Examples of org.json_voltpatches.JSONStringer

org.json_voltpatches.JSONStringer
JSONStringer provides a quick and convenient way of producing JSON text. The texts produced strictly conform to JSON syntax rules. No whitespace is added, so the results are ready for transmission or storage. Each instance of JSONStringer can produce one JSON text.
A JSONStringer instance provides a value method for appending values to the text, and a key method for adding keys before values in objects. There are array and endArray methods that make and bound array values, and object and endObject methods which make and bound object values. All of these methods return the JSONWriter instance, permitting cascade style. For example,
```
 myString = new JSONStringer() .object() .key("JSON") .value("Hello, World!") .endObject() .toString();
```
which produces the string
```
 {"JSON":"Hello, World!"}
```
The first method called must be array or object. There are no methods for adding commas or colons. JSONStringer adds them for you. Objects and arrays can be nested up to 20 levels deep.
This can sometimes be easier than using a JSONObject to build a string. @author JSON.org @version 2008-09-18

     * Get a JSON representation of this table.
     * @return A string containing a JSON representation of this table.
     */
    @Override
    public String toJSONString() {
        JSONStringer js = new JSONStringer();
        try {


            js.object();


            // status code (1 byte)
            js.key(JSON_STATUS_KEY).value(getStatusCode());


            // column schema
            js.key(JSON_SCHEMA_KEY).array();
            for (int i = 0; i < getColumnCount(); i++) {
                js.object();
                js.key(JSON_NAME_KEY).value(getColumnName(i));
                js.key(JSON_TYPE_KEY).value(getColumnType(i).getValue());
                js.endObject();
            }
            js.endArray();


            // row data
            js.key(JSON_DATA_KEY).array();
            VoltTableRow row = cloneRow();
            row.resetRowPosition();
            while (row.advanceRow()) {
                js.array();
                for (int i = 0; i < getColumnCount(); i++) {
                    row.putJSONRep(i, js);
                }
                js.endArray();
            }
            js.endArray();


            js.endObject();
        }
        catch (JSONException e) {
            e.printStackTrace();
            throw new RuntimeException("Failed to serialized a table to JSON.", e);
        }
        return js.toString();
    }

View Full Code Here

        }
        boolean success = false;
        try {
            final FileOutputStream fos = new FileOutputStream(f);
            StringWriter sw = new StringWriter();
            JSONStringer stringer = new JSONStringer();
            try {
                stringer.object();
                stringer.key("version").value(1);
                stringer.key("txnId").value(txnId);
                stringer.key("timestamp").value(timestamp);
                stringer.key("timestampString").value(SnapshotUtil.formatHumanReadableDate(timestamp));
                stringer.key("newPartitionCount").value(newPartitionCount);
                stringer.key("tables").array();
                for (int ii = 0; ii < tables.size(); ii++) {
                    stringer.value(tables.get(ii).getTypeName());
                }
                stringer.endArray();
                stringer.key("exportSequenceNumbers").array();
                for (Map.Entry<String, Map<Integer, Pair<Long, Long>>> entry : exportSequenceNumbers.entrySet()) {
                    stringer.object();


                    stringer.key("exportTableName").value(entry.getKey());


                    stringer.key("sequenceNumberPerPartition").array();
                    for (Map.Entry<Integer, Pair<Long,Long>> sequenceNumber : entry.getValue().entrySet()) {
                        stringer.object();
                        stringer.key("partition").value(sequenceNumber.getKey());
                        //First value is the ack offset which matters for pauseless rejoin, but not persistence
                        stringer.key("exportSequenceNumber").value(sequenceNumber.getValue().getSecond());
                        stringer.endObject();
                    }
                    stringer.endArray();


                    stringer.endObject();
                }
                stringer.endArray();


                stringer.key("partitionTransactionIds").object();
                for (Map.Entry<Integer, Long> entry : partitionTransactionIds.entrySet()) {
                    stringer.key(entry.getKey().toString()).value(entry.getValue());
                }
                stringer.endObject();


                stringer.key("catalogCRC").value(catalogCRC);
                stringer.key("instanceId").value(instanceId.serializeToJSONObject());
                stringer.endObject();
            } catch (JSONException e) {
                throw new IOException(e);
            }


            sw.append(stringer.toString());


            final byte tableListBytes[] = sw.getBuffer().toString().getBytes("UTF-8");
            final PureJavaCrc32 crc = new PureJavaCrc32();
            crc.update(tableListBytes);
            ByteBuffer fileBuffer = ByteBuffer.allocate(tableListBytes.length + 4);

View Full Code Here

        int i = 0;
        int size = 0;
        try {
            for (Pair<AbstractExpression, Boolean> p : m_predicates) {
                final AbstractExpression predicate = p.getFirst();
                JSONStringer stringer = new JSONStringer();
                stringer.object();
                stringer.key("triggersDelete").value(p.getSecond());
                // If the predicate is null, EE will serialize all rows to the corresponding data
                // target. It's the same as passing an always-true expression,
                // but without the overhead of the evaluating the expression. This avoids the
                // overhead when there is only one data target that wants all the rows.
                if (predicate != null) {
                    stringer.key("predicateExpression").object();
                    predicate.toJSONString(stringer);
                    stringer.endObject();
                }
                stringer.endObject();
                predicates[i] = stringer.toString().getBytes(Charsets.UTF_8);
                size += predicates[i].length;
                i++;
            }
        } catch (Exception e) {
            VoltDB.crashLocalVoltDB("Failed to serialize snapshot predicates", true, e);

View Full Code Here

        else if (m_config.fileInfoOnly) {
            String collectionFilesListPath = m_config.voltdbroot + File.separator + m_config.prefix;


            byte jsonBytes[] = null;
            try {
                JSONStringer stringer = new JSONStringer();


                stringer.object();
                stringer.key("server").value(m_config.prefix);
                stringer.key("files").array();
                for (String path: collectionFilesList) {
                    stringer.object();
                    stringer.key("filename").value(path);
                    if (Arrays.asList(cmdFilenames).contains(path.split(" ")[0])) {
                        stringer.key("size").value(0);
                    }
                    else {
                        stringer.key("size").value(new File(path).length());
                    }
                    stringer.endObject();
                }
                stringer.endArray();
                stringer.endObject();


                JSONObject jsObj = new JSONObject(stringer.toString());
                jsonBytes = jsObj.toString(4).getBytes(Charsets.UTF_8);
            } catch (JSONException e) {
                Throwables.propagate(e);
            }

View Full Code Here

        return result;
    }


    @Override
    public String toJSONString() {
        JSONStringer stringer = new JSONStringer();
        try {
        stringer.object();
        toJSONString(stringer);
        stringer.endObject();
        } catch (JSONException e) {
            e.printStackTrace();
            return null;
        }
        return stringer.toString();
    }

View Full Code Here

        if (columnName == null || columnName.equals("")) {
            columnName = "column#" + m_columnIndex;
        }
        if (m_verboseExplainForDebugging) {
            columnName += " (as JSON: ";
            JSONStringer stringer = new JSONStringer();
            try
            {
                stringer.object();
                toJSONString(stringer);
                stringer.endObject();
                columnName += stringer.toString();
            }
            catch (Exception e)
            {
                columnName += "CORRUPTED beyond the ability to format? " + e;
                e.printStackTrace();

View Full Code Here

    }


    @Override
    public String toJSONString() {
        params.run();
        JSONStringer js = new JSONStringer();
        try {
            js.object();
            js.key("proc_name");
            js.value(procName);
            js.key("parameters");
            js.value(params.get());
            js.endObject();
        }
        catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("Failed to serialize an invocation to JSON.", e);
        }
        return js.toString();
    }

View Full Code Here

        File adFile = new VoltFile(overflowPath, nonce + ".ad");
        exportLog.info("Creating ad for " + nonce);
        assert(!adFile.exists());
        byte jsonBytes[] = null;
        try {
            JSONStringer stringer = new JSONStringer();
            stringer.object();
            stringer.key("database").value(m_database);
            writeAdvertisementTo(stringer);
            stringer.endObject();
            JSONObject jsObj = new JSONObject(stringer.toString());
            jsonBytes = jsObj.toString(4).getBytes(Charsets.UTF_8);
        } catch (JSONException e) {
            Throwables.propagate(e);
        }

View Full Code Here

        }


        // Initiate a snapshot with stream snapshot target
        String data = null;
        try {
            JSONStringer jsStringer = new JSONStringer();
            jsStringer.object();
            jsStringer.key("streamPairs");
            jsStringer.object();
            jsStringer.key(Long.toString(sourceSite)).value(Long.toString(hsId));
            jsStringer.endObject();
            // make this snapshot only contain data from this site
            m_rejoinLog.info("Rejoin source for site " + CoreUtils.hsIdToString(getSiteId()) +
                               " is " + CoreUtils.hsIdToString(sourceSite));
            jsStringer.endObject();
            data = jsStringer.toString();
        } catch (Exception e) {
            VoltDB.crashLocalVoltDB("Failed to serialize to JSON", true, e);
        }


        /*

View Full Code Here

    // For dev speed, we'll detect mastership changes here and construct and send this message to the
    // local client interface so we can keep the CIs implementation
    private void sendLeaderChangeNotify(long hsId, int partitionId)
    {
        try {
            JSONStringer stringer = new JSONStringer();
            stringer.object();
            stringer.key(JSON_PARTITION_ID).value(partitionId);
            stringer.key(JSON_INITIATOR_HSID).value(hsId);
            stringer.endObject();
            BinaryPayloadMessage bpm = new BinaryPayloadMessage(new byte[0], stringer.toString().getBytes("UTF-8"));
            int hostId = m_hostMessenger.getHostId();
            m_hostMessenger.send(CoreUtils.getHSIdFromHostAndSite(hostId,
                        HostMessenger.CLIENT_INTERFACE_SITE_ID),
                    bpm);
        }

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Related Classes of org.json_voltpatches.JSONStringer

org.voltcore.messaging.HostMessenger$Config

org.voltcore.utils.InstanceId

org.voltdb.ClientResponseImpl

org.voltdb.compiler.ClusterConfig

org.voltdb.compiler.DDLCompiler

org.voltdb.DefaultSnapshotDataTarget

org.voltdb.ExecutionSite

org.voltdb.export.ExportDataSource

org.voltdb.expressions.AbstractExpression

org.voltdb.expressions.TupleValueExpression

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