System and method for class loader constraint checking

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 ref...

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Bibliographic Details
Main Authors WEBSTER MATTHEW ALEXANDER, SLATTERY EDWARD JOHN, MCGUIRE RICHARD KENNETH
Format Patent
LanguageEnglish
Published 01.02.2005
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary: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.
Bibliography:Application Number: US20000738469