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From "catalina wei" <catalina....@gmail.com>
Subject Re: [jira] Updated: (OPENJPA-573) JPQL: The combination LIKE ESCAPE does not accept parameters
Date Thu, 17 Apr 2008 00:13:52 GMT
Hi Georgi,
This is a problem in
openjpa-kernel/src/main/java/org/apache/openjpa/kernel/JPQL.jjt
An easy fix is on this line:
input_parameter() | string_literal()

changed the above line to add parenthesis around it as the following, it
will get pass parser error.
(input_parameter() | string_literal())

void pattern_value() #PATTERNVALUE : { }
{
//  originally was:  input_parameter() | string_literal(), and changed to
the following:
    (input_parameter() | string_literal())
    [(<ESCAPE> escape_character() #ESCAPECHARACTER)]
}

Could you give it a try ?
You will need to run "mvn clean install" or "mvn compile" to regenerate the
parser.

I tried this fix, and for JPQL query: select c from Customer c where
c.nameLIKE ?1 ESCAPE '|'] with parameters: {1=%|_%}
I  get this SQL
  SELECT  ...   FROM TCUSTOMER t0 WHERE (t0.name LIKE ? ESCAPE '|')
[params=(String) %|_%]

Catalina
On Wed, Apr 16, 2008 at 4:03 PM, Georgi Naplatanov (JIRA) <jira@apache.org>
wrote:

>
>     [
> https://issues.apache.org/jira/browse/OPENJPA-573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel]
>
> Georgi Naplatanov updated OPENJPA-573:
> --------------------------------------
>
>        Fix Version/s:     (was: 1.1.0)
>    Affects Version/s: 1.1.0
>
> > JPQL: The combination LIKE ESCAPE does not accept parameters
> > ------------------------------------------------------------
> >
> >                 Key: OPENJPA-573
> >                 URL: https://issues.apache.org/jira/browse/OPENJPA-573
> >             Project: OpenJPA
> >          Issue Type: Bug
> >    Affects Versions: 1.0.2, 1.1.0
> >         Environment: SUN JDK 1.6.0.6 (AMD64) for Linux
> >            Reporter: Georgi Naplatanov
> >
> > If i use constants like this :
> > SELECT object FROM MyObject object WHERE object.path LIKE '%|_%' ESCAPE
> '|'
> > all is ok, but if I want to use parameters - exception is thrown.
> > Example:
> > @Entity
> > @Table(name="simple_object")
> > public class MySimpleObject {
> >       @Id
> >       String Id ;
> >
> >       @Basic
> >       @Column(name="value", nullable=false, length=36)
> >       String value  ;
> > .....................
> > .......................
> > EntityManager em = emf.createEntityManager() ;
> > Query q = em.createQuery("SELECT x FROM MySimpleObject x WHERE x.value
> LIKE ?1 ESCAPE '|'") ;
> > q.setParameter(1, "%|_%") ;
> > List<MySimpleObject> res = q.getResultList() ;
> > Exception in thread "main" <openjpa-1.1.0-SNAPSHOT-r422266:648359
> nonfatal user error> org.apache.openjpa.persistence.ArgumentException:
> Encountered "ESCAPE" at character 54, but expected: ["AND", "GROUP",
> "HAVING", "OR", "ORDER", <EOF>].
> >       at
> org.apache.openjpa.kernel.jpql.JPQL.generateParseException(JPQL.java:9499)
> >       at
> org.apache.openjpa.kernel.jpql.JPQL.jj_consume_token(JPQL.java:9376)
> >       at org.apache.openjpa.kernel.jpql.JPQL.parseQuery(JPQL.java:75)
> >       at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.parse(JPQLExpressionBuilder.java:1733)
> >       at
> org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.<init>(JPQLExpressionBuilder.java:1720)
> >       at
> org.apache.openjpa.kernel.jpql.JPQLParser.parse(JPQLParser.java:48)
> >       at
> org.apache.openjpa.kernel.ExpressionStoreQuery.newCompilation(ExpressionStoreQuery.java:149)
> >       at
> org.apache.openjpa.datacache.QueryCacheStoreQuery.newCompilation(QueryCacheStoreQuery.java:239)
> >       at
> org.apache.openjpa.kernel.QueryImpl.newCompilation(QueryImpl.java:656)
> >       at
> org.apache.openjpa.kernel.QueryImpl.compilationFromCache(QueryImpl.java:638)
> >       at
> org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:604)
> >       at
> org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:666)
> >       at
> org.apache.openjpa.kernel.QueryImpl.getOperation(QueryImpl.java:1486)
> >       at
> org.apache.openjpa.kernel.DelegatingQuery.getOperation(DelegatingQuery.java:123)
> >       at
> org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:227)
> >       at
> org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:277)
> >       at Tester.testEscape(Tester.java:75)
> >       at Tester.main(Tester.java:93)
>
> --
> This message is automatically generated by JIRA.
> -
> You can reply to this email to add a comment to the issue online.
>
>

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