Examples with FilteredSlot org.activityinfo.store.query.shared.columns.FilteredSlot used on opensource projects

Example 1 with FilteredSlot

use of org.activityinfo.store.query.shared.columns.FilteredSlot in project activityinfo by bedatadriven.

the class QueryEvaluator method evaluate.

public Slot<ColumnSet> evaluate(final QueryModel model) {
    Slot<TableFilter> filter = filter(model.getFilter());
    final HashMap<String, Slot<ColumnView>> columnViews = Maps.newHashMap();
    for (ColumnModel column : model.getColumns()) {
        Slot<ColumnView> view;
        try {
            view = evaluateExpression(column.getFormula());
        } catch (FormulaException e) {
            throw new QuerySyntaxException("Syntax error in column " + column.getId() + " '" + column.getFormula() + "' : " + e.getMessage(), e);
        }
        columnViews.put(column.getId(), new FilteredSlot(filter, view));
    }
    if (columnViews.isEmpty()) {
        return new MemoizedSlot<>(batch.addRowCount(FilterLevel.PERMISSIONS, tree.getRootFormId()), new Function<Integer, ColumnSet>() {

            @Override
            public ColumnSet apply(Integer rowCount) {
                return new ColumnSet(rowCount, Collections.<String, ColumnView>emptyMap());
            }
        });
    } else {
        return new Slot<ColumnSet>() {

            private ColumnSet result = null;

            @Override
            public ColumnSet get() {
                if (result == null) {
                    // result
                    Map<String, ColumnView> dataMap = Maps.newHashMap();
                    for (Map.Entry<String, Slot<ColumnView>> entry : columnViews.entrySet()) {
                        dataMap.put(entry.getKey(), entry.getValue().get());
                    }
                    ColumnSet dataset = new ColumnSet(commonLength(dataMap), dataMap);
                    if (model.getSortModels().isEmpty()) {
                        result = dataset;
                    } else {
                        result = sort(dataset, model.getSortModels());
                    }
                }
                return result;
            }
        };
    }
}