Module datarush.analytics

Package com.pervasive.datarush.analytics.cleansing

Class ReplaceSpecification

java.lang.Object

com.pervasive.datarush.analytics.cleansing.ReplaceSpecification

All Implemented Interfaces:

Serializable

public final class ReplaceSpecification
extends Object
implements Serializable

Specify per field or per group of fields how missing (null) values should be handled. An action must be specified that defines how missing values are handled. A field name can be specified or a group of fields by type. A replacement value can be given if the action is to replace missing values with a constant value.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ReplaceSpecification.Action	The action to take when a missing value is discovered within a field.

Constructor Summary

Constructors

Constructor	Description
ReplaceSpecification()	Default public constructor.

Method Summary

Modifier and Type	Method	Description
static ReplaceSpecification	constant(ScalarTokenType type, String value)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_CONSTANT action for fields with the specified type.
static ReplaceSpecification	constant(String fieldName, String value)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_CONSTANT action for the specified field.
static ReplaceSpecification	freq(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MOST_FREQ action for fields with the specified type.
static ReplaceSpecification	freq(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MOST_FREQ action for the specified field.
ReplaceSpecification.Action	getAction()	Get the replacement action value.
String	getFieldName()	Get the field name.
ScalarTokenType	getFieldType()	Get the field type.
String	getReplacementValue()	Get the constant replacement value.
static ReplaceSpecification	max(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MAX action for fields with the specified type.
static ReplaceSpecification	max(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MAX action for the specified field.
static ReplaceSpecification	mean(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEAN action for fields with the specified type.
static ReplaceSpecification	mean(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEAN action for the specified field.
static ReplaceSpecification	median(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEDIAN action for fields with the specified type.
static ReplaceSpecification	median(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEDIAN action for the specified field.
static ReplaceSpecification	min(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MIN action for fields with the specified type.
static ReplaceSpecification	min(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MIN action for the specified field.
static ReplaceSpecification	none(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.NONE action for fields with the specified type.
static ReplaceSpecification	none(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.NONE action for the specified field.
void	setAction(ReplaceSpecification.Action action)	Set the replacement ReplaceSpecification.Action.
void	setFieldName(String fieldName)	Set the field name to apply the replacement action.
void	setFieldType(ScalarTokenType fieldType)	Set the field (token) type.
void	setReplacementValue(String replacementValue)	Set the replacement value.
static ReplaceSpecification	skip(ScalarTokenType type)	Create a replacement specification with the ReplaceSpecification.Action.SKIP_RECORD action for fields with the specified type.
static ReplaceSpecification	skip(String fieldName)	Create a replacement specification with the ReplaceSpecification.Action.SKIP_RECORD action for the specified field.

Methods inherited from class java.lang.Object

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

Constructor Details

ReplaceSpecification

public ReplaceSpecification()

Default public constructor.

Method Details

none

public static ReplaceSpecification none(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.NONE action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the NONE action

none

public static ReplaceSpecification none(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.NONE action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the NONE action

skip

public static ReplaceSpecification skip(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.SKIP_RECORD action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the SKIP_RECORD action

skip

public static ReplaceSpecification skip(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.SKIP_RECORD action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the SKIP_RECORD action

constant

public static ReplaceSpecification constant(String fieldName,
 String value)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_CONSTANT action for the specified field.

Parameters:

fieldName - apply the action to this field

value - replacement value

Returns:

specification with the REPLACE_CONSTANT action

constant

public static ReplaceSpecification constant(ScalarTokenType type,
 String value)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_CONSTANT action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

value - replacement value

Returns:

specification with the REPLACE_CONSTANT action

min

public static ReplaceSpecification min(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MIN action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the REPLACE_MIN action

min

public static ReplaceSpecification min(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MIN action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the REPLACE_MIN action

max

public static ReplaceSpecification max(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MAX action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the REPLACE_MAX action

max

public static ReplaceSpecification max(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MAX action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the REPLACE_MAX action

median

public static ReplaceSpecification median(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEDIAN action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the REPLACE_MEDIAN action

median

public static ReplaceSpecification median(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEDIAN action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the REPLACE_MEDIAN action

mean

public static ReplaceSpecification mean(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEAN action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the REPLACE_MEAN action

mean

public static ReplaceSpecification mean(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MEAN action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the REPLACE_MEAN action

freq

public static ReplaceSpecification freq(String fieldName)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MOST_FREQ action for the specified field.

Parameters:

fieldName - apply the action to this field

Returns:

specification with the REPLACE_MOST_FREQ action

freq

public static ReplaceSpecification freq(ScalarTokenType type)

Create a replacement specification with the ReplaceSpecification.Action.REPLACE_MOST_FREQ action for fields with the specified type.

Parameters:

type - apply the action to all fields of this type

Returns:

specification with the REPLACE_MOST_FREQ action

getAction

public ReplaceSpecification.Action getAction()

Get the replacement action value.

Returns:

the action

setAction

public void setAction(ReplaceSpecification.Action action)

Set the replacement ReplaceSpecification.Action.

Parameters:

action - the action to set

getFieldName

public String getFieldName()

Get the field name.

Returns:

the fieldName

setFieldName

public void setFieldName(String fieldName)

Set the field name to apply the replacement action.

Parameters:

fieldName - the fieldName to set

getFieldType

public ScalarTokenType getFieldType()

Get the field type.

Returns:

the fieldType

setFieldType

public void setFieldType(ScalarTokenType fieldType)

Set the field (token) type. All fields of this type in the input will have this missing value replacement applied to them.

Parameters:

fieldType - the fieldType to set

getReplacementValue

public String getReplacementValue()

Get the constant replacement value.

Returns:

the replacementValue

setReplacementValue

public void setReplacementValue(String replacementValue)

Set the replacement value. Only applicable if the action is set to ReplaceSpecification.Action.REPLACE_CONSTANT, ignored otherwise.

Parameters:

replacementValue - the replacementValue to set