Re: SQL Error on fetch
Re: SQL Error on fetch
- Subject: Re: SQL Error on fetch
- From: Tim W via Webobjects-dev <email@hidden>
- Date: Mon, 10 Feb 2020 18:40:58 -0800
Hi Gino:
Were you not specifying the database driver class in Properties before this?
Driver class and PlugIn class definitely should always be specified.
Tim
> On Feb 10, 2020, at 5:37 AM, Gino Pacitti via Webobjects-dev
> <email@hidden> wrote:
>
> What seems to have fixed is adding this in my properties file for the
> connection dictionary:
>
> mymodel.DBDriver = com.mysql.cj.jdbc.Driver
>
> I installed the latest JDBC adaptor from MySQL and updated the Drive info…
>
> The last few days I have had no issues…
>
> Gino
>
>> On 7 Feb 2020, at 17:36, Tim W <email@hidden> wrote:
>>
>> Hi Gino:
>>
>> I think I might have seen this error when the MySQLPlugin is not in the app
>> classpath? In other words, some SQL that the frameworks are trying to build
>> for a transaction are subsequently not being customized properly for MySQL
>> before being sent to the DB.
>>
>> The errors makes sense in that context. First, there is an attempt to build
>> the SQL string, then com.mysql.jdbc.PreparedStatement.executeInternal
>> experiences an error parsing what has been sent.
>>
>> Check it out.
>>
>> Tim
>>
>>> On Feb 4, 2020, at 1:00 PM, Gino Pacitti via Webobjects-dev
>>> <email@hidden> wrote:
>>>
>>> Hi
>>> Has anyone encountered this sort of error before?
>>>
>>> It does not happen all the time but just on occasion.
>>>
>>> mysql Ver 14.14 Distrib 5.7.28, for Linux (x86_64) using EditLine wrapper
>>>
>>> Java 8
>>>
>>> mysql-connector-java-8.0.19.jar
>>>
>>> This is my connection URL
>>> jdbc:mysql://127.0.0.1/<DATABASE>_UTF_8?capitalizeTypeNames=true&useUnicode=true&characterEncoding=UTF-8&characterSetResults=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&sendFractionalSeconds=false&autoReconnect=true&useServerPrepStmts=false&rewriteBatchedStatements=true&useCompression=true
>>>
>>> And here is the error
>>> Unexpected exception encountered during
>>> query.java.lang.NullPointerExceptionat
>>> com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
>>> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:898)
>>> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:887)
>>> at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:861)
>>> at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2532)
>>> at
>>> com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1903)
>>> at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1242)
>>> at
>>> com.webobjects.jdbcadaptor.JDBCChannel._bindInputVariablesWithBindingsAndExecute(JDBCChannel.java:265)
>>> at
>>> com.webobjects.jdbcadaptor.JDBCChannel._evaluateExpression(JDBCChannel.java:337)
>>> at
>>> com.webobjects.jdbcadaptor.JDBCChannel.evaluateExpression(JDBCChannel.java:296)
>>> at
>>> er.extensions.jdbc.ERXJDBCAdaptor$Channel.evaluateExpression(ERXJDBCAdaptor.java:283)
>>> at
>>> com.webobjects.jdbcadaptor.JDBCChannel.selectAttributes(JDBCChannel.java:220)
>>> at
>>> er.extensions.jdbc.ERXJDBCAdaptor$Channel.selectAttributes(ERXJDBCAdaptor.java:200)
>>> at
>>> com.webobjects.eoaccess.EODatabaseChannel._selectWithFetchSpecificationEditingContext(EODatabaseChannel.java:897)
>>> at
>>> com.webobjects.eoaccess.EODatabaseChannel.selectObjectsWithFetchSpecification(EODatabaseChannel.java:234)
>>> at
>>> com.webobjects.eoaccess.EODatabaseContext._objectsWithFetchSpecificationEditingContext(EODatabaseContext.java:3055)
>>> at
>>> com.webobjects.eoaccess.EODatabaseContext.objectsWithFetchSpecification(EODatabaseContext.java:3195)
>>> at
>>> com.webobjects.eocontrol.EOObjectStoreCoordinator.objectsWithFetchSpecification(EOObjectStoreCoordinator.java:488)
>>> at
>>> com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4069)
>>> at er.extensions.eof.ERXEC.objectsWithFetchSpecification(ERXEC.java:1307)
>>> at
>>> com.webobjects.eocontrol.EOEditingContext.objectsWithFetchSpecification(EOEditingContext.java:4444)
>>> at
>>> er.extensions.eof.ERXFetchSpecification.fetchObjects(ERXFetchSpecification.java:155)
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