System and method for class loader constraint checking

Details System and method for class loader constraint checking System and method for class loader constraint checking

2005-02-01

2005-02-01

Nguyen-Ba, Antony (Department: 2122)

Data processing: software development, installation, and managem

Software program development tool

Linking

C717S116000, C717S118000, C717S148000, C718S001000, C719S331000

Reexamination Certificate

active

06851111

ABSTRACT:
A computer system includes multiple class loaders for loading program class files into the system. A constraint checking mechanism is provided wherein a first class file loaded by a first class loader makes a symbolic reference to a second class file loaded by a second class loader, the symbolic reference including a descriptor of a third class file. The constraint mechanism requires that the first and second class files agree on the identity of the third class file and stores a list of constraints as a set of asymmetric relationships between class loaders. Each stored constraint, for a class loader which loaded a class file that contains a symbolic reference to another class file, includes a first parameter denoting the class loader which loaded the class file to which the symbolic references is made; and a second parameter denoting a class file which is identified by a descriptor in said symbolic reference.

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