org.deidentifier.arx

Class DataHandle

java.lang.Object

org.deidentifier.arx.DataHandle

Direct Known Subclasses:

DataHandleInput, DataHandleOutput, DataHandleSubset

public abstract class DataHandle
extends java.lang.Object

This class provides access to dictionary encoded data. Furthermore, the data is linked to the associated input or output data. This means that, e.g., if the input data is sorted, the output data will be sorted accordingly. This ensures that original tuples and their generalized counterpart will always have the same row index, which is important for many use cases, e.g., for graphical tools that allow to compare the original dataset to generalized versions.

Field Summary

Fields

Modifier and Type	Field and Description
protected DataType<?>[]	columnToDataType The data types.
protected DataDefinition	definition The data definition.
protected java.lang.String[]	header The header.
protected com.carrotsearch.hppc.ObjectIntOpenHashMap<java.lang.String>	headerMap The header.
protected ARXLattice.ARXNode	node The node.
protected org.deidentifier.arx.DataRegistry	registry The current registry.
protected DataHandle	subset The current research subset.

Constructor Summary

Constructors

Constructor and Description
DataHandle()

Method Summary

Modifier and Type	Method and Description
protected void	checkColumn(int column1) Checks a column index.
protected void	checkColumns(int[] columns) Checks the column indexes.
protected void	checkReleased() Checks whether a registry is referenced.
protected void	checkRow(int row1, int length) Checks a row index.
protected abstract void	doRelease() Releases all resources.
abstract java.lang.String	getAttributeName(int col) Returns the name of the specified column.
protected DataType<?>	getBaseDataType(java.lang.String attribute) Returns the base data type without generalization.
int	getColumnIndexOf(java.lang.String attribute) Returns the index of the given attribute, -1 if it is not in the header.
protected abstract DataType<?>[]	getColumnToDataType() Generates an array of data types.
protected abstract ARXConfiguration	getConfiguration() Returns the ARXConfiguration that is currently being used, null if this is an input handle
DataType<?>	getDataType(java.lang.String attribute) Returns the according data type.
java.util.Date	getDate(int row, int col) Returns a date/time value from the specified cell.
DataDefinition	getDefinition() Returns the data definition.
java.lang.String[]	getDistinctValues(int column) Returns an array containing the distinct values in the given column.
protected abstract java.lang.String[]	getDistinctValues(int column, boolean ignoreSuppression, DataHandleInternal.InterruptHandler handler) Returns the distinct values.
java.lang.Double	getDouble(int row, int col) Returns a double value from the specified cell.
java.lang.Float	getFloat(int row, int col) Returns a float value from the specified cell.
abstract int	getGeneralization(java.lang.String attribute) Returns the generalization level for the attribute.
java.lang.Integer	getInt(int row, int col) Returns an int value from the specified cell.
java.lang.Long	getLong(int row, int col) Returns a long value from the specified cell.
java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column) Returns a mapping from data types to the relative number of values that conform to the according type.
<U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.lang.Class<U> clazz) Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class.
<U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.lang.Class<U> clazz, double threshold) Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class.
<U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.lang.Class<U> clazz, java.util.Locale locale) Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class.
<U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.lang.Class<U> clazz, java.util.Locale locale, double threshold) Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class.
java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, double threshold) Returns a mapping from data types to the relative number of values that conform to the according type.
java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.util.Locale locale) Returns a mapping from data types to the relative number of values that conform to the according type This method only returns types that match at least 80% of all values in the column .
java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>>	getMatchingDataTypes(int column, java.util.Locale locale, double threshold) Returns a mapping from data types to the relative number of values that conform to the according type.
java.lang.String[]	getNonConformingValues(int column, DataType<?> type, int max) Returns a set of values that do not conform to the given data type.
abstract int	getNumColumns() Returns the number of columns in the dataset.
int	getNumConformingValues(int column, DataType<?> type) Returns the number of (distinct) values that conform to the given data type.
abstract int	getNumRows() Returns the number of rows in the dataset.
protected org.deidentifier.arx.DataRegistry	getRegistry() Returns the registry associated with this handle.
RiskEstimateBuilder	getRiskEstimator() Returns a risk estimator, using the US population if required
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model) Returns a risk estimator
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model, ARXSolverConfiguration config) Returns a risk estimator
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model, RiskModelHistogram classes) Returns a risk estimator for the given set of equivalence classes.
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model, RiskModelHistogram classes, ARXSolverConfiguration config) Returns a risk estimator for the given set of equivalence classes.
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model, java.util.Set<java.lang.String> qis) Returns a risk estimator for the given set of quasi-identifiers
RiskEstimateBuilder	getRiskEstimator(ARXPopulationModel model, java.util.Set<java.lang.String> qis, ARXSolverConfiguration config) Returns a risk estimator for the given set of quasi-identifiers
abstract StatisticsBuilder	getStatistics() Returns an object providing access to basic descriptive statistics about the data represented by this handle.
ARXLattice.ARXNode	getTransformation() Returns the transformation .
abstract java.lang.String	getValue(int row, int col) Returns the value in the specified cell.
protected abstract int	getValueIdentifier(int column, java.lang.String value) Returns the internal value identifier
DataHandle	getView() Returns a new data handle that represents a context specific view on the dataset.
protected int	internalCompare(int row1, int row2, int[] columns, boolean ascending) A negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.
protected abstract int	internalGetEncodedValue(int row, int col, boolean ignoreSuppression) Internal representation of get encoded value.
protected abstract java.lang.String	internalGetValue(int row, int col, boolean ignoreSuppression) Internal representation of get value.
protected abstract boolean	internalIsOutlier(int row, int[] columns) Returns whether this is an outlier regarding the given columns.
protected abstract boolean	internalReplace(int column, java.lang.String original, java.lang.String replacement) Internal replacement method.
protected boolean	isAnonymous() Returns whether the data represented by this handle is anonymous
boolean	isOptimized() Has this handle been optimized with local recoding?
boolean	isOutlier(int row) Determines whether a given row is an outlier in the currently associated data transformation.
boolean	isReleased() Determines whether this handle is orphaned, i.e., should not be used anymore
boolean	isSuppressed(int row) Determines whether a given row is completely suppressed
abstract java.util.Iterator<java.lang.String[]>	iterator() Returns an iterator over the data.
void	release() Releases this handle and all associated resources.
ElementData	render() Renders this object
boolean	replace(int column, java.lang.String original, java.lang.String replacement) Replaces the original value with the replacement in the given column.
void	save(java.io.File file) Writes the data to a CSV file.
void	save(java.io.File file, char separator) Writes the data to a CSV file.
void	save(java.io.File file, CSVSyntax config) Writes the data to a CSV file.
void	save(java.io.OutputStream out) Writes the data to a CSV file.
void	save(java.io.OutputStream out, char separator) Writes the data to a CSV file.
void	save(java.io.OutputStream out, CSVSyntax config) Writes the data to a CSV file.
void	save(java.lang.String path) Writes the data to a CSV file.
void	save(java.lang.String path, char separator) Writes the data to a CSV file.
void	save(java.lang.String path, CSVSyntax config) Writes the data to a CSV file.
protected void	setHeader(java.lang.String[] header) Sets the current header
protected void	setRegistry(org.deidentifier.arx.DataRegistry registry) Updates the registry.
protected void	setView(DataHandle handle) Sets the subset.
void	sort(boolean ascending, int... columns) Sorts the dataset according to the given columns.
void	sort(int from, int to, boolean ascending, int... columns) Sorts the dataset according to the given columns and the given range.
void	sort(cern.colt.Swapper swapper, boolean ascending, int... columns) Sorts the dataset according to the given columns.
void	sort(cern.colt.Swapper swapper, int from, int to, boolean ascending, int... columns) Sorts the dataset according to the given columns and the given range.
void	swap(int row1, int row2) Swaps both rows.

Methods inherited from class java.lang.Object

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

Field Detail

columnToDataType

protected DataType<?>[] columnToDataType

The data types.

definition

protected DataDefinition definition

The data definition.

header

protected java.lang.String[] header

The header.

headerMap

protected com.carrotsearch.hppc.ObjectIntOpenHashMap<java.lang.String> headerMap

The header.

node

protected ARXLattice.ARXNode node

The node.

registry

protected org.deidentifier.arx.DataRegistry registry

The current registry.

subset

protected DataHandle subset

The current research subset.

Constructor Detail

DataHandle

public DataHandle()

Method Detail

getAttributeName

public abstract java.lang.String getAttributeName(int col)

Returns the name of the specified column.

Parameters:

col - The column index

Returns:

the attribute name

getColumnIndexOf

public int getColumnIndexOf(java.lang.String attribute)

Returns the index of the given attribute, -1 if it is not in the header.

Parameters:

attribute - the attribute

Returns:

the column index of

getDataType

public DataType<?> getDataType(java.lang.String attribute)

Returns the according data type.

Parameters:

attribute - the attribute

Returns:

the data type

getDate

public java.util.Date getDate(int row,
                              int col)
                       throws java.text.ParseException

Returns a date/time value from the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the date

Throws:

java.text.ParseException - the parse exception

getDefinition

public DataDefinition getDefinition()

Returns the data definition.

Returns:

the definition

getDistinctValues

public final java.lang.String[] getDistinctValues(int column)

Returns an array containing the distinct values in the given column.

Parameters:

column - The column to process

Returns:

the distinct values

getDouble

public java.lang.Double getDouble(int row,
                                  int col)
                           throws java.text.ParseException

Returns a double value from the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the double

Throws:

java.text.ParseException - the parse exception

getFloat

public java.lang.Float getFloat(int row,
                                int col)
                         throws java.text.ParseException

Returns a float value from the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the float

Throws:

java.text.ParseException - the parse exception

getGeneralization

public abstract int getGeneralization(java.lang.String attribute)

Returns the generalization level for the attribute.

Parameters:

attribute - the attribute

Returns:

the generalization

getInt

public java.lang.Integer getInt(int row,
                                int col)
                         throws java.text.ParseException

Returns an int value from the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the int

Throws:

java.text.ParseException - the parse exception

getLong

public java.lang.Long getLong(int row,
                              int col)
                       throws java.text.ParseException

Returns a long value from the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the long

Throws:

java.text.ParseException - the parse exception

getMatchingDataTypes

public java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column)

Returns a mapping from data types to the relative number of values that conform to the according type. This method uses the default locale. This method only returns types that match at least 80% of all values in the column .

Parameters:

column - the column

Returns:

the matching data types

getMatchingDataTypes

public <U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                                 java.lang.Class<U> clazz)

Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class. This method uses the default locale. This method only returns types that match at least 80% of all values in the column .

Type Parameters:

U - the generic type

Parameters:

column - the column

clazz - The wrapped class

Returns:

the matching data types

getMatchingDataTypes

public <U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                                 java.lang.Class<U> clazz,
                                                                                                                 double threshold)

Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class. This method uses the default locale.

Type Parameters:

U - the generic type

Parameters:

column - the column

clazz - The wrapped class

threshold - Relative minimal number of values that must match to include a data type in the results

Returns:

the matching data types

getMatchingDataTypes

public <U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                                 java.lang.Class<U> clazz,
                                                                                                                 java.util.Locale locale)

Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class. This method only returns types that match at least 80% of all values in the column .

Type Parameters:

U - the generic type

Parameters:

column - the column

clazz - The wrapped class

locale - The locale to use

Returns:

the matching data types

getMatchingDataTypes

public <U> java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                                 java.lang.Class<U> clazz,
                                                                                                                 java.util.Locale locale,
                                                                                                                 double threshold)

Returns a mapping from data types to the relative number of values that conform to the according type for a given wrapped class.

Type Parameters:

U - the generic type

Parameters:

column - the column

clazz - The wrapped class

locale - The locale to use

threshold - Relative minimal number of values that must match to include a data type in the results

Returns:

the matching data types

getMatchingDataTypes

public java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                             double threshold)

Returns a mapping from data types to the relative number of values that conform to the according type. This method uses the default locale.

Parameters:

column - the column

threshold - Relative minimal number of values that must match to include a data type in the results

Returns:

the matching data types

getMatchingDataTypes

public java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                             java.util.Locale locale)

Returns a mapping from data types to the relative number of values that conform to the according type This method only returns types that match at least 80% of all values in the column .

Parameters:

column - the column

locale - The locale to use

Returns:

the matching data types

getMatchingDataTypes

public java.util.List<org.apache.commons.math3.util.Pair<DataType<?>,java.lang.Double>> getMatchingDataTypes(int column,
                                                                                                             java.util.Locale locale,
                                                                                                             double threshold)

Returns a mapping from data types to the relative number of values that conform to the according type.

Parameters:

column - the column

locale - The locale to use

threshold - Relative minimal number of values that must match to include a data type in the results

Returns:

the matching data types

getNonConformingValues

public java.lang.String[] getNonConformingValues(int column,
                                                 DataType<?> type,
                                                 int max)

Returns a set of values that do not conform to the given data type.

Parameters:

column - The column to test

type - The type to test

max - The maximal number of values returned by this method

Returns:

the non conforming values

getNumColumns

public abstract int getNumColumns()

Returns the number of columns in the dataset.

Returns:

the num columns

getNumConformingValues

public int getNumConformingValues(int column,
                                  DataType<?> type)

Returns the number of (distinct) values that conform to the given data type.

Parameters:

column - The column to test

type - The type to test

Returns:

the num conforming values

getNumRows

public abstract int getNumRows()

Returns the number of rows in the dataset.

Returns:

the num rows

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator()

Returns a risk estimator, using the US population if required

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model)

Returns a risk estimator

Parameters:

model -

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model,
                                            ARXSolverConfiguration config)

Returns a risk estimator

Parameters:

model -

config -

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model,
                                            RiskModelHistogram classes)

Returns a risk estimator for the given set of equivalence classes. Saves resources by re-using existing classes

Parameters:

model -

classes -

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model,
                                            RiskModelHistogram classes,
                                            ARXSolverConfiguration config)

Returns a risk estimator for the given set of equivalence classes. Saves resources by re-using existing classes

Parameters:

model -

classes -

config -

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model,
                                            java.util.Set<java.lang.String> qis)

Returns a risk estimator for the given set of quasi-identifiers

Parameters:

model -

qis -

Returns:

getRiskEstimator

public RiskEstimateBuilder getRiskEstimator(ARXPopulationModel model,
                                            java.util.Set<java.lang.String> qis,
                                            ARXSolverConfiguration config)

Returns a risk estimator for the given set of quasi-identifiers

Parameters:

model -

qis -

config -

Returns:

getStatistics

public abstract StatisticsBuilder getStatistics()

Returns an object providing access to basic descriptive statistics about the data represented by this handle.

Returns:

the statistics

getTransformation

public ARXLattice.ARXNode getTransformation()

Returns the transformation .

Returns:

the transformation

getValue

public abstract java.lang.String getValue(int row,
                                          int col)

Returns the value in the specified cell.

Parameters:

row - The cell's row index

col - The cell's column index

Returns:

the value

getView

public DataHandle getView()

Returns a new data handle that represents a context specific view on the dataset.

Returns:

the view

isOptimized

public boolean isOptimized()

Has this handle been optimized with local recoding?

Returns:

isOutlier

public boolean isOutlier(int row)

Determines whether a given row is an outlier in the currently associated data transformation.

Parameters:

row - the row

Returns:

true, if is outlier

isReleased

public boolean isReleased()

Determines whether this handle is orphaned, i.e., should not be used anymore

Returns:

true, if this handle has been released

isSuppressed

public boolean isSuppressed(int row)

Determines whether a given row is completely suppressed

Parameters:

row - the row

Returns:

true, if is suppressed

iterator

public abstract java.util.Iterator<java.lang.String[]> iterator()

Returns an iterator over the data.

Returns:

the iterator

release

public void release()

Releases this handle and all associated resources. If a input handle is released all associated results are released as well.

render

public ElementData render()

Renders this object

Returns:

replace

public boolean replace(int column,
                       java.lang.String original,
                       java.lang.String replacement)

Replaces the original value with the replacement in the given column. Only supported by handles for input data.

Parameters:

column - the column

original - the original

replacement - the replacement

Returns:

Whether the original value was found

save

public void save(java.io.File file)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

file - the file

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.io.File file,
                 char separator)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

file - A file

separator - The utilized separator character

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.io.File file,
                 CSVSyntax config)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

file - the file

config - the config

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.io.OutputStream out)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

out - the out

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.io.OutputStream out,
                 char separator)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

out - Output stream

separator - The utilized separator character

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.io.OutputStream out,
                 CSVSyntax config)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

out - the out

config - the config

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.lang.String path)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

path - the path

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.lang.String path,
                 char separator)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

path - A path

separator - The utilized separator character

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

save

public void save(java.lang.String path,
                 CSVSyntax config)
          throws java.io.IOException

Writes the data to a CSV file.

Parameters:

path - the path

config - the config

Throws:

java.io.IOException - Signals that an I/O exception has occurred.

sort

public void sort(boolean ascending,
                 int... columns)

Sorts the dataset according to the given columns. Will sort input and output analogously.

Parameters:

ascending - Sort ascending or descending

columns - An integer array containing column indicides

sort

public void sort(int from,
                 int to,
                 boolean ascending,
                 int... columns)

Sorts the dataset according to the given columns and the given range. Will sort input and output analogously.

Parameters:

from - The lower bound

to - The upper bound

ascending - Sort ascending or descending

columns - An integer array containing column indicides

sort

public void sort(cern.colt.Swapper swapper,
                 boolean ascending,
                 int... columns)

Sorts the dataset according to the given columns. Will sort input and output analogously.

Parameters:

swapper - A swapper

ascending - Sort ascending or descending

columns - An integer array containing column indicides

sort

public void sort(cern.colt.Swapper swapper,
                 int from,
                 int to,
                 boolean ascending,
                 int... columns)

Sorts the dataset according to the given columns and the given range. Will sort input and output analogously.

Parameters:

swapper - A swapper

from - The lower bound

to - The upper bound

ascending - Sort ascending or descending

columns - An integer array containing column indicides

swap

public void swap(int row1,
                 int row2)

Swaps both rows.

Parameters:

row1 - the row1

row2 - the row2

checkColumn

protected void checkColumn(int column1)

Checks a column index.

Parameters:

column1 - the column1

checkColumns

protected void checkColumns(int[] columns)

Checks the column indexes.

Parameters:

columns - the columns

checkReleased

protected void checkReleased()

Checks whether a registry is referenced.

checkRow

protected void checkRow(int row1,
                        int length)

Checks a row index.

Parameters:

row1 - the row1

length - the length

doRelease

protected abstract void doRelease()

Releases all resources.

getBaseDataType

protected DataType<?> getBaseDataType(java.lang.String attribute)

Returns the base data type without generalization.

Parameters:

attribute - the attribute

Returns:

the base data type

getColumnToDataType

protected abstract DataType<?>[] getColumnToDataType()

Generates an array of data types.

Returns:

the data type array

getConfiguration

protected abstract ARXConfiguration getConfiguration()

Returns the ARXConfiguration that is currently being used, null if this is an input handle

Returns:

getDistinctValues

protected abstract java.lang.String[] getDistinctValues(int column,
                                                        boolean ignoreSuppression,
                                                        DataHandleInternal.InterruptHandler handler)

Returns the distinct values.

Parameters:

column - the column

ignoreSuppression -

handler - the handler

Returns:

the distinct values

getRegistry

protected org.deidentifier.arx.DataRegistry getRegistry()

Returns the registry associated with this handle.

Returns:

the registry

getValueIdentifier

protected abstract int getValueIdentifier(int column,
                                          java.lang.String value)

Returns the internal value identifier

Parameters:

column -

value -

Returns:

internalCompare

protected int internalCompare(int row1,
                              int row2,
                              int[] columns,
                              boolean ascending)

A negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second. It uses the specified data types for comparison. If no datatype is specified for a specific column it uses string comparison.

Parameters:

row1 - the row1

row2 - the row2

columns - the columns

ascending - the ascending

Returns:

the int

internalGetEncodedValue

protected abstract int internalGetEncodedValue(int row,
                                               int col,
                                               boolean ignoreSuppression)

Internal representation of get encoded value. Returns -1 for suppressed values.

Parameters:

row - the row

col - the col

Returns:

the value

internalGetValue

protected abstract java.lang.String internalGetValue(int row,
                                                     int col,
                                                     boolean ignoreSuppression)

Internal representation of get value.

Parameters:

row - the row

col - the col

Returns:

the string

internalIsOutlier

protected abstract boolean internalIsOutlier(int row,
                                             int[] columns)

Returns whether this is an outlier regarding the given columns. If no columns have been specified, true will be returned.

Parameters:

row -

columns -

Returns:

internalReplace

protected abstract boolean internalReplace(int column,
                                           java.lang.String original,
                                           java.lang.String replacement)

Internal replacement method.

Parameters:

column - the column

original - the original

replacement - the replacement

Returns:

true, if successful

isAnonymous

protected boolean isAnonymous()

Returns whether the data represented by this handle is anonymous

Returns:

setHeader

protected void setHeader(java.lang.String[] header)

Sets the current header

Parameters:

header -

setRegistry

protected void setRegistry(org.deidentifier.arx.DataRegistry registry)

Updates the registry.

Parameters:

registry - the new registry

setView

protected void setView(DataHandle handle)

Sets the subset.

Parameters:

handle - the new view