com.bigdata.relation.rule.eval

Class ChunkTrace

java.lang.Object

com.bigdata.relation.rule.eval.ChunkTrace

public class ChunkTrace
extends Object

Utility class that may be used to trace the chunks accepted for join processing for each predicate. The output has the form

 n[m]
 

where n is the evaluation order of the predicate and m is the #of elements in the chunk.

Version:

$Id$

Author:

Bryan Thompson

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	col Zero to enable the System.err trace of chunks accepted for each join dimension -or- -1 to disable.

Constructor Summary

Constructors

Constructor and Description
ChunkTrace()

Method Summary

Methods

Modifier and Type	Method and Description
static void	chunk(int orderIndex, Object[] chunk)

Methods inherited from class java.lang.Object

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

Field Detail

col

protected static int col

Zero to enable the System.err trace of chunks accepted for each join dimension -or- -1 to disable. This field is the column count of the output and is used to wrap the output so as to not cause eclipse undue distress with long lines.

Note: This is static so that it will count for all concurrent JoinTask for some JoinMasterTask, at least those running in the same JVM.

Constructor Detail

ChunkTrace

public ChunkTrace()

Method Detail

chunk

public static final void chunk(int orderIndex,
         Object[] chunk)