its.app
Class SddFilter

java.lang.Object
  its.backbone.frame.ItsFrameReceiver
      its.backbone.sdd.SddReceiver
          its.backbone.sdd.SddOperator
              its.app.SddFilter

All Implemented Interfaces:

AcceptRow, java.lang.Runnable

public class SddFilter

extends SddOperator

implements AcceptRow

SDDFilter illustrates how to build an SDD Operator. It receives an SDD data stream, filters according to the deny and allow configuration files, and sends the remaining data out on the specified port as SDD.
Usage: SddFilter < request port > < server > < server port > < deny file > [allow file] -logallow -logdeny
< request port > is the port this transmitter will accept connections on
< server > is the computer of upstream sdd transmitter
< server port > is the port of the upstream sdd transmitter
< deny file > the file with deny filter elements
[allow file] the optional file with allow filter elements
The language of filter files is: < table name > . < field name > < operator > < value > OR < table name > .all
The < value > can be a string, integer, or a bit sequence.
A bit sequence is specified as: < table name > . < field name > [< start index > - < end index > ]
The < start index > and optional [end index] are inclusive indices of bits.
The < operator > is an operator from the user specified language. See also its.util.Filter
The < val > is the value to match against.
-logallow flag results in any allowed row to be logged to the ErrorLogger
-logdeny flag results in any denied row to be logged to the ErrorLogger

Field Summary

Fields inherited from class its.backbone.frame.ItsFrameReceiver

ignoreStreamTimeout

Constructor Summary

SddFilter(int requestPort, java.lang.String serverName, int serverPort)

Method Summary

boolean	acceptRow(ContentsData cd) implementation of the AcceptRow.acceptRow method This method is used by ContentsData.filter to determine if a row should be removed.
void	extractedDataReceived(java.util.Hashtable ht, java.lang.String serialNum) Subclasses can override this method to receive the incoming SDD data after it has been processed into a table of ContentsData objects.
static void	main(java.lang.String[] args)

Methods inherited from class its.backbone.sdd.SddOperator

contentsReceived, schemaReceived, setTimeout, setTransmitterSerialNumbers, setTransmitterSerialNumbers, startPulse, transmitContents, transmitData, transmitSchema

Methods inherited from class its.backbone.sdd.SddReceiver

dataReceived, extractorReceived, frameReceived, getContentsSerialNumber, getSchemaSerialNumber

Methods inherited from class its.backbone.frame.ItsFrameReceiver

getFrameQueue, getInputBuffer, run, start, start, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SddFilter

public SddFilter(int requestPort,
                 java.lang.String serverName,
                 int serverPort)
          throws java.io.IOException

Method Detail

main

public static void main(java.lang.String[] args)

extractedDataReceived

public void extractedDataReceived(java.util.Hashtable ht,
                                  java.lang.String serialNum)

Description copied from class: SddReceiver

Subclasses can override this method to receive the incoming SDD data after it has been processed into a table of ContentsData objects.

Overrides:

extractedDataReceived in class SddOperator

acceptRow

public boolean acceptRow(ContentsData cd)

implementation of the AcceptRow.acceptRow method This method is used by ContentsData.filter to determine if a row should be removed. The ContentsData object calls this method once for each row it contains after adjusting it's internal index accordingly. The logic here is as follows: if (match an allow value) then allow the row else if (match a deny value) then deny the row else allow the row

Specified by:

acceptRow in interface AcceptRow

Parameters:

cd - the ContentsData who's current row is being questioned