Examples of javax.ws.rs.ext.MessageBodyReader

javax.ws.rs.ext.MessageBodyReader
Contract for a provider that supports the conversion of a stream to a Java type. A {@code MessageBodyReader} implementation may be annotatedwith {@link javax.ws.rs.Consumes} to restrict the media types for which it willbe considered suitable.
Providers implementing {@code MessageBodyReader} contract must be either programmaticallyregistered in a JAX-RS runtime or must be annotated with {@link javax.ws.rs.ext.Provider @Provider} annotation to be automatically discoveredby the JAX-RS runtime during a provider scanning phase.
@param < T> Java type supported by the provider @author Paul Sandoz @author Marc Hadley @see Provider @see javax.ws.rs.Consumes @since 1.0

    @SuppressWarnings("unchecked")
    @Test
    public void testReadChineeseChars() throws Exception {
        String s = "中文";
        
        MessageBodyReader p = new PrimitiveTextProvider();
        
        String value = (String)p.readFrom((Class)String.class, null,
                new Annotation[]{}, 
                MediaType.valueOf(MediaType.APPLICATION_XML + ";charset=UTF-8"), null, 
                new ByteArrayInputStream(s.getBytes("UTF-8")));
        assertEquals(value, value);
    }

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    }
    
    @SuppressWarnings("unchecked")
    @Test
    public void testReadByte() throws Exception {
        MessageBodyReader p = new PrimitiveTextProvider();
        
        Byte valueRead = (Byte)p.readFrom(byte.class, 
                                          null, 
                                          null, 
                                          null, 
                                          null, 
                                          new ByteArrayInputStream("1".getBytes()));

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    }
    
    @SuppressWarnings("unchecked")
    @Test
    public void testReadBoolean() throws Exception {
        MessageBodyReader p = new PrimitiveTextProvider();
        
        boolean valueRead = (Boolean)p.readFrom(boolean.class, 
                                          null, 
                                          null, 
                                          null, 
                                          null, 
                                          new ByteArrayInputStream("true".getBytes()));

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    }
    
    private void doTestDefaultJaxbProviderCloned(ProviderFactory pf, String property) {
        Message message = new MessageImpl();
        message.put(Message.QUERY_STRING, "uri=" + property);
        MessageBodyReader customJaxbReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, message);
        assertTrue(customJaxbReader instanceof JAXBElementProvider);
        
        JAXBElementProvider provider = (JAXBElementProvider)customJaxbReader;
        MessageContext mc = provider.getContext();
        assertNotNull(mc);
        UriInfo ui = mc.getUriInfo();
        MultivaluedMap<String, String> queries = ui.getQueryParameters();
        assertEquals(1, queries.size());
        List<String> uriQuery = queries.get("uri");
        assertEquals(1, uriQuery.size());
        assertEquals(property, uriQuery.get(0));
        
        MessageBodyReader customJaxbReader2 = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, message);
        assertSame(customJaxbReader, customJaxbReader2);
         
        MessageBodyWriter customJaxbWriter = pf.createMessageBodyWriter((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, message);
        assertSame(customJaxbReader, customJaxbWriter);
        
        MessageBodyReader jaxbReader = ProviderFactory.getSharedInstance().createMessageBodyReader(
            (Class<?>)Book.class, null, null, MediaType.TEXT_XML_TYPE, message);
        assertTrue(jaxbReader instanceof JAXBElementProvider);
        assertNotSame(jaxbReader, customJaxbReader);
    }

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    @Test
    public void testCustomJaxbProvider() {
        ProviderFactory pf = ProviderFactory.getInstance();
        JAXBElementProvider provider = new JAXBElementProvider();
        pf.registerUserProvider(provider);
        MessageBodyReader customJaxbReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, new MessageImpl());
        assertSame(customJaxbReader, provider);
        
        MessageBodyWriter customJaxbWriter = pf.createMessageBodyWriter((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, new MessageImpl());

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    @Test
    public void testCustomJsonProvider() {
        ProviderFactory pf = ProviderFactory.getInstance();
        JSONProvider provider = new JSONProvider();
        pf.registerUserProvider(provider);
        MessageBodyReader customJsonReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                               MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertSame(customJsonReader, provider);
        
        MessageBodyWriter customJsonWriter = pf.createMessageBodyWriter((Class<?>)Book.class, null, null, 
                                               MediaType.APPLICATION_JSON_TYPE, new MessageImpl());

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    }
    
    @Test
    public void testDefaultJsonProviderCloned() {
        ProviderFactory pf = ProviderFactory.getInstance();
        MessageBodyReader customJsonReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertTrue(customJsonReader instanceof JSONProvider);
        
        MessageBodyReader customJsonReader2 = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertSame(customJsonReader, customJsonReader2);
        
        MessageBodyWriter customJsonWriter = pf.createMessageBodyWriter((Class<?>)Book.class, null, null, 
                                                MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertSame(customJsonReader, customJsonWriter);
        
        MessageBodyReader jsonReader = ProviderFactory.getSharedInstance().createMessageBodyReader(
            (Class<?>)Book.class, null, null, MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertTrue(jsonReader instanceof JSONProvider);
        assertNotSame(jsonReader, customJsonReader);
    }

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    @Test
    public void testSchemaLocations() {
        ProviderFactory pf = ProviderFactory.getInstance();
        pf.setSchemaLocations(Collections.singletonList("classpath:/test.xsd"));
        MessageBodyReader customJaxbReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                              MediaType.TEXT_XML_TYPE, new MessageImpl());
        assertTrue(customJaxbReader instanceof JAXBElementProvider);
        MessageBodyReader jaxbReader = ProviderFactory.getSharedInstance().createMessageBodyReader(
            (Class<?>)Book.class, null, null, MediaType.TEXT_XML_TYPE, new MessageImpl());
        assertTrue(jaxbReader instanceof JAXBElementProvider);
        assertNotSame(jaxbReader, customJaxbReader);
        
        assertNull(((JAXBElementProvider)jaxbReader).getSchema());
        assertNotNull(((JAXBElementProvider)customJaxbReader).getSchema());
        
        MessageBodyReader customJsonReader = pf.createMessageBodyReader((Class<?>)Book.class, null, null, 
                                                 MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertTrue(customJsonReader instanceof JSONProvider);
        MessageBodyReader jsonReader = ProviderFactory.getSharedInstance().createMessageBodyReader(
            (Class<?>)Book.class, null, null, MediaType.APPLICATION_JSON_TYPE, new MessageImpl());
        assertTrue(jsonReader instanceof JSONProvider);
        assertNotSame(jsonReader, customJsonReader);
        assertNull(((JSONProvider)jsonReader).getSchema());
        assertNotNull(((JSONProvider)customJsonReader).getSchema());

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            pf = ProviderFactory.getInstance();
        }
        
        MediaType mType = MediaType.valueOf(mediaType);
        
        MessageBodyReader reader = pf.createMessageBodyReader(type, type, null, mType, new MessageImpl());
        assertSame("Unexpected provider found", provider, reader.getClass());
    
        MessageBodyWriter writer = pf.createMessageBodyWriter(type, type, null, mType, new MessageImpl());
        assertTrue("Unexpected provider found", provider == writer.getClass());
    }

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    public <T> MessageBodyReader<T> getMessageBodyReader(Class<T> c, Type t, 
            Annotation[] as, 
            MediaType mediaType) {


        MessageBodyReader reader;


        if(!customReaderProviders.isEmpty()) {
            reader = _getMessageBodyReader(c, t, as, mediaType, customReaderProviders);
            if(reader != null)
                return reader;

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