Example usage for java.util Arrays hashCode

List of usage examples for java.util Arrays hashCode

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Introduction

In this page you can find the example usage for java.util Arrays hashCode.

Prototype

public static int hashCode(Object a[])

Source Link

Document

Returns a hash code based on the contents of the specified array.

Usage

From source file:com.cloudbees.plugins.credentials.SecretBytes.java

/**
 * {@inheritDoc}
 */
@Override
public int hashCode() {
    return Arrays.hashCode(value);
}

From source file:org.apache.kylin.storage.hbase.util.HbaseStreamingInput.java

public static void randomScan(String tableName) throws IOException {

    final Semaphore semaphore = new Semaphore(0);
    new Thread(new Runnable() {
        @Override/*w w  w. j a  va  2 s .c  o  m*/
        public void run() {
            scheduleJob(semaphore, 60000);//1 minutes a batch
        }
    }).start();

    while (true) {
        try {
            semaphore.acquire();
            int waiting = semaphore.drainPermits();
            if (waiting > 0) {
                logger.warn("Too many queries to handle! Blocking " + waiting + " sets of scan requests");
            }
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            e.printStackTrace();
        }

        Random r = new Random();
        Connection conn = getConnection();
        Table table = conn.getTable(TableName.valueOf(tableName));

        long leftBound = getFirstKeyTime(table);
        long rightBound = System.currentTimeMillis();

        for (int t = 0; t < 5; ++t) {
            long start = (long) (leftBound + r.nextDouble() * (rightBound - leftBound));
            long end = start + 600000;//a period of 10 minutes
            logger.info("A scan from " + formatTime(start) + " to " + formatTime(end));

            Scan scan = new Scan();
            scan.setStartRow(Bytes.toBytes(start));
            scan.setStopRow(Bytes.toBytes(end));
            scan.addFamily(CF);
            ResultScanner scanner = table.getScanner(scan);
            long hash = 0;
            int rowCount = 0;
            for (Result result : scanner) {
                Cell cell = result.getColumnLatestCell(CF, QN);
                byte[] value = cell.getValueArray();
                if (cell.getValueLength() != CELL_SIZE) {
                    logger.error("value size invalid!!!!!");
                }

                hash += Arrays.hashCode(Arrays.copyOfRange(value, cell.getValueOffset(),
                        cell.getValueLength() + cell.getValueOffset()));
                rowCount++;
            }
            scanner.close();
            logger.info("Scanned " + rowCount + " rows, the (meaningless) hash for the scan is " + hash);
        }
        table.close();
        conn.close();
    }
}

From source file:com.microsoft.tfs.core.externaltools.ExternalTool.java

/**
 * {@inheritDoc}//from  w ww  .jav a  2  s  .c  o  m
 */
@Override
public int hashCode() {
    int result = 17;

    result = result * 37 + command.hashCode();
    result = result * 37 + Arrays.hashCode(arguments);

    return result;
}

From source file:uk.ac.starlink.dpac.math.PolynomialFunction.java

/** {@inheritDoc} */
@Override//  w ww  . ja v  a  2  s  .  c o m
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + Arrays.hashCode(coefficients);
    return result;
}

From source file:de.hsheilbronn.mi.configuration.SvmConfigurationImpl.java

@Override
public int hashCode() {
    int result;/*from ww w.j  av  a2s. co m*/
    long temp;
    result = svmType != null ? svmType.hashCode() : 0;
    result = 31 * result + (kernelType != null ? kernelType.hashCode() : 0);
    result = 31 * result + degree;
    temp = Double.doubleToLongBits(gamma);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(coef0);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(nu);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(cacheSize);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(cost);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(eps);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(p);
    result = 31 * result + (int) (temp ^ (temp >>> 32));
    result = 31 * result + shrinking;
    result = 31 * result + probability;
    result = 31 * result + nrWeight;
    result = 31 * result + crossValidation;
    result = 31 * result + (weightLabel != null ? Arrays.hashCode(weightLabel) : 0);
    result = 31 * result + (weight != null ? Arrays.hashCode(weight) : 0);
    result = 31 * result + nFold;
    return result;
}

From source file:com.mapr.hbase.support.objects.MHRegionInfo090x.java

private void setHashCode() {
    int result = Arrays.hashCode(this.regionName);
    result ^= this.regionId;
    result ^= Arrays.hashCode(this.startKey);
    result ^= Arrays.hashCode(this.endKey);
    result ^= Boolean.valueOf(this.offLine).hashCode();
    result ^= this.tableDesc.hashCode();
    this.hashCode = result;
}

From source file:org.loklak.api.server.push.AbstractPushServlet.java

@SuppressWarnings("unchecked")
@Override//from w ww  . ja v  a 2 s .c  o  m
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    RemoteAccess.Post post = RemoteAccess.evaluate(request);
    String remoteHash = Integer.toHexString(Math.abs(post.getClientHost().hashCode()));

    // manage DoS
    if (post.isDoS_blackout()) {
        response.sendError(503, "your request frequency is too high");
        return;
    }

    String url = post.get("url", "");
    if (url == null || url.length() == 0) {
        response.sendError(400, "your request does not contain an url to your data object");
        return;
    }
    String screen_name = post.get("screen_name", "");
    if (screen_name == null || screen_name.length() == 0) {
        response.sendError(400, "your request does not contain required screen_name parameter");
        return;
    }

    Map<String, Object> map;
    byte[] jsonText;
    try {
        jsonText = ClientConnection.download(url);
        map = DAO.jsonMapper.readValue(jsonText, DAO.jsonTypeRef);
    } catch (Exception e) {
        response.sendError(400, "error reading json file from url");
        return;
    }

    // validation phase
    ProcessingReport report = this.validator.validate(new String(jsonText));
    if (!report.isSuccess()) {
        response.sendError(400,
                "json does not conform to schema : " + this.getValidatorSchema().name() + "\n" + report);
        return;
    }

    // conversion phase
    Object extractResults = extractMessages(map);
    List<Map<String, Object>> messages;
    if (extractResults instanceof List) {
        messages = (List<Map<String, Object>>) extractResults;
    } else if (extractResults instanceof Map) {
        messages = new ArrayList<>();
        messages.add((Map<String, Object>) extractResults);
    } else {
        throw new IOException("extractMessages must return either a List or a Map. Get "
                + (extractResults == null ? "null" : extractResults.getClass().getCanonicalName())
                + " instead");
    }
    List<Map<String, Object>> convertedMessages = this.converter.convert(messages);

    PushReport nodePushReport = new PushReport();
    ObjectWriter ow = new ObjectMapper().writerWithDefaultPrettyPrinter();
    // custom treatment for each message
    for (int i = 0; i < messages.size(); i++) {
        Map<String, Object> message = convertedMessages.get(i);
        message.put("source_type", this.getSourceType().name());
        message.put("location_source", LocationSource.USER.name());
        message.put("place_context", PlaceContext.ABOUT.name());
        if (message.get("text") == null) {
            message.put("text", "");
        }

        // append rich-text attachment
        String jsonToText = ow.writeValueAsString(messages.get(i));
        message.put("text", message.get("text") + MessageEntry.RICH_TEXT_SEPARATOR + jsonToText);
        customProcessing(message);

        if (message.get("mtime") == null) {
            String existed = PushServletHelper.checkMessageExistence(message);
            // message known
            if (existed != null) {
                messages.remove(i);
                nodePushReport.incrementKnownCount(existed);
                continue;
            }
            // updated message -> save with new mtime value
            message.put("mtime", Long.toString(System.currentTimeMillis()));
        }

        try {
            message.put("id_str", PushServletHelper.computeMessageId(message, getSourceType()));
        } catch (Exception e) {
            DAO.log("Problem computing id : " + e.getMessage());
        }
    }
    try {
        PushReport savingReport = PushServletHelper.saveMessagesAndImportProfile(convertedMessages,
                Arrays.hashCode(jsonText), post, getSourceType(), screen_name);
        nodePushReport.combine(savingReport);
    } catch (IOException e) {
        response.sendError(404, e.getMessage());
        return;
    }
    String res = PushServletHelper.buildJSONResponse(post.get("callback", ""), nodePushReport);

    post.setResponse(response, "application/javascript");
    response.getOutputStream().println(res);
    DAO.log(request.getServletPath() + " -> records = " + nodePushReport.getRecordCount() + ", new = "
            + nodePushReport.getNewCount() + ", known = " + nodePushReport.getKnownCount() + ", error = "
            + nodePushReport.getErrorCount() + ", from host hash " + remoteHash);
}

From source file:org.ameba.http.Response.java

@Override
public int hashCode() {
    int result = super.hashCode();
    result = 31 * result + (message != null ? message.hashCode() : 0);
    result = 31 * result + (messageKey != null ? messageKey.hashCode() : 0);
    result = 31 * result + (obj != null ? Arrays.hashCode(obj) : 0);
    result = 31 * result + (httpStatus != null ? httpStatus.hashCode() : 0);
    return result;
}

From source file:com.opengamma.analytics.financial.instrument.payment.CouponIborRatchetDefinition.java

@Override
public int hashCode() {
    final int prime = 31;
    int result = super.hashCode();
    result = prime * result + Arrays.hashCode(_capCoefficients);
    result = prime * result + Arrays.hashCode(_floorCoefficients);
    result = prime * result + Arrays.hashCode(_mainCoefficients);
    return result;
}

From source file:sadl.integration.MonteCarloIntegration.java

@Override
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + Arrays.hashCode(integral);
    result = prime * result + pointsToStore;
    result = prime * result + (preprocessed ? 1231 : 1237);
    return result;
}