Examples with RemoveForeignKeyChange org.jumpmind.db.alter.RemoveForeignKeyChange used on opensource projects

Example 1 with RemoveForeignKeyChange

use of org.jumpmind.db.alter.RemoveForeignKeyChange in project symmetric-ds by JumpMind.

the class MsSql2000DdlBuilder method processChanges.

@Override
protected void processChanges(Database currentModel, Database desiredModel, List<IModelChange> changes, StringBuilder ddl) {
    if (!changes.isEmpty()) {
        writeQuotationOnStatement(ddl);
    }
    /*
         * For column data type and size changes, we need to drop and then
         * re-create indexes and foreign keys using the column, as well as any
         * primary keys containg these columns However, if the index/foreign
         * key/primary key is already slated for removal or change, then we
         * don't want to generate change duplication
         */
    HashSet<IIndex> removedIndexes = new HashSet<IIndex>();
    HashSet<ForeignKey> removedForeignKeys = new HashSet<ForeignKey>();
    HashSet<Table> removedPKs = new HashSet<Table>();
    for (Iterator<IModelChange> changeIt = changes.iterator(); changeIt.hasNext(); ) {
        IModelChange change = changeIt.next();
        if (change instanceof RemoveIndexChange) {
            removedIndexes.add(((RemoveIndexChange) change).getIndex());
        } else if (change instanceof RemoveForeignKeyChange) {
            removedForeignKeys.add(((RemoveForeignKeyChange) change).getForeignKey());
        } else if (change instanceof RemovePrimaryKeyChange) {
            removedPKs.add(((RemovePrimaryKeyChange) change).getChangedTable());
        }
    }
    ArrayList<TableChange> additionalChanges = new ArrayList<TableChange>();
    for (Iterator<IModelChange> changeIt = changes.iterator(); changeIt.hasNext(); ) {
        IModelChange change = changeIt.next();
        if ((change instanceof ColumnDataTypeChange) || (change instanceof ColumnSizeChange)) {
            Column column = ((ColumnChange) change).getChangedColumn();
            Table table = ((ColumnChange) change).getChangedTable();
            if (column.isPrimaryKey() && !removedPKs.contains(table)) {
                Column[] pk = table.getPrimaryKeyColumns();
                additionalChanges.add(new RemovePrimaryKeyChange(table, pk));
                additionalChanges.add(new AddPrimaryKeyChange(table, pk));
                removedPKs.add(table);
            }
            for (int idx = 0; idx < table.getIndexCount(); idx++) {
                IIndex index = table.getIndex(idx);
                if (index.hasColumn(column) && !removedIndexes.contains(index)) {
                    additionalChanges.add(new RemoveIndexChange(table, index));
                    additionalChanges.add(new AddIndexChange(table, index));
                    removedIndexes.add(index);
                }
            }
            for (int tableIdx = 0; tableIdx < currentModel.getTableCount(); tableIdx++) {
                Table curTable = currentModel.getTable(tableIdx);
                for (int fkIdx = 0; fkIdx < curTable.getForeignKeyCount(); fkIdx++) {
                    ForeignKey curFk = curTable.getForeignKey(fkIdx);
                    if ((curFk.hasLocalColumn(column) || curFk.hasForeignColumn(column)) && !removedForeignKeys.contains(curFk)) {
                        additionalChanges.add(new RemoveForeignKeyChange(curTable, curFk));
                        additionalChanges.add(new AddForeignKeyChange(curTable, curFk));
                        removedForeignKeys.add(curFk);
                    }
                }
            }
        }
    }
    changes.addAll(additionalChanges);
    super.processChanges(currentModel, desiredModel, changes, ddl);
}