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.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/* w  w  w  .j  a  va 2 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:com.microsoft.azure.storage.core.WrappedContentKey.java

public static WrappedContentKey deserialize(JsonParser parser) throws JsonParseException, IOException {
    JsonUtilities.assertIsStartObjectJsonToken(parser);

    parser.nextToken();

    WrappedContentKey wrappedContentKey = new WrappedContentKey();
    while (parser.getCurrentToken() != JsonToken.END_OBJECT) {
        String name = parser.getCurrentName();
        parser.nextToken();//w w w.  j  a  v a2s.c  om

        if (name.equals("KeyId")) {
            wrappedContentKey.setKeyId(parser.getValueAsString());
        } else if (name.equals("EncryptedKey")) {
            wrappedContentKey.setEncryptedKey(parser.getBinaryValue());
        } else if (name.equals("Algorithm")) {
            wrappedContentKey.setAlgorithm(parser.getValueAsString());
        }
        parser.nextToken();
    }

    JsonUtilities.assertIsEndObjectJsonToken(parser);

    return wrappedContentKey;
}

From source file:org.talend.components.jira.datum.EntityParser.java

/**
 * Rewinds {@link JsonParser} to the value of specified field
 * //from   ww  w.j a  v a  2  s. c om
 * @param parser JSON parser
 * @param fieldName name of field rewind to
 * @return true if field was found, false otherwise
 * @throws IOException in case of exception during JSON parsing
 */
private static boolean rewindToField(JsonParser parser, final String fieldName) throws IOException {

    JsonToken currentToken = parser.nextToken();
    /*
     * There is no special token, which denotes end of file, in Jackson.
     * This counter is used to define the end of file.
     * The counter counts '{' and '}'. It is increased, when meets '{' and
     * decreased, when meets '}'. When braceCounter == 0 it means the end
     * of file was met
     */
    int braceCounter = 0;
    String currentField = null;
    do {
        if (JsonToken.START_OBJECT == currentToken) {
            braceCounter++;
        }
        if (JsonToken.END_OBJECT == currentToken) {
            braceCounter--;
        }
        if (JsonToken.FIELD_NAME == currentToken) {
            currentField = parser.getCurrentName();
        }
        currentToken = parser.nextToken();
    } while (!fieldName.equals(currentField) && braceCounter != END_JSON);

    return braceCounter != END_JSON;
}

From source file:com.github.heuermh.ensemblrestclient.JacksonOverlapConverter.java

static List<Variation> parseOverlap(final JsonFactory jsonFactory, final InputStream inputStream)
        throws IOException {
    JsonParser parser = null;
    try {//from   www.  jav  a2s  .c o m
        parser = jsonFactory.createParser(inputStream);
        parser.nextToken();

        String id = null;
        String reference = null;
        List<String> alternateAlleles = new ArrayList<String>();
        String locationName = null;
        String coordinateSystem = "chromosome";
        int start = -1;
        int end = -1;
        int strand = -1;
        List<Variation> variationFeatures = new ArrayList<Variation>();
        while (parser.nextToken() != JsonToken.END_ARRAY) {
            while (parser.nextToken() != JsonToken.END_OBJECT) {
                String field = parser.getCurrentName();
                parser.nextToken();
                if ("id".equals(field)) {
                    id = parser.getText();
                } else if ("seq_region_name".equals(field)) {
                    locationName = parser.getText();
                } else if ("start".equals(field)) {
                    start = Integer.parseInt(parser.getText());
                } else if ("end".equals(field)) {
                    end = Integer.parseInt(parser.getText());
                } else if ("strand".equals(field)) {
                    strand = Integer.parseInt(parser.getText());
                } else if ("alt_alleles".equals(field)) {
                    int index = 0;
                    while (parser.nextToken() != JsonToken.END_ARRAY) {
                        if (index == 0) {
                            reference = parser.getText();
                        } else if (index == 1) {
                            alternateAlleles.add(parser.getText());
                        }
                        index++;
                    }
                }
            }
            variationFeatures.add(new Variation(id, reference, alternateAlleles,
                    new Location(locationName, coordinateSystem, start, end, strand)));
            id = null;
            reference = null;
            alternateAlleles.clear();
            locationName = null;
            start = -1;
            end = -1;
            strand = -1;
        }
        return variationFeatures;
    } finally {
        try {
            inputStream.close();
        } catch (Exception e) {
            // ignored
        }
        try {
            parser.close();
        } catch (Exception e) {
            // ignored
        }
    }
}

From source file:com.boundary.zoocreeper.Restore.java

private static void expectNextToken(JsonParser jp, JsonToken expected) throws IOException {
    if (jp.nextToken() != expected) {
        throw new IOException(String.format("Expected: %s, Found: %s", expected, jp.getCurrentToken()));
    }//from  w  w  w .jav  a 2 s .c o m
}

From source file:org.elasticsearch.client.sniff.ElasticsearchHostsSniffer.java

private static HttpHost readHost(String nodeId, JsonParser parser, Scheme scheme) throws IOException {
    HttpHost httpHost = null;//from  ww w.j  a  v a 2s .  c o m
    String fieldName = null;
    while (parser.nextToken() != JsonToken.END_OBJECT) {
        if (parser.getCurrentToken() == JsonToken.FIELD_NAME) {
            fieldName = parser.getCurrentName();
        } else if (parser.getCurrentToken() == JsonToken.START_OBJECT) {
            if ("http".equals(fieldName)) {
                while (parser.nextToken() != JsonToken.END_OBJECT) {
                    if (parser.getCurrentToken() == JsonToken.VALUE_STRING
                            && "publish_address".equals(parser.getCurrentName())) {
                        URI boundAddressAsURI = URI.create(scheme + "://" + parser.getValueAsString());
                        httpHost = new HttpHost(boundAddressAsURI.getHost(), boundAddressAsURI.getPort(),
                                boundAddressAsURI.getScheme());
                    } else if (parser.getCurrentToken() == JsonToken.START_OBJECT) {
                        parser.skipChildren();
                    }
                }
            } else {
                parser.skipChildren();
            }
        }
    }
    //http section is not present if http is not enabled on the node, ignore such nodes
    if (httpHost == null) {
        logger.debug("skipping node [" + nodeId + "] with http disabled");
        return null;
    }
    return httpHost;
}

From source file:com.microsoft.azure.storage.blob.BlobEncryptionData.java

public static BlobEncryptionData deserialize(String inputData) throws JsonProcessingException, IOException {
    JsonParser parser = Utility.getJsonParser(inputData);
    BlobEncryptionData data = new BlobEncryptionData();
    try {// w  w w  .j  a  v a 2s. co  m
        if (!parser.hasCurrentToken()) {
            parser.nextToken();
        }

        JsonUtilities.assertIsStartObjectJsonToken(parser);

        parser.nextToken();

        while (parser.getCurrentToken() != JsonToken.END_OBJECT) {
            String name = parser.getCurrentName();
            parser.nextToken();

            if (name.equals(Constants.EncryptionConstants.ENCRYPTION_MODE)) {
                data.setEncryptionMode(parser.getValueAsString());
            } else if (name.equals(Constants.EncryptionConstants.WRAPPED_CONTENT_KEY)) {
                data.setWrappedContentKey(WrappedContentKey.deserialize(parser));
            } else if (name.equals(Constants.EncryptionConstants.ENCRYPTION_AGENT)) {
                data.setEncryptionAgent(EncryptionAgent.deserialize(parser));
            } else if (name.equals(Constants.EncryptionConstants.CONTENT_ENCRYPTION_IV)) {
                data.setContentEncryptionIV(parser.getBinaryValue());
            } else if (name.equals(Constants.EncryptionConstants.KEY_WRAPPING_METADATA)) {
                data.setKeyWrappingMetadata(deserializeKeyWrappingMetadata(parser));
            } else {
                consumeJsonObject(parser);
            }
            parser.nextToken();
        }

        JsonUtilities.assertIsEndObjectJsonToken(parser);
    } finally {
        parser.close();
    }

    return data;
}

From source file:com.microsoft.azure.storage.core.EncryptionData.java

public static void consumeJsonObject(JsonParser parser) throws IOException {
    JsonUtilities.assertIsStartObjectJsonToken(parser);
    parser.nextToken();
    if (parser.getCurrentToken() != JsonToken.END_OBJECT) {
        consumeJsonObject(parser);// w  w w .ja va  2  s . c  o  m
    }
}

From source file:com.microsoft.azure.storage.table.TableStorageErrorDeserializer.java

/**
 * Parses the error exception details from the Json-formatted response.
 * /*from w w  w.j a  v  a2  s .co m*/
 * @param parser
 *            the {@link JsonParser} to use for parsing
 * @throws IOException
 *             if an error occurs while accessing the stream with Json.
 * @throws JsonParseException
 *             if an error occurs while parsing the stream.
 */
private static HashMap<String, String[]> parseJsonErrorException(JsonParser parser)
        throws JsonParseException, IOException {
    HashMap<String, String[]> additionalDetails = new HashMap<String, String[]>();

    parser.nextToken();
    JsonUtilities.assertIsStartObjectJsonToken(parser);

    parser.nextToken();
    JsonUtilities.assertIsFieldNameJsonToken(parser);

    while (parser.getCurrentToken() != JsonToken.END_OBJECT) {
        if (parser.getCurrentName().equals(TableConstants.ErrorConstants.ERROR_MESSAGE)) {
            parser.nextToken();
            additionalDetails.put(TableConstants.ErrorConstants.ERROR_MESSAGE,
                    new String[] { parser.getValueAsString() });
        } else if (parser.getCurrentName().equals(TableConstants.ErrorConstants.ERROR_EXCEPTION_TYPE)) {
            parser.nextToken();
            additionalDetails.put(TableConstants.ErrorConstants.ERROR_EXCEPTION_TYPE,
                    new String[] { parser.getValueAsString() });
        } else if (parser.getCurrentName().equals(TableConstants.ErrorConstants.ERROR_EXCEPTION_STACK_TRACE)) {
            parser.nextToken();
            additionalDetails.put(Constants.ERROR_EXCEPTION_STACK_TRACE,
                    new String[] { parser.getValueAsString() });
        }
        parser.nextToken();
    }

    return additionalDetails;
}

From source file:com.boundary.zoocreeper.Restore.java

private static void readACLs(JsonParser jp, List<ACL> acls) throws IOException {
    expectCurrentToken(jp, JsonToken.START_ARRAY);
    while (jp.nextToken() != JsonToken.END_ARRAY) {
        acls.add(readACL(jp));/*from   w  ww.j ava  2 s  .com*/
    }
}