Class HashedMapCollectionExtractorBase
- java.lang.Object
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- org.eclipse.mat.internal.collectionextract.MapCollectionExtractorBase
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- org.eclipse.mat.internal.collectionextract.HashedMapCollectionExtractorBase
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- All Implemented Interfaces:
ICollectionExtractor,IMapExtractor
- Direct Known Subclasses:
ConcurrentHashMapCollectionExtractor,ConcurrentSkipListCollectionExtractor,HashMapCollectionExtractor
public abstract class HashedMapCollectionExtractorBase extends MapCollectionExtractorBase
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.eclipse.mat.inspections.collectionextract.IMapExtractor
IMapExtractor.EntryObject
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Constructor Summary
Constructors Constructor Description HashedMapCollectionExtractorBase(java.lang.String arrayField, java.lang.String keyField, java.lang.String valueField)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.DoublegetCollisionRatio(IObject coll)Calculates the collision ratio in the collection.java.lang.DoublegetFillRatio(IObject coll)Calculate the fill ratio of a collectionbooleanhasCollisionRatio()Check if the extractor can calculate collision ratiobooleanhasFillRatio()Check if fill ratio for the collection can be calculated, i.e.-
Methods inherited from class org.eclipse.mat.internal.collectionextract.MapCollectionExtractorBase
extractMapEntries, getCapacity, hasCapacity
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Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.eclipse.mat.inspections.collectionextract.ICollectionExtractor
extractEntries, extractEntryIds, getNumberOfNotNullElements, getSize, hasExtractableArray, hasExtractableContents, hasSize
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Method Detail
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hasFillRatio
public boolean hasFillRatio()
Description copied from interface:ICollectionExtractorCheck if fill ratio for the collection can be calculated, i.e. if it has some predefined capacity and actual size.- Returns:
- true if
ICollectionExtractor.getFillRatio(IObject)could be called - See Also:
ICollectionExtractor.getFillRatio(IObject)
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getFillRatio
public java.lang.Double getFillRatio(IObject coll) throws SnapshotException
Description copied from interface:ICollectionExtractorCalculate the fill ratio of a collection- Parameters:
coll- - the collection to find the fill ratio of- Returns:
- the fill ratio, between 0.0 and 1.0, or null if unavailable
- Throws:
SnapshotException- if there is a problem retrieving data from the snapshot- See Also:
ICollectionExtractor.hasFillRatio()
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hasCollisionRatio
public boolean hasCollisionRatio()
Description copied from interface:IMapExtractorCheck if the extractor can calculate collision ratio- Returns:
- true if @
IMapExtractor.getCollisionRatio(IObject)could be called - See Also:
IMapExtractor.getCollisionRatio(IObject)
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getCollisionRatio
public java.lang.Double getCollisionRatio(IObject coll) throws SnapshotException
Description copied from interface:IMapExtractorCalculates the collision ratio in the collection. Could be an estimate.- Parameters:
coll- - the collection to calculate the collision ratio of- Returns:
- Double number of elements with colliding keys / size
- Throws:
SnapshotException- See Also:
IMapExtractor.hasCollisionRatio()
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