Unable to remove target from internal database

I have created a traget:

testTarget = target.create("Processor", Name="My Processor", Manufacturer="XXX");

languageimplementation = target.create("LanguageImplementation");

languageimplementation.AtomicFloatSize = 64;

languageimplementation.AtomicIntegerSize = 32;

languageimplementation.DataTypes.Char.Size = 8;

languageimplementation.DataTypes.Double.Size = 64;

languageimplementation.DataTypes.Float.Size = 32;

languageimplementation.DataTypes.Half.IsSupported = false;

languageimplementation.DataTypes.Half.Size = 16;

languageimplementation.DataTypes.Int.Size = 32;

languageimplementation.DataTypes.Long.Size = 32;

languageimplementation.DataTypes.LongLong.Size = 64;

languageimplementation.DataTypes.Pointer.Size = 32;

languageimplementation.DataTypes.PtrDiffT.Size = 32;

languageimplementation.DataTypes.Short.Size = 16;

languageimplementation.DataTypes.SizeT.Size = 32;

languageimplementation.Endianess = "Little";

languageimplementation.WordSize = 32;

testTarget.LanguageImplementations(1) = languageimplementation

objs = target.add(testTarget, UserInstall=false); % don't persist yet until we know how to remove it

% remove the target, attempt 1

target.remove(testTarget);

% remove the target, attempt #2

trgt = target.get('Processor', 'XXX-My Processor');

target.remove(trgt);

% remove the target, attempt #3

target.remove(objs);

% remove the target, attempt 4

target.remove('Processor', 'XXX-My Processor', 'IncludeAssociations', true);

All attempts to remove the target from the internal database fail with the same error message:

Error using targetframework.internal.repository.TargetRepository/remove

Object target.LanguageImplementation is invalid. Use target.create to create the object.

Error in target.remove (line 75)

tr.remove(arguments{:}, options);

The message that the "Object target.LanguageImplementation is invalid" is because the valid flag ist set to 1 in the target's LanguageImplementation.

I am also wondering where Matlab stores the targets. I can find targets in "C:\Program Files\MATLAB_R2021b_x64\toolbox\targetframework\data\model\data.xml". But the targets created by the user don't seem to appear there, even when 'UserInstall' is set to true when adding the target with target.add().

Best Regards,

Juergen

Answer 1

[Meg Noah]

testTarget = target.create("Processor", Name="My Processor", Manufacturer="XXX");

languageimplementation = target.create('LanguageImplementation', ...
              'Name', 'Armv8-A LP64', ...
              'Copy', 'ARM Compatible-ARM Cortex');

languageimplementation.AtomicFloatSize = 64;
languageimplementation.AtomicIntegerSize = 32;
languageimplementation.DataTypes.Char.Size = 8;
languageimplementation.DataTypes.Double.Size = 64;
languageimplementation.DataTypes.Float.Size = 32;
languageimplementation.DataTypes.Half.IsSupported = false;
languageimplementation.DataTypes.Half.Size = 16;
languageimplementation.DataTypes.Int.Size = 32;
languageimplementation.DataTypes.Long.Size = 32;
languageimplementation.DataTypes.LongLong.Size = 64;
languageimplementation.DataTypes.Pointer.Size = 32;
languageimplementation.DataTypes.PtrDiffT.Size = 32;
languageimplementation.DataTypes.Short.Size = 16;
languageimplementation.DataTypes.SizeT.Size = 32;
languageimplementation.Endianess = "Little";
languageimplementation.WordSize = 32;
testTarget.LanguageImplementations = languageimplementation;

target.add(testTarget)

"target.add" summary:

    Objects added to internal database for current MATLAB session:
        target.LanguageImplementation    "Armv8-A LP64"
        target.Processor                 "XXX-My Processor"

ans = 
  1×2 heterogeneous Object (Processor, LanguageImplementation) array with properties:

    Id
    Name
    IsValid

% remove the target, attempt 1
target.remove(testTarget);

"target.remove" summary:

    Objects removed from internal database:
        target.Processor    "XXX-My Processor"

Answer 2

[Jürgen]

Hi Noah,

which Matlab version did you use? I copied your example and got follwing errors:

2021b:

Error using targetframework.internal.repository.TargetRepository/remove

Object target.LanguageImplementation is invalid. Use target.create to create the object.

2023b:

1 object not removed because they do not exist.

[Meg Noah]

@Jürgen

Hi Jurgen,

I just used the online version here in the comment section. Copy and paste the code into a CODE block and click the RUN (green triangle button) here in a comment. Try this one:

testTarget = target.create("Processor", Name="My Processor", Manufacturer="XXX");

languageimplementation = target.create('LanguageImplementation', ...
    'Name', 'MyProcessorImplementation');

languageimplementation.AtomicFloatSize = 64;
languageimplementation.AtomicIntegerSize = 32;
languageimplementation.DataTypes.Char.Size = 8;
languageimplementation.DataTypes.Double.Size = 64;
languageimplementation.DataTypes.Float.Size = 32;
languageimplementation.DataTypes.Half.IsSupported = false;
languageimplementation.DataTypes.Half.Size = 16;
languageimplementation.DataTypes.Int.Size = 32;
languageimplementation.DataTypes.Long.Size = 32;
languageimplementation.DataTypes.LongLong.Size = 64;
languageimplementation.DataTypes.Pointer.Size = 32;
languageimplementation.DataTypes.PtrDiffT.Size = 32;
languageimplementation.DataTypes.Short.Size = 16;
languageimplementation.DataTypes.SizeT.Size = 32;
languageimplementation.Endianess = "Little";
languageimplementation.WordSize = 32;
testTarget.LanguageImplementations = languageimplementation;
target.add(testTarget)

"target.add" summary:

    Objects added to internal database for current MATLAB session:
        target.LanguageImplementation    "MyProcessorImplementation"
        target.Processor                 "XXX-My Processor"

ans = 
  1×2 heterogeneous Object (Processor, LanguageImplementation) array with properties:

    Id
    Name
    IsValid

% remove the target, attempt 1
target.remove(testTarget);

"target.remove" summary:

    Objects removed from internal database:
        target.Processor    "XXX-My Processor"