Example usage for com.google.gson JsonElement toString

List of usage examples for com.google.gson JsonElement toString

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Introduction

In this page you can find the example usage for com.google.gson JsonElement toString.

Prototype

@Override
public String toString()

Source Link

Document

Returns a String representation of this element.

Usage

From source file:edu.isi.karma.service.json.JsonManager.java

License:Apache License

private static void recursiveParse(JsonElement jse, Element element) {
    if (jse.isJsonObject()) {
        JsonObject j = jse.getAsJsonObject();
        Set<Entry<String, JsonElement>> set = j.entrySet();
        //           System.out.println(set.size());
        Iterator<Entry<String, JsonElement>> iter = set.iterator();
        while (iter.hasNext()) {
            Entry<String, JsonElement> entry = iter.next();

            Element e = new Element();
            e.setKey(entry.getKey());//from w ww.jav  a  2 s.com
            //               System.out.println("create " + e.getKey());
            e.setValue(new ArrayValue());
            e.setValueType(ValueType.ARRAY);

            recursiveParse(entry.getValue(), e);

            //               System.out.println("element " + element.getKey());
            e.setParent(element);
            ((ArrayValue) element.getValue()).getElements().add(e);
            //               System.out.println("e " + e.getKey());

        }
    } else if (jse.isJsonArray()) {
        JsonArray j = jse.getAsJsonArray();
        Iterator<JsonElement> iter = j.iterator();
        while (iter.hasNext()) {

            Element e = new Element();
            e.setKey("");
            e.setValue(new ArrayValue());
            e.setValueType(ValueType.ARRAY);
            recursiveParse(iter.next(), e);
            e.setParent(element);
            ((ArrayValue) element.getValue()).getElements().add(e);
        }
    } else if (jse.isJsonPrimitive()) {
        element.setValueType(ValueType.SINGLE);
        element.setValue(new SingleValue(jse.toString()));
        //           System.out.println(jse.getAsString());
    }

}

From source file:edu.ufl.bmi.ontology.DtmJsonProcessor.java

License:Open Source License

private static JsonArray sortForEasyValidation(JsonArray jsonArray) {
    JsonArray sortedJsonArray = new JsonArray();
    List<JsonElement> jsonList = new ArrayList<JsonElement>();
    for (int i = 0; i < jsonArray.size(); i++) {
        jsonList.add(jsonArray.get(i));//w w w. j  a  v  a2  s .  c  o  m
    }

    Collections.sort(jsonList, new Comparator<JsonElement>() {
        /*
           We'll sort digital objects by title.  However, the data formats do not have
         a title attribute, so if the title does not exist (i.e., either aTitle
         or bTitle JsonElement is null), then we'll get the name attribute and 
         use it instead.
        */
        public int compare(JsonElement a, JsonElement b) {
            if (a == null || b == null) {
                System.err.println(a + "\n\n" + b);
            }

            JsonElement aTitle = a.getAsJsonObject().get("content").getAsJsonObject().get("title");
            if (aTitle == null)
                aTitle = a.getAsJsonObject().get("content").getAsJsonObject().get("name");

            JsonElement bTitle = b.getAsJsonObject().get("content").getAsJsonObject().get("title");
            if (bTitle == null)
                bTitle = b.getAsJsonObject().get("content").getAsJsonObject().get("name");

            if (aTitle == null || bTitle == null) {
                System.err.println(aTitle + "\t" + bTitle);
                System.err.println(a + "\n\n" + b);
            }
            return aTitle.toString().compareTo(bTitle.toString());
        }
    });

    for (int i = 0; i < jsonArray.size(); i++) {
        sortedJsonArray.add(jsonList.get(i));
    }
    return sortedJsonArray;
}

From source file:elsu.database.rowset.EntityDescriptor.java

public EntityDescriptor(String jsonColumns, String jsonRows) throws Exception {
    Type columnType = new TypeToken<Map<String, ColumnDescriptor>>() {
    }.getType();/*  w  ww .ja  v a 2  s.c  o m*/
    this._columns = (Map<String, ColumnDescriptor>) JsonXMLUtils.JSon2Object(jsonColumns, columnType);
    this._columnsById = setColumnsById(this._columns);

    this._rows = new ArrayList<RowDescriptor>();

    RowDescriptor rd = null;
    JsonParser parser = new JsonParser();

    JsonArray jArray = parser.parse(jsonRows).getAsJsonArray();
    for (JsonElement jElement : jArray) {
        rd = new RowDescriptor(this._columns, this._columnsById, jElement.toString());
        this._rows.add(rd);
    }
}

From source file:esiptestbed.mudrod.metadata.pre.ApiHarvester.java

License:Apache License

private void importSingleFileToES(InputStream is) {
    try {/*from   w  ww .ja v a 2s  . co  m*/
        String jsonTxt = IOUtils.toString(is);
        JsonParser parser = new JsonParser();
        JsonElement item = parser.parse(jsonTxt);
        IndexRequest ir = new IndexRequest(props.getProperty("indexName"),
                props.getProperty("raw_metadataType")).source(item.toString());
        es.getBulkProcessor().add(ir);
    } catch (IOException e) {
        LOG.error("Error indexing metadata record!", e);
    }
}

From source file:esiptestbed.mudrod.metadata.pre.ApiHarvester.java

License:Apache License

/**
 * harvestMetadatafromWeb: Harvest metadata from PO.DAAC web service.
 */// w w w .ja va2 s. c  o  m
private void harvestMetadatafromWeb() {
    int startIndex = 0;
    int doc_length = 0;
    JsonParser parser = new JsonParser();
    do {
        String searchAPI = "https://podaac.jpl.nasa.gov/api/dataset?startIndex=" + Integer.toString(startIndex)
                + "&entries=10&sortField=Dataset-AllTimePopularity&sortOrder=asc&id=&value=&search=";
        HttpRequest http = new HttpRequest();
        String response = http.getRequest(searchAPI);

        JsonElement json = parser.parse(response);
        JsonObject responseObject = json.getAsJsonObject();
        JsonArray docs = responseObject.getAsJsonObject("response").getAsJsonArray("docs");

        doc_length = docs.size();

        File file = new File(props.getProperty(MudrodConstants.RAW_METADATA_PATH));
        if (!file.exists()) {
            if (file.mkdir()) {
                LOG.info("Directory is created!");
            } else {
                LOG.error("Failed to create directory!");
            }
        }
        for (int i = 0; i < doc_length; i++) {
            JsonElement item = docs.get(i);
            int docId = startIndex + i;
            File itemfile = new File(
                    props.getProperty(MudrodConstants.RAW_METADATA_PATH) + "/" + docId + ".json");

            try (FileWriter fw = new FileWriter(itemfile.getAbsoluteFile());
                    BufferedWriter bw = new BufferedWriter(fw);) {
                itemfile.createNewFile();
                bw.write(item.toString());
            } catch (IOException e) {
                LOG.error("Error writing metadata to local file!", e);
            }
        }

        startIndex += 10;

        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            LOG.error("Error entering Elasticsearch Mappings!", e);
            Thread.currentThread().interrupt();
        }

    } while (doc_length != 0);
}

From source file:esiptestbed.mudrod.recommendation.pre.ImportMetadata.java

License:Apache License

/**
 * importToES: Index metadata into elasticsearch from local file directory.
 * Please make sure metadata have been harvest from web service before
 * invoking this method./*from   w  w w.ja  va2 s .c  o  m*/
 */
private void importToES() {
    es.deleteType(props.getProperty("indexName"), props.getProperty("recom_metadataType"));

    es.createBulkProcessor();
    File directory = new File(props.getProperty("raw_metadataPath"));
    File[] fList = directory.listFiles();
    for (File file : fList) {
        InputStream is;
        try {
            is = new FileInputStream(file);
            try {
                String jsonTxt = IOUtils.toString(is);
                JsonParser parser = new JsonParser();
                JsonElement item = parser.parse(jsonTxt);
                IndexRequest ir = new IndexRequest(props.getProperty("indexName"),
                        props.getProperty("recom_metadataType")).source(item.toString());

                es.getBulkProcessor().add(ir);
            } catch (IOException e) {
                e.printStackTrace();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

    }

    es.destroyBulkProcessor();
}

From source file:eu.betaas.service.extendedservice.api.impl.LEZProcessor.java

License:Apache License

public synchronized void managePositionData(JsonObject data) {
    JsonObject jsonObj;//from  w  ww. j a va2  s.  c o  m
    JsonElement jsonElement;
    String lat, lon, userId;
    double latVal, lonVal;

    mLogger.info("Received position data");

    try {
        JsonObject serviceResult = data.getAsJsonObject(JSON_FIELD_SERVICE_RESULT);
        if (serviceResult == null) {
            mLogger.error("Cannot get ServiceResult");
            return;
        }

        JsonArray dataList = serviceResult.getAsJsonArray(JSON_FIELD_DATALIST);
        if (dataList == null) {
            mLogger.error("Cannot get dataList");
            return;
        }

        // scan all received points
        for (int i = 0; i < dataList.size(); i++) {
            jsonObj = dataList.get(i).getAsJsonObject();
            if (jsonObj == null) {
                mLogger.error("Cannot get data element n. " + i);
                return;
            }
            jsonElement = jsonObj.get(JSON_FIELD_USER_ID);
            if (jsonElement == null) {
                mLogger.error("Cannot get user ID from element n. " + i);
                return;
            }
            userId = jsonElement.toString();
            if (userId == null) {
                mLogger.error("Got null user ID from element n. " + i);
                return;
            }
            if (userId.startsWith("\""))
                userId = userId.substring(1);
            if (userId.endsWith("\""))
                userId = userId.substring(0, userId.length() - 1);
            if (userId.isEmpty()) {
                mLogger.error("Got empty user ID from element n. " + i);
                return;
            }

            try {
                jsonElement = jsonObj.get(JSON_FIELD_LAT);
                if (jsonElement == null) {
                    mLogger.error("Cannot get lat from element n. " + i);
                    return;
                }
                lat = jsonElement.toString();
                latVal = Double.parseDouble(lat);

                jsonElement = jsonObj.get(JSON_FIELD_LON);
                if (jsonElement == null) {
                    mLogger.error("Cannot get lon from element n. " + i);
                    return;
                }
                lon = jsonElement.toString();
                lonVal = Double.parseDouble(lon);

            } catch (Exception efe) {
                throw new Exception("Invalid numberic conversion on element n." + i + ": " + efe.getMessage());
            }

            processUserPosition(userId, latVal, lonVal);
        }

    } catch (Exception e) {
        mLogger.error("Cannot manage received position data: " + e.getMessage());
        e.printStackTrace();
    }

}

From source file:eu.betaas.service.extendedservice.api.impl.LEZProcessor.java

License:Apache License

public synchronized void manageTrafficData(JsonObject data) {
    JsonObject jsonObj;//w w  w  .j a v  a2s  .c o  m
    JsonElement jsonElement;
    String carsMinute, lat, lon;
    double latVal, lonVal;
    float carsMinuteVal;

    mLogger.info("Received traffic data");

    try {
        JsonObject serviceResult = data.getAsJsonObject(JSON_FIELD_SERVICE_RESULT);
        if (serviceResult == null) {
            mLogger.error("Cannot get ServiceResult");
            return;
        }

        JsonArray dataList = serviceResult.getAsJsonArray(JSON_FIELD_DATALIST);
        if (dataList == null) {
            mLogger.error("Cannot get dataList");
            return;
        }

        // scan all received elements
        for (int i = 0; i < dataList.size(); i++) {
            jsonObj = dataList.get(i).getAsJsonObject();
            if (jsonObj == null) {
                mLogger.error("Cannot get data element n. " + i);
                return;
            }

            try {
                jsonElement = jsonObj.get(JSON_FIELD_MEASUREMENT);
                if (jsonElement == null) {
                    mLogger.error("Cannot get measurement from element n. " + i);
                    return;
                }
                carsMinute = jsonElement.toString();
                if (carsMinute.startsWith("\""))
                    carsMinute = carsMinute.substring(1);
                if (carsMinute.endsWith("\""))
                    carsMinute = carsMinute.substring(0, carsMinute.length() - 1);
                carsMinuteVal = Float.parseFloat(carsMinute);

                jsonElement = jsonObj.get(JSON_FIELD_LAT);
                if (jsonElement == null) {
                    mLogger.error("Cannot get lat from element n. " + i);
                    return;
                }
                lat = jsonElement.toString();
                latVal = Double.parseDouble(lat);

                jsonElement = jsonObj.get(JSON_FIELD_LON);
                if (jsonElement == null) {
                    mLogger.error("Cannot get lon from element n. " + i);
                    return;
                }
                lon = jsonElement.toString();
                lonVal = Double.parseDouble(lon);

            } catch (Exception efe) {
                throw new Exception("Invalid numeric conversion on element n." + i + ": " + efe.getMessage());
            }

            processTrafficIntensity(latVal, lonVal, carsMinuteVal);
        }

    } catch (Exception e) {
        mLogger.error("Cannot manage received traffic data: " + e.getMessage());
    }
}

From source file:eu.betaas.service.servicemanager.application.RequestManager.java

License:Apache License

/**
 * @param dataList/*from  w  w w . j a v  a2  s.c o m*/
 * @param operator
 * @return the combined value
 * @throws Exception if the combination is not possible
 */
private String combine(JsonArray dataList, JsonElement operator) throws Exception {

    if ((dataList == null) || (operator == null)) {
        throw new Exception("null data list / operator");
    }

    int i;
    JsonObject measure;
    JsonElement el;
    String opr = operator.toString();
    opr = trim(opr);
    String value;

    if (opr == null)
        throw new Exception("null operator");

    if (opr.equalsIgnoreCase("OR")) {
        //////////////////////////////////// OR /////////////////////////////////
        boolean result = false;

        for (i = 0; i < dataList.size(); i++) {
            measure = dataList.get(i).getAsJsonObject();
            if (measure == null)
                throw new Exception("One of the measures is null");
            el = measure.get("measurement");
            if (el == null)
                throw new Exception("One of the measures is null");
            value = el.toString();
            value = trim(value);
            if ((value.equalsIgnoreCase("TRUE")) || (value.equals("1"))) {
                result = true;
                break;
            } else if ((!value.equalsIgnoreCase("FALSE")) && (!value.equals("0"))) {
                throw new Exception("Unexpected value with operation OR: " + value);
            }
        }
        if (result)
            return "true";
        else
            return "false";
    } else if (opr.equalsIgnoreCase("AND")) {
        //////////////////////////////////// AND /////////////////////////////////
        boolean result = true;

        for (i = 0; i < dataList.size(); i++) {
            measure = dataList.get(i).getAsJsonObject();
            if (measure == null)
                throw new Exception("One of the measures is null");
            el = measure.get("measurement");
            if (el == null)
                throw new Exception("One of the measures is null");
            value = el.toString();
            value = trim(value);
            if ((value.equalsIgnoreCase("FALSE")) || (value.equals("0"))) {
                result = false;
                break;
            } else if ((!value.equalsIgnoreCase("TRUE")) && (!value.equals("1"))) {
                throw new Exception("Unexpected value with operation OR: " + value);
            }
        }
        if (result)
            return "true";
        else
            return "false";
    } else if (opr.equalsIgnoreCase("AVERAGE")) {
        //////////////////////////////////// AVERAGE /////////////////////////////////
        float result = 0.0f;

        for (i = 0; i < dataList.size(); i++) {
            measure = dataList.get(i).getAsJsonObject();
            if (measure == null)
                throw new Exception("One of the measures is null");
            el = measure.get("measurement");
            if (el == null)
                throw new Exception("One of the measures is null");
            value = el.toString();
            value = trim(value);
            try {
                result += Float.parseFloat(value);
            } catch (Exception e) {
                throw new Exception("Error parsing numeric value for operation AVERAGE: " + value);
            }
        }
        if (i > 0)
            return Float.toString(result / i);
        else
            throw new Exception("Zero values to be averaged");
    } else if (opr.equalsIgnoreCase("SUM")) {
        //////////////////////////////////// SUM /////////////////////////////////
        float result = 0.0f;

        for (i = 0; i < dataList.size(); i++) {
            measure = dataList.get(i).getAsJsonObject();
            if (measure == null)
                throw new Exception("One of the measures is null");
            el = measure.get("measurement");
            if (el == null)
                throw new Exception("One of the measures is null");
            value = el.toString();
            value = trim(value);
            try {
                result += Float.parseFloat(value);
            } catch (Exception e) {
                throw new Exception("Error parsing numeric value for operation SUM: " + value);
            }
        }
        return Float.toString(result);
    }

    throw new Exception("Requested combination " + opr + " not supported for incoming data");
}

From source file:eu.riscoss.server.AnalysisManager.java

License:Apache License

private String getCustomData(JsonObject o, String id) {
    if (o == null)
        return null;
    o = o.getAsJsonObject();//  ww w  .j a v  a2s  . c  om
    if (o == null)
        return null;
    JsonElement e = o.get(id);
    if (e == null)
        return null;
    if (e.getAsJsonObject() == null)
        return null;
    return e.toString();
}