Examples of javax.ws.rs.ext.MessageBodyReader.readFrom()

javax.ws.rs.ext.MessageBodyReader.readFrom()
Read a type from the {@link InputStream}. @param type the type that is to be read from the entity stream. @param genericType the type of instance to be produced. E.g. if themessage body is to be converted into a method parameter, this will be the formal type of the method parameter as returned by {@code Method.getGenericParameterTypes}. @param annotations an array of the annotations on the declaration of theartifact that will be initialized with the produced instance. E.g. if the message body is to be converted into a method parameter, this will be the annotations on that parameter returned by {@code Method.getParameterAnnotations}. @param mediaType the media type of the HTTP entity. @param httpHeaders the read-only HTTP headers associated with HTTP entity. @param entityStream the {@link InputStream} of the HTTP entity. Thecaller is responsible for ensuring that the input stream ends when the entity has been consumed. The implementation should not close the input stream. @return the type that was read from the stream. @throws java.io.IOException if an IO error arises @throws javax.ws.rs.WebApplicationException if a specific HTTP error response needs to be produced. Only effective if thrown prior to the response being committed.

            ProviderFactory.getInstance().createMessageBodyReader(
                cls, type, anns, contentType, inMessage);
        }
        if (mbr != null) {
            try {
                return mbr.readFrom(cls, type, anns, contentType, 
                       new MetadataMap<String, Object>(r.getMetadata(), true, true), conn.getInputStream());
            } catch (Exception ex) {
                throw new WebApplicationException();
            }

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                                         type,
                                         m);
            if (provider != null) {
                try {
                    HttpHeaders headers = new HttpHeadersImpl(m);
                    return provider.readFrom(
                              targetTypeClass, parameterType, parameterAnnotations, contentType,
                              headers.getRequestHeaders(), is);
                } catch (IOException e) {
                    String errorMessage = "Error deserializing input stream into target class "
                                          + targetTypeClass.getSimpleName()

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      MultivaluedMap<String, String> form = new MultivaluedMapImpl();      
      try {
         MessageBodyReader reader =
            context.getProviders().getMessageBodyReader(MultivaluedMap.class, formType, null, contentType);
         if (reader != null) {
            form = (MultivaluedMap<String, String>)reader.readFrom(MultivaluedMap.class, formType, null, contentType, context
               .getHttpHeaders().getRequestHeaders(), context.getContainerRequest().getEntityStream());
         }
      } catch (Exception e) {         
      }

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            if (reader == null) {
                return null;
            }
            
            return (T)reader.readFrom(entityCls, entityCls, annotations, mt, 
                                      (MultivaluedMap<String, String>)headers, 
                                      inputStream);
        } catch (Exception ex) {
            throw new ClientWebApplicationException(ex);
        }

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        MessageBodyReader mbr = ProviderFactory.getInstance(outMessage).createMessageBodyReader(
            cls, type, anns, contentType, outMessage);
        if (mbr != null) {
            try {
                return mbr.readFrom(cls, type, anns, contentType, 
                       new MetadataMap<String, Object>(r.getMetadata(), true, true), inputStream);
            } catch (Exception ex) {
                reportMessageHandlerProblem("MSG_READER_PROBLEM", cls, contentType, ex, r);
            }
        } else if (cls == Response.class) {

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                                         type,
                                         m);
            if (provider != null) {
                try {
                    HttpHeaders headers = new HttpHeadersImpl(m);
                    return provider.readFrom(
                              targetTypeClass, parameterType, parameterAnnotations, contentType,
                              headers.getRequestHeaders(), is);
                } catch (IOException e) {
                    String errorMessage = "Error deserializing input stream into target class "
                                          + targetTypeClass.getSimpleName()

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    @SuppressWarnings({ "unchecked", "rawtypes" })
    @Test
    public void testReadFrom() throws Exception {
        MessageBodyReader p = new BinaryDataProvider();
        byte[] bytes = (byte[])p.readFrom(byte[].class, null, null, 
                                          null, null, new ByteArrayInputStream("hi".getBytes()));
        assertTrue(Arrays.equals(new String("hi").getBytes(), bytes));
        
        InputStream is = (InputStream)p.readFrom(InputStream.class, null, null, null, null, 
            new ByteArrayInputStream("hi".getBytes()));

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        MessageBodyReader p = new BinaryDataProvider();
        byte[] bytes = (byte[])p.readFrom(byte[].class, null, null, 
                                          null, null, new ByteArrayInputStream("hi".getBytes()));
        assertTrue(Arrays.equals(new String("hi").getBytes(), bytes));
        
        InputStream is = (InputStream)p.readFrom(InputStream.class, null, null, null, null, 
            new ByteArrayInputStream("hi".getBytes()));
        bytes = IOUtils.readBytesFromStream(is);
        assertTrue(Arrays.equals(new String("hi").getBytes(), bytes));
        
        Reader r = (Reader)p.readFrom(Reader.class, null, null,

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        InputStream is = (InputStream)p.readFrom(InputStream.class, null, null, null, null, 
            new ByteArrayInputStream("hi".getBytes()));
        bytes = IOUtils.readBytesFromStream(is);
        assertTrue(Arrays.equals(new String("hi").getBytes(), bytes));
        
        Reader r = (Reader)p.readFrom(Reader.class, null, null, 
                       MediaType.valueOf("text/xml"), null, new ByteArrayInputStream("hi".getBytes()));
        assertEquals(IOUtils.toString(r), "hi");
    }
    
    @SuppressWarnings({ "unchecked", "rawtypes" })

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            ProviderFactory.getInstance().createMessageBodyReader(
                cls, type, anns, contentType, inMessage);
        }
        if (mbr != null) {
            try {
                return mbr.readFrom(cls, type, anns, contentType, r.getMetadata(), conn.getInputStream());
            } catch (Exception ex) {
                throw new WebApplicationException();
            }
             
        } else {

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