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.elasticsearch.client.sniff.ElasticsearchNodesSniffer.java

static List<Node> readHosts(HttpEntity entity, Scheme scheme, JsonFactory jsonFactory) throws IOException {
    try (InputStream inputStream = entity.getContent()) {
        JsonParser parser = jsonFactory.createParser(inputStream);
        if (parser.nextToken() != JsonToken.START_OBJECT) {
            throw new IOException("expected data to start with an object");
        }// w  w  w  .  jav a2s.c  o m
        List<Node> nodes = new ArrayList<>();
        while (parser.nextToken() != JsonToken.END_OBJECT) {
            if (parser.getCurrentToken() == JsonToken.START_OBJECT) {
                if ("nodes".equals(parser.getCurrentName())) {
                    while (parser.nextToken() != JsonToken.END_OBJECT) {
                        JsonToken token = parser.nextToken();
                        assert token == JsonToken.START_OBJECT;
                        String nodeId = parser.getCurrentName();
                        Node node = readNode(nodeId, parser, scheme);
                        if (node != null) {
                            nodes.add(node);
                        }
                    }
                } else {
                    parser.skipChildren();
                }
            }
        }
        return nodes;
    }
}

From source file:org.n52.movingcode.runtime.processors.config.ProcessorConfig.java

/**
 * Parsing routine for processor objects
 * //from ww  w .jav a2  s. c  o m
 * @param jp
 * @return
 * @throws JsonParseException
 * @throws IOException
 */
private static final ProcessorDescription parseProcessorJSON(JsonParser jp)
        throws JsonParseException, IOException {
    ProcessorDescription p = new ProcessorDescription();
    while (jp.nextToken() != END_OBJECT) {
        JsonToken jt = jp.getCurrentToken();

        // look for ID and parse it
        if (jp.getCurrentName().equalsIgnoreCase(KEY_ID) && jt == VALUE_STRING) {
            p.setId(jp.getValueAsString());
        }

        // look for temp workspace and parse it
        if (jp.getCurrentName().equalsIgnoreCase(KEY_TEMPWORKSPACE) && jt == VALUE_STRING) {
            p.setTempWorkspace(jp.getValueAsString());
        }

        // look for containers and parse them (Value Case)
        if (jp.getCurrentName().equalsIgnoreCase(KEY_SUPPORTED_CONTAINER) && jt == VALUE_STRING) {
            p.addContainer(jp.getValueAsString());
        }

        // look for containers and parse them (Array Case)
        if (jp.getCurrentName().equalsIgnoreCase(KEY_SUPPORTED_CONTAINER) && jt == START_ARRAY) {
            while (jp.nextToken() != END_ARRAY) {
                if (jp.getCurrentToken() == VALUE_STRING) {
                    p.addPlatform(jp.getValueAsString());
                }
            }
        }

        // look for platforms and parse them (Array Case)
        if (jp.getCurrentName().equalsIgnoreCase(KEY_AVAILABLE_PLATFORMS) && jt == JsonToken.START_ARRAY) {
            while (jp.nextToken() != END_ARRAY) {
                if (jp.getCurrentToken() == VALUE_STRING) {
                    p.addPlatform(jp.getValueAsString());
                }
            }
        }

        // look for platforms and parse them (Value Case)
        if (jp.getCurrentName().equalsIgnoreCase(KEY_AVAILABLE_PLATFORMS) && jt == JsonToken.VALUE_STRING) {
            p.addPlatform(jp.getValueAsString());
        }

        // look for properties and parse them
        if (jp.getCurrentName().equalsIgnoreCase(KEY_PROPERTIES) && jt == JsonToken.START_ARRAY) {
            HashMap<String, String> props = new HashMap<String, String>();
            while (jp.nextToken() != END_ARRAY) {
                if (jp.getCurrentToken() == FIELD_NAME) {
                    props.put(jp.getCurrentName(), jp.nextTextValue());
                }

            }

            p.setProperties(props);

        }
    }

    return p;
}

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

static Variation parseVariation(final JsonFactory jsonFactory, final InputStream inputStream)
        throws IOException {
    JsonParser parser = null;
    try {/* w  ww  .  j  a va  2 s . com*/
        parser = jsonFactory.createParser(inputStream);
        parser.nextToken();

        String identifier = null;
        String referenceAllele = null;
        List<String> alternateAlleles = new ArrayList<String>();

        String locationName = null;
        String coordinateSystem = "chromosome";
        int start = -1;
        int end = -1;
        int strand = -1;

        while (parser.nextToken() != JsonToken.END_OBJECT) {
            String field = parser.getCurrentName();
            parser.nextToken();
            if ("name".equals(field)) {
                identifier = parser.getText();
            } else if ("mappings".equals(field)) {
                // todo:  will only catch last mapping
                while (parser.nextToken() != JsonToken.END_ARRAY) {
                    while (parser.nextToken() != JsonToken.END_OBJECT) {
                        String mappingsField = parser.getCurrentName();
                        parser.nextToken();

                        if ("seq_region_name".equals(mappingsField)) {
                            locationName = parser.getText();
                        } else if ("start".equals(mappingsField)) {
                            start = Integer.parseInt(parser.getText());
                        } else if ("end".equals(mappingsField)) {
                            end = Integer.parseInt(parser.getText());
                        } else if ("strand".equals(mappingsField)) {
                            strand = Integer.parseInt(parser.getText());
                        } else if ("allele_string".equals(mappingsField)) {
                            String[] tokens = parser.getText().split("/");
                            // todo:  check ref here against ancestral_allele
                            referenceAllele = tokens[0];
                            for (int i = 1; i < tokens.length; i++) {
                                alternateAlleles.add(tokens[i]);
                            }
                        }
                    }
                }
            } else if ("synonyms".equals(field)) {
                while (parser.nextToken() != JsonToken.END_ARRAY) {
                    // ignore
                }
            } else if ("evidence".equals(field)) {
                while (parser.nextToken() != JsonToken.END_ARRAY) {
                    // ignore
                }
            }
        }
        return new Variation(identifier, referenceAllele, alternateAlleles,
                new Location(locationName, coordinateSystem, start, end, strand));
    } finally {
        try {
            inputStream.close();
        } catch (Exception e) {
            // ignored
        }
        try {
            parser.close();
        } catch (Exception e) {
            // ignored
        }
    }
}

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

/**
 * Gets the Extended Error information./*from w w w. j  a v  a2  s. co  m*/
 * 
 * @return the Extended Error information.
 * 
 * @param reader
 *            the input stream to read error details from.
 * @param format
 *            The {@link TablePayloadFormat} 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.
 */
public static StorageExtendedErrorInformation getExtendedErrorInformation(final Reader reader,
        final TablePayloadFormat format) throws JsonParseException, IOException {
    JsonFactory jsonFactory = new JsonFactory();
    JsonParser parser = jsonFactory.createParser(reader);
    try {
        final StorageExtendedErrorInformation errorInfo = new StorageExtendedErrorInformation();

        if (!parser.hasCurrentToken()) {
            parser.nextToken();
        }

        JsonUtilities.assertIsStartObjectJsonToken(parser);

        parser.nextToken();
        JsonUtilities.assertIsFieldNameJsonToken(parser);
        JsonUtilities.assertIsExpectedFieldName(parser, "odata.error");

        // start getting extended error information
        parser.nextToken();
        JsonUtilities.assertIsStartObjectJsonToken(parser);

        // get code
        parser.nextValue();
        JsonUtilities.assertIsExpectedFieldName(parser, TableConstants.ErrorConstants.ERROR_CODE);
        errorInfo.setErrorCode(parser.getValueAsString());

        // get message
        parser.nextToken();
        JsonUtilities.assertIsFieldNameJsonToken(parser);
        JsonUtilities.assertIsExpectedFieldName(parser, TableConstants.ErrorConstants.ERROR_MESSAGE);

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

        parser.nextValue();
        JsonUtilities.assertIsExpectedFieldName(parser, "lang");

        parser.nextValue();
        JsonUtilities.assertIsExpectedFieldName(parser, "value");
        errorInfo.setErrorMessage(parser.getValueAsString());

        parser.nextToken();
        JsonUtilities.assertIsEndObjectJsonToken(parser);

        parser.nextToken();

        // get innererror if it exists
        if (parser.getCurrentToken() == JsonToken.FIELD_NAME) {
            JsonUtilities.assertIsExpectedFieldName(parser, TableConstants.ErrorConstants.INNER_ERROR);
            errorInfo.getAdditionalDetails().putAll(parseJsonErrorException(parser));
            parser.nextToken();
        }

        // end code object
        JsonUtilities.assertIsEndObjectJsonToken(parser);

        // end odata.error object
        parser.nextToken();
        JsonUtilities.assertIsEndObjectJsonToken(parser);

        return errorInfo;
    } finally {
        parser.close();
    }
}

From source file:com.palominolabs.crm.sf.rest.HttpApiClientTest.java

private static String reformatJson(@Nullable String input) throws IOException {
    checkNotNull(input);//from ww  w  .j a  v  a 2  s  .  c om

    JsonFactory jsonFactory = new JsonFactory();

    JsonParser parser = jsonFactory.createParser(input);
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createGenerator(writer);
    generator.useDefaultPrettyPrinter();

    while (parser.nextToken() != null) {
        generator.copyCurrentEvent(parser);
    }

    generator.close();

    return writer.toString();
}

From source file:com.teamlazerbeez.crm.sf.rest.HttpApiClientTest.java

private static String reformatJson(String input) throws IOException {
    JsonFactory jsonFactory = new JsonFactory();

    JsonParser parser = jsonFactory.createJsonParser(input);
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createJsonGenerator(writer);
    generator.useDefaultPrettyPrinter();

    while (parser.nextToken() != null) {
        generator.copyCurrentEvent(parser);
    }//from  ww  w. ja v a 2s  .  c o m

    generator.close();

    return writer.toString();
}

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

/**
 * Reads a field value as the provided type. This method supports parametrised types.
 *
 * @param parser the parser//from ww w.jav  a  2 s .  c om
 * @param expected_type the expected type of the value
 * @return the value
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static Object readValueAs(final JsonParser parser, final Type expected_type) throws IOException {

    final Object value;
    if (expected_type.equals(Void.TYPE)) {
        expectNullValue(parser);
        value = null;
    } else {
        parser.nextToken();
        value = parser.readValueAs(toTypeReference(expected_type));
    }
    return value;
}

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

/**
 * Reads from either a JSON Value String (containing CSV) or a JSON Array.
 * The dual input format is needed because some fields (e.g. keywords) were allowed
 * to be of either type in OpenRTB 2.2; now in 2.3 they are all CSV strings only.
 * TODO: Simplify this to only accept CSV strings after 2.2 compatibility is dropped.
 *//*  w  w  w.ja v a 2s .com*/
public static String readCsvString(JsonParser par) throws IOException {
    JsonToken currentToken = par.getCurrentToken();
    if (currentToken == JsonToken.START_ARRAY) {
        StringBuilder keywords = new StringBuilder();
        for (startArray(par); endArray(par); par.nextToken()) {
            if (keywords.length() != 0) {
                keywords.append(',');
            }
            keywords.append(par.getText());
        }
        return keywords.toString();
    } else if (currentToken == JsonToken.VALUE_STRING) {
        return par.getText();
    } else {
        throw new JsonParseException(par, "Expected string or array");
    }
}

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

/**
 * Reads a field value as the provided type.
 *
 * @param <Value> the value type//from w w  w  . ja  v a  2 s . co  m
 * @param parser the parser
 * @param expected_type the expected type of the value
 * @return the value
 * @throws IOException Signals that an I/O exception has occurred.
 */
public static <Value> Value readValueAs(final JsonParser parser, final Class<Value> expected_type)
        throws IOException {

    final Value value;
    if (expected_type.equals(Void.TYPE)) {
        expectNullValue(parser);
        value = null;
    } else {
        parser.nextToken();
        value = parser.readValueAs(expected_type);
    }
    return value;
}

From source file:org.oscim.utils.overpass.OverpassAPIReader.java

private static TagSet parseTags(JsonParser jp) throws JsonParseException, IOException {

    TagSet tags = null;//from   w  ww.j ava 2s .  com

    while (jp.nextToken() != JsonToken.END_OBJECT) {
        String key = jp.getCurrentName();
        jp.nextToken();
        String val = jp.getText();
        if (tags == null)
            tags = new TagSet(4);

        tags.add(new Tag(key, val, false));

    }

    return tags;
}