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72 lines
1.8 KiB
72 lines
1.8 KiB
# MIPLearn: Extensible Framework for Learning-Enhanced Mixed-Integer Optimization
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# Copyright (C) 2020-2021, UChicago Argonne, LLC. All rights reserved.
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# Released under the modified BSD license. See COPYING.md for more details.
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@pydef mutable struct PyFileInstance <: miplearn.Instance
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function __init__(self, filename)
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self.filename = filename
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self.loaded = nothing
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self.samples = nothing
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end
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function to_model(self)
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return self.loaded.py.to_model()
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end
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function get_instance_features(self)
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return self.loaded.py.get_instance_features()
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end
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function get_variable_features(self, var_name)
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return self.loaded.py.get_variable_features(var_name)
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end
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function get_variable_category(self, var_name)
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return self.loaded.py.get_variable_category(var_name)
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end
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function get_constraint_features(self, cname)
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return self.loaded.py.get_constraint_features(cname)
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end
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function get_constraint_category(self, cname)
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return self.loaded.py.get_constraint_category(cname)
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end
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function load(self)
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if self.loaded === nothing
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self.loaded = load_instance(self.filename)
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self.samples = self.loaded.py.samples
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end
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end
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function free(self)
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self.loaded = nothing
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self.samples = nothing
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end
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function flush(self)
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self.loaded.py.samples = self.samples
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save(self.filename, self.loaded)
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end
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end
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struct FileInstance <: Instance
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py::PyCall.PyObject
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filename::AbstractString
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end
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function FileInstance(filename)::FileInstance
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filename isa AbstractString || error("filename should be a string. Found $(typeof(filename)) instead.")
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return FileInstance(
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PyFileInstance(filename),
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filename,
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)
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end
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export FileInstance
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