Class RegularEnumSetExtractor
- java.lang.Object
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- org.eclipse.mat.internal.collectionextract.FieldArrayCollectionExtractor
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- org.eclipse.mat.internal.collectionextract.FieldSizeArrayCollectionExtractor
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- org.eclipse.mat.internal.collectionextract.RegularEnumSetExtractor
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- All Implemented Interfaces:
ICollectionExtractor,IMapExtractor
public class RegularEnumSetExtractor extends FieldSizeArrayCollectionExtractor implements IMapExtractor
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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 RegularEnumSetExtractor(java.lang.String sizeField, java.lang.String arrayField)For java.util.RegularEnumSet
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int[]extractEntryIds(IObject coll)Returns the object ids (int) for all objects which are contained in the collectionjava.util.Iterator<java.util.Map.Entry<IObject,IObject>>extractMapEntries(IObject collection)Extracts the contents of a map (i.e.java.lang.DoublegetCollisionRatio(IObject collection)Calculates the collision ratio in the collection.java.lang.IntegergetSize(IObject coll)Extract the size of the collection.booleanhasCollisionRatio()Check if the extractor can calculate collision ratio-
Methods inherited from class org.eclipse.mat.internal.collectionextract.FieldSizeArrayCollectionExtractor
hasSize
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Methods inherited from class org.eclipse.mat.internal.collectionextract.FieldArrayCollectionExtractor
extractEntries, getCapacity, getFillRatio, getNumberOfNotNullElements, hasCapacity, hasExtractableArray, hasExtractableContents, hasFillRatio
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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, getCapacity, getFillRatio, getNumberOfNotNullElements, hasCapacity, hasExtractableArray, hasExtractableContents, hasFillRatio, hasSize
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Method Detail
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getSize
public java.lang.Integer getSize(IObject coll) throws SnapshotException
Description copied from interface:ICollectionExtractorExtract the size of the collection.- Specified by:
getSizein interfaceICollectionExtractor- Overrides:
getSizein classFieldSizeArrayCollectionExtractor- Parameters:
coll- - the collection to find the size of- Returns:
- the size, or null if not available
- Throws:
SnapshotException- if there is a problem retrieving data from the snapshot- See Also:
ICollectionExtractor.hasSize()
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extractEntryIds
public int[] extractEntryIds(IObject coll) throws SnapshotException
Description copied from interface:ICollectionExtractorReturns the object ids (int) for all objects which are contained in the collection- Specified by:
extractEntryIdsin interfaceICollectionExtractor- Overrides:
extractEntryIdsin classFieldArrayCollectionExtractor- Parameters:
coll- - the collection to find the objects it holds- Returns:
- an array of ints which are the object ids.
- Throws:
SnapshotException- if there is a problem retrieving data from the snapshot- See Also:
ICollectionExtractor.hasExtractableContents()
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hasCollisionRatio
public boolean hasCollisionRatio()
Description copied from interface:IMapExtractorCheck if the extractor can calculate collision ratio- Specified by:
hasCollisionRatioin interfaceIMapExtractor- 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 collection) throws SnapshotException
Description copied from interface:IMapExtractorCalculates the collision ratio in the collection. Could be an estimate.- Specified by:
getCollisionRatioin interfaceIMapExtractor- Parameters:
collection- - 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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extractMapEntries
public java.util.Iterator<java.util.Map.Entry<IObject,IObject>> extractMapEntries(IObject collection) throws SnapshotException
Description copied from interface:IMapExtractorExtracts the contents of a map (i.e. an IObject representing a Map) and provides an Iterator over them- Specified by:
extractMapEntriesin interfaceIMapExtractor- 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
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