Package org.eclipse.mat.internal.collectionextract

Class LinkedListCollectionExtractor

java.lang.Object

org.eclipse.mat.internal.collectionextract.FieldSizedCollectionExtractor

org.eclipse.mat.internal.collectionextract.LinkedListCollectionExtractor

All Implemented Interfaces:

ICollectionExtractor

public class LinkedListCollectionExtractor
extends FieldSizedCollectionExtractor

Constructor Summary

Constructors

Constructor	Description
LinkedListCollectionExtractor(String sizeField, String leadField)

Method Summary

Modifier and Type	Method	Description
int[]	extractEntryIds(IObject list)	Returns the object ids (int) for all objects which are contained in the collection
Integer	getSize(IObject coll)	Extract the size of the collection.
boolean	hasExtractableContents()	Check if the collection has extractable contents
boolean	hasSize()	Check if the size of the collection can be extracted.

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

extractEntries, getCapacity, getFillRatio, getNumberOfNotNullElements, hasCapacity, hasExtractableArray, hasFillRatio

Methods inherited from class java.lang.Object

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

Constructor Details

LinkedListCollectionExtractor

public LinkedListCollectionExtractor(String sizeField,
 String leadField)

Method Details

hasExtractableContents

public boolean hasExtractableContents()

Description copied from interface: ICollectionExtractor

Check if the collection has extractable contents

Specified by:

hasExtractableContents in interface ICollectionExtractor

Overrides:

hasExtractableContents in class FieldSizedCollectionExtractor

Returns:

true if ICollectionExtractor.extractEntryIds(IObject) could be called

See Also:

• ICollectionExtractor.extractEntryIds(IObject)

extractEntryIds

public int[] extractEntryIds(IObject list)
                      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 FieldSizedCollectionExtractor

Parameters:

list - - 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()

hasSize

public boolean hasSize()

Description copied from interface: ICollectionExtractor

Check if the size of the collection can be extracted.

Specified by:

hasSize in interface ICollectionExtractor

Overrides:

hasSize in class FieldSizedCollectionExtractor

Returns:

true if ICollectionExtractor.getSize(IObject) could be called

See Also:

• ICollectionExtractor.getSize(IObject)

getSize

public Integer getSize(IObject coll)
                throws SnapshotException

Description copied from interface: ICollectionExtractor

Extract the size of the collection.

Specified by:

getSize in interface ICollectionExtractor

Overrides:

getSize in class FieldSizedCollectionExtractor

Parameters:

coll - - the collection to find the size of

Returns:

the size, or null if not available

Throws:

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

See Also:

• ICollectionExtractor.hasSize()