JPA named query match a list of tuples in IN clause - sql

Question

spring data jpa 1.4.3 with Oracle 11g.
I have an entity like this:
class LinkRecord {
String value;
int linkType;
...
}
I am using (value, linkType) as a composite index.
For a given list of (v, t) tuples, we need to select all the records in the DB so that value = v, linkType = t.
Basically, I want to build this query:
SELECT * FROM LINK_RECORD WHERE (VALUE, LINK_TYPE) IN (('value1', 0), ('value2', 25), ...)
where the list in the IN clause is passed in as a param.
Since we're working with a large volume of data, it would be very undesirable to query for the tuples one by one.
In my repository I've tried this:
#Query("select r from LinkRecord r where (r.value, r.linkType) in :keys")
List<LinkRecord> findByValueAndType(#Param("keys")List<List<Object>> keys);
where keys is a list of (lists of length 2). This gets me ORA_00920: invalid relational operator.
Is there any way to make this work using a named query? Or do I have to resort to native sql?

Answer 1

The answer is too late, but maybe some1 else has the same problem. This is one of my working examples. Here I need to search for all entries that match a given composite key:
The entity....
#Entity
#NamedQueries({
#NamedQuery(name = "Article.findByIdAndAccessId", query = "SELECT a FROM Article a WHERE a.articlePk IN (:articlePks) ORDER BY a.articlePk.article")
})
#Table(name = "ARTICLE")
public class Article implements Serializable
{
private static final long serialVersionUID = 1L;
#EmbeddedId
private ArticlePk articlePk = new ArticlePk();
#Column(name = "art_amount")
private Float amount;
#Column(name = "art_unit")
private String unit;
public Article()
{
}
//more code
}
The PK class....
#Embeddable
public class ArticlePk implements Serializable
{
private static final long serialVersionUID = 1L;
#Column(name = "art_article")
private String article;
#Column(name = "art_acc_identifier")
private Long identifier;
public ArticlePk()
{
}
public ArticlePk(String article, Long identifier)
{
this.article = article;
this.identifier = identifier;
}
#Override
public boolean equals(Object other)
{
if (this == other)
{
return true;
}
if (!(other instanceof ArticlePk))
{
return false;
}
ArticlePk castOther = (ArticlePk)other;
return this.article.equals(castOther.article) && this.identifier.equals(castOther.identifier);
}
#Override
public int hashCode()
{
final int prime = 31;
int hash = 17;
hash = hash * prime + this.article.hashCode();
hash = hash * prime + this.identifier.hashCode();
return hash;
}
//more code
}
Invocation by....
TypedQuery<Article> queryArticle = entityManager.createNamedQuery("Article.findByIdAndAccessId", Article.class);
queryArticle.setParameter("articlePks", articlePks);
List<Article> articles = queryArticle.getResultList();
where....
articlePks is List<ArticlePk>.