[jira] Closed: (CAY-1117) Class Cast Exception in SQLServerMergerFactory from AutoAdapter to SQLServerAdapter

From: Tore Halset (JIRA) ("Tore)
Date: Wed Oct 08 2008 - 07:51:12 EDT

  • Next message: Tore Halset (JIRA): "[jira] Resolved: (CAY-1117) Class Cast Exception in SQLServerMergerFactory from AutoAdapter to SQLServerAdapter"

         [ https://issues.apache.org/cayenne/browse/CAY-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

    Tore Halset closed CAY-1117.
    ----------------------------

        Assignee: Tore Halset (was: Andrus Adamchik)

    > Class Cast Exception in SQLServerMergerFactory from AutoAdapter to SQLServerAdapter
    > -----------------------------------------------------------------------------------
    >
    > Key: CAY-1117
    > URL: https://issues.apache.org/cayenne/browse/CAY-1117
    > Project: Cayenne
    > Issue Type: Bug
    > Components: Cayenne Core Library
    > Affects Versions: 2.0 [STABLE]
    > Environment: Windows XP, 1.6.0_07 by Sun Microsystems Inc., Microsoft SQL Server
    > Reporter: Laurentiu Cocanu
    > Assignee: Tore Halset
    > Fix For: 3.0
    >
    >
    > In cayenne/framework/cayenne-jdk1.5-unpublished/src/main/java/org/apache/cayenne/dba/sqlserver/SQLServerMergerFactory.java, the following method
    > ..verride
    > public MergerToken createSetNotNullToDb(DbEntity entity, final
    > DbAttribute column) {
    > return new SetNotNullToDb(entity, column) {
    > ..verride
    > public List<String> createSql(DbAdapter adapter) {
    > StringBuffer sqlBuffer = new StringBuffer();
    > sqlBuffer.append("ALTER TABLE ");
    > sqlBuffer.append(getEntity().getFullyQualifiedName());
    > sqlBuffer.append(" ALTER COLUMN ");
    > SQLServerAdapter sqladapter = (SQLServerAdapter) adapter;
    > sqladapter.createTableAppendColumn(sqlBuffer, column);
    > return Collections.singletonList(sqlBuffer.toString());
    > }
    > };
    > }
    > the cast SQLServerAdapter sqladapter = (SQLServerAdapter) adapter; will raise a Class Cast Exception.
    > A possible fix could be eliminating this cast as createTableAppendColumn method is defined in DbAdapter interface, so the cast is useless.
    > See http://www.nabble.com/Upcast-problems-w-SQLServerMergerFactory-and-AutoAdapter-td19664724.html (the patch is known but not implemented yet)

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