Class ExtractedMap
- java.lang.Object
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- org.eclipse.mat.inspections.collectionextract.AbstractExtractedCollection<Map.Entry<IObject,IObject>,IMapExtractor>
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- org.eclipse.mat.inspections.collectionextract.ExtractedMap
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public class ExtractedMap extends AbstractExtractedCollection<Map.Entry<IObject,IObject>,IMapExtractor>
An abstract class representing a map extracted from the heap. It provides convenience methods for querying certain properties of the collection (e.g. size) and for extracting the elements of the collection- Since:
- 1.5
- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.eclipse.mat.snapshot.model.IObject
IObject.Type
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Constructor Summary
Constructors Constructor Description ExtractedMap(IObject coll, IMapExtractor extractor)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description IObject
getByKeyIdentity(IObject key)
Gets an object from the Map, searching by the key.Double
getCollisionRatio()
Get the ratio of collisions inside the map.boolean
hasCollisionRatio()
Check if collision ratio can be calculated for the map.Iterator<Map.Entry<IObject,IObject>>
iterator()
The entries of the map.-
Methods inherited from class org.eclipse.mat.inspections.collectionextract.AbstractExtractedCollection
extractEntries, extractEntryIds, getCapacity, getClassSpecificName, getClazz, getDisplayName, getFillRatio, getGCRootInfo, getObjectAddress, getObjectId, getOutboundReferences, getRetainedHeapSize, getSnapshot, getTechnicalName, getUsedHeapSize, hasCapacity, hasExtractableArray, hasExtractableContents, hasFillRatio, hasSize, isEmpty, resolveValue, size, toString
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Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Constructor Detail
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ExtractedMap
public ExtractedMap(IObject coll, IMapExtractor extractor)
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Method Detail
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hasCollisionRatio
public boolean hasCollisionRatio()
Check if collision ratio can be calculated for the map.- Returns:
- true if @
getCollisionRatio()
could be called - See Also:
getCollisionRatio()
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getCollisionRatio
public Double getCollisionRatio() throws SnapshotException
Get the ratio of collisions inside the map.- Returns:
- the collision ratio as a
Double
between 0.0 and 1.0 inclusive, or possibly null - Throws:
SnapshotException
- if there is a problem retrieving data from the snapshot- See Also:
hasCollisionRatio()
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getByKeyIdentity
public IObject getByKeyIdentity(IObject key) throws SnapshotException
Gets an object from the Map, searching by the key. The keys are matched by IDENTITY, so cannot be used to compare for example Strings- Parameters:
key
-- Returns:
- the value object, assuming a match by key identity
- Throws:
SnapshotException
- if there is a problem retrieving data from the snapshot
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