public CoverageViewAbstractPage( String workspaceName, String storeName, String coverageName, CoverageInfo coverageInfo) throws IOException { storeId = getCatalog().getStoreByName(workspaceName, storeName, CoverageStoreInfo.class).getId(); Catalog catalog = getCatalog(); CoverageStoreInfo store = catalog.getStore(storeId, CoverageStoreInfo.class); GridCoverage2DReader reader = (GridCoverage2DReader) catalog.getResourcePool().getGridCoverageReader(store, null); String[] coverageNames = reader.getGridCoverageNames(); if (availableCoverages == null) { availableCoverages = new ArrayList<String>(); } for (String coverage : coverageNames) { ImageLayout layout = reader.getImageLayout(coverage); SampleModel sampleModel = layout.getSampleModel(null); final int numBands = sampleModel.getNumBands(); if (numBands == 1) { // simple syntax for simple case availableCoverages.add(coverage); } else { for (int i = 0; i < numBands; i++) { availableCoverages.add(coverage + CoverageView.BAND_SEPARATOR + i); } } } Collections.sort(availableCoverages); name = COVERAGE_VIEW_NAME; if (coverageName != null) { newCoverage = false; // grab the coverage view coverageViewInfo = coverageInfo != null ? coverageInfo : catalog.getResourceByStore(store, coverageName, CoverageInfo.class); CoverageView coverageView = coverageViewInfo.getMetadata().get(CoverageView.COVERAGE_VIEW, CoverageView.class); // the type can be still not saved if (coverageViewInfo != null) { coverageInfoId = coverageViewInfo.getId(); } if (coverageView == null) { throw new IllegalArgumentException( "The specified coverage does not have a coverage view attached to it"); } outputBands = new ArrayList<CoverageBand>(coverageView.getCoverageBands()); name = coverageView.getName(); } else { outputBands = new ArrayList<CoverageBand>(); newCoverage = true; coverageViewInfo = null; } selectedCoverages = new ArrayList<String>(availableCoverages); // build the form and the text area Form<CoverageViewAbstractPage> form = new Form<>("form", new CompoundPropertyModel<>(this)); add(form); final TextField<String> nameField = new TextField<>("name"); nameField.setRequired(true); nameField.add(new CoverageViewNameValidator()); form.add(nameField); coverageEditor = new CoverageViewEditor( "coverages", new PropertyModel<>(this, "selectedCoverages"), new PropertyModel<>(this, "outputBands"), availableCoverages); form.add(coverageEditor); // save and cancel at the bottom of the page form.add( new SubmitLink("save") { @Override public void onSubmit() { onSave(); } }); form.add( new Link<Void>("cancel") { @Override public void onClick() { onCancel(); } }); }