AbstractStatisticsAggregator

java.lang.Object
- com.itextpdf.commons.actions.AbstractStatisticsAggregator

Direct Known Subclasses:

NumberOfPagesStatisticsAggregator, SizeOfPdfStatisticsAggregator
```
public abstract class AbstractStatisticsAggregator
extends java.lang.Object
```
Abstract class for statistics aggregation. Note that aggregator class must be thread safe.

Constructor Summary

Constructors
Constructor Description

AbstractStatisticsAggregator()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract void`	`aggregate(AbstractStatisticsEvent event)`	Aggregates data from the provided event.
`abstract void`	`merge(AbstractStatisticsAggregator aggregator)`	Merges data from the provided aggregator into this aggregator.
`abstract java.lang.Object`	`retrieveAggregation()`	Retrieves aggregated data.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AbstractStatisticsAggregator
```
public AbstractStatisticsAggregator()
```
- Method Detail
  - aggregate
```
public abstract void aggregate(AbstractStatisticsEvent event)
```
    Aggregates data from the provided event.
    
    Parameters:
    
    event - AbstractStatisticsEvent instance
  - retrieveAggregation
```
public abstract java.lang.Object retrieveAggregation()
```
    Retrieves aggregated data.
    
    Returns:
    
    aggregated data as Object
  - merge
```
public abstract void merge(AbstractStatisticsAggregator aggregator)
```
    Merges data from the provided aggregator into this aggregator.
    
    Parameters:
    
    aggregator - from which data will be taken.