Unable to remove target from internal database

2025 8 6
2 个回答
更新时间：2025 8 7
2 次查看（30 天）

0 个投票

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

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回答（2 个）

Meg Noah
Meg Noah 2025-8-6
Ran in:

0 个投票

Ran in:
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"
Jürgen
Jürgen 2025-8-7

0 个投票

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.

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Meg Noah
Meg Noah 2025-8-7
编辑：Meg Noah 2025-8-7
Ran in:
Ran in:
@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"

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R2021b

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提问:

Jürgen
Jürgen
2025-8-6

编辑：

Meg Noah
Meg Noah
2025-8-7

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