[mapguide-users] Issues selecting a feature with custom coding

[Kenneth, GEOGRAF A/S]

The featureID is not converted into a string and then base64 encoded.
It is split into 4 bytes (C representation of an int) that are then base 
64 encoded:

33181 = 0x 00 00 81 9D = 0x 9D 81 00 00

The four bytes converted to Base64 gives nYEAAA==

Regards, Kenneth, GEOGRAF A/S



nclayton skrev:
> Here are the results of both the mgos base64 value and the php base64_encode
> value:
>
> Actual FeatId: 33181
> MGOS Value: nYEAAA==
> base64_encode Value: MzMxODE=
>
> I found code for writing a base64 function in javascript, and it gives the
> same result as the php function.
>
>
>
> Kenneth, GEOGRAF A/S wrote:
>   
>> If you select the feature, you can read the WKT or BoundingBox for the 
>> object.
>> With this info, you can calculate the Center X,Y + Scale, and manually 
>> zoom to it.
>>
>> I have not worked enough with the selection to understand it completely.
>> However, I think you are mistaken about the Base64 functions not being 
>> compatible.
>> What appears to be different about the two encodings?
>>
>> If they truly are different, it is very easy to write your own base64 
>> encoding/decoding functions.
>>
>> Regards, Kenneth, GEOGRAF A/S
>>
>>
>>
>> nclayton skrev:
>>     
>>> Hi everyone,
>>> Here is my situation:
>>>
>>> I am hacking up the mapviewerphp files to fit the needs of the company I
>>> work for. One piece of functionality that is requried is that after a
>>> user
>>> queries our database for owner information, it is displayed in a new
>>> frame.
>>> Along with this information, there is a 'Zoom to Parcel' link. When the
>>> user
>>> clicks this, it should zoom to that parcel and select it without
>>> affecting
>>> the owner data list.
>>>
>>> My issue right now is in the selection of the parcel. I'm folling the
>>> code
>>> given in the dev guide, but my $selection->ToXml() always comes out as:
>>>
>>> <?xml version="1.0" encoding="UTF-8"?><FeatureSet
>>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>> xsi:noNamespaceSchemaLocation="FeatureSet-1.0.0.xsd"></FeatureSet>
>>>
>>> I am creating and passing in a query filter of "PARCEL_ID_ = '12345'"
>>> (with
>>> the appropriate parcel number supplied of course). I know that this
>>> PARCEL_ID_ value exists.
>>>
>>> I have tried manually creating the featureset query, since I can get the
>>> feature id of the selected parcel. The problem with that is that mgos
>>> uses a
>>> base64 encoding that doesn't match php's base64_encode() output, so
>>> that's a
>>> no-go as well.
>>>
>>> Any help and suggestions are appreciated
>>>
>>> --
>>> Nick
>>>   
>>>       
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>>
>>
>>     
>
>   
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