Examples with SystemColumn org.apache.derby.iapi.sql.dictionary.SystemColumn used on opensource projects

Example 1 with SystemColumn

use of org.apache.derby.iapi.sql.dictionary.SystemColumn in project derby by apache.

the class DataDictionaryImpl method upgrade_addColumns.

/**
 *	Upgrade an existing catalog by adding columns.
 *
 *	@param	rowFactory				Associated with this catalog.
 *	@param	newColumnIDs			Array of 1-based column ids.
 *	@param	tc						Transaction controller
 *
 *	@exception StandardException Standard Derby error policy
 */
public void upgrade_addColumns(CatalogRowFactory rowFactory, int[] newColumnIDs, TransactionController tc) throws StandardException {
    int columnID;
    SystemColumn currentColumn;
    SystemColumn[] columns = rowFactory.buildColumnList();
    ExecRow templateRow = rowFactory.makeEmptyRowForCurrentVersion();
    int columnCount = newColumnIDs.length;
    SchemaDescriptor sd = getSystemSchemaDescriptor();
    TableDescriptor td;
    long conglomID;
    // table/column descriptor until after we add and populate the new column.
    if (rowFactory instanceof SYSTABLESRowFactory) {
        td = dataDescriptorGenerator.newTableDescriptor("SYSTABLES", sd, TableDescriptor.BASE_TABLE_TYPE, TableDescriptor.ROW_LOCK_GRANULARITY);
        td.setUUID(getUUIDForCoreTable("SYSTABLES", sd.getUUID().toString(), tc));
        conglomID = coreInfo[SYSTABLES_CORE_NUM].getHeapConglomerate();
    } else if (rowFactory instanceof SYSCOLUMNSRowFactory) {
        td = dataDescriptorGenerator.newTableDescriptor("SYSCOLUMNS", sd, TableDescriptor.BASE_TABLE_TYPE, TableDescriptor.ROW_LOCK_GRANULARITY);
        td.setUUID(getUUIDForCoreTable("SYSCOLUMNS", sd.getUUID().toString(), tc));
        conglomID = coreInfo[SYSCOLUMNS_CORE_NUM].getHeapConglomerate();
    } else {
        td = getTableDescriptor(rowFactory.getCatalogName(), sd, tc);
        conglomID = td.getHeapConglomerateId();
    }
    widenConglomerate(templateRow, newColumnIDs, conglomID, tc);
    ColumnDescriptor[] cdArray = new ColumnDescriptor[columnCount];
    for (int ix = 0; ix < columnCount; ix++) {
        columnID = newColumnIDs[ix];
        // from 1 to 0 based
        currentColumn = columns[columnID - 1];
        cdArray[ix] = makeColumnDescriptor(currentColumn, columnID, td);
    }
    addDescriptorArray(cdArray, td, SYSCOLUMNS_CATALOG_NUM, false, tc);
}

Example 2 with SystemColumn

use of org.apache.derby.iapi.sql.dictionary.SystemColumn in project derby by apache.

the class DataDictionaryImpl method addSystemTableToDictionary.

/**
 *		Add the required entries to the data dictionary for a System table.
 */
private void addSystemTableToDictionary(TabInfoImpl ti, SchemaDescriptor sd, TransactionController tc, DataDescriptorGenerator ddg) throws StandardException {
    CatalogRowFactory crf = ti.getCatalogRowFactory();
    String name = ti.getTableName();
    long conglomId = ti.getHeapConglomerate();
    SystemColumn[] columnList = crf.buildColumnList();
    UUID heapUUID = crf.getCanonicalHeapUUID();
    String heapName = crf.getCanonicalHeapName();
    TableDescriptor td;
    UUID toid;
    int columnCount;
    SystemColumn column;
    // add table to the data dictionary
    columnCount = columnList.length;
    td = ddg.newTableDescriptor(name, sd, TableDescriptor.SYSTEM_TABLE_TYPE, TableDescriptor.ROW_LOCK_GRANULARITY);
    td.setUUID(crf.getCanonicalTableUUID());
    addDescriptor(td, sd, SYSTABLES_CATALOG_NUM, false, tc);
    toid = td.getUUID();
    /* Add the conglomerate for the heap */
    ConglomerateDescriptor cgd = ddg.newConglomerateDescriptor(conglomId, heapName, false, null, false, heapUUID, toid, sd.getUUID());
    addDescriptor(cgd, sd, SYSCONGLOMERATES_CATALOG_NUM, false, tc);
    /* Create the columns */
    ColumnDescriptor[] cdlArray = new ColumnDescriptor[columnCount];
    for (int columnNumber = 0; columnNumber < columnCount; columnNumber++) {
        column = columnList[columnNumber];
        if (SanityManager.DEBUG) {
            if (column == null) {
                SanityManager.THROWASSERT("column " + columnNumber + " for table " + ti.getTableName() + " is null");
            }
        }
        cdlArray[columnNumber] = makeColumnDescriptor(column, columnNumber + 1, td);
    }
    addDescriptorArray(cdlArray, td, SYSCOLUMNS_CATALOG_NUM, false, tc);
    // now add the columns to the cdl of the table.
    ColumnDescriptorList cdl = td.getColumnDescriptorList();
    for (int i = 0; i < columnCount; i++) cdl.add(cdlArray[i]);
}

Example 3 with SystemColumn

use of org.apache.derby.iapi.sql.dictionary.SystemColumn in project derby by apache.

the class DataDictionaryImpl method upgradeFixSystemColumnDefinition.

/**
 *	Upgrade an existing system catalog column's definition
 * by setting it to the value it would have in a newly
 * created database. This is only used to for a couple
 * of columns that had incorrectly nullability. Other
 * uses (e.g. changing column type) might require more work.
 *
 *	@param	columnNumber			The column to change
 *	@param	tc						Transaction controller
 *
 *	@exception StandardException Standard Derby error policy
 */
public void upgradeFixSystemColumnDefinition(CatalogRowFactory rowFactory, int columnNumber, TransactionController tc) throws StandardException {
    SystemColumn theColumn;
    SystemColumn[] columns = rowFactory.buildColumnList();
    SchemaDescriptor sd = getSystemSchemaDescriptor();
    TableDescriptor td = getTableDescriptor(rowFactory.getCatalogName(), sd, tc);
    // from 1 to 0 based
    theColumn = columns[columnNumber - 1];
    ColumnDescriptor cd = makeColumnDescriptor(theColumn, columnNumber, td);
    String columnName = cd.getColumnName();
    int[] columnNameColArray = new int[1];
    columnNameColArray[0] = SYSCOLUMNSRowFactory.SYSCOLUMNS_COLUMNDATATYPE;
    updateColumnDescriptor(cd, td.getUUID(), columnName, columnNameColArray, tc);
}