com.metamatrix.common.buffer.impl
Class SizeUtility

java.lang.Object
  com.metamatrix.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 MetaMatrix runtime types.

Field Summary

static boolean	IS_64BIT
static int	REFERENCE_SIZE

Method Summary

static long	getBatchSize(java.lang.String[] types, java.util.List[] data) This method calculates the sizes of the tuples based on their list sizes Since we know the type and length, it jsut calculates size from that information, instead of walking whole object tree.
static long	getSize(java.lang.Object obj) Get size of object

Methods inherited from class java.lang.Object

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

Field Detail

IS_64BIT

public static final boolean IS_64BIT

REFERENCE_SIZE

public static final int REFERENCE_SIZE

Method Detail

getBatchSize

public static long getBatchSize(java.lang.String[] types,
                                java.util.List[] data)

This method calculates the sizes of the tuples based on their list sizes Since we know the type and length, it jsut calculates size from that information, instead of walking whole object tree.

Parameters:

types - - Data type for the each column

data - - data

Returns:

size in total

getSize

public static long getSize(java.lang.Object obj)

Get size of object

Returns:

Size in bytes