Java InEvent.getData方法代码示例

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
/**
 * Add new entry to time stamp map from the received event.
 *
 * @param event Event received by Siddhi.
 */
private void addDataToMap(InEvent event) {
    if (!isActive) {
        log.info("Received first event. Marking fault handling window processor as active");
        isActive = true;
    }
    String id = (String) event.getData()[memberIdAttrIndex];
    //checking whether this member is the topology.
    //sometimes there can be a delay between publishing member terminated events
    //and actually terminating instances. Hence CEP might get events for already terminated members
    //so we are checking the topology for the member existence
    Member member = getMemberFromId(id);
    if (null == member) {
        log.warn("Member not found in the topology. Event rejected");
        return;
    }
    if (StringUtils.isNotEmpty(id)) {
        memberTimeStampMap.put(id, event.getTimeStamp());
    } else {
        log.warn("NULL member id found in the event received. Event rejected.");
    }
    if (log.isDebugEnabled()) {
        log.debug("Event received from [member-id] " + id + " [time-stamp] " + event.getTimeStamp());
    }
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
/**
 * Add new entry to time stamp map from the received event.
 *
 * @param event Event received by Siddhi.
 */
private void addDataToMap(InEvent event) {
    if (!isActive) {
        log.info("Received first event. Marking fault handling window processor as active");
        isActive = true;
    }
    String id = (String) event.getData()[memberIdAttrIndex];
    //checking whether this member is the topology.
    //sometimes there can be a delay between publishing member terminated events
    //and actually terminating instances. Hence CEP might get events for already terminated members
    //so we are checking the topology for the member existence
    Member member = getMemberFromId(id);
    if (null == member) {
        log.warn(String.format("Member with [id] %s not found in the topology. Event rejected", id));
        return;
    }
    if (StringUtils.isNotEmpty(id)) {
        memberTimeStampMap.put(id, event.getTimeStamp());
    } else {
        log.warn("NULL member id found in the event received. Event rejected.");
    }
    if (log.isDebugEnabled()) {
        log.debug("Event received from [member-id] " + id + " [time-stamp] " + event.getTimeStamp());
    }
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
@Override
protected InStream processEvent(InEvent inEvent) {
    if (log.isDebugEnabled()) {
        log.debug("processEvent");
    }

    // Capture all data elements in the input stream
    Object [] inStreamData = inEvent.getData();
    Object [] outStreamData;

    // Perform Regression and get regression results
    Object [] temp = regressionCalculator.calculateLinearRegression(inEvent, paramPositions);

    // Send null until the first regression calculation
    if(regResult==null && temp==null){
        outStreamData = null;
    } else {
        // For each calculation, get new regression coefficients, otherwise send previous coefficients
        if(temp!=null) {
            regResult = temp;
        }

        // Combine Regression Results and Input Stream Data and send to OutputStream
        outStreamData = new Object[regResult.length + inStreamData.length];
        System.arraycopy(regResult, 0, outStreamData, 0, regResult.length);
        System.arraycopy(inStreamData, 0, outStreamData, regResult.length, inStreamData.length);
    }

    return new InEvent(inEvent.getStreamId(), System.currentTimeMillis(),  outStreamData);
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
@Override
protected InStream processEvent(InEvent inEvent) {

    if (log.isDebugEnabled()) {
        log.debug("processEvent");
    }
    Object [] inStreamData = inEvent.getData();
    Object[] outStreamData;
    Object[] temp = regressionCalculator.calculateLinearRegression(inEvent, paramPositions);

    if(regResult==null && temp==null){  // When calculation interval > 1, send null until the first regression calculation
        outStreamData = null;
    } else {
        double xDash = ((Number) exp.execute(inEvent)).doubleValue();

        // For each calculation, get new regression coefficients, otherwise use previous coefficients
        if(temp!=null) {
            // Calculating forecast Y based on regression equation and given X
            outStreamData = new Object[temp.length + inStreamData.length+1];
            outStreamData[0] = ((Number) temp[1]).doubleValue()+ xDash * ((Number) temp[2]).doubleValue();
            regResult = temp;
        } else {
            outStreamData = new Object[regResult.length + inStreamData.length+1];
            outStreamData[0] = ((Number) regResult[1]).doubleValue()+ xDash * ((Number) regResult[2]).doubleValue();
        }

        // Combining Regression Results and the Input Stream Data
        System.arraycopy(regResult, 0, outStreamData, 1, regResult.length);
        System.arraycopy(inStreamData, 0, outStreamData, regResult.length+1, inStreamData.length);
    }

    return new InEvent(inEvent.getStreamId(), System.currentTimeMillis(),  outStreamData);

}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
private String generateKey(InEvent event) {      // for performance reason if its all attribute we don't do the attribute list check
    StringBuilder stringBuilder = new StringBuilder();
    if (attributeIndexes.size() == 0) {
        for(Object data: event.getData()) {
            stringBuilder.append(data);
        }
    } else {
        for (int i = 0; i < event.getData().length; i++) {
            if (attributeIndexes.contains(i))
                stringBuilder.append(event.getData()[i]);
        }
    }
    return stringBuilder.toString();
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
private String generateKey(InEvent event) {
    StringBuilder stringBuilder = new StringBuilder();
    if (attributeIndexes.size() == 0) {
        for (Object data : event.getData()) {
            stringBuilder.append(data);
        }
    } else {
        for (int i = 0; i < event.getData().length; i++) {
            if (attributeIndexes.contains(i))
                stringBuilder.append(event.getData()[i]);
        }
    }
    return stringBuilder.toString();
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
@Override
public void processEvent(InEvent event) {
    acquireLock();
    try {
        long currentTime = (Long) event.getData(timeStampAttributePosition);
        removeExpiredEvent(currentTime);
        window.put(new RemoveEvent(event, currentTime + timeToKeep));
        nextProcessor.process(event);
    } finally {
        releaseLock();
    }
}
 

import org.wso2.siddhi.core.event.in.InEvent; //导入方法依赖的package包/类
@Override
protected InStream processEvent(InEvent inEvent) {
    if (log.isDebugEnabled()) {
        log.debug("processEvent");
    }

    Object [] outStreamData;
    Object [] temp;
    Object [] inStreamData = inEvent.getData();
    Boolean result = false; // Becomes true if its an outlier
    eventCount++;

    if(eventCount <= 3 || eventCount <= calcInterval) { // Need atleast 3 events to build the regression equation. Forecasting can be done after that.
        regResult = regressionCalculator.calculateLinearRegression(inEvent, paramPositions);
        outStreamData = null;
    } else {
        // Get the current X value
        Iterator<Map.Entry<Integer, String>> it = paramPositions.entrySet().iterator();
        it.next();
        double nextX = ((Number) inEvent.getData(it.next().getKey())).doubleValue();

        // Calculate the upper limit and the lower limit based on standard error and regression equation
        double forecastY = (Double) regResult[1] + nextX * (Double) regResult[2];
        double upLimit = (Double) regResult[0] * range + forecastY;
        double downLimit = - (Double) regResult[0] * range + forecastY;

        // Check whether next Y value is an outlier based on the next X value and the current regression equation
        double nextY = ((Number)inEvent.getData0()).doubleValue();
        if(nextY < downLimit || nextY > upLimit) {
            result = true;
        }
        temp = regressionCalculator.calculateLinearRegression(inEvent, paramPositions);
        if (temp!=null) {
            regResult = temp;
        }
        outStreamData = new Object[inStreamData.length + 4];
        outStreamData[0] = result;
        System.arraycopy(regResult,0,outStreamData, 1, regResult.length);
        System.arraycopy(inStreamData, 0, outStreamData, regResult.length+1, inStreamData.length);
    }

    return new InEvent(inEvent.getStreamId(), System.currentTimeMillis(), outStreamData);
}