Apple

On Aug 7, 2016, at 3:12 PM, anon <email@hidden> wrote:

Still fighting with Direct2Web and the Movie EOModel.

Migration is failing with a NPE that I could trace to the ERTag not having a columnName and therefore not externalType for its id attribute. As I have been watching videos and noticed that this EOModel is always being used, I assume I am doing something wrong or my properties file is not correct.

As you can see in this EOEntity, the second EOAttribute is missing something:

<EOEntity MovieTag
    <EOAttribute item_movieID
        columnName : 'item_MOVIE_ID'
        name : 'item_movieID'
        externalType : 'integer'
    >
    <EOAttribute tag_id
        columnName : 'tag_null'
        name : 'tag_id'
    >
    <EORelationship ERTag
        joinSemantic : 'EOInnerJoin'
        isToMany : 'N'
        joins : '({sourceAttribute = "tag_id"; destinationAttribute = "id"; })'
        name : 'ERTag'
        destination : 'ERTag'
        isMandatory : 'Y'
    >
    <EORelationship Movie
        joinSemantic : 'EOInnerJoin'
        isToMany : 'N'
        joins : '({sourceAttribute = "item_movieID"; destinationAttribute = "movieID"; })'
        name : 'Movie'
        destination : 'Movie'
        isMandatory : 'Y'
    >

Caused by: java.lang.NullPointerException
    at com.webobjects.jdbcadaptor.JDBCExpression.columnTypeStringForAttribute(JDBCExpression.java:160)
    at com.webobjects.eoaccess.synchronization.EOSchemaSynchronizationFactory._columnCreationClauseForAttribute(EOSchemaSynchronizationFactory.java:2124)
    at com.webobjects.eoaccess.synchronization.EOSchemaSynchronizationFactory.createTableStatementsForEntityGroup(EOSchemaSynchronizationFactory.java:350)
    at er.taggable.migrations.ERTaggableEntity0.upgrade(ERTaggableEntity0.java:103)
    at er.taggable.migrations.ERTaggableEntity0.upgrade(ERTaggableEntity0.java:75)
    at er.extensions.migration.ERXMigrationDatabase$Migration.upgrade(ERXMigrationDatabase.java:440)
    at er.extensions.migration.ERXMigrator$ERXMigrationAction.doPerform(ERXMigrator.java:481)

Thanks again.

On 06.08.2016 21:39, Theodore Petrosky wrote:

I had the same problem myself. My ‘solution’ was to switch the database to postgresql. I realize this doesn’t address the problem, but sometimes you just have to get work done.

Ted

On Aug 6, 2016, at 3:19 PM, anon <email@hidden> wrote:

Hello,
I have decided that I was going to spend some time learning D2W. I have been trying to get the ERMovies example to work, but the h2 database seems to not be started when the application is run. Am I supposed to start the jdbc:h2:file myself in the code or is the example supposed to start the database automatically? Here is the error that I get:

failed to open database channel. Check your connection dictionary, and ensure your database is correctly configured.

Thanks,

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References:
	>Direct2Web Examples (From: anon <email@hidden>)
	>Re: Direct2Web Examples (From: Theodore Petrosky <email@hidden>)
	>Re: Direct2Web Examples (From: anon <email@hidden>)