Examples of com.fasterxml.jackson.core.JsonParser

com.fasterxml.jackson.core.JsonParser
Base class that defines public API for reading JSON content. Instances are created using factory methods of a {@link JsonFactory} instance. @author Tatu Saloranta


  @Override
  public DataList readList(InputStream in) throws IOException
  {
    final Parser parser = new Parser();
    JsonParser jsonParser = null;
    try
    {
      jsonParser = _jsonFactory.createParser(in);
      return parser.parse(jsonParser, DataList.class);
    }

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  @Override
  public DataList readList(Reader in) throws IOException
  {
    final Parser parser = new Parser();
    JsonParser jsonParser = null;
    try
    {
      jsonParser = _jsonFactory.createParser(in);
      return parser.parse(jsonParser, DataList.class);
    }

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   */
  public List<Object> parse(InputStream in, StringBuilder mesg, Map<Object, DataLocation> locationMap)
      throws IOException
  {
    final Parser parser = new Parser(true);
    JsonParser jsonParser = null;
    try
    {
      jsonParser = _jsonFactory.createParser(in);
      return parser.parse(jsonParser, mesg, locationMap);
    }

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   */
  public List<Object> parse(Reader in, StringBuilder mesg, Map<Object, DataLocation> locationMap)
      throws IOException
  {
    final Parser parser = new Parser(true);
    JsonParser jsonParser = null;
    try
    {
      jsonParser = _jsonFactory.createParser(in);
      return parser.parse(jsonParser, mesg, locationMap);
    }

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        log.trace("Parsing service response JSON");


        String CRC32Checksum = response.getHeaders().get("x-amz-crc32");
        CRC32ChecksumCalculatingInputStream crc32ChecksumInputStream = null;


        JsonParser jsonParser = null;


        if (!needsConnectionLeftOpen) {
            if (CRC32Checksum != null) {
                crc32ChecksumInputStream = new CRC32ChecksumCalculatingInputStream(response.getContent());
                jsonParser = jsonFactory.createJsonParser(crc32ChecksumInputStream);
            } else {
                jsonParser = jsonFactory.createJsonParser(response.getContent());
            }
        }


        try {
            AmazonWebServiceResponse<T> awsResponse = new AmazonWebServiceResponse<T>();
            JsonUnmarshallerContext unmarshallerContext = new JsonUnmarshallerContext(jsonParser, response);
            registerAdditionalMetadataExpressions(unmarshallerContext);


            T result = responseUnmarshaller.unmarshall(unmarshallerContext);


            if (CRC32Checksum != null) {
                long serverSideCRC = Long.parseLong(CRC32Checksum);
                long clientSideCRC = crc32ChecksumInputStream.getCRC32Checksum();
                if (clientSideCRC != serverSideCRC) {
                    throw new CRC32MismatchException("Client calculated crc32 checksum didn't match that calculated by server side");
                }
            }


            awsResponse.setResult(result);


            Map<String, String> metadata = unmarshallerContext.getMetadata();
            metadata.put(ResponseMetadata.AWS_REQUEST_ID, response.getHeaders().get("x-amzn-RequestId"));
            awsResponse.setResponseMetadata(new ResponseMetadata(metadata));


            log.trace("Done parsing service response");
            return awsResponse;
        } finally {
            if (!needsConnectionLeftOpen) {
                try {
                    jsonParser.close();
                } catch (IOException e) {
                    log.warn("Error closing json parser", e);
                }
            }
        }

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     * Mandatory
     */
    public void read_config(InputStream in) throws Exception {


        JsonFactory f = new MappingJsonFactory();
        JsonParser jp = f.createJsonParser(in);


        JsonToken current;


        current = jp.nextToken();
        if (current != JsonToken.START_OBJECT) {
            logger.warn("read_config: Error:  START_OBJECT not found : quiting.");
            return;
        }
        current = jp.nextToken();
        String fieldName = jp.getCurrentName();
        current = jp.nextToken();
        if (fieldName.equals("config")) {
            if (current != JsonToken.START_OBJECT) {
                logger.warn("read_config: Error:  START_OBJECT not found after config : quiting.");
                return;
            }
            current = jp.nextToken();
            String fieldName2 = jp.getCurrentName();
            if (fieldName2.equals("metric_groups")) {
                current = jp.nextToken();
                if (current != JsonToken.START_ARRAY) {
                  logger.warn("read_config: Error:  START_ARRAY not found after metric_groups : quiting.");
                  return;
                }


                current = jp.nextToken();
                while (current != JsonToken.END_ARRAY) {
                    if (current != JsonToken.START_OBJECT) {
                        logger.warn("read_config: Error:  START_OBJECT not found after metric_groups START_ARRAY : quiting.");
                        return;
                    }
                    current = jp.nextToken();
                    JsonNode node1 = jp.readValueAsTree();
                    String node1string = write_tostring(node1);
                    metricgroupMap.put(node1.get("name").asText(),node1string);
                    current = jp.nextToken();
                }


                current = jp.nextToken();
                String fieldName3 = jp.getCurrentName();


                if (fieldName3.equals("dashboards")) {
                    current = jp.nextToken();
                    if (current != JsonToken.START_ARRAY) {
                        logger.warn("read_config: Error:  START_ARRAY not found after dashboards : quiting.");
                        return;
                    }
                    current = jp.nextToken();
                    while (current != JsonToken.END_ARRAY) {
                        if (current != JsonToken.START_OBJECT) {
                            logger.warn("read_config: Error:  START_OBJECT not found after dashboards START_ARRAY : quiting.");
                            return;
                        }
                        current = jp.nextToken();
                        JsonNode node = jp.readValueAsTree();
                        String nodestring = write_tostring(node);
                        dashMap.put(node.get("name").asText(),nodestring);
                        current = jp.nextToken();


                    }
                    if(jp.nextToken() != JsonToken.END_OBJECT) {
                        logger.warn("read_config: Error:  END_OBJECT expected, not found (1): quiting.");
                        return;
                    }
                    if(jp.nextToken() != JsonToken.END_OBJECT) {
                        logger.warn("read_config: Error:  END_OBJECT expected, not found (2): quiting.");
                        return;
                    }
                } else {
                    logger.warn("read_config: Error:  Expected dashboards : quiting.");

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        }
    }


    public String groupFind(String findName, String findIndex, Integer ExpectInt) throws Exception {
        JsonFactory f = new MappingJsonFactory();
        JsonParser jp = f.createJsonParser(findIndex);


        int count = 0;
        int foundit = 0;
        String Result = null;


        JsonToken current = jp.nextToken();
        if (current != JsonToken.START_ARRAY) {
          logger.warn("groupFind: Error: START_ARRAY expected, not found : quiting.");
          return(Result);
        }
        current = jp.nextToken();
        while (current != JsonToken.END_ARRAY) {
            if (current != JsonToken.START_OBJECT) {
                logger.warn("groupFind: Error: START_OBJECT expected, not found : quiting.");
                return(Result);
            }
            current = jp.nextToken();
            JsonNode node = jp.readValueAsTree();
            String tmpStr = node.get("name").asText().toString();
             if(findName.equals(node.get("name").asText().toString())) {
                if(ExpectInt != 0) {
                    foundit = node.get("id").asInt();
                    Result = String.valueOf(foundit);
                } else {
                    Result = node.get("id").asText().toString();
                }
                break;
            }
            current = jp.nextToken();
            count = count + 1;
        }
        return(Result);
    }

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        // note: we really should get merged buffer (and if not, that is likely error), but
        // for now let's allow missing case as well. Will be caught be a later stage...
        TokenBuffer buffer = (mergedBuffer == null) ? tmpBuffer : mergedBuffer;
        buffer.writeEndObject();
        // important: need to advance to point to first FIELD_NAME:
        JsonParser mergedParser = buffer.asParser();
        mergedParser.nextToken();
        return deserializeFromObject(mergedParser, ctxt);
    }

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    {
        // First: add closing END_OBJECT as marker
        unknownTokens.writeEndObject();
        
        // note: buffer does NOT have starting START_OBJECT
        JsonParser bufferParser = unknownTokens.asParser();
        while (bufferParser.nextToken() != JsonToken.END_OBJECT) {
            String propName = bufferParser.getCurrentName();
            // Unknown: let's call handler method
            bufferParser.nextToken();
            handleUnknownProperty(bufferParser, ctxt, bean, propName);
        }
        return bean;
    }

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        JsonDeserializer<Object> subDeser = _findSubclassDeserializer(ctxt, bean, unknownTokens);
        if (subDeser != null) {
            if (unknownTokens != null) {
                // need to add END_OBJECT marker first
                unknownTokens.writeEndObject();
                JsonParser p2 = unknownTokens.asParser();
                p2.nextToken(); // to get to first data field
                bean = subDeser.deserialize(p2, ctxt, bean);
            }
            // Original parser may also have some leftovers
            if (jp != null) {
                bean = subDeser.deserialize(jp, ctxt, bean);

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