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

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.jmingo.util.QueryUtils.java

/**
 * Checks what string has valid json format.
 *
 * @param json the json to validate//from ww w. java  2  s.co m
 * @return true if string is correct json otherwise - false
 */
public static boolean isValidJSON(final String json) {
    boolean valid = false;
    try {
        final JsonParser parser = new MongoMapper().getFactory().createParser(json);
        while (parser.nextToken() != null) {
        }
        valid = true;
    } catch (IOException e) {
        e.printStackTrace();
    }

    return valid;
}

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From source file:io.seldon.spark.actions.JobUtils.java

public static ActionData getActionDataFromActionLogLine(String actionLogLine) {
    ActionData actionData = new ActionData();

    String[] parts = actionLogLine.split("\\s+", 3);
    String json = parts[2];//w w  w .jav a  2 s .  c  o  m
    actionData.timestamp_utc = parts[0];

    JsonFactory jsonF = new JsonFactory();
    try {
        JsonParser jp = jsonF.createParser(json);
        if (jp.nextToken() != JsonToken.START_OBJECT) {
            throw new IOException("Expected data to start with an Object");
        }
        while (jp.nextToken() != JsonToken.END_OBJECT) {
            String fieldName = jp.getCurrentName();
            // Let's move to value
            jp.nextToken();
            if (fieldName.equals("client")) {
                actionData.client = jp.getText();
            } else if (fieldName.equals("client_userid")) {
                actionData.client_userid = jp.getText();
            } else if (fieldName.equals("userid")) {
                actionData.userid = jp.getValueAsInt();
            } else if (fieldName.equals("itemid")) {
                actionData.itemid = jp.getValueAsInt();
            } else if (fieldName.equals("client_itemid")) {
                actionData.client_itemid = jp.getText();
            } else if (fieldName.equals("rectag")) {
                actionData.rectag = jp.getText();
            } else if (fieldName.equals("type")) {
                actionData.type = jp.getValueAsInt();
            } else if (fieldName.equals("value")) {
                actionData.value = jp.getValueAsDouble();
            }
        }
        jp.close();
    } catch (JsonParseException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return actionData;
}

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

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

    parser.nextToken();

    EncryptionAgent agent = new EncryptionAgent();
    while (parser.getCurrentToken() != JsonToken.END_OBJECT) {
        String name = parser.getCurrentName();
        parser.nextToken();/*from w w  w .  j a  v  a2  s  . com*/

        if (name.equals("Protocol")) {
            agent.setProtocol(parser.getValueAsString());
        } else if (name.equals("EncryptionAlgorithm")) {
            agent.setEncryptionAlgorithm(EncryptionAlgorithm.valueOf(parser.getValueAsString()));
        }
        parser.nextToken();
    }

    JsonUtilities.assertIsEndObjectJsonToken(parser);

    return agent;
}

---

From source file:org.nuxeo.client.test.marshallers.DocumentMarshaller.java

protected static List<Object> readArrayProperty(JsonParser jp) throws IOException {
    List<Object> list = new ArrayList<>();
    JsonToken tok = jp.nextToken();
    while (tok != JsonToken.END_ARRAY) {
        switch (tok) {
        case START_ARRAY:
            list.add(readArrayProperty(jp));
            break;
        case START_OBJECT:
            list.add(readObjectProperty(jp));
            break;
        default:/*from  w ww  .j  ava 2  s.  c o  m*/
            list.add(jp.getText());
        }
        tok = jp.nextToken();
    }
    return list;
}

---

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

static Lookup parseLookup(final JsonFactory jsonFactory, final InputStream inputStream) throws IOException {
    JsonParser parser = null;
    try {/*from   w w w.j  ava 2 s  .  co  m*/
        parser = jsonFactory.createParser(inputStream);
        parser.nextToken();

        String id = null;
        String species = null;
        String type = null;
        String database = null;

        String locationName = null;
        String coordinateSystem = "chromosome"; // reasonable default?
        int start = -1;
        int end = -1;
        int strand = -1;

        while (parser.nextToken() != JsonToken.END_OBJECT) {
            String field = parser.getCurrentName();
            parser.nextToken();
            if ("id".equals(field)) {
                id = parser.getText();
            } else if ("species".equals(field)) {
                species = parser.getText();
            } else if ("object_type".equals(field)) {
                type = parser.getText();
            } else if ("db_type".equals(field)) {
                database = 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());
            }
        }
        return new Lookup(id, species, type, database,
                new Location(locationName, coordinateSystem, start, end, strand));
    } finally {
        try {
            inputStream.close();
        } catch (Exception e) {
            // ignored
        }
        try {
            parser.close();
        } catch (Exception e) {
            // ignored
        }
    }
}

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

private static Map<String, String> parseMap(JsonParser parser) throws JsonParseException, IOException {
    Map<String, String> map = new HashMap<>();
    JsonToken token = parser.nextToken();
    if (!JsonToken.START_OBJECT.equals(token))
        return map;

    while (!parser.isClosed() && (token = parser.nextToken()) != null && token != JsonToken.END_OBJECT) {
        String name = parser.getCurrentName();
        token = parser.nextToken();//from   w  w  w  .j  a v  a 2  s .c  om
        String value = parser.getText();
        map.put(name.toLowerCase(), value);
    }
    return map;
}

---

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

static ArchivedSequence parseArchivedSequence(final JsonFactory jsonFactory, final InputStream inputStream)
        throws IOException {
    JsonParser parser = null;
    try {//from  ww  w. j a  va2 s. c om
        parser = jsonFactory.createParser(inputStream);
        parser.nextToken();

        String id = null;
        String type = null;
        String assembly = null;
        String release = null;
        String version = null;
        String latest = null;
        String peptide = null;
        boolean current = false;
        List<String> possibleReplacement = new ArrayList<String>();

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

            if ("id".equals(field)) {
                id = parser.getText();
            } else if ("type".equals(field)) {
                type = parser.getText();
            } else if ("assembly".equals(field)) {
                assembly = parser.getText();
            } else if ("release".equals(field)) {
                release = parser.getText();
            } else if ("version".equals(field)) {
                version = parser.getText();
            } else if ("latest".equals(field)) {
                latest = parser.getText();
            } else if ("peptide".equals(field)) {
                peptide = parser.getText();
            } else if ("is_current".equals(field)) {
                current = (Integer.parseInt(parser.getText()) > 0);
            } else if ("possible_replacement".equals(field)) {
                while (parser.nextToken() != JsonToken.END_ARRAY) {
                    possibleReplacement.add(parser.getText());
                }
            }
        }
        return new ArchivedSequence(id, type, assembly, release, version, latest, peptide, current,
                possibleReplacement.toArray(new String[possibleReplacement.size()]));
    } finally {
        try {
            inputStream.close();
        } catch (Exception e) {
            // ignored
        }
        try {
            parser.close();
        } catch (Exception e) {
            // ignored
        }
    }
}

---

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

/**
 * Expects start array.//from w w  w.  j av a  2s .  com
 *
 * @param parser the parser
 * @throws IOException Signals that an I/O exception has occurred.
 */
private static void expectStartArray(final JsonParser parser) throws IOException {

    if (parser.nextToken() != JsonToken.START_ARRAY) {
        throw new JsonParseException("expected start array", parser.getCurrentLocation());
    }
}

---

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#START_ARRAY}.
 * Throws {@link JsonParseException} if the token is not a {@link JsonToken#START_ARRAY}.
 *
 * @param parser the parser to read from
 * @throws IOException Signals that an I/O exception has occurred.
 *///from   www . j  a va2  s. c om
private static void expectEndArray(final JsonParser parser) throws IOException {

    if (parser.nextToken() != JsonToken.END_ARRAY) {
        throw new JsonParseException("expected end array", parser.getCurrentLocation());
    }
}

---

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#VALUE_NULL}.
 * Throws {@link JsonParseException} if the token is not a {@link JsonToken#VALUE_NULL}.
 *
 * @param parser the parser to read from
 * @throws IOException Signals that an I/O exception has occurred.
 *///from w ww  . j  a v a 2s .co m
private static void expectNullValue(final JsonParser parser) throws IOException {

    if (parser.nextToken() != JsonToken.VALUE_NULL) {
        throw new JsonParseException("expected null value", parser.getCurrentLocation());
    }
}

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