Examples of org.glassfish.jersey.message.filtering.spi.ObjectGraph

Package org.glassfish.jersey.message.filtering.spi

Examples of org.glassfish.jersey.message.filtering.spi.ObjectGraph

org.glassfish.jersey.message.filtering.spi.ObjectGraph
Read-only graph containing representations of an entity class that should be processed in entity-filtering. The representations are twofolds: simple (primitive/non-filterable) fields and further-filterable fields (represented by subgraphs).
Object graph instances are created for entity-filtering scopes that are obtained from entity annotations, configuration or scopes defined on resource methods / classes (on server). @author Michal Gajdos (michal.gajdos at oracle.com) @see ObjectGraphTransformer @see ScopeResolver

                                 final Class<?> entityClass, final Map<String, ObjectGraph> entitySubgraphs) {
        final Set<String> processed = Sets.newHashSet();


        for (final Map.Entry<String, ObjectGraph> entry : entitySubgraphs.entrySet()) {
            final Subgraph subgraph = graph.addSubgraph(entry.getKey());
            final ObjectGraph entityGraph = entry.getValue();


            final Set<String> fields = entityGraph.getFields(entry.getKey());
            if (!fields.isEmpty()) {
                subgraph.addAttributeNodes(fields.toArray(new String[fields.size()]));
            }


            final Map<String, ObjectGraph> subgraphs = entityGraph.getSubgraphs(entry.getKey());
            if (!subgraphs.isEmpty()) {
                final Class<?> subEntityClass = entityGraph.getEntityClass();


                processed.add(getProcessedSubgraph(entityClass, entry.getKey(), subEntityClass));
                createSubgraphs(entry.getKey(), subgraph, subEntityClass, subgraphs, processed);
            }
        }

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    private void createSubgraphs(final String parent, final Subgraph graph, final Class<?> entityClass,
                                 final Map<String, ObjectGraph> entitySubgraphs, final Set<String> processed) {
        for (final Map.Entry<String, ObjectGraph> entry : entitySubgraphs.entrySet()) {
            final Subgraph subgraph = graph.addSubgraph(entry.getKey());
            final ObjectGraph entityGraph = entry.getValue();
            
            String path = parent + "." + entry.getKey();


            final Set<String> fields = entityGraph.getFields(path);
            if (!fields.isEmpty()) {
                subgraph.addAttributeNodes(fields.toArray(new String[fields.size()]));
            }


            final Map<String, ObjectGraph> subgraphs = entityGraph.getSubgraphs();
            final Class<?> subEntityClass = entityGraph.getEntityClass();
            final String processedSubgraph = getProcessedSubgraph(entityClass, entry.getKey(), subEntityClass);


            if (!subgraphs.isEmpty() && !processed.contains(processedSubgraph)) {
                processed.add(processedSubgraph);
                createSubgraphs(path, subgraph, subEntityClass, subgraphs, processed);

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    @Override
    public Object readFrom(final Class<Object> type, final Type genericType, final Annotation[] annotations,
                           final MediaType mediaType, final MultivaluedMap<String, String> httpHeaders,
                           final InputStream entityStream) throws IOException, WebApplicationException {
        final ObjectGraph objectGraph = provider.get()
                .getFilteringObject(FilteringHelper.getEntityClass(genericType), false, annotations);


        return objectGraphToString(objectGraph);
    }

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    @Override
    public void writeTo(final Object o, final Class<?> type, final Type genericType, final Annotation[] annotations,
                        final MediaType mediaType, final MultivaluedMap<String, Object> httpHeaders,
                        final OutputStream entityStream) throws IOException, WebApplicationException {
        final ObjectGraph objectGraph = provider.get()
                .getFilteringObject(FilteringHelper.getEntityClass(genericType), true, annotations);


        entityStream.write(objectGraphToString(objectGraph).getBytes());
    }

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