Class AbstractLongAggregator

Abstract aggregator that processes numeric values extracted from a collection of entries in a cache.

Inheritance
object
AbstractAggregator
AbstractLongAggregator
LongMax
LongMin
LongSum
Implements
Inherited Members
Namespace: Tangosol.Util.Aggregator
Assembly: Coherence.dll
Syntax
public abstract class AbstractLongAggregator : AbstractAggregator, IParallelAwareAggregator, IEntryAggregator, IPortableObject
Remarks

All the extracted objects (Byte, Int16, Int32, Int64, Single, Double) will be treated as Int64 values. If the collection of entries is empty, a null result is returned.

Constructors

AbstractLongAggregator()

Default constructor.

Declaration
public AbstractLongAggregator()

AbstractLongAggregator(string)

Construct a AbstractLongAggregator aggregator.

Declaration
public AbstractLongAggregator(string member)
Parameters
Type Name Description
string member

The name of the member that returns a value in the form of any .NET object out of Byte, Int16, Int32, Int64, Single, Double.

AbstractLongAggregator(IValueExtractor)

Construct a AbstractLongAggregator aggregator.

Declaration
public AbstractLongAggregator(IValueExtractor extractor)
Parameters
Type Name Description
IValueExtractor extractor

The extractor that provides a value in the form of any .NET object out of Byte, Int16, Int32, Int64, Single, Double.

Fields

m_count

The count of processed entries.

Declaration
[NonSerialized]
protected int m_count
Field Value
Type Description
int

m_result

The running result value.

Declaration
[NonSerialized]
protected long m_result
Field Value
Type Description
long

Methods

FinalizeResult(bool)

Obtain the result of the aggregation.

Declaration
protected override object FinalizeResult(bool isFinal)
Parameters
Type Name Description
bool isFinal

true to indicate that the final result of the aggregation process should be returned; this will only be false if a parallel approach is being used.
Returns
Type Description
object

The result of the aggregation process.
Overrides
Remarks

If the isFinal parameter is true, the returned object must be the final result of the aggregation; otherwise, the returned object will be treated as a partial result that should be incorporated into the final result.

Init(bool)

Initialize the aggregation result.

Declaration
protected override void Init(bool isFinal)
Parameters
Type Name Description
bool isFinal

true is passed if the aggregation process that is being initialized must produce a final aggregation result; this will only be false if a parallel approach is being used and the initial (partial) aggregation process is being initialized.
Overrides

Implements