Re: MariaDB LocalDate field casting issue

Andrew Willerding Sun, 30 Apr 2017 08:45:36 -0700

Thank you! I had seen a reference to this library in this list for Ibelieve was M3 release but I skipped over it as I mistakenly thought itwas baked into the later releases as I couldn't find a reference toadding this in the Cayenne guide as a requirement for Java8 or later.


On 30/04/17 04:17 AM, Andrus Adamchik wrote:

Hi Andrew,

You will need to add "cayenne-java8" library to your app. E.g. (if you are 
using Maven):

<dependency>
    <groupId>org.apache.cayenne</groupId>
    <artifactId>cayenne-java8</artifactId>
    <version>4.0.M5</version>
</dependency>

It contains support for java.time classes. Without it Cayenne doesn't know how 
to handle LocalDate, and the default approach is to serialize it to a byte[] 
(which is of course wrong, hence the error).

Andrus

On Apr 30, 2017, at 12:07 AM, Andrew Willerding <[email protected]> 
wrote:

Hi,

I'm having an issue using a LocalDate field in my MariaDB table.

I'm using mysql  Ver 15.1 Distrib 10.0.30-MariaDB, for debian-linux-gnu 
(x86_64) using readline 5.2

The table is defined as the following...

<?xml version="1.0" encoding="utf-8"?>
<obj-attribute name="defaultTimeZone" type="java.lang.String" 
db-attribute-path="defaultTimeZone"/>
<obj-attribute name="expireDate" type="java.time.LocalDate" 
db-attribute-path="expireDate"/>
<obj-attribute name="maintenanceDate" type="java.time.LocalDate" 
db-attribute-path="maintenanceDate"/>
<obj-attribute name="name" type="java.lang.String" db-attribute-path="name"/>
<obj-attribute name="status" type="short" db-attribute-path="statusID"/>

The code generating the error is the following ...

            Client client = context.newObject(Client.class);
            client.setExpireDate(LocalDate.now());
            client.setMaintenanceDate(LocalDate.now());
client.setDefaultTimeZone(TimeZone.getDefault().getID());
            client.setName(CLIENT_TEMPLATE_NAME);
client.setStatus(EnumSimpleStatus.STATUS_INACTIVE.toShort());
            context.commitChanges();

Upon execution of this code I'm getting

java.sql.SQLException: Cannot convert class [B to SQL type requested due to 
java.lang.ClassCastException - [B cannot be cast to java.util.Date

I'm not sure why I'm getting the casting error.  Is there some underlying 
version compatibility?

Thanks,

Andrew

The full trace is as follows...

2017-04-29,16:56:45:263,INFO 
,[http-nio-8080-exec-610],org.apache.cayenne.log.CommonsJdbcEventLogger,INSERT 
INTO Client (contactID, defaultTimeZone, expireDate, id, maintenanceDate, name, 
statusID) VALUES (?, ?, ?, ?, ?, ?, ?)
2017-04-29,16:56:45:264,INFO 
,[http-nio-8080-exec-610],org.apache.cayenne.log.CommonsJdbcEventLogger,[batch bind: 
1->contactID:NULL, 2->defaultTimeZone:'America/Toronto', 3->expireDate:2017-04-29, 
4->id:200, 5->maintenanceDate:2017-04-29, 6->name:'Template', 7->statusID:1]
2017-04-29,16:56:45:273,INFO 
,[http-nio-8080-exec-610],org.apache.cayenne.log.CommonsJdbcEventLogger,*** 
error.
java.sql.SQLException: Cannot convert class [B to SQL type requested due to 
java.lang.ClassCastException - [B cannot be cast to java.util.Date
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:897) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:886) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:860) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at com.mysql.jdbc.PreparedStatement.setObject(PreparedStatement.java:3761) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at 
com.mysql.jdbc.JDBC42PreparedStatement.setObject(JDBC42PreparedStatement.java:99)
 ~[mysql-connector-java-5.1.41.jar:5.1.41]
    at com.mysql.jdbc.PreparedStatement.setObject(PreparedStatement.java:3580) 
~[mysql-connector-java-5.1.41.jar:5.1.41]
    at 
com.mysql.jdbc.JDBC42PreparedStatement.setObject(JDBC42PreparedStatement.java:83)
 ~[mysql-connector-java-5.1.41.jar:5.1.41]
    at 
org.apache.cayenne.access.types.ByteArrayType.setJdbcObject(ByteArrayType.java:160)
 ~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.types.ByteArrayType.setJdbcObject(ByteArrayType.java:40)
 ~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.types.ExtendedTypeDecorator.setJdbcObject(ExtendedTypeDecorator.java:63)
 ~[cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.dba.JdbcAdapter.bindParameter(JdbcAdapter.java:548) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.dba.mysql.MySQLAdapter.bindParameter(MySQLAdapter.java:214) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.dba.AutoAdapter.bindParameter(AutoAdapter.java:204) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.access.jdbc.BatchAction.bind(BatchAction.java:57) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.jdbc.BatchAction.runAsBatch(BatchAction.java:114) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.jdbc.BatchAction.performAction(BatchAction.java:85) 
~[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:97)
 ~[cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:293) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataDomainFlushAction.runQueries(DataDomainFlushAction.java:239)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:155)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:629) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataDomain.onSyncNoFilters(DataDomain.java:598) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataDomain$DataDomainSyncFilterChain.onSync(DataDomain.java:746)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.TransactionFilter$1.perform(TransactionFilter.java:73) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.TransactionFilter$1.perform(TransactionFilter.java:70) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:87)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.DefaultTransactionManager.performInLocalTransaction(DefaultTransactionManager.java:59)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:52)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:40)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.tx.TransactionFilter.onSync(TransactionFilter.java:70) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataDomain$DataDomainSyncFilterChain.onSync(DataDomain.java:746)
 [cayenne-server-4.0.M5.jar:4.0.M5]
    at org.apache.cayenne.access.DataDomain.onSync(DataDomain.java:585) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:742) 
[cayenne-server-4.0.M5.jar:4.0.M5]
    at 
org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:691) 
[cayenne-server-4.0.M5.jar:4.0.M5]


<?xml version="1.0" encoding="utf-8"?>
<obj-attribute name="defaultTimeZone" type="java.lang.String" 
db-attribute-path="defaultTimeZone"/>
<obj-attribute name="expireDate" type="java.time.LocalDate" 
db-attribute-path="expireDate"/>
<obj-attribute name="maintenanceDate" type="java.time.LocalDate" 
db-attribute-path="maintenanceDate"/>
<obj-attribute name="name" type="java.lang.String" db-attribute-path="name"/>
<obj-attribute name="status" type="short" db-attribute-path="statusID"/>

Re: MariaDB LocalDate field casting issue

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