Examples of org.codehaus.jackson.JsonParser

org.codehaus.jackson.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

      throws IOException {
  
      this.depth = depth;
      byte[] in = input.getBytes("UTF-8");
      JsonFactory f = new JsonFactory();
      JsonParser p = f.createJsonParser(
          new ByteArrayInputStream(input.getBytes("UTF-8")));
      
      ByteArrayOutputStream os = new ByteArrayOutputStream();
      Encoder cos = new BlockingBinaryEncoder(os, bufferSize);
      serialize(cos, p, os);

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    private <T> T parseContent(InputStream content, String string) {
        Map<String, Object> map = Collections.emptyMap();


        try {
            // create parser manually to lower Jackson requirements
            JsonParser jsonParser = mapper.getJsonFactory().createJsonParser(content);
            try {
                map = mapper.readValue(jsonParser, Map.class);
            } finally {
                countStreamStats(content);
            }

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    @SuppressWarnings("rawtypes")
    private boolean retryFailedEntries(InputStream content, TrackingBytesArray data) {
        try {
            ObjectReader r = JsonFactory.objectReader(mapper, Map.class);
            JsonParser parser = mapper.getJsonFactory().createJsonParser(content);
            try {
                if (ParsingUtils.seek("items", new JacksonJsonParser(parser)) == null) {
                    // recorded bytes are ack here
                    stats.bytesAccepted += data.length();
                    stats.docsAccepted += data.entries();

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    public static int importSorted(String jsonFile, ColumnFamily columnFamily, String ssTablePath, IPartitioner<?> partitioner) throws IOException
    {
        int importedKeys = 0; // already imported keys count
        long start = System.currentTimeMillis();


        JsonParser parser = getParser(jsonFile);


        if (keyCountToImport == null)
        {
            keyCountToImport = 0;
            System.out.println("Counting keys to import, please wait... (NOTE: to skip this use -n <num_keys>)");


            parser.nextToken(); // START_OBJECT
            while (parser.nextToken() != null)
            {
                parser.nextToken();
                parser.skipChildren();
                if (parser.getCurrentName() == null) continue;


                keyCountToImport++;
            }
        }


        System.out.printf("Importing %s keys...%n", keyCountToImport);


        parser = getParser(jsonFile); // renewing parser
        SSTableWriter writer = new SSTableWriter(ssTablePath, keyCountToImport);


        int lineNumber = 1;
        DecoratedKey prevStoredKey = null;


        while (parser.nextToken() != null)
        {
            String key = parser.getCurrentName();


            if (key != null)
            {
                String tokenName = parser.nextToken().name();


                if (tokenName.equals("START_ARRAY"))
                {
                    if (columnFamily.getColumnFamilyType() == ColumnFamilyType.Super)
                    {
                        throw new RuntimeException("Can't write Standard columns to the Super Column Family.");
                    }


                    List<?> columns = parser.readValueAs(new TypeReference<List<?>>() {});
                    addToStandardCF(columns, columnFamily);
                }
                else if (tokenName.equals("START_OBJECT"))
                {
                    if (columnFamily.getColumnFamilyType() == ColumnFamilyType.Standard)
                    {
                        throw new RuntimeException("Can't write Super columns to the Standard Column Family.");
                    }


                    Map<?, ?> columns = parser.readValueAs(new TypeReference<Map<?, ?>>() {});
                    addToSuperCF(columns, columnFamily);
                }
                else
                {
                    throw new UnsupportedOperationException("Only Array or Hash allowed as row content.");

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    result.add(new JsonElement(null));
    return result;
  }


  private JsonParser makeParser(final List<JsonElement> elements) throws IOException {
    return new JsonParser() {
      int pos = 0;


      @Override
      public ObjectCodec getCodec() {
        throw new UnsupportedOperationException();

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    public static int importSorted(String jsonFile, ColumnFamily columnFamily, String ssTablePath, IPartitioner<?> partitioner) throws IOException
    {
        int importedKeys = 0; // already imported keys count
        long start = System.currentTimeMillis();


        JsonParser parser = getParser(jsonFile);


        if (keyCountToImport == null)
        {
            keyCountToImport = 0;
            System.out.println("Counting keys to import, please wait... (NOTE: to skip this use -n <num_keys>)");


            parser.nextToken(); // START_OBJECT
            while (parser.nextToken() != null)
            {
                parser.nextToken();
                parser.skipChildren();
                if (parser.getCurrentName() == null) continue;


                keyCountToImport++;
            }
        }


        System.out.printf("Importing %s keys...%n", keyCountToImport);


        parser = getParser(jsonFile); // renewing parser
        SSTableWriter writer = new SSTableWriter(ssTablePath, keyCountToImport);


        int lineNumber = 1;
        DecoratedKey prevStoredKey = null;


        while (parser.nextToken() != null)
        {
            String key = parser.getCurrentName();


            if (key != null)
            {
                String tokenName = parser.nextToken().name();


                if (tokenName.equals("START_ARRAY"))
                {
                    if (columnFamily.getType() == ColumnFamilyType.Super)
                    {
                        throw new RuntimeException("Can't write Standard columns to the Super Column Family.");
                    }


                    List<?> columns = parser.readValueAs(new TypeReference<List<?>>() {});
                    addToStandardCF(columns, columnFamily);
                }
                else if (tokenName.equals("START_OBJECT"))
                {
                    if (columnFamily.getType() == ColumnFamilyType.Standard)
                    {
                        throw new RuntimeException("Can't write Super columns to the Standard Column Family.");
                    }


                    Map<?, ?> columns = parser.readValueAs(new TypeReference<Map<?, ?>>() {});
                    addToSuperCF(columns, columnFamily);
                }
                else
                {
                    throw new UnsupportedOperationException("Only Array or Hash allowed as row content.");

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    final ReflectionNumericJSON pbJSON = new ReflectionNumericJSON(new Class[]{V2SpeedMedia.class});


    public MediaContent deserialize(byte[] array) throws Exception
    {
        V2SpeedMedia.MediaContent.Builder builder = V2SpeedMedia.MediaContent.newBuilder();
        JsonParser parser = pbJSON.getJsonFactory().createJsonParser(array);
        pbJSON.mergeFrom(parser, builder);
        parser.close();
        return builder.build();
    }

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    {
        StringWriter sw = new StringWriter();
        json.writeTo(sw, person);
        String generated = sw.toString();


        JsonParser parser = json.getJsonFactory().createJsonParser(generated);
        Person parsedPerson = json.parseFrom(parser, Person.class);
        parser.close();
        
        assertEquals(person, parsedPerson);        
        
        return generated;
    }

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        generator.writeEndObject();
        generator.close();
        String generated = writer.toString();
        System.out.print(generated);
        
        JsonParser parser = factory.createJsonParser(generated);
        assertTrue(parser.nextToken()==JsonToken.START_OBJECT);
        parser.nextToken();
        
        assertEquals("bool", parser.getCurrentName());
        assertTrue(parser.nextToken()==JsonToken.VALUE_TRUE);
        parser.nextToken();
        
        assertEquals("firstName", parser.getCurrentName());
        parser.nextToken();
        assertEquals("john", parser.getText());
        parser.nextToken();
        
        assertEquals("age", parser.getCurrentName());
        parser.nextToken();
        assertTrue(1==parser.getIntValue());
        parser.nextToken();
        
        assertEquals("gg", parser.getCurrentName());
        assertTrue(parser.nextToken()==JsonToken.START_OBJECT);
        parser.nextToken();
        assertEquals("firstName", parser.getCurrentName());
        parser.nextToken();
        assertEquals("john", parser.getText());
        assertTrue(parser.nextToken()==JsonToken.END_OBJECT);
        
        assertTrue(parser.nextToken()==JsonToken.END_OBJECT);
        
        parser.close();
    }

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    {
        StringWriter sw = new StringWriter();
        json.writeTo(sw, personList, Person.class);
        String generated = sw.toString();
        
        JsonParser parser = json.getJsonFactory().createJsonParser(generated);
        json.appendMessageFrom(parser, parsedPersonList, Person.class);
        parser.close();
        assertTrue(personList.size() == parsedPersonList.size());
        for(int i=0,len=personList.size(); i<len; i++)
            assertEquals(personList.get(i), parsedPersonList.get(i));

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