Package org.eclipse.mat.snapshot.query

Class RetainedSizeDerivedData

java.lang.Object

org.eclipse.mat.query.ContextDerivedData

org.eclipse.mat.snapshot.query.RetainedSizeDerivedData

public class RetainedSizeDerivedData
extends ContextDerivedData

Extract retained size information. Used for quantization.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.mat.query.ContextDerivedData

ContextDerivedData.DerivedCalculator, ContextDerivedData.DerivedColumn, ContextDerivedData.DerivedOperation

Field Summary

Fields

Modifier and Type	Field	Description
static final ContextDerivedData.DerivedOperation	APPROXIMATE	Indicates approximate retained size.
static final ContextDerivedData.DerivedOperation	PRECISE	Indicates exact retained size.

Constructor Summary

Constructors

Constructor	Description
RetainedSizeDerivedData(ISnapshot snaphot)	Initial constructor.

Method Summary

Modifier and Type	Method	Description
Column	columnFor(ContextDerivedData.DerivedColumn derivedColumn, IResult result, ContextProvider provider)	Get a column for the retained size with the right calculator.
ContextDerivedData.DerivedColumn[]	getDerivedColumns()	Get the extra column with the retained size data.
String	labelFor(ContextDerivedData.DerivedColumn derivedColumn, ContextProvider provider)	Get the label for the extra column.

Methods inherited from class org.eclipse.mat.query.ContextDerivedData

lookup

Methods inherited from class java.lang.Object

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

Field Details

APPROXIMATE

public static final ContextDerivedData.DerivedOperation APPROXIMATE

Indicates approximate retained size. Sum of retained sizes of each object.

PRECISE

public static final ContextDerivedData.DerivedOperation PRECISE

Indicates exact retained size. Shallow size of retained set of the objects.

Constructor Details

RetainedSizeDerivedData

public RetainedSizeDerivedData(ISnapshot snaphot)

Initial constructor.

Parameters:

snaphot -

Method Details

getDerivedColumns

public ContextDerivedData.DerivedColumn[] getDerivedColumns()

Get the extra column with the retained size data.

Specified by:

getDerivedColumns in class ContextDerivedData

Returns:

an array of columns

labelFor

public String labelFor(ContextDerivedData.DerivedColumn derivedColumn,
 ContextProvider provider)

Get the label for the extra column. Based on the column name plus information from the provider as to name of the set of objects.

Specified by:

labelFor in class ContextDerivedData

Parameters:

derivedColumn - the extra column

provider - how the column was generated

Returns:

the label

columnFor

public Column columnFor(ContextDerivedData.DerivedColumn derivedColumn,
 IResult result,
 ContextProvider provider)

Get a column for the retained size with the right calculator.

Specified by:

columnFor in class ContextDerivedData

Parameters:

derivedColumn - the extra column

result - the original result to be enhanced

provider - the provider of all the data

Returns:

the column