addPathClass in QueryByCriteria does not consider inheritance
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Key: OJB-62
URL: http://issues.apache.org/jira/browse/OJB-62
Project: OJB
Type: Bug
Components: PB-API
Environment: postgresql, ojb 1.0.3
Reporter: Kirill Petrov
I guess there is a bug in the addPathClass method. Orirginally I posted it on
the mailing list and then you requested me to submit a new bug on this website:
here is the code that I have
public static Collection findModelsByAuthorsName(String aName) {
PersistenceBroker broker =
PersistenceBrokerFactory.defaultPersistenceBroker();
try{
Criteria crit = new Criteria();
crit.addLike("sources.author", aName);
QueryByCriteria query = new QueryByCriteria(Model.class, crit, true);
query.addPathClass("sources", Citation.class);
return broker.getCollectionByQuery(query);
} finally {
broker.close();
}
}
when I run it I get an error (below). The problem is that Citation is a
superclass that has a number of classes that implement it. If instead of
Citation I use OJBCitation (which is not extended by any class) then everything
works fine.
Here is the definition of Citation:
here is what I have:
<class-descriptor class="edu.uci.ics.sigmoid.Citation">
<extent-class class-ref="edu.uci.ics.sigmoid.OJBCitation" />
<extent-class class-ref="edu.uci.ics.sigmoid.Article" />
<extent-class class-ref="edu.uci.ics.sigmoid.Book" />
<extent-class class-ref="edu.uci.ics.sigmoid.Booklet" />
<extent-class class-ref="edu.uci.ics.sigmoid.Unpublished" />
<extent-class class-ref="edu.uci.ics.sigmoid.TechReport" />
<extent-class class-ref="edu.uci.ics.sigmoid.Proceedings" />
<extent-class class-ref="edu.uci.ics.sigmoid.PhDThesis" />
<extent-class class-ref="edu.uci.ics.sigmoid.MiscCitation" />
<extent-class class-ref="edu.uci.ics.sigmoid.MastersThesis" />
<extent-class class-ref="edu.uci.ics.sigmoid.Manual" />
<extent-class class-ref="edu.uci.ics.sigmoid.InProceedings" />
<extent-class class-ref="edu.uci.ics.sigmoid.InCollection" />
<extent-class class-ref="edu.uci.ics.sigmoid.InBook" />
<extent-class class-ref="edu.uci.ics.sigmoid.Conference" />
</class-descriptor>
Here is the exception I get.
[org.apache.ojb.broker.accesslayer.sql.SqlGeneratorDefaultImpl] DEBUG:
createTableAlias2: path: sources* tableAlias: model_sources_knowledge_source A1
[org.apache.ojb.broker.accesslayer.sql.SqlGeneratorDefaultImpl] DEBUG: Result
of getTableAlias(): null A2
[org.apache.ojb.broker.accesslayer.sql.SqlGeneratorDefaultImpl] DEBUG:
SQL:SELECT DISTINCT
A0._id,A0.name,A0.extended_description,A0.license_id,A0.unique_dbid,A0.comment
FR\
OM model A0 INNER JOIN (model_sources_knowledge_source A1 INNER JOIN null A2 ON
A1.knowledge_source_id=A2._id) ON A0._id=A1.model_id WHERE author LIKE ?
[org.apache.ojb.broker.accesslayer.JdbcAccessImpl] ERROR: SQLException during
the execution of the query (for edu.uci.ics.sigmoid.OJBModel): ERROR: syntax
error at or near \
"null"
ERROR: syntax error at or near "null"
java.sql.SQLException: ERROR: syntax error at or near "null"
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1471)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1256)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:175)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:389)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:330)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:240)
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