Package org.eclipse.mat.internal.collectionextract

Class ExtractionUtils

java.lang.Object

org.eclipse.mat.internal.collectionextract.ExtractionUtils

public class ExtractionUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
ExtractionUtils()

Method Summary

Modifier and Type	Method	Description
static IInstance	followOnlyNonArrayOutgoingReference(IObject obj)	Get the only non-array object field from the object.
static IObject	followOnlyOutgoingReferencesExceptLast(String field, IObject obj)	Walks the only non-array object field from the object, stopping at the second-last.
static int	getNumberOfNotNullArrayElements(int[] ids)
static int	getNumberOfNotNullArrayElements(long[] addresses)
static int	getNumberOfNotNullArrayElements(IObjectArray arrayObject)
static IObjectArray	getOnlyArrayField(IObject obj)	Get the only array field from the object.
static int[]	referenceArrayToIds(ISnapshot snapshot, long[] referenceArray)
static JdkVersion	resolveVersion(ISnapshot snapshot)
static Integer	toInteger(Object i)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ExtractionUtils

public ExtractionUtils()

Method Details

toInteger

public static Integer toInteger(Object i)

getNumberOfNotNullArrayElements

public static int getNumberOfNotNullArrayElements(IObjectArray arrayObject)

getNumberOfNotNullArrayElements

public static int getNumberOfNotNullArrayElements(long[] addresses)

getNumberOfNotNullArrayElements

public static int getNumberOfNotNullArrayElements(int[] ids)

referenceArrayToIds

public static int[] referenceArrayToIds(ISnapshot snapshot,
 long[] referenceArray)
                                 throws SnapshotException

Throws:

SnapshotException

followOnlyNonArrayOutgoingReference

public static IInstance followOnlyNonArrayOutgoingReference(IObject obj)
                                                     throws SnapshotException

Get the only non-array object field from the object. For example used for finding the HashMap from the HashSet

Parameters:

obj -

Returns:

null if no non-array, or duplicates found

Throws:

SnapshotException

followOnlyOutgoingReferencesExceptLast

public static IObject followOnlyOutgoingReferencesExceptLast(String field,
 IObject obj)
                                                      throws SnapshotException

Walks the only non-array object field from the object, stopping at the second-last.

Parameters:

obj -

Returns:

null if no non-array, or duplicates found

Throws:

SnapshotException

getOnlyArrayField

public static IObjectArray getOnlyArrayField(IObject obj)
                                      throws SnapshotException

Get the only array field from the object.

Parameters:

obj -

Returns:

null if no non-array, or duplicates found

Throws:

SnapshotException

resolveVersion

public static JdkVersion resolveVersion(ISnapshot snapshot)
                                 throws SnapshotException

Throws:

SnapshotException