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https://issues.apache.org/jira/browse/OPENJPA-971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Adam Hardy updated OPENJPA-971:
-------------------------------
Attachment: mavenproject.zip
if you're not using maven, a list of jar dependencies is given in
dependencies.txt
To work with different databases, comment or uncomment the relevant strings at
the top of the unit test class, which hold the jdbc url, username, dictionary
class etc.
> Time handling in Dates
> ----------------------
>
> Key: OPENJPA-971
> URL: https://issues.apache.org/jira/browse/OPENJPA-971
> Project: OpenJPA
> Issue Type: Bug
> Affects Versions: 1.2.0
> Environment: Linux
> Java 1.6.0_12
> MySQL, Hypersonic
> Reporter: Adam Hardy
> Attachments: mavenproject.zip
>
>
> I have what looks like a bug in time handling, that probably stems from the
> database Dictionaries. My testing shows it occurs with MySQL and Derby, but
> not for PostgreSQL, H2 or Hypersonic (using latest GA versions of Java,
> OpenJPA & JDBC drivers).
> If I save an entity with this set-up, I see incorrect handling of dates:
> class MyEntity
> {
> ...
> private java.util.Date opening;
> ...
> }
> and:
> <entity>
> <attributes>
> <basic name="opening">
> <column name="OPENING"/>
> <temporal>TIME</temporal>
> </basic>
> ...
> and:
> create table MY_ENTITY (
> ...
> OPENING time not null,
> ...
> In my test I assign a new value to 'opening', save the entity and retrieve it
> from the database again. Then I compare the date on the retrieved entity
> against the value originally assigned, and I get this result:
> with Derby: original Calendar.HOUR_OF_DAY == 9, retrieved value = 10
> (probably due to timezone offset handling)
> with MySQL: original Calendar.YEAR == 1970, retrieved value = 1969
> With MySQL it could be declared irrelevant since the value comes from a Time
> database type and the Java comparisons should blank out or ignore non-time
> Date values. However the MySQLDictionary refuses to read in Times in the
> HH:MM:SS format when zero 00:00:00 - it causes the following exception:
> <openjpa-1.2.0-r422266:683325 nonfatal general error>
> org.apache.openjpa.persistence.PersistenceException: Cannot convert value
> '00:00:00' from column 9 to TIMESTAMP.
> at
> org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4238)
> at
> org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4203)
> at
> org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:102)
> at
> org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:88)
> at
> org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:64)
> at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:282)
> at
> org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:111)
> at
> org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
> at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:894)
> at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:852)
> at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:774)
> at
> org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:917)
> at
> org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:278)
> at
> org.apache.openjpa.jdbc.sql.SelectImpl$SelectResult.load(SelectImpl.java:2391)
> at
> org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:272)
> at
> org.apache.openjpa.jdbc.kernel.InstanceResultObjectProvider.getResultObject(InstanceResultObjectProvider.java:59)
> at org.apache.openjpa.kernel.QueryImpl.singleResult(QueryImpl.java:1294)
> at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1221)
> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:990)
> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:805)
> at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:775)
> at
> org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:533)
> at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:251)
> at
> org.apache.openjpa.persistence.QueryImpl.getSingleResult(QueryImpl.java:316)
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