Example usage for javax.json JsonArray getJsonNumber

Introduction

In this page you can find the example usage for javax.json JsonArray getJsonNumber.

Prototype

JsonNumber getJsonNumber(int index);

Source Link

Document

Returns the number value at the specified position in this array.

Usage

From source file:com.buffalokiwi.aerodrome.jet.Utils.java

/**
 * Convert a json array to a list of integers.
 * if arr is null, then an empty List<Integer> instance is returned.
 * /*from  w w  w.j av a2s .c  o m*/
 * This is more safe than JsonArray.getValuesAs() as this method
 * has built-in type checking and will throw a ClassCastException if 
 * the type is incorrect or null.
 * 
 * @param arr array
 * @return a list
 * @throws ClassCastException if any element in arr is not an integer
 */
public static List<Long> jsonArrayToLongList(final JsonArray arr) {
    final List<Long> out = new ArrayList<>();
    if (arr == null)
        return out;

    for (int i = 0; i < arr.size(); i++) {
        final long j = Utils.getJsonNumber(arr.getJsonNumber(i)).longValue();
        out.add(j);
    }

    return out;
}

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From source file:io.hops.hopsworks.common.util.WebCommunication.java

public List<NodesTableItem> getNdbinfoNodesTable(String hostAddress, String agentPassword)
        throws GenericException {
    List<NodesTableItem> resultList = new ArrayList<NodesTableItem>();

    String url = createUrl("mysql", hostAddress, "ndbinfo", "nodes");
    String jsonString = fetchContent(url, agentPassword);
    InputStream stream = new ByteArrayInputStream(jsonString.getBytes(StandardCharsets.UTF_8));
    try {//from w  ww .ja  va2  s. co m
        JsonArray json = Json.createReader(stream).readArray();
        if (json.get(0).equals("Error")) {
            resultList.add(new NodesTableItem(null, json.getString(1), null, null, null));
            return resultList;
        }
        for (int i = 0; i < json.size(); i++) {
            JsonArray node = json.getJsonArray(i);
            Integer nodeId = node.getInt(0);
            Long uptime = node.getJsonNumber(1).longValue();
            String status = node.getString(2);
            Integer startPhase = node.getInt(3);
            Integer configGeneration = node.getInt(4);
            resultList.add(new NodesTableItem(nodeId, status, uptime, startPhase, configGeneration));
        }
    } catch (Exception ex) {
        logger.log(Level.SEVERE, "Exception: {0}", ex);
        resultList.add(new NodesTableItem(null, "Error", null, null, null));
    }
    return resultList;
}

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