/**
* Set the filter to be wrapped by this bean
*
* @param c a <code>features.filters.Filter</code> value
*/
public void setFilter(features.filters.Filter c) {
boolean loadImages = true;
if (c.getClass().getName().compareTo(m_Filter.getClass().getName()) == 0) {
loadImages = false;
}
m_Filter = c;
String filterName = c.getClass().toString();
filterName = filterName.substring(filterName.indexOf('.') + 1, filterName.length());
if (loadImages) {
if (m_Filter instanceof Visible) {
m_visual = ((Visible) m_Filter).getVisual();
} else {
if (!m_visual.loadIcons(
BeanVisual.ICON_PATH + filterName + ".gif",
BeanVisual.ICON_PATH + filterName + "_animated.gif")) {
useDefaultVisual();
}
}
}
m_visual.setText(filterName.substring(filterName.lastIndexOf('.') + 1, filterName.length()));
if (m_Filter instanceof LogWriter && m_log != null) {
((LogWriter) m_Filter).setLog(m_log);
}
if (!(m_Filter instanceof StreamableFilter) && (m_listenees.containsKey("instance"))) {
if (m_log != null) {
m_log.logMessage(
"[Filter] "
+ statusMessagePrefix()
+ " WARNING : "
+ m_Filter.getClass().getName()
+ " is not an incremental filter");
m_log.statusMessage(statusMessagePrefix() + "WARNING: Not an incremental filter.");
}
}
// get global info
m_globalInfo = KnowledgeFlowApp.getGlobalInfo(m_Filter);
}
/**
* Accept an instance for processing by StreamableFilters only
*
* @param e an <code>InstanceEvent</code> value
*/
public void acceptInstance(InstanceEvent e) {
// to do!
if (m_filterThread != null) {
String messg =
Messages.getInstance().getString("Filter_AcceptInstance_Mess_Text_First")
+ statusMessagePrefix()
+ Messages.getInstance().getString("Filter_AcceptInstance_Mess_Text_Second");
if (m_log != null) {
m_log.logMessage(messg);
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_First"));
} else {
System.err.println(messg);
}
return;
}
if (!(m_Filter instanceof StreamableFilter)) {
stop(); // stop all processing
if (m_log != null) {
m_log.logMessage(
Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_First")
+ statusMessagePrefix()
+ Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Second")
+ m_Filter.getClass().getName()
+ Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Third"));
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Second"));
}
return;
}
if (e.getStatus() == InstanceEvent.FORMAT_AVAILABLE) {
try {
m_instanceCount = 0;
// notifyInstanceListeners(e);
// Instances dataset = e.getInstance().dataset();
Instances dataset = e.getStructure();
if (m_Filter instanceof SupervisedFilter) {
// defualt to last column if no class is set
if (dataset.classIndex() < 0) {
dataset.setClassIndex(dataset.numAttributes() - 1);
}
}
// initialize filter
m_Filter.setInputFormat(dataset);
// attempt to determine post-filtering
// structure. If successful this can be passed on to instance
// listeners as a new FORMAT_AVAILABLE event.
m_structurePassedOn = false;
try {
if (m_Filter.isOutputFormatDefined()) {
// System.err.println("Filter - passing on output format...");
// System.err.println(m_Filter.getOutputFormat());
m_ie.setStructure(m_Filter.getOutputFormat());
notifyInstanceListeners(m_ie);
m_structurePassedOn = true;
}
} catch (Exception ex) {
stop(); // stop all processing
if (m_log != null) {
m_log.logMessage(
Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Fourth")
+ statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_LogMessage_Text_Fifth")
+ ex.getMessage());
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Third"));
} else {
System.err.println(
Messages.getInstance().getString("Filter_AcceptInstance_Error_Text_First")
+ statusMessagePrefix()
+ Messages.getInstance().getString("Filter_AcceptInstance_Error_Text_Second"));
}
}
} catch (Exception ex) {
ex.printStackTrace();
}
return;
}
if (e.getStatus() == InstanceEvent.BATCH_FINISHED) {
// get the last instance (if available)
try {
if (m_log != null) {
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Fourth"));
}
if (m_Filter.input(e.getInstance())) {
Instance filteredInstance = m_Filter.output();
if (filteredInstance != null) {
if (!m_structurePassedOn) {
// pass on the new structure first
m_ie.setStructure(new Instances(filteredInstance.dataset(), 0));
notifyInstanceListeners(m_ie);
m_structurePassedOn = true;
}
m_ie.setInstance(filteredInstance);
// if there are instances pending for output don't want to send
// a batch finisehd at this point...
// System.err.println("Filter - in batch finisehd...");
if (m_Filter.batchFinished() && m_Filter.numPendingOutput() > 0) {
m_ie.setStatus(InstanceEvent.INSTANCE_AVAILABLE);
} else {
m_ie.setStatus(e.getStatus());
}
notifyInstanceListeners(m_ie);
}
}
if (m_log != null) {
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Fourth_Alpha"));
}
} catch (Exception ex) {
stop(); // stop all processing
if (m_log != null) {
m_log.logMessage(
Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Sixth")
+ statusMessagePrefix()
+ ex.getMessage());
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Fifth"));
}
ex.printStackTrace();
}
// check for any pending instances that we might need to pass on
try {
if (m_Filter.batchFinished() && m_Filter.numPendingOutput() > 0) {
if (m_log != null) {
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Sixth"));
}
Instance filteredInstance = m_Filter.output();
if (filteredInstance != null) {
if (!m_structurePassedOn) {
// pass on the new structure first
m_ie.setStructure(new Instances(filteredInstance.dataset(), 0));
notifyInstanceListeners(m_ie);
m_structurePassedOn = true;
}
m_ie.setInstance(filteredInstance);
// TODO here is the problem I think
m_ie.setStatus(InstanceEvent.INSTANCE_AVAILABLE);
notifyInstanceListeners(m_ie);
}
while (m_Filter.numPendingOutput() > 0) {
filteredInstance = m_Filter.output();
m_ie.setInstance(filteredInstance);
// System.err.println("Filter - sending pending...");
if (m_Filter.numPendingOutput() == 0) {
m_ie.setStatus(InstanceEvent.BATCH_FINISHED);
} else {
m_ie.setStatus(InstanceEvent.INSTANCE_AVAILABLE);
}
notifyInstanceListeners(m_ie);
}
if (m_log != null) {
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Seventh"));
}
}
} catch (Exception ex) {
stop(); // stop all processing
if (m_log != null) {
m_log.logMessage(
Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Seventh")
+ statusMessagePrefix()
+ ex.toString());
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Eighth"));
}
ex.printStackTrace();
}
} else {
// pass instance through the filter
try {
if (!m_Filter.input(e.getInstance())) {
// System.err.println("Filter - inputing instance into filter...");
/* if (m_log != null) {
m_log.logMessage("ERROR : filter not ready to output instance");
} */
// quietly return. Filter might be able to output some instances
// once the batch is finished.
return;
}
// collect output instance.
Instance filteredInstance = m_Filter.output();
if (filteredInstance == null) {
return;
}
m_instanceCount++;
if (!m_structurePassedOn) {
// pass on the new structure first
m_ie.setStructure(new Instances(filteredInstance.dataset(), 0));
notifyInstanceListeners(m_ie);
m_structurePassedOn = true;
}
m_ie.setInstance(filteredInstance);
m_ie.setStatus(e.getStatus());
if (m_log != null && (m_instanceCount % 10000 == 0)) {
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Nineth")
+ m_instanceCount
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Tenth"));
}
notifyInstanceListeners(m_ie);
} catch (Exception ex) {
stop(); // stop all processing
if (m_log != null) {
m_log.logMessage(
Messages.getInstance().getString("Filter_AcceptInstance_LogMessage_Text_Eighth")
+ statusMessagePrefix()
+ ex.toString());
m_log.statusMessage(
statusMessagePrefix()
+ Messages.getInstance()
.getString("Filter_AcceptInstance_StatusMessage_Text_Eleventh"));
}
ex.printStackTrace();
}
}
}