org.teiid.common.buffer.impl
Class SizeUtility

java.lang.Object
  org.teiid.common.buffer.impl.SizeUtility

public final class SizeUtility
extends java.lang.Object

Utility methods to determine the size of Java objects, particularly with respect to the Teiid runtime types. The sizes are loosely based on expected heap size and are generally optimistic. Actual object allocation efficiency can be quite poor.

Field Summary

static int

REFERENCE_SIZE

Constructor Summary

SizeUtility()

Method Summary

long	getBatchSize(TupleBatch data)
protected long	getSize(java.lang.Object obj, boolean updateEstimate, boolean accountForValueCache) Get size of object

Methods inherited from class java.lang.Object

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

Field Detail

REFERENCE_SIZE

public static final int REFERENCE_SIZE

See Also:

Constant Field Values

Constructor Detail

SizeUtility

public SizeUtility()

Method Detail

getBatchSize

public long getBatchSize(TupleBatch data)

getSize

protected long getSize(java.lang.Object obj,
                       boolean updateEstimate,
                       boolean accountForValueCache)

Get size of object

Returns:

Size in bytes