[Hibernate-JIRA] Created: (HHH-2218) java.util.ConcurrentModificationException at org.hibernate.pretty.Printer.toString(Printer.java:90)
by rm (JIRA)
java.util.ConcurrentModificationException at org.hibernate.pretty.Printer.toString(Printer.java:90)
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Key: HHH-2218
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2218
Project: Hibernate3
Type: Bug
Components: core
Versions: 3.1.3
Environment: Hibernate 3.1.3, spring 2.1.8 on Jboss 4.0.2 with Oracle 10g
Reporter: rm
Similar issues have been logged since May 2005 and have been marked as 'Fixed' by Gavin especially for Session.toString() related cases. However, I am also facing similar issues in Printer.toString()...
The saving grace is that when I set the debug level to INFO, the problem goes away...
Am copy/pasting the relevent stacktrace...I have also debugged this on eclipse and the exact location is the call to "new Printer(....)" in AbstractFlushingEventListener.java
java.util.ConcurrentModificationException
10:07:28,421 INFO [STDOUT] at java.util.HashMap$HashIterator.nextEntry(HashMap.java:787)
10:07:28,421 INFO [STDOUT] at java.util.HashMap$ValueIterator.next(HashMap.java:817)
10:07:28,421 INFO [STDOUT] at org.hibernate.pretty.Printer.toString(Printer.java:90)
10:07:28,421 INFO [STDOUT] at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:97)
10:07:28,421 INFO [STDOUT] at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:35)
10:07:28,421 INFO [STDOUT] at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:954)
10:07:28,421 INFO [STDOUT] at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1099)
10:07:28,421 INFO [STDOUT] at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
PS: This is my first attempt at logging issues at JIRA. Kindly point out any deficiencies or irregularities in this attempt.
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11 years, 9 months
[Hibernate-JIRA] Created: (HHH-2744) QueryException raised for valid SQL query - problems with aliases parsing
by Michal Jastak (JIRA)
QueryException raised for valid SQL query - problems with aliases parsing
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Key: HHH-2744
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2744
Project: Hibernate3
Issue Type: Bug
Affects Versions: 3.2.1
Environment: Tomcat 5.5, Hibernate Annotations 3.3.0 ga
Reporter: Michal Jastak
SQLQuery parser dose not parse queries correctly.
Trying to invoke:
session.createSQLQuery("select foo from bar where foo like '{%'");
ends with:
rg.hibernate.QueryException: Unmatched braces for alias path [select foo from bar where foo like '{%']
at org.hibernate.loader.custom.sql.SQLQueryParser.substituteBrackets(SQLQueryParser.java:74)
at org.hibernate.loader.custom.sql.SQLQueryParser.process(SQLQueryParser.java:51)
at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:110)
at org.hibernate.engine.query.NativeSQLQueryPlan.<init>(NativeSQLQueryPlan.java:43)
at org.hibernate.engine.query.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:114)
at org.hibernate.impl.AbstractSessionImpl.getNativeSQLQueryPlan(AbstractSessionImpl.java:137)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
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11 years, 9 months
[Hibernate-JIRA] Created: (HHH-2031) Add functions to Dialect that can disable use of schema and catalog parts -- for HSQLDB support
by Brian Holmes (JIRA)
Add functions to Dialect that can disable use of schema and catalog parts -- for HSQLDB support
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Key: HHH-2031
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2031
Project: Hibernate3
Type: Patch
Components: core
Versions: 3.1.3
Environment: This patch is against r9668 of /tags/v313/Hibernate3.
Reporter: Brian Holmes
Attachments: hibernate3-v313-support_schema_catalog_names.patch
HSQLDB does not support the use of three part names, that is Tables with schema and catalog parts.
This patch adds two functions to Dialect: supportsSchemaNames() and supportsCatalogNames(). Table.getQualifiedName() checks these values to decide whether to use or ignore the schema and catalog parts.
By default these are enabled in Dialect. This patch only disables their use in HSQLDialect.
This change is necessary for people who normally use Schema and Catalog names for access their primary database, but also use HSQLDB for Unit Testing. Without it, HSQLDB is unusable for Unit Testing because it fails on use of any catalog or schema names.
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11 years, 10 months
[Hibernate-JIRA] Created: (HHH-2448) Generate identical column aliases among cluster
by Loïc LEFEVRE (JIRA)
Generate identical column aliases among cluster
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Key: HHH-2448
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2448
Project: Hibernate3
Type: Improvement
Components: query-sql
Versions: 3.2.2
Environment: Hibernate version: 3.2.2, 2.1.8
Database: Oracle 9.2.0.8
Reporter: Loïc LEFEVRE
Attachments: report_1.txt, report_2.txt
Among our weblogic cluster (12 instances), we can see that a query can have different column aliases.
Although all seems correct, when regarding database reports like StatsPack or Spotlight we can see that because of these different aliases, the reports are wrong. Indeed, a resource consuming query can see its associated report properties (cpu usage, buffer gets, number of executions...) divided by the number of weblogic instances of our cluster (i.e. divided by 12) thus preventing us to pinpoint the queries to look at.
On a 3 instances cluster, we can see this report:
REPORT#1: one statement with a poor number of buffer gets/execution is reported splitted in 3, see the alias generated for column DTO.CREATION_DATE
for example
On a 4 instances cluster, we can see this report:
REPORT#2: one statement responsible of the latch free/cache buffers chains wait events splitted in 4, note the column alias generated fordeffcashcy0_.BEST_EXPECTED_CY
More than confusing the DBAs about the same query with n different "faces", our reports don't show us all the queries to look at: indeed, in our "Top 50 queries", a lot of them are duplicates! Also the memory required in the SGA to store the queries, the execution plan and so on is increased...
Finally, although the column aliases can have up to 30 characters under Oracle, the limit is set to 10, why?
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11 years, 10 months
[Hibernate-JIRA] Created: (HHH-2308) Adjusting the Outer Join Predicate using Criteria Query
by Ben Grant (JIRA)
Adjusting the Outer Join Predicate using Criteria Query
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Key: HHH-2308
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2308
Project: Hibernate3
Type: New Feature
Components: query-criteria
Versions: 3.2.1
Environment: Linux Using MS SQLServer
Reporter: Ben Grant
I have two tables
Table A
||Col_1||Col_2||
|London| UK |
|Liverpool| UK |
| New York | USA |
Table B
||Col_1||Col_2|| Col_3||
| UK | Europe | 0
| USA | Americas | 1
Using the Criteria class, Restriction Class and FetchMode, Hibernate manages to create a query that looks like this
select distinct top 2000
this_.Col_1 as y0_, TableB3_.Col2 as y1_
from TableA this_
left outer join TableB TableB3_ on this_.Col_2= TableB3_.Col_1
where TableB3_.Col_3=1
When really i need the query to be like this
select distinct top 2000
this_.Col_1 as y0_, TableB3_.Col2 as y1_
from TableA this_
left outer join TableB TableB3_ on this_.Col_2= TableB3_.Col_1 AND TableB3_.Col_3=1
currently their isn't any know way for hibernate to adjust or apply filters within the join clause.
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11 years, 10 months