Re: Agenda to EPICS V4 meeting, Feb 18th 2014

Some reading to be prepared for the meeting.

To match pvData naming convention we would get:

variable size array aka sequence, e.g. int[]
bounded size array, e.g. int<1024>
fixed size array, e.g. int[16]

bounded size string, e.g. string<40> (== EPICS string)

This would imply the following changes in pvIntrospect.h (only
introspection interface API is affected):

// new interface
public class Array : public Field
{
    // 0 not valid value, means undefined
    std::size_t getMaximumCapacity();

    // 0 not valid value, means undefined
    std::size_t getFixedLength();
}

// extends Array and not Field as now
public class ScalarArray : public Array {
    . . .
}


// extends Array and not Field as now
public class StructureArray : public Array {
    . . .
}


// extends Array and not Field as now
public class UnionArray : public Array {
    . . .
}


// String needs to extend Scalar to get getMaximumCapacity() method
public class StringScalar : public Scalar {

    // 0 not valid value, means undefined
    std::size_t getMaximumCapacity()
}


FieldCreate class method:

    ScalarArrayConstPtr createScalarArray(ScalarType elementType) const;

becomes

    ScalarArrayConstPtr createScalarArray(ScalarType elementType,
std::size_t capacity_bound = 0, std::size_t fixed_length = 0) const;

(same for createStructureArray and createUnionArray)
FieldBuilder method should get some minor changes too.

Matej



On Tue, Feb 18, 2014 at 11:35 AM, Matej Sekoranja <mat...@gm...
> wrote:

> Here is what I want to do with the arrays.
>
> Matej
>
>
> On Mon, Feb 17, 2014 at 10:45 PM, White, Greg <gr...@sl...>wrote:
>
>> Colleagues, please find below the Agenda for our regularly scheduled
>> meeting.
>>
>> (Note changes from the nominally forecast agenda [3]).
>>
>> 1. Preliminaries
>> 2. Status review [1]
>> 3. Review agenda for meeting in Ljubljana [2]
>> 4. Fixed size arrays (MS)
>>    Brief, to see if all in agreement to moving this to an action item.
>> Make
>>    sure Marty is happy with what it entails.
>> 5. pvMS review (if time)
>>
>> Cheers
>> Greg for Andrew and Greg
>>
>> [1]
>> https://docs.google.com/spreadsheet/pub?key=0AiY7lwlw4Y4XdDNBVzRUN0FOMGw1Ty1pZk9MeGtPVnc&output=html
>> [2] http://sourceforge.net/mailarchive/message.php?msg_id=31944559
>> [3] https://plus.google.com/u/0/114828842338418222242/posts
>>
>>
>>
>> ------------------------------------------------------------------------------
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>
>