Package org.apache.ddlutils.alteration

Examples of org.apache.ddlutils.alteration.TableChange

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        // column without a default value that is not autoincrement
        boolean requiresFullRebuild = false;

        for (Iterator changeIt = changes.iterator(); !requiresFullRebuild && changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            if (change instanceof AddColumnChange)
            {
                AddColumnChange addColumnChange = (AddColumnChange)change;

                if (addColumnChange.getNewColumn().isRequired() &&
                    (addColumnChange.getNewColumn().getDefaultValue() == null) &&
                    !addColumnChange.getNewColumn().isAutoIncrement())
                {
                    requiresFullRebuild = true;
                }
            }
        }
        if (!requiresFullRebuild)
        {
            processTableStructureChanges(currentModel, desiredModel, sourceTable, targetTable, parameters, changes);
        }

        if (!changes.isEmpty())
        {
            // we can only copy the data if no required columns without default value and
            // non-autoincrement have been added
            boolean canMigrateData = true;

            for (Iterator it = changes.iterator(); canMigrateData && it.hasNext();)
            {
                TableChange change = (TableChange)it.next();

                if (change instanceof AddColumnChange)
                {
                    AddColumnChange addColumnChange = (AddColumnChange)change;

                    if (addColumnChange.getNewColumn().isRequired() &&
                        !addColumnChange.getNewColumn().isAutoIncrement() &&
                        (addColumnChange.getNewColumn().getDefaultValue() == null))
                    {
                        _log.warn("Data cannot be retained in table " + change.getChangedTable().getName() +
                                  " because of the addition of the required column " + addColumnChange.getNewColumn().getName());
                        canMigrateData = false;
                    }
                }
            }
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                                                Map      parameters,
                                                List     changes) throws IOException
    {
        if (changes.size() == 1)
        {
            TableChange change = (TableChange)changes.get(0);

            if (change instanceof AddPrimaryKeyChange)
            {
                processChange(currentModel, desiredModel, (AddPrimaryKeyChange)change);
                changes.clear();
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        //       This will be easier once named primary keys are supported
        boolean pkColumnAdded = false;

        for (Iterator changeIt = changes.iterator(); changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            if (change instanceof AddColumnChange)
            {
                AddColumnChange addColumnChange = (AddColumnChange)change;

                // TODO: we cannot add columns to the primary key this way
                //       because we would have to drop the pk first and then
                //       add a new one afterwards which is not supported yet
                if (addColumnChange.getNewColumn().isPrimaryKey())
                {
                    pkColumnAdded = true;  
                }
                else
                {
                    processChange(currentModel, desiredModel, addColumnChange);
                    changeIt.remove();
                }
            }
            else if (change instanceof RemoveColumnChange)
            {
                RemoveColumnChange removeColumnChange = (RemoveColumnChange)change;

                // TODO: we cannot drop primary key columns this way
                //       because we would have to drop the pk first and then
                //       add a new one afterwards which is not supported yet
                if (!removeColumnChange.getColumn().isPrimaryKey())
                {
                    processChange(currentModel, desiredModel, removeColumnChange);
                    changeIt.remove();
                }
            }
        }
        for (Iterator changeIt = changes.iterator(); changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            // we can only add a primary key if all columns are present in the table
            // i.e. none was added during this alteration
            if ((change instanceof AddPrimaryKeyChange) && !pkColumnAdded)
            {
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                                                List     changes) throws IOException
    {
        // DB2 provides only limited ways to alter a column, so we don't use them
        for (Iterator changeIt = changes.iterator(); changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            if (change instanceof AddColumnChange)
            {
                AddColumnChange addColumnChange = (AddColumnChange)change;

                // DB2 can only add not insert columns
                // Also, DB2 does not allow the GENERATED BY DEFAULT AS IDENTITY clause in
                // the ALTER TABLE ADD COLUMN statement, so we have to rebuild the table instead
                if ((addColumnChange.getNextColumn() == null) && !addColumnChange.getNewColumn().isAutoIncrement())
                {
                    processChange(currentModel, desiredModel, addColumnChange);
                    changeIt.remove();
                }
            }
        }

        for (Iterator changeIt = changes.iterator(); changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            if (change instanceof AddPrimaryKeyChange)
            {
                processChange(currentModel, desiredModel, (AddPrimaryKeyChange)change);
                changeIt.remove();
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                                                Map      parameters,
                                                List     changes) throws IOException
    {
        for (Iterator changeIt = changes.iterator(); changeIt.hasNext();)
        {
            TableChange change = (TableChange)changeIt.next();

            if (change instanceof AddColumnChange)
            {
                AddColumnChange addColumnChange = (AddColumnChange)change;
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  • org.apache.ddlutils.platform.hsqldb.HsqlDbBuilder
  • org.apache.ddlutils.platform.interbase.InterbaseBuilder
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  • org.apache.ddlutils.platform.mssql.MSSqlBuilder
  • org.apache.ddlutils.platform.mysql.MySqlBuilder
  • org.apache.ddlutils.platform.oracle.Oracle8Builder
  • org.apache.ddlutils.platform.postgresql.PostgreSqlBuilder
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