Examples with SortOptions com.servoy.j2db.query.SortOptions used on opensource projects

Example 1 with SortOptions

use of com.servoy.j2db.query.SortOptions in project servoy-client by Servoy.

the class SQLGenerator method addSorts.

public void addSorts(QuerySelect sqlSelect, BaseQueryTable selectTable, IGlobalValueEntry provider, ITable table, List<SortColumn> orderByFields, boolean includeRelated, boolean permanentJoins) throws RepositoryException {
    List<Column> unusedRowidentColumns = new ArrayList<Column>(table.getRowIdentColumns());
    for (int i = 0; orderByFields != null && i < orderByFields.size(); i++) {
        SortColumn sc = orderByFields.get(i);
        // can be column or aggregate
        IColumn column = sc.getColumn();
        if (column.getDataProviderType() == MEDIA && (column.getFlags() & (IDENT_COLUMNS | UUID_COLUMN)) == 0) {
            // skip cannot sort blob columns
            continue;
        }
        SortOptions sortOptions = application.getFoundSetManager().getSortOptions(sc.getColumn());
        Relation[] relations = sc.getRelations();
        // compare on server objects, relation.foreignServerName may be different in case of duplicates
        boolean doRelatedJoin = (includeRelated && relations != null);
        if (doRelatedJoin) {
            FlattenedSolution fs = application.getFlattenedSolution();
            for (Relation relation : relations) {
                if (relation.isMultiServer() && !fs.getTable(relation.getForeignDataSource()).getServerName().equals(table.getServerName())) {
                    doRelatedJoin = false;
                    break;
                }
            }
        }
        if (doRelatedJoin) // related sort, cannot join across multiple servers
        {
            BaseQueryTable primaryQtable = selectTable;
            BaseQueryTable foreignQtable = null;
            for (Relation relation : relations) {
                // join must be re-created as it is possible to have globals involved;
                // first remove, then create it
                ISQLTableJoin join = (ISQLTableJoin) sqlSelect.getJoin(primaryQtable, relation.getName());
                if (join != null)
                    sqlSelect.getJoins().remove(join);
                if (join == null) {
                    ITable foreignTable = application.getFlattenedSolution().getTable(relation.getForeignDataSource());
                    foreignQtable = new QueryTable(foreignTable.getSQLName(), foreignTable.getDataSource(), foreignTable.getCatalog(), foreignTable.getSchema());
                } else {
                    foreignQtable = join.getForeignTable();
                }
                sqlSelect.addJoin(createJoin(application.getFlattenedSolution(), relation, primaryQtable, foreignQtable, permanentJoins, provider));
                primaryQtable = foreignQtable;
            }
            IQuerySelectValue queryColumn;
            if (column instanceof Column) {
                queryColumn = ((Column) column).queryColumn(foreignQtable);
                unusedRowidentColumns.remove(column);
            } else if (column instanceof AggregateVariable) {
                AggregateVariable aggregate = (AggregateVariable) column;
                queryColumn = new QueryAggregate(aggregate.getType(), new QueryColumn(foreignQtable, -1, aggregate.getColumnNameToAggregate(), aggregate.getDataProviderType(), aggregate.getLength(), 0, null, aggregate.getFlags()), aggregate.getName());
                // there has to be a group-by clause for all selected fields
                List<IQuerySelectValue> columns = sqlSelect.getColumns();
                for (IQuerySelectValue selectVal : columns) {
                    List<IQuerySelectValue> groupBy = sqlSelect.getGroupBy();
                    if (selectVal instanceof QueryColumn && (groupBy == null || !groupBy.contains(selectVal))) {
                        sqlSelect.addGroupBy(selectVal);
                    }
                }
                // if the aggregate has not been selected yet, add it and skip it in the result
                QueryAggregate skippedAggregate = new QueryAggregate(aggregate.getType(), QueryAggregate.ALL, new QueryColumn(foreignQtable, -1, aggregate.getColumnNameToAggregate(), aggregate.getDataProviderType(), aggregate.getLength(), 0, null, aggregate.getFlags()), aggregate.getName(), null, true);
                if (!columns.contains(skippedAggregate)) {
                    sqlSelect.addColumn(skippedAggregate);
                }
            } else {
                // $NON-NLS-1$
                Debug.log("Skipping sort on unexpected related column type " + column.getClass());
                continue;
            }
            sqlSelect.addSort(new QuerySort(queryColumn, sc.getSortOrder() == ASCENDING, sortOptions));
        } else {
            // make sure an invalid sort is not possible
            if (column instanceof Column && column.getTable().getName().equals(table.getName())) {
                sqlSelect.addSort(new QuerySort(((Column) column).queryColumn(selectTable), sc.getSortOrder() == ASCENDING, sortOptions));
                unusedRowidentColumns.remove(column);
            } else {
                // $NON-NLS-1$ //$NON-NLS-2$
                Debug.log("Skipping sort on unrelated column " + column.getName() + '.' + column.getTable().getName() + " for table " + table.getName());
            }
        }
    }
    // Make sure pk is part of the sort, in case of non-unique sort columns, the sorted result may not be the same in each fetch
    if (enforcePkInSort) {
        for (Column column : unusedRowidentColumns) {
            SortOptions sortOptions = application.getFoundSetManager().getSortOptions(column);
            sqlSelect.addSort(new QuerySort(column.queryColumn(selectTable), true, sortOptions));
        }
    }
}

Example 2 with SortOptions

use of com.servoy.j2db.query.SortOptions in project servoy-client by Servoy.

the class DBValueList method createValuelistQuery.

public static QuerySelect createValuelistQuery(IServiceProvider application, ValueList valueList, ITable table) {
    if (table == null)
        return null;
    FoundSetManager foundSetManager = ((FoundSetManager) application.getFoundSetManager());
    // do not add the default pk-sort, only add real configured sort columns on value list
    List<SortColumn> sortColumns = valueList.getSortOptions() == null ? null : foundSetManager.getSortColumns(table, valueList.getSortOptions());
    int showValues = valueList.getShowDataProviders();
    int returnValues = valueList.getReturnDataProviders();
    int total = (showValues | returnValues);
    QuerySelect select = new QuerySelect(new QueryTable(table.getSQLName(), table.getDataSource(), table.getCatalog(), table.getSchema()));
    ArrayList<IQuerySort> orderColumns = new ArrayList<IQuerySort>();
    ArrayList<IQuerySelectValue> columns = new ArrayList<IQuerySelectValue>();
    boolean useDefinedSort = sortColumns != null && sortColumns.size() > 0;
    if (useDefinedSort) {
        for (SortColumn sc : sortColumns) {
            SortOptions sortoptions = application.getFoundSetManager().getSortOptions(sc.getColumn());
            orderColumns.add(new QuerySort(getQuerySelectValue(table, select.getTable(), sc.getDataProviderID()), sc.getSortOrder() == SortColumn.ASCENDING, sortoptions));
        }
    }
    if ((total & 1) != 0) {
        IQuerySelectValue cSQLName = getQuerySelectValue(table, select.getTable(), valueList.getDataProviderID1());
        columns.add(cSQLName);
        if ((showValues & 1) != 0 && !useDefinedSort) {
            SortOptions sortoptions = application.getFoundSetManager().getSortOptions(table.getColumn(valueList.getDataProviderID1()));
            orderColumns.add(new QuerySort(cSQLName, true, sortoptions));
        }
    }
    if ((total & 2) != 0) {
        IQuerySelectValue cSQLName = getQuerySelectValue(table, select.getTable(), valueList.getDataProviderID2());
        columns.add(cSQLName);
        if ((showValues & 2) != 0 && !useDefinedSort) {
            SortOptions sortoptions = application.getFoundSetManager().getSortOptions(table.getColumn(valueList.getDataProviderID2()));
            orderColumns.add(new QuerySort(cSQLName, true, sortoptions));
        }
    }
    if ((total & 4) != 0) {
        IQuerySelectValue cSQLName = getQuerySelectValue(table, select.getTable(), valueList.getDataProviderID3());
        columns.add(cSQLName);
        if ((showValues & 4) != 0 && !useDefinedSort) {
            SortOptions sortoptions = application.getFoundSetManager().getSortOptions(table.getColumn(valueList.getDataProviderID3()));
            orderColumns.add(new QuerySort(cSQLName, true, sortoptions));
        }
    }
    // check if we can still use distinct
    select.setDistinct(SQLGenerator.isDistinctAllowed(columns, orderColumns));
    select.setColumns(columns);
    select.setSorts(orderColumns);
    return select;
}