Examples of org.openstreetmap.josm.data.osm.DataSet.beginUpdate()

Class org.openstreetmap.josm.data.osm.DataSet

Examples of org.openstreetmap.josm.data.osm.DataSet.beginUpdate()

org.openstreetmap.josm.data.osm.DataSet.beginUpdate()
Can be called before bigger changes on dataset. Events are disabled until {@link #endUpdate()}. {@link DataSetListener#dataChanged(DataChangedEvent event)} event is triggered after end of changes
Typical usecase should look like this:
```
 ds.beginUpdate(); try { ... } finally { ds.endUpdate(); } 
```

                                        // This is not perfect, if current dataset was changed during execution, the lock would be useless
                                        if(isAtOldPosition && middleMouseDown) {
                                            // Write lock is necessary when selecting in popupCycleSelection
                                            // locks can not be upgraded -> if do read lock here and write lock later (in OsmPrimitive.updateFlags)
                                            // then always occurs deadlock (#5814)
                                            ds.beginUpdate();
                                        } else {
                                            ds.getReadLock().lock();
                                        }
                                    }

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    }


    @Override
    public void actionPerformed(ActionEvent e) {
        DataSet ds = getCurrentDataSet();
        ds.beginUpdate();
        try {
            List<Way> ways = OsmPrimitive.getFilteredList(ds.getSelected(), Way.class);
            if (ways.isEmpty()) {
                alertSelectAtLeastOneWay();
                return;

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            disabledCount = 0;
            changed = true;
        } else {
            final Collection<OsmPrimitive> deselect = new HashSet<>();


            ds.beginUpdate();
            try {


                final Collection<OsmPrimitive> all = ds.allNonDeletedCompletePrimitives();


                changed = FilterWorker.executeFilters(all, filterMatcher);

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            return;


        boolean changed = false;
        List<OsmPrimitive> deselect = new ArrayList<>();


        ds.beginUpdate();
        try {
            for (int i=0; i<2; i++) {
                for (OsmPrimitive primitive: primitives) {


                    if (i == 0 && primitive instanceof Node) {

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