Hello All, When org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.TableAlias is used for abstract class (has extent classes declared, but not mapped to any table itself) it may initialized with tableName=null. This situation later produces a problem, because tableName is being used for TableAlias identity (equals/hashcode):
java.lang.NullPointerException at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement$TableAlias.hashCode(SqlQueryStatement.java:1977) at java.util.HashMap.hash(HashMap.java:261) at java.util.HashMap.put(HashMap.java:379) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.splitCriteria(SqlQueryStatement.java:1686) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.<init>(SqlQueryStatement.java:132) at org.apache.ojb.broker.accesslayer.sql.SqlSelectStatement.<init>(SqlSelectStatement.java:64) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.getSubQuerySQL(SqlQueryStatement.java:976) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendSubQuery(SqlQueryStatement.java:957) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendParameter(SqlQueryStatement.java:942) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendInCriteria(SqlQueryStatement.java:770) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendCriteria(SqlQueryStatement.java:849) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendSQLClause(SqlQueryStatement.java:922) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.asSQLStatement(SqlQueryStatement.java:671) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendClause(SqlQueryStatement.java:592) at org.apache.ojb.broker.accesslayer.sql.SqlQueryStatement.appendWhereClause(SqlQueryStatement.java:544) at org.apache.ojb.broker.accesslayer.sql.SqlSelectStatement.getStatement(SqlSelectStatement.java:243) at org.apache.ojb.broker.accesslayer.sql.SqlGeneratorDefaultImpl.getPreparedSelectStatement(SqlGeneratorDefaultImpl.java:151) at org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(JdbcAccessImpl.java:305) at org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(RsQueryObject.java:74) at org.apache.ojb.broker.accesslayer.RsIterator.<init>(RsIterator.java:185) at org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(RsIteratorFactoryImpl.java:58) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(PersistenceBrokerImpl.java:1918) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(PersistenceBrokerImpl.java:1493) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java:112) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java:251) at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(QueryReferenceBroker.java:271) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(PersistenceBrokerImpl.java:1367) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java:338) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(DelegatingPersistenceBroker.java:338) Thanks, Andy
