Examples of org.gephi.filters.api.Query

org.gephi.filters.api.Query
Queries are wrapping filters and are assembled in a query tree. Each query is built from a single filter instance and it's role is to basically to execute the filter. The graph that is passed to the filter depends on the fact the query belongs to a complex query tree or if the tree is a single leaf.
The system works like this. Leaves of the query tree receives the complete graph and the subgraphs they return are passed to the parent query. Thus the root query is the last query to get the subgraphs and returns the final result. This querying system make possible to create query chains and complex scenario with various operators (AND, OR, ...).
Queries are built by the FilterController from filter instances. @author Mathieu Bastian @see FilterController

                return new PasteType() {


                    @Override
                    public Transferable paste() throws IOException {
                        FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
                        Query f = filterController.createQuery(fb.getFilter());
                        filterController.add(f);
                        return null;
                    }
                };
            } catch (UnsupportedFlavorException ex) {

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                    return new PasteType() {


                        @Override
                        public Transferable paste() throws IOException {
                            FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
                            Query f = filterController.createQuery(fb.getFilter());
                            filterController.add(f);
                            return null;
                        }
                    };
                } catch (UnsupportedFlavorException ex) {

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    @Override
    public PasteType getDropType(final Transferable t, int action, int index) {
        final Node dropNode = NodeTransfer.node(t, DnDConstants.ACTION_COPY_OR_MOVE);
        if (dropNode != null && dropNode instanceof QueryNode) {
            Query q = ((QueryNode) dropNode).getQuery();
            if (!Arrays.asList(q.getDescendantsAndSelf()).contains(parent)) { //Check if not parent
                return new PasteType() {


                    @Override
                    public Transferable paste() throws IOException {
                        QueryNode queryNode = (QueryNode) dropNode;
                        FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
                        filterController.setSubQuery(parent, queryNode.getQuery());
                        return null;
                    }
                };
            }
        } else if (t.isDataFlavorSupported(FilterBuilderNode.DATA_FLAVOR)) {
            return new PasteType() {


                @Override
                public Transferable paste() throws IOException {
                    try {
                        FilterBuilder builder = (FilterBuilder) t.getTransferData(FilterBuilderNode.DATA_FLAVOR);
                        FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
                        Query query = filterController.createQuery(builder.getFilter());
                        filterController.setSubQuery(parent, query);
                    } catch (UnsupportedFlavorException ex) {
                        Exceptions.printStackTrace(ex);
                    }

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    @Override
    public void actionPerformed(ActionEvent ev) {
        FilterBuilderNode node = (FilterBuilderNode) ev.getSource();
        FilterBuilder builder = node.getBuilder();
        FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
        Query function = filterController.createQuery(builder.getFilter());
        filterController.add(function);
    }

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                        filterController.setCurrentQuery(null);
                        return;
                    }
                }
                QueryNode queryNode = (QueryNode) node;
                final Query query = queryNode.getQuery();
                new Thread(new Runnable() {


                    public void run() {
                        uiModel.setSelectedQuery(query);
                        model.removeChangeListener(QueryExplorer.this);

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        public void actionPerformed(ActionEvent e) {
            FilterController filterController = Lookup.getDefault().lookup(FilterController.class);
            if (query.getParent() == null) {
                //filterController.add(query);
                Query q = filterController.createQuery(query.getFilter());
                filterController.add(q);
            } else {
                //filterController.add(query.getParent());
                Query q = filterController.createQuery(query.getParent().getFilter());
                filterController.add(q);
            }
        }

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    public void setVisibleTimeInterval(TimeInterval visibleTimeInterval) {
        if (!Double.isNaN(visibleTimeInterval.getLow()) && !Double.isNaN(visibleTimeInterval.getHigh()) && !this.visibleTimeInterval.equals(visibleTimeInterval)) {
            this.visibleTimeInterval = visibleTimeInterval;


            //Filters
            Query dynamicQuery = null;
            boolean selecting = false;


            //Get or create Dynamic Query
            if (filterModel.getCurrentQuery() != null) {
                //Look if current query is dynamic - filtering must be active
                Query query = filterModel.getCurrentQuery();
                Query[] dynamicQueries = query.getQueries(DynamicRangeFilter.class);
                if (dynamicQueries.length > 0) {
                    dynamicQuery = query;
                    selecting = filterModel.isSelecting();
                }
            } else if (filterModel.getQueries().length == 1) {
                //Look if a dynamic query alone exists
                Query query = filterModel.getQueries()[0];
                Query[] dynamicQueries = query.getQueries(DynamicRangeFilter.class);
                if (dynamicQueries.length > 0) {
                    dynamicQuery = query;
                }
            }

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                }
            }
            if (!running) {
                return;
            }
            Query modifiedQuery = null;
            for (Iterator<PropertyModifier> itr = modifiersMap.values().iterator(); itr.hasNext();) {
                PropertyModifier pm = itr.next();
                itr.remove();
                pm.callback.setValue(pm.value);
                modifiedQuery = pm.query;
            }
            if (modifiedQuery != null) {
                model.updateParameters(modifiedQuery);
            }


            //Progress
            ProgressTicket progressTicket = null;
            ProgressTicketProvider progressTicketProvider = Lookup.getDefault().lookup(ProgressTicketProvider.class);
            if (progressTicketProvider != null) {
                progressTicket = progressTicketProvider.createTicket("Filtering", null);
                Progress.start(progressTicket);
            }


            if (filtering) {
                filter(q);
            } else {
                select(q);
            }


            Progress.finish(progressTicket);
            /*try {
            //System.out.println("filter query " + q.getName());
            Thread.sleep(5000);
            } catch (InterruptedException ex) {
            Exceptions.printStackTrace(ex);
            }*/
        }
        //clear map
        Query q = null;
        for (Iterator<PropertyModifier> itr = modifiersMap.values().iterator(); itr.hasNext();) {
            PropertyModifier pm = itr.next();
            pm.callback.setValue(pm.value);
            q = pm.query;
        }

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    public Query[] getQueries(Class<? extends Filter> filterClass) {
        List<Query> r = new LinkedList<Query>();
        LinkedList<Query> stack = new LinkedList<Query>();
        stack.add(this);
        while (!stack.isEmpty()) {
            Query q = stack.pop();
            r.add(q);
            stack.addAll(Arrays.asList(q.getChildren()));
        }
        for (Iterator<Query> itr = r.iterator(); itr.hasNext();) {
            Query q = itr.next();
            if (!q.getFilter().getClass().equals(filterClass)) {
                itr.remove();
            }
        }
        return r.toArray(new Query[0]);
    }

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    public Query[] getDescendantsAndSelf() {
        List<Query> r = new LinkedList<Query>();
        LinkedList<Query> stack = new LinkedList<Query>();
        stack.add(this);
        while (!stack.isEmpty()) {
            Query q = stack.pop();
            r.add(q);
            stack.addAll(Arrays.asList(q.getChildren()));
        }
        return r.toArray(new Query[0]);
    }

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org.gephi.desktop.filters.FilterUIModel

org.gephi.desktop.filters.library.FilterBuilderNodeDefaultAction

org.gephi.desktop.filters.query.QueryChildren$HelpNode

org.gephi.desktop.filters.query.QueryExplorer

org.gephi.desktop.filters.query.QueryNode$DuplicateAction

org.gephi.desktop.filters.query.RootNode

org.gephi.desktop.filters.query.SlotNode

org.gephi.dynamic.DynamicModelImpl

org.gephi.filters.AbstractQueryImpl

org.gephi.filters.FilterControllerImpl

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