Java Code Examples for javax.json.stream.JsonParser#Event

The following examples show how to use javax.json.stream.JsonParser#Event . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: BookDeserializer.java    From Java-EE-8-Sampler with MIT License 6 votes vote down vote up 
@Override
public Book deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
    Book book = null;
    while (parser.hasNext()) {
        JsonParser.Event event = parser.next();
        if (event == JsonParser.Event.KEY_NAME) {
            String className = parser.getString();
            parser.next();
            try {
                book = ctx.deserialize(Class.forName(className).asSubclass(Book.class), parser);
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            }
        }
    }
    return book;
}
Example 2
Source File: JsonpReader.java    From incubator-batchee with Apache License 2.0 6 votes vote down vote up 
@Override
public void open(final Serializable checkpoint) throws Exception {
    final ClassLoader loader = Thread.currentThread().getContextClassLoader();
    final JsonProvider provider = this.provider == null ? JsonProvider.provider() : JsonProvider.class.cast(loader.loadClass(this.provider));
    parser = provider.createParser(new FileInputStream(file));
    reader = new JsonPartialReader(provider, parser);

    if (skipRoot == null || "true".equalsIgnoreCase(skipRoot)) {
        final JsonParser.Event event = parser.next();
        if (event == JsonParser.Event.START_ARRAY) {
            end = JsonParser.Event.END_ARRAY;
        } else {
            end = JsonParser.Event.END_OBJECT;
        }
    }
    super.open(checkpoint);
}
Example 3
Source File: WeatherServiceTest.java    From tomee with Apache License 2.0 6 votes vote down vote up 
private List<JsonItem> convertToMap(String s) {
    JsonParser expectedParser = Json.createParser(new StringReader(s));
    List<JsonItem> list = new ArrayList<>();
    while (expectedParser.hasNext()) {
        JsonParser.Event event = expectedParser.next();
        switch (event) {
            case KEY_NAME:
            case VALUE_STRING:
            case VALUE_NUMBER:
                list.add(new JsonItem(event, expectedParser.getValue().toString()));
                break;
            default:
                list.add(new JsonItem(event));
        }
    }
    return list;
}
Example 4
Source File: Client.java    From webex-java-sdk with MIT License 6 votes vote down vote up 
public <T> LinkedResponse<List<T>> paginate(final Class<T> clazz, URL url) {
    LinkedResponse.BodyCreator<List<T>> function = new LinkedResponse.BodyCreator<List<T>>() {
        @Override
        public List<T> create(InputStream istream) {
            JsonParser parser = Json.createParser(istream);
            Client.this.scrollToItemsArray(parser);

            List<T> result = new ArrayList<T>();
            for (JsonParser.Event event = parser.next();
                 event == JsonParser.Event.START_OBJECT;
                 event = parser.next()) {
                result.add(readObject(clazz, parser));
            }
            return result;
        }
    };

    try {
        return new LinkedResponse<List<T>>(this, url, function);
    } catch (IOException e) {
        throw new SparkException("io error", e);
    }
}
Example 5
Source File: AuctionDataItemReader.java    From wow-auctions with GNU General Public License v3.0 5 votes vote down vote up 
@Override
public Object readItem() throws Exception {
    while (parser.hasNext()) {
        JsonParser.Event event = parser.next();
        Auction auction = new Auction();
        switch (event) {
            case KEY_NAME:
                if (readAuctionItem(auction)) {
                    return auction;
                }
                break;
        }
    }
    return null;
}
Example 6
Source File: JsonPartialReader.java    From incubator-batchee with Apache License 2.0 5 votes vote down vote up 
public JsonStructure read(final JsonParser.Event event) {
    switch (event) {
        case START_OBJECT:
            final JsonObjectBuilder objectBuilder = provider.createObjectBuilder();
            parseObject(objectBuilder);
            return objectBuilder.build();
        case START_ARRAY:
            final JsonArrayBuilder arrayBuilder = provider.createArrayBuilder();
            parseArray(arrayBuilder);
            return arrayBuilder.build();
        default:
            throw new JsonParsingException("Unknown structure: " + parser.next(), parser.getLocation());
    }

}
Example 7
Source File: JsonpReader.java    From incubator-batchee with Apache License 2.0 5 votes vote down vote up 
@Override
protected Object doRead() throws Exception {
    JsonParser.Event event;
    do {
        event = parser.next();
    } while (
        (event != JsonParser.Event.START_OBJECT && event != end) ||
        (end == null && (event == JsonParser.Event.END_ARRAY ||
        event == JsonParser.Event.END_OBJECT)));
    if (!parser.hasNext()) {
        return null;
    }

    return reader.read(event);
}
Example 8
Source File: FEreturn.java    From fido2 with GNU Lesser General Public License v2.1 5 votes vote down vote up 
/**
 * Returns a pretty Json
 * @param Input
 * @return
 */
public String returnJSON(String Input) {
    String JSON_FORMAT_STRING = "%-10s";
    JsonParserFactory factory = Json.createParserFactory(null);

    StringBuilder sb;
    try (JsonParser parser = factory.createParser(new StringReader(Input))) {
        sb = new StringBuilder();
        sb.append("\n\t{\n");
        while (parser.hasNext()) {
            JsonParser.Event event = parser.next();

            switch (event) {
                case KEY_NAME: {
                    sb.append("\t\t\"");
                    sb.append(String.format(JSON_FORMAT_STRING, parser.getString()));
                    sb.append("\" : \"");
                    break;
                }
                case VALUE_STRING: {
                    sb.append(parser.getString()).append("\",\n");
                    break;
                }
            }
        }   sb.append("\t}");
    }

    return sb.toString();
}
Example 9
Source File: Client.java    From webex-java-sdk with MIT License 5 votes vote down vote up 
private void scrollToItemsArray(JsonParser parser) {
    JsonParser.Event event;
    while (parser.hasNext()) {
        event = parser.next();
        if (event == JsonParser.Event.KEY_NAME &&  parser.getString().equals("items")) {
            break;
        }
    }

    event = parser.next();
    if (event != JsonParser.Event.START_ARRAY) {
        throw new SparkException("bad json");
    }
}
Example 10
Source File: ActionMessage.java    From sample.daytrader7 with Apache License 2.0 5 votes vote down vote up 
public void doDecoding(String jsonText) {
          
    String keyName = null;
    try 
    {
        // JSON parse
        JsonParser parser = Json.createParser(new StringReader(jsonText));
        while (parser.hasNext()) {
            JsonParser.Event event = parser.next();
            switch(event) {
            case KEY_NAME:
                keyName=parser.getString();
                break;
            case VALUE_STRING:
                if (keyName != null && keyName.equals("action")) {
                    decodedAction=parser.getString();
                }
                break;
            default:
                break;
            }
        }
    } catch (Exception e) {
        Log.error("ActionMessage:doDecoding(" + jsonText + ") --> failed", e);
    }
    
    if (Log.doTrace()) {
        if (decodedAction != null ) {
            Log.trace("ActionMessage:doDecoding -- decoded action -->" + decodedAction + "<--");
        } else {
            Log.trace("ActionMessage:doDecoding -- decoded action -->null<--");
        }
    }
    
}
Example 11
Source File: JsonpTest.java    From ee8-sandbox with Apache License 2.0 5 votes vote down vote up 
@Test
public void testJsonParser() {
    String key = "";
    String value = "";
    JsonParser parser = Json.createParser(JsonpTest.class.getResourceAsStream("/person.json"));
    while (parser.hasNext()) {
        JsonParser.Event e = parser.next();
        System.out.print(e.name());

        switch (e) {
            case START_ARRAY:
                if (key.equals("phoneNumbers")) {
                    parser.skipArray();
                }
                break;
            case KEY_NAME:
                key = parser.getString();
                System.out.print(" - " + parser.getString());
                break;
            case VALUE_STRING:
                System.out.print(" - " + parser.getString());
                if ("name".equals(key)) {
                    value = parser.getString();
                }
        }

        System.out.println();
    }

    assertEquals("Duke", value);
}
Example 12
Source File: BookDeserializer.java    From Java-EE-8-Sampler with MIT License 5 votes vote down vote up 
@Override
public String deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
    while (parser.hasNext()) {
        JsonParser.Event event = parser.next();
        if (event == JsonParser.Event.KEY_NAME) {
            String keyName = parser.getString();
            if (keyName.equals("id")) {
                return ctx.deserialize(String.class, parser);
            }
        }
        parser.next();
    }
    return "";
}
Example 13
Source File: WeatherServiceTest.java    From tomee with Apache License 2.0 4 votes vote down vote up 
JsonItem(JsonParser.Event event) {
    this.event = event;
}
Example 14
Source File: WeatherServiceTest.java    From tomee with Apache License 2.0 4 votes vote down vote up 
JsonItem(JsonParser.Event event, String value) {
    this.event = event;
    this.value = value;
}
Example 15
Source File: PingJSONP.java    From sample.daytrader7 with Apache License 2.0 4 votes vote down vote up 
/**
 * this is the main method of the servlet that will service all get
 * requests.
 *
 * @param request
 *            HttpServletRequest
 * @param responce
 *            HttpServletResponce
 **/
@Override
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    try {
        res.setContentType("text/html");

        ServletOutputStream out = res.getOutputStream();
        
        hitCount++;
        
        // JSON generate
        StringWriter sw = new StringWriter();
        JsonGenerator generator = Json.createGenerator(sw);
         
        generator.writeStartObject();
        generator.write("initTime",initTime);
        generator.write("hitCount", hitCount);
        generator.writeEnd();
        generator.flush();
        
        String generatedJSON =  sw.toString();
        StringBuffer parsedJSON = new StringBuffer(); 
        
        // JSON parse
        JsonParser parser = Json.createParser(new StringReader(generatedJSON));
        while (parser.hasNext()) {
           JsonParser.Event event = parser.next();
           switch(event) {
              case START_ARRAY:
              case END_ARRAY:
              case START_OBJECT:
              case END_OBJECT:
              case VALUE_FALSE:
              case VALUE_NULL:
              case VALUE_TRUE:
                 break;
              case KEY_NAME:
                  parsedJSON.append(parser.getString() + ":");
                 break;
              case VALUE_STRING:
              case VALUE_NUMBER:
                  parsedJSON.append(parser.getString() + " ");
                 break;
           }
        }
        
        out.println("<html><head><title>Ping JSONP</title></head>"
                + "<body><HR><BR><FONT size=\"+2\" color=\"#000066\">Ping JSONP</FONT><BR>Generated JSON: " + generatedJSON + "<br>Parsed JSON: " + parsedJSON + "</body></html>");
    } catch (Exception e) {
        Log.error(e, "PingJSONP.doGet(...): general exception caught");
        res.sendError(500, e.toString());

    }
}
Example 16
Source File: JsonPartialReader.java    From incubator-batchee with Apache License 2.0 4 votes vote down vote up 
private void parseObject(final JsonObjectBuilder builder) {
    String key = null;
    while (parser.hasNext()) {
        final JsonParser.Event next = parser.next();
        switch (next) {
            case KEY_NAME:
                key = parser.getString();
                break;

            case VALUE_STRING:
                builder.add(key, parser.getString());
                break;

            case START_OBJECT:
                final JsonObjectBuilder subObject = provider.createObjectBuilder();
                parseObject(subObject);
                builder.add(key, subObject);
                break;

            case START_ARRAY:
                final JsonArrayBuilder subArray = provider.createArrayBuilder();
                parseArray(subArray);
                builder.add(key, subArray);
                break;

            case VALUE_NUMBER:
                if (parser.isIntegralNumber()) {
                    builder.add(key, parser.getLong());
                } else {
                    builder.add(key, parser.getBigDecimal());
                }
                break;

            case VALUE_NULL:
                builder.addNull(key);
                break;

            case VALUE_TRUE:
                builder.add(key, true);
                break;

            case VALUE_FALSE:
                builder.add(key, false);
                break;

            case END_OBJECT:
                return;

            case END_ARRAY:
                throw new JsonParsingException("']', shouldn't occur", parser.getLocation());

            default:
                throw new JsonParsingException(next.name() + ", shouldn't occur", parser.getLocation());
        }
    }
}
Example 17
Source File: JsonPartialReader.java    From incubator-batchee with Apache License 2.0 4 votes vote down vote up 
private void parseArray(final JsonArrayBuilder builder) {
    while (parser.hasNext()) {
        final JsonParser.Event next = parser.next();
        switch (next) {
            case VALUE_STRING:
                builder.add(parser.getString());
                break;

            case VALUE_NUMBER:
                if (parser.isIntegralNumber()) {
                    builder.add(parser.getLong());
                } else {
                    builder.add(parser.getBigDecimal());
                }
                break;

            case START_OBJECT:
                JsonObjectBuilder subObject = provider.createObjectBuilder();
                parseObject(subObject);
                builder.add(subObject);
                break;

            case START_ARRAY:
                JsonArrayBuilder subArray = provider.createArrayBuilder();
                parseArray(subArray);
                builder.add(subArray);
                break;

            case END_ARRAY:
                return;

            case VALUE_NULL:
                builder.addNull();
                break;

            case VALUE_TRUE:
                builder.add(true);
                break;

            case VALUE_FALSE:
                builder.add(false);
                break;

            case KEY_NAME:
                throw new JsonParsingException("array doesn't have keys", parser.getLocation());

            case END_OBJECT:
                throw new JsonParsingException("'}', shouldn't occur", parser.getLocation());

            default:
                throw new JsonParsingException(next.name() + ", shouldn't occur", parser.getLocation());
        }
    }
}