anonymizer
Class Anonymizer

java.lang.Object
  anonymizer.Anonymizer

Direct Known Subclasses:

Anatomy, Datafly, Incognito_K, Incognito_L, Incognito_T, Mondrian

public abstract class Anonymizer
extends java.lang.Object

An abstract class for anonymization methods. Basic functions include reading data from a source and outputtung the results.

Every class that extends Anonymizer should implement methods for (1) creating an equivalence table, (2) creating an anonymized records table, (3) insertion into equivalence table, (3) insertion into anonymized records table and obviously, (5) anonymization.

Field Summary

protected AnonRecordTable	anonTable Current working anonRecords table
protected Configuration	conf Configuration object
protected EquivalenceTable	eqTable Current working equivalence table
protected SQLWrapper	sqlwrapper Embedded database connection object
protected int	suppressionThreshold Suppression threshold (required only if the method allows suppression)

Constructor Summary

Anonymizer(Configuration conf)
Class constructor

Method Summary

abstract void	anonymize() Anonymizes the input
static void	anonymizeDataset(Configuration conf)
static void	anonymizeDataset(java.lang.String[] args) Anonymize an input based on the specified argument list.
protected abstract AnonRecordTable	createAnonRecordsTable(java.lang.String tableName) Creates the anonymized records table
protected abstract EquivalenceTable	createEquivalenceTable(java.lang.String tableName) Creates the equivalence table
private void	generateDistributions() Generates quasi-identifier distributions for each quasi-identifier
protected abstract void	insertTupleToAnonTable(java.lang.String[] vals, long eid) Insert a tuple to the anonRecords table
protected abstract long	insertTupleToEquivalenceTable(java.lang.String[] vals) Insert a tuple to the equivalence table
protected java.util.LinkedList<java.lang.Long>	isReadyForSuppression(java.lang.String anonRecordTable) Checks if the generalized data is ready for suppression
static void	main(java.lang.String[] args)
void	outputResults_Anatomy() Output the results and close the connection to the database
void	outputResults_GenVals() Output the results and close the connection to the database
void	outputResults_GenValsDist() Output the results and close the connection to the database
void	outputResults() Output the results and close the connection to the database
void	readData() Read input data
protected void	suppressEquivalences(java.util.LinkedList<java.lang.Long> suppressionList) Suppress the equivalences with provided IDs.

Methods inherited from class java.lang.Object

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

Field Detail

conf

protected Configuration conf

Configuration object

eqTable

protected EquivalenceTable eqTable

Current working equivalence table

anonTable

protected AnonRecordTable anonTable

Current working anonRecords table

sqlwrapper

protected SQLWrapper sqlwrapper

Embedded database connection object

suppressionThreshold

protected int suppressionThreshold

Suppression threshold (required only if the method allows suppression)

Constructor Detail

Anonymizer

public Anonymizer(Configuration conf)

Class constructor

Method Detail

createEquivalenceTable

protected abstract EquivalenceTable createEquivalenceTable(java.lang.String tableName)

Creates the equivalence table

Parameters:

tableName - Name of the table

Returns:

The table that was just created

createAnonRecordsTable

protected abstract AnonRecordTable createAnonRecordsTable(java.lang.String tableName)

Creates the anonymized records table

Parameters:

tableName - Name of the table

Returns:

The table that was just created

insertTupleToEquivalenceTable

protected abstract long insertTupleToEquivalenceTable(java.lang.String[] vals)
                                               throws java.lang.Exception

Insert a tuple to the equivalence table

Parameters:

vals - All values of the tuple to be inserted (as read from the source, i.e., before any generalization)

Returns:

Equivalence id of the equivalence to which the tuple belongs

Throws:

java.lang.Exception

insertTupleToAnonTable

protected abstract void insertTupleToAnonTable(java.lang.String[] vals,
                                               long eid)
                                        throws java.lang.Exception

Insert a tuple to the anonRecords table

Parameters:

vals - All values of the tuple to be inserted (as read from the source, i.e., before any generalization)

eid - Equivalence id of the equivalence to which the tuple belongs

Throws:

java.lang.Exception

readData

public void readData()
              throws java.lang.Exception

Read input data

Throws:

java.lang.Exception

anonymize

public abstract void anonymize()
                        throws java.lang.Exception

Anonymizes the input

Throws:

java.lang.Exception

isReadyForSuppression

protected java.util.LinkedList<java.lang.Long> isReadyForSuppression(java.lang.String anonRecordTable)
                                                              throws java.lang.Exception

Checks if the generalized data is ready for suppression

Parameters:

anonRecordTable - Name of the current anonymization record table

Returns:

Empty list if already k-anonymous, List of EIDs of equivalences that should be suppressed if ready for suppression, null otherwise.

Throws:

java.lang.Exception

suppressEquivalences

protected void suppressEquivalences(java.util.LinkedList<java.lang.Long> suppressionList)

Suppress the equivalences with provided IDs.

Parameters:

suppressionList - IDs of equivalences to be suppressed

outputResults

public void outputResults()
                   throws java.lang.Exception

Output the results and close the connection to the database

Throws:

java.lang.Exception

outputResults_GenVals

public void outputResults_GenVals()
                           throws java.lang.Exception

Output the results and close the connection to the database

Throws:

java.lang.Exception

outputResults_GenValsDist

public void outputResults_GenValsDist()
                               throws java.lang.Exception

Output the results and close the connection to the database

Throws:

java.lang.Exception

generateDistributions

private void generateDistributions()
                            throws java.lang.Exception

Generates quasi-identifier distributions for each quasi-identifier

Throws:

java.lang.Exception

outputResults_Anatomy

public void outputResults_Anatomy()
                           throws java.lang.Exception

Output the results and close the connection to the database

Throws:

java.lang.Exception

anonymizeDataset

public static void anonymizeDataset(java.lang.String[] args)
                             throws java.lang.Exception

Anonymize an input based on the specified argument list.

Parameters:

args - list of program arguments.

Throws:

java.lang.Exception

anonymizeDataset

public static void anonymizeDataset(Configuration conf)
                             throws java.lang.Exception

Throws:

java.lang.Exception

main

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