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

Introduction

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

Prototype

JsonToken START_OBJECT

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Document

START_OBJECT is returned when encountering '{' which signals starting of an Object value.

Usage

From source file:org.onosproject.north.aaa.api.parser.impl.ScopeParser.java

@Override
public Set<Scope> parseJson(InputStream stream) throws IOException, ParseException {
    // begin parsing JSON to Application class
    ObjectMapper mapper = new ObjectMapper();
    JsonNode jsonNode = mapper.readTree(stream);
    JsonParser jp = jsonNode.traverse();
    Set<Scope> scopeSet = new HashSet<>();

    // continue parsing the token till the end of input is reached
    while (!jp.isClosed()) {
        // get the token
        JsonToken token = jp.nextToken();
        // if its the last token then we are done
        if (token == null) {
            break;
        }/*from   w w w . ja v a2  s. c o  m*/
        if (JsonToken.FIELD_NAME.equals(token) && "scopes".equals(jp.getCurrentName())) {
            token = jp.nextToken();
            if (!JsonToken.START_ARRAY.equals(token)) {
                // bail out
                throw new ParseException("expected ARRAY after scopes");
            }

            while (true) {
                token = jp.nextToken();
                if (JsonToken.END_ARRAY.equals(token)) {
                    // bail out
                    break;
                }
                if (JsonToken.START_OBJECT.equals(token)) {
                    Scope scope = jsonToScope(jp);
                    scopeSet.add(scope);
                }
            }
        }
    }
    return scopeSet;
}

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From source file:org.onosproject.north.aaa.api.parser.impl.ApplicationParser.java

@Override
public Set<Application> parseJson(InputStream stream) throws IOException, ParseException {
    ObjectMapper mapper = new ObjectMapper();
    JsonNode jsonNode = mapper.readTree(stream);
    JsonParser jp = jsonNode.traverse();
    Set<Application> applicationSet = new HashSet<>();

    // continue parsing the token till the end of input is reached
    while (!jp.isClosed()) {
        // get the token
        JsonToken token = jp.nextToken();
        // if its the last token then we are done
        if (token == null) {
            break;
        }//from w w w  . j ava  2  s  . c  om

        if (JsonToken.FIELD_NAME.equals(token) && "applications".equals(jp.getCurrentName())) {
            token = jp.nextToken();
            if (!JsonToken.START_ARRAY.equals(token)) {
                // bail out
                throw new ParseException("expected ARRAY after applications");
            }

            while (true) {
                token = jp.nextToken();
                if (JsonToken.END_ARRAY.equals(token)) {
                    // bail out
                    break;
                }

                if (JsonToken.START_OBJECT.equals(token)) {
                    Application app = jsonToApplication(jp);
                    applicationSet.add(app);
                }
            }
        }
    }
    return applicationSet;
}

---

From source file:org.onosproject.north.aaa.api.parser.impl.RestAccessParser.java

@Override
public Set<RestAccess> parseJson(InputStream stream) throws IOException, ParseException {
    // begin parsing JSON to Application class
    ObjectMapper mapper = new ObjectMapper();
    JsonNode jsonNode = mapper.readTree(stream);
    JsonParser jp = jsonNode.traverse();
    Set<RestAccess> restAccessSet = new HashSet<>();

    // continue parsing the token till the end of input is reached
    while (!jp.isClosed()) {
        // get the token
        JsonToken token = jp.nextToken();
        // if its the last token then we are done
        if (token == null) {
            break;
        }//from w ww  . j  a v  a  2  s.  co  m

        if (JsonToken.FIELD_NAME.equals(token) && "accesses".equals(jp.getCurrentName())) {
            token = jp.nextToken();
            if (!JsonToken.START_ARRAY.equals(token)) {
                // bail out
                throw new ParseException("expected ARRAY after accesses");
            }

            while (true) {
                token = jp.nextToken();
                if (JsonToken.END_ARRAY.equals(token)) {
                    // bail out
                    break;
                }

                if (JsonToken.START_OBJECT.equals(token)) {
                    RestAccess restAccess = jsonToRestAccess(jp);
                    restAccessSet.add(restAccess);
                }
            }
        }
    }
    return restAccessSet;
}

---

From source file:com.amazonaws.hal.client.HalJsonResourceUnmarshaller.java

@Override
public HalResource unmarshall(JsonUnmarshallerContext context) throws Exception {
    HalResource halResource = new HalResource();
    JsonToken token = context.getCurrentToken();

    if (token == null) {
        token = context.nextToken();//  w w  w. ja  va 2  s .  c  o m
    }

    while (token != null && token != JsonToken.END_OBJECT) {
        if (token == JsonToken.FIELD_NAME) {
            if (context.testExpression("_links")) {
                context.nextToken();
                halResource.setLinks(HalJsonLinksUnmarshaller.getInstance().unmarshall(context));
            } else if (context.testExpression("_embedded")) {
                context.nextToken();
                halResource.setEmbedded(HalJsonEmbeddedUnmarshaller.getInstance().unmarshall(context));
            } else {
                String property = context.readText();

                token = context.nextToken();

                if (token == JsonToken.START_OBJECT) {
                    context.nextToken();
                    halResource.addProperty(property, HalJsonMapUnmarshaller.getInstance().unmarshall(context));
                } else if (token == JsonToken.START_ARRAY) {
                    context.nextToken();
                    halResource.addProperty(property,
                            HalJsonListUnmarshaller.getInstance().unmarshall(context));
                } else {
                    halResource.addProperty(property, JsonUnmarshallerUtil.getObjectForToken(token, context));
                }
            }
        }

        token = context.nextToken();
    }

    return halResource;
}

---

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();//  w ww  .j  a  v a2  s .c  o  m
    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: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  w w.  j a  va  2 s . co 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:io.wcm.caravan.io.jsontransform.source.JacksonStreamSource.java

private JsonElement parseJsonElement(final JsonToken token) throws IOException {
    String key = parser.getCurrentName();
    if (JsonToken.START_OBJECT.equals(token)) {
        return JsonElement.DEFAULT_START_OBJECT;
    } else if (JsonToken.END_OBJECT.equals(token)) {
        return JsonElement.DEFAULT_END_OBJECT;
    } else if (JsonToken.START_ARRAY.equals(token)) {
        return JsonElement.DEFAULT_START_ARRAY;
    } else if (JsonToken.END_ARRAY.equals(token)) {
        return JsonElement.DEFAULT_END_ARRAY;
    } else if (JsonToken.FIELD_NAME.equals(token)) {
        return handleFieldName(key);
    }// w w w. jav a  2s.c o  m
    return JsonElement.value(key, parseValue(token));
}

---

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);
        }//ww  w . j  a v a 2 s  . c o m

        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;
}

---

From source file:name.gumartinm.weather.information.parser.JPOSCurrentParser.java

private void getCurrentWeatherData(final Current currentWeatherData, final JsonParser jParser)
        throws JsonParseException, IOException {
    if (jParser.nextToken() == JsonToken.START_OBJECT) {

        while (jParser.nextToken() != JsonToken.END_OBJECT) {
            final String fieldname = jParser.getCurrentName();
            final JsonToken nextToken = jParser.nextToken();
            if (nextToken == JsonToken.START_OBJECT) {
                this.getCurrentWeatherDataObjects(currentWeatherData, jParser, fieldname);
            }/*w w  w .j  av a  2 s  .c  o  m*/
            if (nextToken == JsonToken.START_ARRAY) {
                JsonToken tokenNext = jParser.nextToken();
                while (tokenNext != JsonToken.END_ARRAY) {
                    if (tokenNext == JsonToken.START_OBJECT) {
                        this.getCurrentWeatherDataObjects(currentWeatherData, jParser, fieldname);
                    }
                    tokenNext = jParser.nextToken();
                }
            }
            if ((nextToken == JsonToken.VALUE_NUMBER_INT) || (nextToken == JsonToken.VALUE_STRING)) {
                this.getCurrentWeatherDataObjects(currentWeatherData, jParser, fieldname);
            }
        }
    }
}

---

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.");
    }
}

---

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