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Posted to ddlutils-dev@db.apache.org by "Thomas Dudziak (JIRA)" <ji...@apache.org> on 2007/03/15 07:58:09 UTC
[jira] Resolved: (DDLUTILS-159) primary key column change causes
exception
[ https://issues.apache.org/jira/browse/DDLUTILS-159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Dudziak resolved DDLUTILS-159.
-------------------------------------
Resolution: Fixed
> primary key column change causes exception
> ------------------------------------------
>
> Key: DDLUTILS-159
> URL: https://issues.apache.org/jira/browse/DDLUTILS-159
> Project: DdlUtils
> Issue Type: Bug
> Components: Core (No specific database)
> Environment: Windows, SapDB 7.4 and Oracle 8
> Reporter: Stefan Huber
> Assigned To: Thomas Dudziak
> Fix For: 1.0
>
>
> I have the folowing table definition:
> <?xml version="1.0"?>
> <!DOCTYPE database SYSTEM "http://db.apache.org/torque/dtd/database">
> <database name="rmdb">
> <table name="ADDRESS">
> <column name="ID" primaryKey="true" required="true" type="INTEGER"/>
> <column name="TOWN" primaryKey="false" required="false" type="VARCHAR" size="40"/>
> </table>
> </database>
> I want to change the name of the primary key column. The new schema definition is:
> <?xml version="1.0"?>
> <!DOCTYPE database SYSTEM "http://db.apache.org/torque/dtd/database">
> <database name="rmdb">
> <table name="ADDRESS">
> <column name="ADDRESSID" primaryKey="true" required="true" type="INTEGER"/>
> <column name="TOWN" primaryKey="false" required="false" type="VARCHAR" size="40"/>
> </table>
> </database>
> DdlUtils throws the following exception in the alter table process:
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.ddlutils.alteration.AddPrimaryKeyChange.apply(AddPrimaryKeyChange.java:69)
> at org.apache.ddlutils.platform.SqlBuilder.processChange(SqlBuilder.java:1160)
> at org.apache.ddlutils.platform.sapdb.SapDbBuilder.processTableStructureChanges(SapDbBuilder.java:180)
> at org.apache.ddlutils.platform.SqlBuilder.processTableStructureChanges(SqlBuilder.java:921)
> at org.apache.ddlutils.platform.SqlBuilder.processTableStructureChanges(SqlBuilder.java:797)
> at org.apache.ddlutils.platform.SqlBuilder.processChanges(SqlBuilder.java:576)
> at org.apache.ddlutils.platform.SqlBuilder.alterDatabase(SqlBuilder.java:469)
> at org.apache.ddlutils.platform.PlatformImplBase.getAlterTablesSql(PlatformImplBase.java:756)
> The reason is, that an alteration of the table name is not supported via 'alter table' so DdlUtils recreates the table. But in 'SapDbBuilder.processTableStructureChanges' the new primary key is created before the table is recreated in the super-Method. So 'AddPrimaryKeyChange refers to a column that is not present and throws an exception.
> The behaviour is the same with Oracle:
> Exception in thread "main" java.lang.NullPointerException
> at org.apache.ddlutils.alteration.AddPrimaryKeyChange.apply(AddPrimaryKeyChange.java:69)
> at org.apache.ddlutils.platform.SqlBuilder.processChange(SqlBuilder.java:1160)
> at org.apache.ddlutils.platform.oracle.Oracle8Builder.processTableStructureChanges(Oracle8Builder.java:488)
> at org.apache.ddlutils.platform.SqlBuilder.processTableStructureChanges(SqlBuilder.java:921)
> at org.apache.ddlutils.platform.SqlBuilder.processTableStructureChanges(SqlBuilder.java:797)
> at org.apache.ddlutils.platform.SqlBuilder.processChanges(SqlBuilder.java:576)
> at org.apache.ddlutils.platform.SqlBuilder.alterDatabase(SqlBuilder.java:469)
> at org.apache.ddlutils.platform.PlatformImplBase.getAlterTablesSql(PlatformImplBase.java:756)
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