Examples of org.json_voltpatches.JSONArray

org.json_voltpatches.JSONArray
A JSONArray is an ordered sequence of values. Its external text form is a string wrapped in square brackets with commas separating the values. The internal form is an object having get and opt methods for accessing the values by index, and put methods for adding or replacing values. The values can be any of these types: Boolean, JSONArray, JSONObject, Number, String, or the JSONObject.NULL object.
The constructor can convert a JSON text into a Java object. The toString method converts to JSON text.
A get method returns a value if one can be found, and throws an exception if one cannot be found. An opt method returns a default value instead of throwing an exception, and so is useful for obtaining optional values.
The generic get() and opt() methods return an object which you can cast or query for type. There are also typed get and opt methods that do type checking and type coercion for you.
The texts produced by the toString methods strictly conform to JSON syntax rules. The constructors are more forgiving in the texts they will accept:
- An extra , (comma) may appear just before the closing bracket.
- The null value will be inserted when there is , (comma) elision.
- Strings may be quoted with ' (single quote).
- Strings do not need to be quoted at all if they do not begin with a quote or single quote, and if they do not contain leading or trailing spaces, and if they do not contain any of these characters: { } [ ] / \ : , = ; # and if they do not look like numbers and if they are not the reserved words true, false, or null.
- Values can be separated by ; (semicolon) as well as by , (comma).
- Numbers may have the 0x- (hex) prefix.
@author JSON.org @version 2009-04-14


        /*
         * Create an array containing an ad for every node including this one
         * even though the connection has already been made
         */
        JSONArray jsArray = new JSONArray();
        JSONObject hostObj = new JSONObject();
        hostObj.put("hostId", getHostId());
        hostObj.put("address",
                m_config.internalInterface.isEmpty() ?
                        socket.socket().getLocalAddress().getHostAddress() : m_config.internalInterface);
        hostObj.put("port", m_config.internalPort);
        jsArray.put(hostObj);
        for (Map.Entry<Integer, ForeignHost>  entry : m_foreignHosts.entrySet()) {
            if (entry.getValue() == null) continue;
            int hsId = entry.getKey();
            ForeignHost fh = entry.getValue();
            hostObj = new JSONObject();
            hostObj.put("hostId", hsId);
            hostObj.put("address", fh.m_listeningAddress.getAddress().getHostAddress());
            hostObj.put("port", fh.m_listeningAddress.getPort());
            jsArray.put(hostObj);
        }
        jsObj.put("hosts", jsArray);
        byte messageBytes[] = jsObj.toString(4).getBytes("UTF-8");
        ByteBuffer message = ByteBuffer.allocate(4 + messageBytes.length);
        message.putInt(messageBytes.length);

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            /*
             * Loop over all the hosts and create a connection (except for the first entry, that is the leader)
             * and publish the host id that was generated. This finishes creating the mesh
             */
            JSONArray otherHosts = jsonObj.getJSONArray("hosts");
            int hostIds[] = new int[otherHosts.length()];
            SocketChannel hostSockets[] = new SocketChannel[hostIds.length];
            InetSocketAddress listeningAddresses[] = new InetSocketAddress[hostIds.length];


            for (int ii = 0; ii < otherHosts.length(); ii++) {
                JSONObject host = otherHosts.getJSONObject(ii);
                String address = host.getString("address");
                int port = host.getInt("port");
                final int hostId = host.getInt("hostId");


                LOG.info("Leader provided address " + address + ":" + port);

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    }


    public static Response responseFromJSON(String jsonStr) throws JSONException, IOException {
        Response response = new Response();
        JSONObject jsonObj = new JSONObject(jsonStr);
        JSONArray resultsJson = jsonObj.getJSONArray("results");
        response.results = new VoltTable[resultsJson.length()];
        for (int i = 0; i < response.results.length; i++) {
            JSONObject tableJson = resultsJson.getJSONObject(i);
            response.results[i] =  VoltTable.fromJSONObject(tableJson);
        }
        if (jsonObj.isNull("status") == false) {
            response.status = (byte) jsonObj.getInt("status");
        }

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                if (f.canRead()) {
                    try {
                        Set<String> tableNames = new HashSet<String>();
                        JSONObject digest = SnapshotUtil.CRCCheck(f, SNAP_LOG);
                        if (digest == null) continue;
                        JSONArray tables = digest.getJSONArray("tables");
                        for (int ii = 0; ii < tables.length(); ii++) {
                            tableNames.add(tables.getString(ii));
                        }
                        final StringWriter sw = new StringWriter();
                        int ii = 0;
                        for (String name : tableNames) {
                            sw.append(name);

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        AdHocPlannedStatement plannedStatement = plannedStatements.get(i);
        String aggplan = new String(plannedStatement.core.aggregatorFragment, Constants.UTF8ENCODING);
        PlanNodeTree pnt = new PlanNodeTree();
        try {
            JSONObject jobj = new JSONObject( aggplan );
            JSONArray jarray =  jobj.getJSONArray(PlanNodeTree.Members.PLAN_NODES.name());
            pnt.loadFromJSONArray(jarray, db);


            if( plannedStatement.core.collectorFragment != null ) {
                //multi-partition query plan
                String collplan = new String(plannedStatement.core.collectorFragment, Constants.UTF8ENCODING);

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    private ImmutableList<Stream> parseStreams(JSONObject jsData)
    {
        ImmutableList.Builder<Stream> builder = ImmutableList.builder();


        try {
            JSONArray streamArray = jsData.getJSONArray("streams");


            for (int i = 0; i < streamArray.length(); i++) {
                JSONObject streamObj = streamArray.getJSONObject(i);


                Integer newPartition = null;
                if (!streamObj.isNull("newPartition")) {
                    newPartition = Integer.parseInt(streamObj.getString("newPartition"));
                }

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                @SuppressWarnings("unchecked")
                Iterator<String> it = sp.keys();
                while (it.hasNext()) {
                    String key = it.next();
                    long sourceHSId = Long.valueOf(key);
                    JSONArray destJSONArray = sp.getJSONArray(key);
                    for (int i = 0; i < destJSONArray.length(); i++) {
                        long destHSId = destJSONArray.getLong(i);
                        streamPairs.put(sourceHSId, destHSId);
                    }
                }
            } catch (JSONException e) {
                SNAP_LOG.warn("Failed to parse stream pair information", e);

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     * @throws JSONException on JSON-related error.
     * @throws IOException if thrown by our JSON library.
     */
    public static VoltTable fromJSONObject(JSONObject json) throws JSONException, IOException {
        // extract the schema and creat an empty table
        JSONArray jsonCols = json.getJSONArray(JSON_SCHEMA_KEY);
        ColumnInfo[] columns = new ColumnInfo[jsonCols.length()];
        for (int i = 0; i < jsonCols.length(); i++) {
            JSONObject jsonCol = jsonCols.getJSONObject(i);
            String name = jsonCol.getString(JSON_NAME_KEY);
            VoltType type = VoltType.get((byte) jsonCol.getInt(JSON_TYPE_KEY));
            columns[i] = new ColumnInfo(name, type);
        }
        VoltTable t = new VoltTable(columns);


        // set the status byte
        byte status = (byte) json.getInt(JSON_STATUS_KEY);
        t.setStatusCode(status);


        // load the row data
        JSONArray data = json.getJSONArray(JSON_DATA_KEY);
        for (int i = 0; i < data.length(); i++) {
            JSONArray jsonRow = data.getJSONArray(i);
            assert(jsonRow.length() == jsonCols.length());
            Object[] row = new Object[jsonRow.length()];
            for (int j = 0; j < jsonRow.length(); j++) {
                row[j] = jsonRow.get(j);
                if (row[j] == JSONObject.NULL)
                    row[j] = null;
                VoltType type = columns[j].type;


                // convert strings to numbers

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    {
        final List<Table> tables = SnapshotUtil.getTablesToSave(catalogDatabase);
        final Set<Integer> tableIdsToInclude = new HashSet<Integer>();


        if (jsData != null) {
            JSONArray tableIds = jsData.optJSONArray("tableIds");
            if (tableIds != null) {
                for (int i = 0; i < tableIds.length(); i++) {
                    try {
                        tableIdsToInclude.add(tableIds.getInt(i));
                    } catch (JSONException e) {
                        SNAP_LOG.warn("Unable to parse tables to include for stream snapshot", e);
                    }
                }
            }

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     * If this cluster has per partition transactions ids carried over from
     * previous instances, retrieve them from ZK and pass them to snapshot save so that it can
     * include them in the snapshot
     */
    private JSONArray retrievePerPartitionTransactionIds() {
        JSONArray retval = new JSONArray();
        try {
            ByteBuffer values = ByteBuffer.wrap(m_zk.getData(VoltZK.perPartitionTxnIds, false, null));
            int numKeys = values.getInt();
            for (int ii = 0; ii < numKeys; ii++) {
                retval.put(values.getLong());
            }
        } catch (KeeperException.NoNodeException e) {/*doesn't have to exist*/}
        catch (Exception e) {
            VoltDB.crashLocalVoltDB("Failed to retrieve per partition transaction ids for snapshot", false, e);
        }

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org.voltcore.messaging.SocketJoiner

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org.voltdb.compiler.TestClusterCompiler

org.voltdb.export.ExportDataSource

org.voltdb.expressions.AbstractExpression

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org.voltdb.iv2.LeaderAppointer

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