@Override public void validate(IValidatable<Set<XMLGridSubset>> validatable) { if (!validate) { return; } Set<XMLGridSubset> gridSubsets = validatable.getValue(); if (gridSubsets == null || gridSubsets.size() == 0) { error(validatable, "GridSubsetsEditor.validation.empty"); return; } final GWC gwc = GWC.get(); for (XMLGridSubset subset : gridSubsets) { final String gridSetName = subset.getGridSetName(); final Integer zoomStart = subset.getZoomStart(); final Integer zoomStop = subset.getZoomStop(); final BoundingBox extent = subset.getExtent(); if (gridSetName == null) { throw new IllegalStateException("GridSet name is null"); } if (zoomStart != null && zoomStop != null) { if (zoomStart.intValue() > zoomStop.intValue()) { error(validatable, "GridSubsetsEditor.validation.zoomLevelsError"); return; } } final GridSetBroker gridSetBroker = gwc.getGridSetBroker(); final GridSet gridSet = gridSetBroker.get(gridSetName); if (null == gridSet) { error(validatable, "GridSubsetsEditor.validation.gridSetNotFound", gridSetName); return; } if (extent != null) { if (extent.isNull() || !extent.isSane()) { error(validatable, "GridSubsetsEditor.validation.invalidBounds"); } final BoundingBox fullBounds = gridSet.getOriginalExtent(); final boolean intersects = fullBounds.intersects(extent); if (!intersects) { error(validatable, "GridSubsetsEditor.validation.boundsOutsideCoverage"); } } } }