6327   Validation access check failed

Cause

This error is raised by the validateMethod method of the JadeMetadataAnalyzer class when a user-defined security check fails.

Action

Change your method code to remove the invalid access. For example, the following methods check that input method source code does not reference the:

• beginTransaction instruction

• Employee class

• deposit method of the Account class

First, create a subclass of the JadeMetadataAnalyzer class (called MyAnalyzer) and reimplement the canAccessStatement and canAccessSchemaEntity methods, as follows.

canAccessStatement(statement: String; err: String output): Boolean;
begin
    if statement = Statement_BeginTransaction then
        err := 'transactions are not allowed';
        return false;
    endif;
    return true;
end;

canAccessSchemaEntity(se: SchemaEntity; err: String output): Boolean;
begin
    if se.isKindOf(Class) then
       if se.name = 'Employee' then
           err := 'access to class is not allowed';
           return false;
       endif;
    elseif se.isKindOf(Method) then
       if se.Method.schemaType.name = 'Account' and se.name = 'deposit' then
           err := 'access to method is not allowed';
           return false;
       endif;
    endif;
    return true;
end;

The method in the following example then validates the method source.

checkMethod(source: String; schemaType: Type);
vars
    analyzer      : MyAnalyzer;
    err, pos, len : Integer;
    msg           : String;
begin
    create analyzer;
    analyzer.validateMethod(source, schemaType, currentSchema, err, pos,
                            len, msg);
    if err = 0 then
        write 'method validated successfully';
    else
        write 'method validation failed - ' & process.getErrorText(err);
        if err = JadeMetadataAnalyzer.AccessCheckFailed then
            write msg;
        endif;
    endif;
epilog
    delete analyzer;
end;