Example usage for com.fasterxml.jackson.core JsonParser nextToken

List of usage examples for com.fasterxml.jackson.core JsonParser nextToken

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Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonParser nextToken.

Prototype

public abstract JsonToken nextToken() throws IOException, JsonParseException;

Source Link

Document

Main iteration method, which will advance stream enough to determine type of the next token, if any.

Usage

From source file:org.messic.server.api.tagwizard.discogs.DiscogsTAGWizardPlugin.java

@Override
public List<Album> getAlbumInfo(Album albumHelpInfo, File[] files) {
    if (albumHelpInfo == null || (albumHelpInfo.name == null && albumHelpInfo.author == null)
            || ((albumHelpInfo.name != null && albumHelpInfo.name.length() <= 0)
                    && (albumHelpInfo.author != null && albumHelpInfo.author.length() <= 0))) {
        return new ArrayList<Album>();
    }//from ww  w . jav  a 2  s.c om

    String baseURL = "http://api.discogs.com/database/search?type=release";

    try {
        if (albumHelpInfo.name != null) {
            baseURL = baseURL + "&release_title=" + URLEncoder.encode(albumHelpInfo.name, "UTF-8") + "";
        }
        if (albumHelpInfo.author != null) {
            baseURL = baseURL + "&artist=" + URLEncoder.encode(albumHelpInfo.author, "UTF-8") + "";
        }

        URL url = new URL(baseURL);
        Proxy proxy = getProxy();
        URLConnection uc = (proxy != null ? url.openConnection(proxy) : url.openConnection());
        uc.setRequestProperty("User-Agent", "Messic/1.0 +http://spheras.github.io/messic/");

        ArrayList<Album> result = new ArrayList<Album>();

        JsonFactory jsonFactory = new JsonFactory(); // or, for data binding,
        JsonParser jParser = jsonFactory.createParser(uc.getInputStream());
        while (jParser.nextToken() != null) {
            String fieldname = jParser.getCurrentName();
            if ("id".equals(fieldname)) {
                jParser.nextToken();
                String id = jParser.getText();
                // one second per petition allowed by discogs
                Thread.sleep(1000);

                Album album = getAlbum(id);

                result.add(album);
            }

        }
        return result;
    } catch (Exception e) {
        log.error("failed!", e);
    }

    return null;
}

From source file:net.nullschool.grains.jackson.datatype.AbstractBasicConstCollectionDeserializer.java

@Override
public T deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
    JsonToken token = jp.getCurrentToken();
    if (token != JsonToken.START_ARRAY) {
        throw ctxt.mappingException(collectionType.getRawClass());
    }//from   www  . ja v a 2s.co  m

    if ((token = jp.nextToken()) == JsonToken.END_ARRAY) {
        return emptyResult();
    }

    JsonDeserializer<?> ed = elementDeserializer;
    TypeDeserializer etd = elementTypeDeserializer;

    List<Object> elements = null;
    Object element;
    do {
        element = token != JsonToken.VALUE_NULL
                ? etd == null ? ed.deserialize(jp, ctxt) : ed.deserializeWithType(jp, ctxt, etd)
                : null;

        token = jp.nextToken();
        if (elements == null) {
            if (token == JsonToken.END_ARRAY) {
                return resultOf(element);
            }
            elements = new ArrayList<>();
        }
        elements.add(element);
    } while (token != JsonToken.END_ARRAY);

    return asResult(elements);
}

From source file:com.floragunn.searchguard.dlic.rest.validation.AbstractConfigurationValidator.java

private boolean checkDatatypes() throws Exception {
    String contentAsJson = XContentHelper.convertToJson(content, false);
    JsonParser parser = factory.createParser(contentAsJson);
    JsonToken token = null;/*  w  w  w.j a va2  s .c om*/
    while ((token = parser.nextToken()) != null) {
        if (token.equals(JsonToken.FIELD_NAME)) {
            String currentName = parser.getCurrentName();
            DataType dataType = allowedKeys.get(currentName);
            if (dataType != null) {
                JsonToken valueToken = parser.nextToken();
                switch (dataType) {
                case STRING:
                    if (!valueToken.equals(JsonToken.VALUE_STRING)) {
                        wrongDatatypes.put(currentName, "String expected");
                    }
                    break;
                case ARRAY:
                    if (!valueToken.equals(JsonToken.START_ARRAY) && !valueToken.equals(JsonToken.END_ARRAY)) {
                        wrongDatatypes.put(currentName, "Array expected");
                    }
                    break;
                case OBJECT:
                    if (!valueToken.equals(JsonToken.START_OBJECT)
                            && !valueToken.equals(JsonToken.END_OBJECT)) {
                        wrongDatatypes.put(currentName, "Object expected");
                    }
                    break;
                }
            }
        }
    }
    return wrongDatatypes.isEmpty();
}

From source file:org.emfjson.jackson.streaming.StreamReader.java

protected void readReference(JsonParser parser, EReference reference, EObject owner) throws IOException {

    JsonToken token = parser.nextToken();

    if (reference.isContainment()) {

        if (isMapEntry(reference.getEReferenceType())) {
            if (token == JsonToken.START_OBJECT) {
                token = parseEntry(parser, reference, owner);
            }/*from   w  w w . j  a  v a  2 s . c  o m*/
        }

        if (token == JsonToken.START_ARRAY) {
            while (parser.nextToken() != JsonToken.END_ARRAY) {
                parseObject(parser, reference, owner, null);
            }
        } else if (token == JsonToken.START_OBJECT) {
            parseObject(parser, reference, owner, null);
        }

    } else {

        if (token == JsonToken.START_ARRAY) {
            while (parser.nextToken() != JsonToken.END_ARRAY) {
                entries.add(createReferenceEntry(parser, reference, owner));
            }
        } else {
            entries.add(createReferenceEntry(parser, reference, owner));
        }
    }

}

From source file:org.springframework.security.oauth2.common.exceptions.OAuth2ExceptionJackson2Deserializer.java

@Override
public OAuth2Exception deserialize(JsonParser jp, DeserializationContext ctxt)
        throws IOException, JsonProcessingException {

    JsonToken t = jp.getCurrentToken();// w  ww.  jav a  2s  .c o m
    if (t == JsonToken.START_OBJECT) {
        t = jp.nextToken();
    }
    Map<String, Object> errorParams = new HashMap<String, Object>();
    for (; t == JsonToken.FIELD_NAME; t = jp.nextToken()) {
        // Must point to field name
        String fieldName = jp.getCurrentName();
        // And then the value...
        t = jp.nextToken();
        // Note: must handle null explicitly here; value deserializers won't
        Object value;
        if (t == JsonToken.VALUE_NULL) {
            value = null;
        }
        // Some servers might send back complex content
        else if (t == JsonToken.START_ARRAY) {
            value = jp.readValueAs(List.class);
        } else if (t == JsonToken.START_OBJECT) {
            value = jp.readValueAs(Map.class);
        } else {
            value = jp.getText();
        }
        errorParams.put(fieldName, value);
    }

    Object errorCode = errorParams.get("error");
    String errorMessage = errorParams.containsKey("error_description")
            ? errorParams.get("error_description").toString()
            : null;
    if (errorMessage == null) {
        errorMessage = errorCode == null ? "OAuth Error" : errorCode.toString();
    }

    OAuth2Exception ex;
    if ("invalid_client".equals(errorCode)) {
        ex = new InvalidClientException(errorMessage);
    } else if ("unauthorized_client".equals(errorCode)) {
        ex = new UnauthorizedUserException(errorMessage);
    } else if ("invalid_grant".equals(errorCode)) {
        if (errorMessage.toLowerCase().contains("redirect") && errorMessage.toLowerCase().contains("match")) {
            ex = new RedirectMismatchException(errorMessage);
        } else {
            ex = new InvalidGrantException(errorMessage);
        }
    } else if ("invalid_scope".equals(errorCode)) {
        ex = new InvalidScopeException(errorMessage);
    } else if ("invalid_token".equals(errorCode)) {
        ex = new InvalidTokenException(errorMessage);
    } else if ("invalid_request".equals(errorCode)) {
        ex = new InvalidRequestException(errorMessage);
    } else if ("redirect_uri_mismatch".equals(errorCode)) {
        ex = new RedirectMismatchException(errorMessage);
    } else if ("unsupported_grant_type".equals(errorCode)) {
        ex = new UnsupportedGrantTypeException(errorMessage);
    } else if ("unsupported_response_type".equals(errorCode)) {
        ex = new UnsupportedResponseTypeException(errorMessage);
    } else if ("insufficient_scope".equals(errorCode)) {
        ex = new InsufficientScopeException(errorMessage,
                OAuth2Utils.parseParameterList((String) errorParams.get("scope")));
    } else if ("access_denied".equals(errorCode)) {
        ex = new UserDeniedAuthorizationException(errorMessage);
    } else {
        ex = new OAuth2Exception(errorMessage);
    }

    Set<Map.Entry<String, Object>> entries = errorParams.entrySet();
    for (Map.Entry<String, Object> entry : entries) {
        String key = entry.getKey();
        if (!"error".equals(key) && !"error_description".equals(key)) {
            Object value = entry.getValue();
            ex.addAdditionalInformation(key, value == null ? null : value.toString());
        }
    }

    return ex;

}

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;
        }//w  w w  .ja  v  a2 s.com

        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:javaslang.jackson.datatype.deserialize.ArrayDeserializer.java

@Override
public T deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
    JsonDeserializer<?> deserializer = deserializer(0);
    List<Object> list = new ArrayList<>();
    if (!p.isExpectedStartArrayToken()) {
        throw ctxt.mappingException(valueType.getRawClass());
    }/*from  w  ww  . j av a  2 s .  co m*/
    for (JsonToken jsonToken = p.nextToken(); jsonToken != END_ARRAY; jsonToken = p.nextToken()) {
        Object value = (jsonToken != VALUE_NULL) ? deserializer.deserialize(p, ctxt)
                : deserializer.getNullValue(ctxt);
        list.add(value);
    }
    return create(list, ctxt);
}

From source file:org.apache.lucene.server.handlers.BulkUpdateDocumentHandler.java

@Override
public String handleStreamed(Reader reader, Map<String, List<String>> params) throws Exception {
    JsonFactory jfactory = new JsonFactory();

    JsonParser parser = jfactory.createJsonParser(reader);

    if (parser.nextToken() != JsonToken.START_OBJECT) {
        throw new IllegalArgumentException("expected JSON object");
    }// www.j a  v a2s  .  c o m
    if (parser.nextToken() != JsonToken.FIELD_NAME) {
        throw new IllegalArgumentException("expected indexName first");
    }
    if (!parser.getText().equals("indexName")) {
        throw new IllegalArgumentException("expected indexName first");
    }
    if (parser.nextToken() != JsonToken.VALUE_STRING) {
        throw new IllegalArgumentException("indexName should be string");
    }

    IndexState indexState = globalState.get(parser.getText());
    indexState.verifyStarted(null);

    ShardState shardState = indexState.getShard(0);

    if (parser.nextToken() != JsonToken.FIELD_NAME) {
        throw new IllegalArgumentException("expected documents next");
    }
    if (!parser.getText().equals("documents")) {
        throw new IllegalArgumentException("expected documents after indexName");
    }
    if (parser.nextToken() != JsonToken.START_ARRAY) {
        throw new IllegalArgumentException("documents should be a list");
    }

    IndexingContext ctx = new IndexingContext();

    AddDocumentHandler addDocHandler = (AddDocumentHandler) globalState.getHandler("addDocument");

    // Parse any number of documents to update:
    int count = 0;

    while (true) {
        JsonToken token = parser.nextToken();
        if (token == JsonToken.END_ARRAY) {
            break;
        }
        if (token != JsonToken.START_OBJECT) {
            throw new IllegalArgumentException("missing object");
        }

        // Parse term: and fields:
        Term updateTerm = null;

        final Document doc = new Document();

        while (true) {
            token = parser.nextToken();
            if (token == JsonToken.END_OBJECT) {
                break;
            }
            if (token != JsonToken.FIELD_NAME) {
                throw new IllegalArgumentException("missing field name");
            }
            String f = parser.getText();
            if (f.equals("term")) {
                if (parser.nextToken() != JsonToken.START_OBJECT) {
                    throw new IllegalArgumentException("missing object");
                }

                // TODO: allow field to be specified only once, then
                // only text per document

                String field = null, term = null;

                while (parser.nextToken() != JsonToken.END_OBJECT) {
                    String f2 = parser.getText();
                    if (f2.equals("field")) {
                        if (parser.nextToken() != JsonToken.VALUE_STRING) {
                            throw new IllegalArgumentException("missing string value");
                        }
                        field = parser.getText();
                        // Ensure field is valid:
                        indexState.getField(field);
                    } else if (f2.equals("term")) {
                        if (parser.nextToken() != JsonToken.VALUE_STRING) {
                            throw new IllegalArgumentException("missing string value");
                        }
                        term = parser.getText();
                    } else {
                        throw new IllegalArgumentException("unexpected field " + f);
                    }
                }
                updateTerm = new Term(field, term);
            } else if (f.equals("fields")) {
                addDocHandler.parseFields(indexState, doc, parser);
            } else {
                boolean handled = false;
                for (AddDocumentHandler.PostHandle postHandle : addDocHandler.postHandlers) {
                    if (postHandle.invoke(indexState, f, parser, doc)) {
                        handled = true;
                        break;
                    }
                }
                if (!handled) {
                    throw new IllegalArgumentException("unrecognized field " + parser.getText());
                }
            }
        }

        if (updateTerm == null) {
            throw new IllegalArgumentException("missing term");
        }

        // TODO: this is dup'd code ... share better w/ AddDocHandler
        globalState.submitIndexingTask(shardState.getAddDocumentJob(count, updateTerm, doc, ctx));
        count++;
    }

    // nocommit this is ... lameish:
    while (true) {
        if (ctx.addCount.get() == count) {
            break;
        }
        Thread.sleep(1);
    }

    JSONObject o = new JSONObject();
    o.put("indexGen", shardState.writer.getMaxCompletedSequenceNumber());
    o.put("indexedDocumentCount", count);
    return o.toString();
}

From source file:com.basistech.rosette.dm.jackson.ListAttributeDeserializer.java

@Override
@SuppressWarnings("unchecked")
public ListAttribute deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
    if (jp.getCurrentToken() == JsonToken.START_OBJECT) { // this is what we expect.
        // we advance to be in the same place the 'else' will be -- the first FIELD_NAME.
        jp.nextToken();
    } else {/*from  w  w  w  .  j  a v  a  2 s .c om*/
        /* In a full AnnotatedText, which is already doing some polymorphism shuffling, we end up here. */
        /* We find a FIELD_NAME for the first field of the object */
        if (jp.getCurrentToken() != JsonToken.FIELD_NAME) {
            throw ctxt.wrongTokenException(jp, JsonToken.START_OBJECT,
                    "ListAttributeDeserializer called not at or FIELD_NAME of first field");
        }
        /* We are at the field name, ready for the loop. */
    }
    TokenBuffer tb = null;
    for (JsonToken t = jp.getCurrentToken(); t == JsonToken.FIELD_NAME; t = jp.nextToken()) {
        String name = jp.getCurrentName();
        if ("itemType".equals(name)) { // gotcha!
            return deserialize(jp, ctxt, tb);
        }
        if (tb == null) {
            tb = new TokenBuffer(null, false);
        }
        tb.copyCurrentStructure(jp);
    }
    throw ctxt.mappingException("No itemType provided in a list");
}