org.eclipse.mat.internal.collectionextract

Class WrapperMapExtractor

java.lang.Object

org.eclipse.mat.internal.collectionextract.WrapperCollectionExtractor

org.eclipse.mat.internal.collectionextract.WrapperMapExtractor

All Implemented Interfaces:

ICollectionExtractor, IMapExtractor

Direct Known Subclasses:

KeySetCollectionExtractor, WrapperFieldMapExtractor

public class WrapperMapExtractor
extends WrapperCollectionExtractor
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
WrapperMapExtractor(String field)
WrapperMapExtractor(String field, ICollectionExtractor extractor)

Method Summary

Modifier and Type	Method and Description
Iterator<Map.Entry<IObject,IObject>>	extractMapEntries(IObject coll) Extracts the contents of a map (i.e.
Double	getCollisionRatio(IObject coll) Calculates the collision ratio in the collection
boolean	hasCollisionRatio() Check if the extractor can calculate collision ratio

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

extractEntries, extractEntryIds, getCapacity, getFillRatio, getNumberOfNotNullElements, getSize, hasCapacity, hasExtractableArray, 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

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

Constructor Detail

WrapperMapExtractor

public WrapperMapExtractor(String field)

WrapperMapExtractor

public WrapperMapExtractor(String field,
                           ICollectionExtractor extractor)

Method Detail

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 coll)
                         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 coll)

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:

coll - - 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