edu.isi.pegasus.planner.namespace.aggregator

Interface Aggregator

All Known Implementing Classes:

Abstract, MAX, MIN, Sum, UniqueMerge, Update

public interface Aggregator

An internal interface, that allows us to perform aggregation functions on profiles during merging of profiles.

Version:

$Revision$

Author:

Karan Vahi

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	VERSION The version number associated with this API of Profile Aggregators.

Method Summary

Modifier and Type	Method and Description
java.lang.String	compute(java.lang.String oldValue, java.lang.String newValue, java.lang.String dflt) Do the aggregation function on the profile values.

Field Detail

VERSION

static final java.lang.String VERSION

The version number associated with this API of Profile Aggregators.

See Also:

Constant Field Values

Method Detail

compute

java.lang.String compute(java.lang.String oldValue,
                         java.lang.String newValue,
                         java.lang.String dflt)

Do the aggregation function on the profile values.

Parameters:

oldValue - the existing value for the profile.

newValue - the new value being added to the profile.

dflt - the default value to be used in case the values are not of the correct type.

Returns:

the computed value as a String.