org.eclipse.mat.internal.collectionextract

Class RegularEnumSetExtractor

java.lang.Object

org.eclipse.mat.internal.collectionextract.FieldArrayCollectionExtractor

org.eclipse.mat.internal.collectionextract.FieldSizeArrayCollectionExtractor

org.eclipse.mat.internal.collectionextract.RegularEnumSetExtractor

All Implemented Interfaces:

ICollectionExtractor, IMapExtractor

public class RegularEnumSetExtractor
extends FieldSizeArrayCollectionExtractor
implements IMapExtractor

Nested Class Summary

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

IMapExtractor.EntryObject

Constructor Summary

Constructors

Constructor and Description
RegularEnumSetExtractor(String sizeField, String arrayField) For java.util.RegularEnumSet

Method Summary

Modifier and Type	Method and Description
int[]	extractEntryIds(IObject coll) Returns the object ids (int) for all objects which are contained in the collection
Iterator<Map.Entry<IObject,IObject>>	extractMapEntries(IObject collection) Extracts the contents of a map (i.e.
Double	getCollisionRatio(IObject collection) Calculates the collision ratio in the collection
Integer	getSize(IObject coll) Extract the size of the collection
boolean	hasCollisionRatio() Check if the extractor can calculate collision ratio

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

hasSize

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

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

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

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

Constructor Detail

RegularEnumSetExtractor

public RegularEnumSetExtractor(String sizeField,
                               String arrayField)

For java.util.RegularEnumSet

Parameters:

sizeField - - holds the bits indicating which set items are used

arrayField - - all the enum values

Method Detail

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 FieldSizeArrayCollectionExtractor

Returns:

Throws:

SnapshotException

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 FieldArrayCollectionExtractor

Returns:

Throws:

SnapshotException

hasCollisionRatio

public boolean hasCollisionRatio()

Description copied from interface: IMapExtractor

Check if the extractor can calculate collision ratio

Specified by:

hasCollisionRatio in interface IMapExtractor

Returns:

getCollisionRatio

public Double getCollisionRatio(IObject collection)
                         throws SnapshotException

Description copied from interface: IMapExtractor

Calculates the collision ratio in the collection

Specified by:

getCollisionRatio in interface IMapExtractor

Returns:

Double number of elements with colliding keys / size

Throws:

SnapshotException

extractMapEntries

public Iterator<Map.Entry<IObject,IObject>> extractMapEntries(IObject collection)
                                                       throws SnapshotException

Description copied from interface: IMapExtractor

Extracts the contents of a map (i.e. an IObject representing a Map) and provides an Iterator over them

Specified by:

extractMapEntries in interface IMapExtractor

Parameters:

collection - - the map to extract contents from

Returns:

an Iterator over the entries. If the original Map had an Entry object, the content of the iterator would usually be EntryObject

Throws:

SnapshotException