Package org.eclipse.mat.internal.collectionextract

Class KeySetCollectionExtractor

java.lang.Object

org.eclipse.mat.internal.collectionextract.WrapperCollectionExtractor

org.eclipse.mat.internal.collectionextract.WrapperMapExtractor

org.eclipse.mat.internal.collectionextract.KeySetCollectionExtractor

All Implemented Interfaces:

ICollectionExtractor, IMapExtractor

public class KeySetCollectionExtractor
extends WrapperMapExtractor

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.mat.inspections.collectionextract.IMapExtractor

IMapExtractor.EntryObject

Constructor Summary

Constructors

Constructor	Description
KeySetCollectionExtractor(String field)
KeySetCollectionExtractor(String field, ICollectionExtractor extractor)

Method Summary

Modifier and Type	Method	Description
IObjectArray	extractEntries(IObject coll)	Extracts the array containing the collection content
int[]	extractEntryIds(IObject coll)	Returns the object ids (int) for all objects which are contained in the collection
boolean	hasExtractableArray()	Return true if the collection array based and the array can be extracted from the heap dump

Methods inherited from class org.eclipse.mat.internal.collectionextract.WrapperMapExtractor

extractMapEntries, getCollisionRatio, hasCollisionRatio

Methods inherited from class org.eclipse.mat.internal.collectionextract.WrapperCollectionExtractor

getCapacity, getFillRatio, getNumberOfNotNullElements, getSize, hasCapacity, hasExtractableContents, hasFillRatio, hasSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.mat.inspections.collectionextract.ICollectionExtractor

getCapacity, getFillRatio, getNumberOfNotNullElements, getSize, hasCapacity, hasExtractableContents, hasFillRatio, hasSize

Constructor Details

KeySetCollectionExtractor

public KeySetCollectionExtractor(String field)

KeySetCollectionExtractor

public KeySetCollectionExtractor(String field,
 ICollectionExtractor extractor)

Method Details

extractEntryIds

public int[] extractEntryIds(IObject coll)
                      throws SnapshotException

Description copied from interface: ICollectionExtractor

Returns the object ids (int) for all objects which are contained in the collection

Specified by:

extractEntryIds in interface ICollectionExtractor

Overrides:

extractEntryIds in class WrapperCollectionExtractor

Parameters:

coll - - the collection to find the objects it holds

Returns:

an array of ints which are the object ids.

Throws:

SnapshotException - if there is a problem retrieving data from the snapshot

See Also:

• ICollectionExtractor.hasExtractableContents()

hasExtractableArray

public boolean hasExtractableArray()

Description copied from interface: ICollectionExtractor

Return true if the collection array based and the array can be extracted from the heap dump

Specified by:

hasExtractableArray in interface ICollectionExtractor

Overrides:

hasExtractableArray in class WrapperCollectionExtractor

Returns:

true if ICollectionExtractor.extractEntries(IObject) could be called

See Also:

• ICollectionExtractor.extractEntries(IObject)

extractEntries

public IObjectArray extractEntries(IObject coll)
                            throws SnapshotException

Description copied from interface: ICollectionExtractor

Extracts the array containing the collection content

Specified by:

extractEntries in interface ICollectionExtractor

Overrides:

extractEntries in class WrapperCollectionExtractor

Parameters:

coll - - the collection to find the object array holding its contents

Returns:

the backing array for the collection

Throws:

SnapshotException - if there is a problem retrieving data from the snapshot

See Also:

• ICollectionExtractor.hasExtractableArray()