloom

Ranking: New Member

Mensagens: 15

Data de entrada: 16 de Outubro de 2008

Mensagens recentes

I'm trying to do a SQL inner join using DynamicQuery. I can't find too much information on how to do this. I'm trying to join JournalArticle with Ratings or RatingStats. Has anyone implemented this using JournalArticle.findByDynamicQuery()?

Thanks, Rob
Jonas Yuan
RE: Join with DynamicQuery
19 de Dezembro de 2008 14:51
Resposta

Jonas Yuan

Ranking: Liferay Master

Mensagens: 993

Data de entrada: 26 de Abril de 2007

Mensagens recentes

Hi Rob,

Here is a real example -getting most popular articles TOP 10 - abstracted from 1st draft of Chapter 8: Building My Community - Liferay DEV BOOK.

public List<TagsAsset> getMostPopularArticles(String companyId, String groupId, String type, int limit) {
List<TagsAsset> results = Collections.synchronizedList(new ArrayList<TagsAsset>());
DynamicQuery dq0 = DynamicQueryFactoryUtil.forClass(JournalArticle.class, "journalarticle")
.setProjection(ProjectionFactoryUtil.property("resourcePrimKey"))
.add(PropertyFactoryUtil.forName("journalarticle.companyId").eqProperty("tagsasset.companyId"))
.add(PropertyFactoryUtil.forName("journalarticle.groupId").eqProperty("tagsasset.groupId"))
.add(PropertyFactoryUtil.forName("journalarticle.type").eq("article-content"));
DynamicQuery query = DynamicQueryFactoryUtil.forClass(TagsAsset.class, "tagsasset")
.add(PropertyFactoryUtil.forName("tagsasset.classPK").in(dq0))
.addOrder(OrderFactoryUtil.desc("tagsasset.viewCount"));
try{
List<Object> assets = TagsAssetLocalServiceUtil.dynamicQuery(query);
int index = 0;
for (Object obj: assets) {
TagsAsset asset = (TagsAsset)obj;
results.add(asset);
index ++;
if(index == limit) break;
}
}catch (Exception e){
_log.debug("Error: " + e.getMessage());
return results;
}
return results;
}

Enjoy!

Jonas Yuan
Liferay Book: Liferay Portal Enterprise Intranets
Rob Lindbloom
RE: Join with DynamicQuery
19 de Dezembro de 2008 15:25
Resposta

Rob Lindbloom

Ranking: New Member

Mensagens: 15

Data de entrada: 16 de Outubro de 2008

Mensagens recentes

Jonus... thanks for your quick reply on a Friday no less. I'll give this a try!

Gratefully, Rob
Ruben Aguilera
RE: Join with DynamicQuery
10 de Julho de 2009 20:21
Resposta

Ruben Aguilera

Ranking: Junior Member

Mensagens: 47

Data de entrada: 25 de Fevereiro de 2009

Mensagens recentes

Hi Jonas,

First, congratulations for your new book, I have it and I think that's fantastic.

I was thinking if you could give me an example about join three tables with a dynamicquery. Specifically, I want to know how I make a join with TagsAsset, TagsEntry and TagsAssets_TagsEntries tables using a dynamicquery like example in first comment but with these three tables.

I need that to finish an important portlet in my job. Thank you very much.
Ezequiel Turovetzky
RE: Join with DynamicQuery
29 de Janeiro de 2013 15:56
Resposta

Ezequiel Turovetzky

Ranking: New Member

Mensagens: 12

Data de entrada: 4 de Julho de 2012

Mensagens recentes

Thanks a lot for that snippet!
Sikendar Kumar
Unable to see tags for guest users in liferay 6.2
10 de Outubro de 2017 03:48
Resposta

Sikendar Kumar

Ranking: New Member

Mensagens: 18

Data de entrada: 2 de Setembro de 2015

Mensagens recentes

Hi jonas,

can you please help in below issue.

I have implemented search functionality , in that i have implemented such a way so that when user select tag and click on search button they can able to see all document which all document associated with that tag but its not working for the Guest user.can any one help me out what needs to do for this.