Examples with NullDataSource org.apache.tapestry5.internal.grid.NullDataSource used on opensource projects

Example 1 with NullDataSource

use of org.apache.tapestry5.internal.grid.NullDataSource in project tapestry-5 by apache.

the class TapestryModule method contributeTypeCoercer.

/**
 * Adds coercions:
 * <ul>
 * <li>String to {@link SelectModel}
 * <li>Map to {@link SelectModel}
 * <li>Collection to {@link GridDataSource}
 * <li>null to {@link GridDataSource}
 * <li>List to {@link SelectModel}
 * <li>{@link ComponentResourcesAware} (typically, a component) to {@link ComponentResources}
 * <li>{@link ComponentResources} to {@link PropertyOverrides}
 * <li>String to {@link Renderable}
 * <li>{@link Renderable} to {@link Block}
 * <li>String to {@link DateFormat}
 * <li>String to {@link Resource} (via {@link AssetSource#resourceForPath(String)})
 * <li>{@link Renderable} to {@link RenderCommand}</li>
 * <li>String to {@link Pattern}</li>
 * <li>String to {@link DateFormat}</li>
 * <li>{@link Resource} to {@link DynamicTemplate}</li>
 * <li>{@link Asset} to {@link Resource}</li>
 * <li>{@link ValueEncoder} to {@link ValueEncoderFactory}</li>
 * </ul>
 */
public static void contributeTypeCoercer(MappedConfiguration<CoercionTuple.Key, CoercionTuple> configuration, final ObjectLocator objectLocator, @Builtin final ThreadLocale threadLocale, @Core final AssetSource assetSource, @Core final DynamicTemplateParser dynamicTemplateParser) {
    CoercionTuple<ComponentResources, PropertyOverrides> componentResourcesToPropertyOverrides = CoercionTuple.create(ComponentResources.class, PropertyOverrides.class, new Coercion<ComponentResources, PropertyOverrides>() {

        public PropertyOverrides coerce(ComponentResources input) {
            return new PropertyOverridesImpl(input);
        }
    });
    configuration.add(componentResourcesToPropertyOverrides.getKey(), componentResourcesToPropertyOverrides);
    // See TAP5-2184 for why this causes some trouble!
    CoercionTuple<String, SelectModel> stringToSelectModel = CoercionTuple.create(String.class, SelectModel.class, new Coercion<String, SelectModel>() {

        public SelectModel coerce(String input) {
            return TapestryInternalUtils.toSelectModel(input);
        }
    });
    configuration.add(stringToSelectModel.getKey(), stringToSelectModel);
    CoercionTuple<Map, SelectModel> mapToSelectModel = CoercionTuple.create(Map.class, SelectModel.class, new Coercion<Map, SelectModel>() {

        @SuppressWarnings("unchecked")
        public SelectModel coerce(Map input) {
            return TapestryInternalUtils.toSelectModel(input);
        }
    });
    configuration.add(mapToSelectModel.getKey(), mapToSelectModel);
    CoercionTuple<Collection, GridDataSource> collectionToGridDataSource = CoercionTuple.create(Collection.class, GridDataSource.class, new Coercion<Collection, GridDataSource>() {

        public GridDataSource coerce(Collection input) {
            return new CollectionGridDataSource(input);
        }
    });
    configuration.add(collectionToGridDataSource.getKey(), collectionToGridDataSource);
    CoercionTuple<Void, GridDataSource> voidToGridDataSource = CoercionTuple.create(void.class, GridDataSource.class, new Coercion<Void, GridDataSource>() {

        private final GridDataSource source = new NullDataSource();

        public GridDataSource coerce(Void input) {
            return source;
        }
    });
    configuration.add(voidToGridDataSource.getKey(), voidToGridDataSource);
    CoercionTuple<List, SelectModel> listToSelectModel = CoercionTuple.create(List.class, SelectModel.class, new Coercion<List, SelectModel>() {

        private SelectModelFactory selectModelFactory;

        @SuppressWarnings("unchecked")
        public SelectModel coerce(List input) {
            // to another value, and a race condition is harmless.
            if (selectModelFactory == null) {
                selectModelFactory = objectLocator.getService(SelectModelFactory.class);
            }
            return selectModelFactory.create(input);
        }
    });
    configuration.add(listToSelectModel.getKey(), listToSelectModel);
    CoercionTuple<String, Pattern> stringToPattern = CoercionTuple.create(String.class, Pattern.class, new Coercion<String, Pattern>() {

        public Pattern coerce(String input) {
            return Pattern.compile(input);
        }
    });
    configuration.add(stringToPattern.getKey(), stringToPattern);
    CoercionTuple<ComponentResourcesAware, ComponentResources> componentResourcesAwareToComponentResources = CoercionTuple.create(ComponentResourcesAware.class, ComponentResources.class, new Coercion<ComponentResourcesAware, ComponentResources>() {

        public ComponentResources coerce(ComponentResourcesAware input) {
            return input.getComponentResources();
        }
    });
    configuration.add(componentResourcesAwareToComponentResources.getKey(), componentResourcesAwareToComponentResources);
    CoercionTuple<String, Renderable> stringToRenderable = CoercionTuple.create(String.class, Renderable.class, new Coercion<String, Renderable>() {

        public Renderable coerce(String input) {
            return new StringRenderable(input);
        }
    });
    configuration.add(stringToRenderable.getKey(), stringToRenderable);
    CoercionTuple<Renderable, Block> renderableToBlock = CoercionTuple.create(Renderable.class, Block.class, new Coercion<Renderable, Block>() {

        public Block coerce(Renderable input) {
            return new RenderableAsBlock(input);
        }
    });
    configuration.add(renderableToBlock.getKey(), renderableToBlock);
    CoercionTuple<String, DateFormat> stringToDateFormat = CoercionTuple.create(String.class, DateFormat.class, new Coercion<String, DateFormat>() {

        public DateFormat coerce(String input) {
            final SimpleDateFormat dateFormat = new SimpleDateFormat(input, threadLocale.getLocale());
            final String lenient = objectLocator.getService(SymbolSource.class).valueForSymbol(SymbolConstants.LENIENT_DATE_FORMAT);
            dateFormat.setLenient(Boolean.parseBoolean(lenient));
            return dateFormat;
        }
    });
    configuration.add(stringToDateFormat.getKey(), stringToDateFormat);
    CoercionTuple<String, Resource> stringToResource = CoercionTuple.create(String.class, Resource.class, new Coercion<String, Resource>() {

        public Resource coerce(String input) {
            return assetSource.resourceForPath(input);
        }
    });
    configuration.add(stringToResource.getKey(), stringToResource);
    CoercionTuple<Renderable, RenderCommand> renderableToRenderCommand = CoercionTuple.create(Renderable.class, RenderCommand.class, new Coercion<Renderable, RenderCommand>() {

        public RenderCommand coerce(final Renderable input) {
            return new RenderCommand() {

                public void render(MarkupWriter writer, RenderQueue queue) {
                    input.render(writer);
                }
            };
        }
    });
    configuration.add(renderableToRenderCommand.getKey(), renderableToRenderCommand);
    CoercionTuple<Date, Calendar> dateToCalendar = CoercionTuple.create(Date.class, Calendar.class, new Coercion<Date, Calendar>() {

        public Calendar coerce(Date input) {
            Calendar calendar = Calendar.getInstance(threadLocale.getLocale());
            calendar.setTime(input);
            return calendar;
        }
    });
    configuration.add(dateToCalendar.getKey(), dateToCalendar);
    CoercionTuple<Resource, DynamicTemplate> resourceToDynamicTemplate = CoercionTuple.create(Resource.class, DynamicTemplate.class, new Coercion<Resource, DynamicTemplate>() {

        public DynamicTemplate coerce(Resource input) {
            return dynamicTemplateParser.parseTemplate(input);
        }
    });
    configuration.add(resourceToDynamicTemplate.getKey(), resourceToDynamicTemplate);
    CoercionTuple<Asset, Resource> assetToResource = CoercionTuple.create(Asset.class, Resource.class, new Coercion<Asset, Resource>() {

        public Resource coerce(Asset input) {
            return input.getResource();
        }
    });
    configuration.add(assetToResource.getKey(), assetToResource);
    CoercionTuple<ValueEncoder, ValueEncoderFactory> valueEncoderToValueEncoderFactory = CoercionTuple.create(ValueEncoder.class, ValueEncoderFactory.class, new Coercion<ValueEncoder, ValueEncoderFactory>() {

        public ValueEncoderFactory coerce(ValueEncoder input) {
            return new GenericValueEncoderFactory(input);
        }
    });
    configuration.add(valueEncoderToValueEncoderFactory.getKey(), valueEncoderToValueEncoderFactory);
}