Example usage for com.fasterxml.jackson.core JsonToken FIELD_NAME

Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonToken FIELD_NAME.

Prototype

JsonToken FIELD_NAME

To view the source code for com.fasterxml.jackson.core JsonToken FIELD_NAME.

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Document

FIELD_NAME is returned when a String token is encountered as a field name (same lexical value, different function)

Usage

From source file:org.ojai.beans.jackson.DocumentParser.java

@Override
public JsonToken nextToken() throws IOException, JsonParseException {
    if (tokens.isEmpty() && (_currEventType = r.next()) != null) {
        if (r.inMap() && r.getFieldName() != null && _currEventType != EventType.END_MAP
                && _currEventType != EventType.END_ARRAY) {
            tokens.add(JsonToken.FIELD_NAME);
        }/*  w  ww . ja v  a2 s .  c  om*/

        switch (_currEventType) {
        case START_ARRAY:
            tokens.add(JsonToken.START_ARRAY);
            break;
        case END_ARRAY:
            tokens.add(JsonToken.END_ARRAY);
            break;
        case START_MAP:
            tokens.add(JsonToken.START_OBJECT);
            break;
        case END_MAP:
            tokens.add(JsonToken.END_OBJECT);
            break;
        case NULL:
            tokens.add(JsonToken.VALUE_NULL);
            break;
        case STRING:
            tokens.add(JsonToken.VALUE_STRING);
            break;
        case BYTE:
        case SHORT:
        case INT:
        case LONG:
            tokens.add(JsonToken.VALUE_NUMBER_INT);
            break;
        case DECIMAL:
        case DOUBLE:
        case FLOAT:
            tokens.add(JsonToken.VALUE_NUMBER_FLOAT);
            break;
        case BOOLEAN:
            tokens.add(r.getBoolean() ? JsonToken.VALUE_TRUE : JsonToken.VALUE_FALSE);
            break;
        case DATE:
        case TIME:
        case TIMESTAMP:
        case INTERVAL:
        case BINARY:
            tokens.add(JsonToken.VALUE_EMBEDDED_OBJECT);
            break;
        }
    }
    _currToken = tokens.isEmpty() ? JsonToken.NOT_AVAILABLE : tokens.remove();
    return _currToken;
}

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From source file:com.google.openrtb.json.OpenRtbJsonUtils.java

/**
 * Skips a field name if necessary, returning the current token then.
 *//*  www. ja  v a2s  .  co  m*/
public static JsonToken peekToken(JsonParser par) throws IOException {
    JsonToken token = par.getCurrentToken();
    if (token == null || token == JsonToken.FIELD_NAME) {
        token = par.nextToken();
    }
    return token;
}

---

From source file:org.mashti.jetson.util.JsonParserUtil.java

/**
 * Consumes the next token from a JSON stream and checks that the token is a {@link JsonToken#FIELD_NAME}.
 * Throws {@link JsonParseException} if the token is not a {@link JsonToken#FIELD_NAME}.
 *
 * @param parser the parser to read from
 * @return the field name//from  w  w  w . ja  v  a2  s. c o m
 * @throws IOException Signals that an I/O exception has occurred.
 */
private static String nextFieldName(final JsonParser parser) throws IOException {

    if (parser.nextToken() == JsonToken.FIELD_NAME) {
        return parser.getCurrentName();
    }
    throw new JsonParseException("expected some field name", parser.getCurrentLocation());
}

---

From source file:org.datagator.api.client.MatrixDeserializer.java

@Override
public SimpleMatrix deserialize(JsonParser jp, DeserializationContext cntx)
        throws IOException, JsonProcessingException {
    int rowsCount = -1;
    int columnsCount = -1;
    int bodyRow = -1;
    int bodyColumn = -1;

    ArrayList<ArrayList<Object>> columnHeaders = null;

    JsonToken token = jp.getCurrentToken(); // FIELD_NAME
    if (!token.equals(JsonToken.FIELD_NAME)) {
        throw new RuntimeException(String.format("Unexpected token %s", token));
    }//from   w ww  .  ja  v  a  2s  .co m
    while (token.equals(JsonToken.FIELD_NAME)) {
        String name = jp.getText();
        token = jp.nextToken();
        if (name.equals("columnHeaders")) {
            if (!token.equals(JsonToken.VALUE_NUMBER_INT)) {
                throw new RuntimeException(String.format("Unexpected token %s", token));
            }
            bodyRow = jp.getIntValue();
        } else if (name.equals("rowHeaders")) {
            if (!token.equals(JsonToken.VALUE_NUMBER_INT)) {
                throw new RuntimeException(String.format("Unexpected token %s", token));
            }
            bodyColumn = jp.getIntValue();
        } else if (name.equals("rows")) {
            if (bodyRow < 0 || bodyColumn < 0) {
                throw new RuntimeException(
                        "Unexpected property order 'columnHeaders' and 'rowHeaders' should precede 'rows'.");
            }
            columnHeaders = parseRows(jp, bodyRow, bodyColumn);
        } else if (name.equals("rowsCount")) {
            if (!token.equals(JsonToken.VALUE_NUMBER_INT)) {
                throw new RuntimeException(String.format("Unexpected token %s", token));
            }
            rowsCount = jp.getIntValue();
        } else if (name.equals("columnsCount")) {
            if (!token.equals(JsonToken.VALUE_NUMBER_INT)) {
                throw new RuntimeException(String.format("Unexpected token %s", token));
            }
            columnsCount = jp.getIntValue();
        } else {
            throw new RuntimeException(String.format("Unexpected property '%s'", name));
        }
        token = jp.nextToken(); // FIELD_NAME
    }

    if (!(0 <= bodyRow && bodyRow <= rowsCount)) {
        throw new RuntimeException("Invalid Matrix shape");
    }

    if (!(0 <= bodyColumn && bodyColumn <= columnsCount)) {
        throw new RuntimeException("Invalid Matrix shape");
    }

    // special case: size of empty matrix is 1 x 0
    if ((columnsCount == 0) && (rowsCount != 1)) {
        throw new RuntimeException("Invalid Matrix shape");
    }

    Object[][] rows = new Object[bodyRow][];
    for (int r = 0; r < bodyRow; r++) {
        rows[r] = columnHeaders.get(r).toArray();
    }

    return new SimpleMatrix(bodyRow, bodyColumn, rows, rowsCount, columnsCount);
}

---

From source file:org.jsfr.json.JacksonParserTest.java

@Test
public void testLargeJsonJackson() throws Exception {
    final AtomicLong counter = new AtomicLong();
    ObjectMapper om = new ObjectMapper();
    JsonFactory f = new JsonFactory();
    JsonParser jp = f.createParser(read("allthethings.json"));
    long start = System.currentTimeMillis();
    jp.nextToken();/*ww  w.ja  v a2  s  .  com*/
    jp.nextToken();
    jp.nextToken();
    while (jp.nextToken() == JsonToken.FIELD_NAME) {
        if (jp.nextToken() == JsonToken.START_OBJECT) {
            TreeNode tree = om.readTree(jp);
            counter.incrementAndGet();
            LOGGER.trace("value: {}", tree);
        }
    }
    jp.close();
    LOGGER.info("Jackson processes {} value in {} millisecond", counter.get(),
            System.currentTimeMillis() - start);
}

---

From source file:ai.susi.geo.GeoJsonReader.java

@Override
public void run() {
    // using a streamparser to be able to handle very large input files
    try {//from  ww  w .  java2s . c om
        JsonToken token;
        while (!parser.isClosed() && (token = parser.nextToken()) != null && token != JsonToken.END_OBJECT) {
            String name = parser.getCurrentName();

            if (JsonToken.FIELD_NAME.equals(token) && "type".equals(name)) {
                parser.nextToken();
                //System.out.println(parser.getText());
                continue;
            }

            if (JsonToken.FIELD_NAME.equals(token) && "features".equals(name)) {
                token = parser.nextToken();
                if (!JsonToken.START_ARRAY.equals(token))
                    break;
                while (!parser.isClosed() && (token = parser.nextToken()) != null
                        && token != JsonToken.END_ARRAY) {
                    Feature feature = new Feature(parser);
                    //System.out.println(feature.toString());
                    try {
                        this.featureQueue.put(feature);
                    } catch (InterruptedException e) {
                        Log.getLog().warn(e);
                    }
                }
            }
        }
    } catch (IOException e) {
        Log.getLog().warn(e);
    } finally {
        for (int i = 0; i < this.concurrency; i++) {
            try {
                this.featureQueue.put(POISON_FEATURE);
            } catch (InterruptedException e) {
            }
        }
    }
}

---

From source file:com.kaaprotech.satu.jackson.SatuDeserializers.java

@Override
public JsonDeserializer<?> findMapDeserializer(final MapType type, final DeserializationConfig config,
        BeanDescription beanDesc, final KeyDeserializer keyDeserializer,
        final TypeDeserializer elementTypeDeserializer, final JsonDeserializer<?> elementDeserializer)
        throws JsonMappingException {

    if (ImmutableMap.class.isAssignableFrom(type.getRawClass())) {
        return new StdDeserializer<Object>(type) {
            private static final long serialVersionUID = 1L;

            @Override/*from   w ww. java 2 s. c  o  m*/
            public Object deserialize(JsonParser jp, DeserializationContext context) throws IOException {

                JsonToken t = jp.getCurrentToken();
                if (t == JsonToken.START_OBJECT) {
                    t = jp.nextToken();
                }
                if (t != JsonToken.FIELD_NAME && t != JsonToken.END_OBJECT) {
                    throw context.mappingException(type.getRawClass());
                }

                MutableMap<Object, Object> m = Maps.mutable.of();

                for (; jp.getCurrentToken() == JsonToken.FIELD_NAME; jp.nextToken()) {
                    // Pointing to field name
                    String fieldName = jp.getCurrentName();
                    Object key = (keyDeserializer == null) ? fieldName
                            : keyDeserializer.deserializeKey(fieldName, context);
                    t = jp.nextToken();

                    Object value;
                    if (t == JsonToken.VALUE_NULL) {
                        value = null;
                    } else if (elementDeserializer == null) {
                        value = jp.readValueAs(type.getContentType().getRawClass());
                    } else if (elementTypeDeserializer == null) {
                        value = elementDeserializer.deserialize(jp, context);
                    } else {
                        value = elementDeserializer.deserializeWithType(jp, context, elementTypeDeserializer);
                    }
                    m.put(key, value);
                }
                return m.toImmutable();
            }
        };
    }

    return super.findMapDeserializer(type, config, beanDesc, keyDeserializer, elementTypeDeserializer,
            elementDeserializer);
}

---

From source file:com.opentable.jaxrs.StreamedJsonResponseConverter.java

private <T> void doRead(Callback<T> callback, TypeReference<T> type, final JsonParser jp) throws IOException {
    expect(jp, jp.nextToken(), JsonToken.START_OBJECT);
    expect(jp, jp.nextToken(), JsonToken.FIELD_NAME);
    if (!"results".equals(jp.getCurrentName())) {
        throw new JsonParseException("expecting results field", jp.getCurrentLocation());
    }//from  w  w w .  ja  va2  s  .  c  o  m
    expect(jp, jp.nextToken(), JsonToken.START_ARRAY);
    // As noted in a well-hidden comment in the MappingIterator constructor,
    // readValuesAs requires the parser to be positioned after the START_ARRAY
    // token with an empty current token
    jp.clearCurrentToken();

    Iterator<T> iter = jp.readValuesAs(type);

    while (iter.hasNext()) {
        try {
            callback.call(iter.next());
        } catch (CallbackRefusedException e) {
            LOG.debug("callback refused execution, finishing.", e);
            return;
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            throw new IOException("Callback interrupted", e);
        } catch (Exception e) {
            Throwables.propagateIfPossible(e, IOException.class);
            throw new IOException("Callback failure", e);
        }
    }
    if (jp.nextValue() != JsonToken.VALUE_TRUE || !jp.getCurrentName().equals("success")) {
        throw new IOException("Streamed receive did not terminate normally; inspect server logs for cause.");
    }
}

---

From source file:com.cinnober.msgcodec.json.TypeScannerJsonParserTest.java

private void assertNextField(String expFieldName, JsonParser p) throws IOException {
    assertEquals(JsonToken.FIELD_NAME, p.nextToken());
    assertEquals(expFieldName, p.getText());
}

---

From source file:org.mongojack.internal.stream.DBDecoderBsonParser.java

public boolean handleUnknownProperty(DeserializationContext ctxt, JsonDeserializer<?> deserializer,
        Object beanOrClass, String propertyName) throws IOException {
    if (propertyName.startsWith("$") || propertyName.equals("code")) {
        // It's a special server response
        JsonToken token = getCurrentToken();
        if (token == JsonToken.FIELD_NAME) {
            token = nextToken();/*from w  w w. j  av a  2 s .  c om*/
        }
        if (token == JsonToken.START_ARRAY || token == JsonToken.START_OBJECT) {
            // The server shouldn't be returning arrays or objects as the
            // response, skip all children
            skipChildren();
        }
        // Store the value, whatever type it happens to be
        dbObject.put(propertyName, getEmbeddedObject());
        return true;
    }
    return false;
}

---

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