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## Package org.eclipse.birt.data.engine.api.aggregation

Data Engine aggregation API package.

See:
Description

Interface Summary
IAggregation | Deprecated. use IAggrFunction instead
IAggregationFactory |
IAggrFunction | Each instance of IAggrFunction defines an aggregation function which can be used in BIRT.
IParameterDefn |

Class Summary
Accumulator | The Accumulator class calculates values for its associated Aggregation.
Aggregation | Deprecated. use AggrFunction instead
AggregationManager |

## Package org.eclipse.birt.data.engine.api.aggregation Description

Data Engine aggregation API package.

This package contains interface and classes that are used to create an aggregation. All user-defined aggregations should implement the interface defined in this package.

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