evio::IEvioFilter Class Reference

This interface allows applications to create filters so that they only receive certain structures when events are being processed. More...

#include <IEvioFilter.h>

Public Member Functions
virtual bool	accept (StructureType const &structureType, std::shared_ptr< BaseStructure > structure)=0
	Accept or reject the given structure. More...

Detailed Description

This interface allows applications to create filters so that they only receive certain structures when events are being processed.

Below is a filter that accepts any structure that has tag = 400.

class MyFilter : IEvioFilter {
    public bool accept(StructureType & structureType, std::shared_ptr<BaseStructure> structure) {
        return (structure->getHeader()->getTag() == 400);
    }
};
MyFilter myfilter();
EventParser.getInstance().setEvioFilter(myFilter);

Author

heddle (Original java class)

timmer

Member Function Documentation

virtual bool evio::IEvioFilter::accept ( StructureType const &  structureType, std::shared_ptr< BaseStructure >  structure  )

pure virtual

Accept or reject the given structure.

Parameters

structureType	the structure type, a StructureType enum, of the structure that was just found, e.g., StructureType.BANK.
structure	the structure that was just found. From its header the tag, num, length, and data type are available. The application can filter based on those quantities or on the data itself.

Returns

true if the structure passes the filter and should be given to the listeners.

See Also

StructureType

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The documentation for this class was generated from the following file:

• IEvioFilter.h