Package org.eclipse.mat.internal.collectionextract

Class MapCollectionExtractorBase

java.lang.Object

org.eclipse.mat.internal.collectionextract.MapCollectionExtractorBase

All Implemented Interfaces:

ICollectionExtractor, IMapExtractor

Direct Known Subclasses:

HashedMapCollectionExtractorBase, TreeMapCollectionExtractor

public abstract class MapCollectionExtractorBase
extends Object
implements IMapExtractor

Nested Class Summary

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

IMapExtractor.EntryObject

Constructor Summary

Constructors

Constructor	Description
MapCollectionExtractorBase(String keyField, String valueField)

Method Summary

Modifier and Type	Method	Description
Iterator<Map.Entry<IObject,IObject>>	extractMapEntries(IObject coll)	Extracts the contents of a map (i.e.
Integer	getCapacity(IObject coll)	Return the capacity of the collection, if applicable
boolean	hasCapacity()	Check if the collection has capacity, e.g.

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, getFillRatio, getNumberOfNotNullElements, getSize, hasExtractableArray, hasExtractableContents, hasFillRatio, hasSize

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

getCollisionRatio, hasCollisionRatio

Constructor Details

MapCollectionExtractorBase

public MapCollectionExtractorBase(String keyField,
 String valueField)

Method Details

hasCapacity

public boolean hasCapacity()

Description copied from interface: ICollectionExtractor

Check if the collection has capacity, e.g. ArrayList

Specified by:

hasCapacity in interface ICollectionExtractor

Returns:

true if ICollectionExtractor.getCapacity(IObject) could be called

See Also:

• ICollectionExtractor.getCapacity(IObject)

getCapacity

public Integer getCapacity(IObject coll)
                    throws SnapshotException

Description copied from interface: ICollectionExtractor

Return the capacity of the collection, if applicable

Specified by:

getCapacity in interface ICollectionExtractor

Parameters:

coll - - the collection to find the capacity of

Returns:

the capacity in bytes, or null if unavailable

Throws:

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

See Also:

• ICollectionExtractor.hasCapacity()

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