Examples of InvocationConstraints

net.jini.core.constraint.InvocationConstraints
An immutable aggregation of constraints into a set of requirements and a set of preferences. A requirement is a mandatory constraint that must be satisfied for the invocation. A preference is a desired constraint, to be satisfied if possible, but it will not be satisfied if it conflicts with a requirement. If two preferences conflict, it is arbitrary as to which one will be satisfied. If a constraint is not understood, due to lack of knowledge of the type of the constraint or the contents of the constraint, then the constraint cannot be satisfied.
Note that it is possible for an instance of this class to contain both requirements that conflict with each other, and preferences that conflict with each other and with requirements. @author Sun Microsystems, Inc. @since 2.0

Examples of net.jini.core.constraint.InvocationConstraints

     */
    private static void checkConstraints(ServerCapabilities serverCapabilities,
           InvocationConstraints constraints)
  throws UnsupportedConstraintException
    {
  InvocationConstraints unfulfilled =
      serverCapabilities.checkConstraints(constraints);
  for (Iterator i = unfulfilled.requirements().iterator(); i.hasNext();)
  {
      InvocationConstraint c = (InvocationConstraint) i.next();
      if (!(c instanceof Integrity)) {
    throw new UnsupportedConstraintException(
        "cannot satisfy unfulfilled constraint: " + c);

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Examples of net.jini.core.constraint.InvocationConstraints

      /*
       * Unmarshal method and check security constraints.
       */
      in = createMarshalInputStream(impl, request, integrity, context);
      method = unmarshalMethod(impl, in, context);
      InvocationConstraints sc =
    (serverConstraints == null ?
     InvocationConstraints.EMPTY :
     serverConstraints.getConstraints(method));
      if (integrity && !sc.requirements().contains(Integrity.YES)) {
    Collection requirements = new ArrayList(sc.requirements());
    requirements.add(Integrity.YES);
    sc = new InvocationConstraints(requirements, sc.preferences());
      }
      
      InvocationConstraints unfulfilled = request.checkConstraints(sc);
      for (Iterator i = unfulfilled.requirements().iterator();
     i.hasNext();)
      {
    InvocationConstraint c = (InvocationConstraint) i.next();
    if (!(c instanceof Integrity) ||
        (!integrity && c == Integrity.YES))

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Examples of net.jini.core.constraint.InvocationConstraints

                    if ((flags & 1) != 0) {
                        prefList.add(preferencesArray[i]);
                    }
                    flags >>= 1;
                }
                clientConstraints = new InvocationConstraints(reqList, prefList);
                ui.setClientProxyConstraints(clientConstraints);
                BasicMethodConstraints mc =
                    new BasicMethodConstraints(clientConstraints);
                try {
                    currentMethod =

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Examples of net.jini.core.constraint.InvocationConstraints

     *
     * @param method the method to use to compute the combined constraints
     * @return the computed combined constraints
     */
    private InvocationConstraints getConstraints(TestMethod testMethod) {
        InvocationConstraints sc = testMethod.parseConstraints();
        return InvocationConstraints.combine(clientConstraints, sc);
    }

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Examples of net.jini.core.constraint.InvocationConstraints

     * which were passed to the proxy when it's trust validator was called.
     *
     * @param method the <code>TestMethod</code> which was called.
     */
    private void checkClientConstraints(TestMethod testMethod) {
        InvocationConstraints c = null;
        c = iface.getConstraints().getConstraints(testMethod.getMethod());
        logger.log(CLIENTCONSTRAINTS, "client constraints from proxy: " + c);
        Collection imposedRequirements = new ArrayList(    // need mutable set
            clientConstraints.requirements());
        Set observedRequirements = c.requirements();
        Iterator it = observedRequirements.iterator();
        while (it.hasNext()) {
            Object obj = it.next();
            if (!imposedRequirements.contains(obj)) {
                logFailure("unexpected client constraint " + obj + " "

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Examples of net.jini.core.constraint.InvocationConstraints

        InvocationConstraints combinedConstraints) {
        logger.log(INTERNALCALLS,
            "Entering checkCombinedConstraints(method, context)");
        logger.log(COMBINEDCONSTRAINTS,
            "combined constraints: " + combinedConstraints);
        InvocationConstraints sc = method.parseConstraints();
        sc = InvocationConstraints.combine(sc, clientConstraints);
        Set imposedRequirements = sc.requirements();
        /* combined requirements must be mutable */
        Set combinedRequirements =
        new HashSet(combinedConstraints.requirements());
        Iterator it = imposedRequirements.iterator();
        while (it.hasNext()) {
            InvocationConstraint c = (InvocationConstraint)it.next();
            if (!combinedRequirements.contains(c)) {
                logFailure("Combined constraint is missing constraint " + c);
            }
            combinedRequirements.remove(c);
        }
        if (!combinedRequirements.isEmpty()) {
            InvocationConstraints residual =
                new InvocationConstraints(combinedRequirements, null);
            logFailure("Combined constraints contains extra "
                + "constraints: " + residual);
        }
        logger.log(INTERNALCALLS, "Leaving checkCombinedConstraints"
            +"(method, context)");

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Examples of net.jini.core.constraint.InvocationConstraints

        ArrayList mcArray = new ArrayList();
        TestMethod[] methods =
                    TestMethod.getDeclaredMethods(ConstraintsInterface.class);
        BasicMethodConstraints.MethodDesc desc = null;
        TestMethod multiMethod = null;
        InvocationConstraints constraints;
        for (int i=0; i<methods.length; i++) {
        if (methods[i].getName().equals("vAuthConf")) {
            continue;
        }
        if (methods[i].getName().equals("multi")) {
            multiMethod = methods[i];
            continue;
        }
        constraints = methods[i].parseConstraints();
        Class[] types = methods[i].getParameterTypes();
        desc = new BasicMethodConstraints.MethodDesc(
                            methods[i].getName(),
                            types,
                            constraints);
        mcArray.add(desc);
        }


        /*
             * no constraints for the getProxyVerifier, unexport, or
         * callAfterUnexport methods. This is done to ensure that
         * these calls will be performed regardless of client
         * constraints (assuming the client's constraints don't conflict)
         */
        mcArray.add(
            new BasicMethodConstraints.MethodDesc(
                                      "getProxyVerifier",
                       new Class[]{},
                       InvocationConstraints.EMPTY));
        mcArray.add(
            new BasicMethodConstraints.MethodDesc(
                                      "unexport",
                       new Class[]{},
                       InvocationConstraints.EMPTY));
        mcArray.add(
            new BasicMethodConstraints.MethodDesc(
                                      "callAfterUnexport",
                       new Class[]{},
                       InvocationConstraints.EMPTY));


        /*
         * The multi descriptor must follow all of the more qualified
         * entries. Need to test for null because sometimes when
         * debugging the multi methods are removed from the interface
         */
        if (multiMethod != null) {
        constraints = multiMethod.parseConstraints();
        mcArray.add(
            new BasicMethodConstraints.MethodDesc("multi",
                                   constraints));
        }


        /* default constraints must be dead last */
        InvocationConstraints defaultConstraints = new InvocationConstraints(
                              new InvocationConstraint[]{ClientAuthentication.YES,
                                               Confidentiality.YES},
                              null);
        mcArray.add(
            new BasicMethodConstraints.MethodDesc(defaultConstraints));

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Examples of net.jini.core.constraint.InvocationConstraints


    /**
     * Implementation of interface method.
     */
    public InvocationConstraints getConstraints(Method method) {
        return new InvocationConstraints(required_ic,null);
    }

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Examples of net.jini.core.constraint.InvocationConstraints

      public boolean hasNext() {
    return i > 0;
      }
      public Object next() {
    if (i > 0) {
        return new InvocationConstraints(
                        new InvocationConstraint[] { required_ic[--i] },
                        null);
    } else if (i == 0) {
                    --i;
        return InvocationConstraints.EMPTY;

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Examples of net.jini.core.constraint.InvocationConstraints

            
            // 1
            String name = "someMethod";
            Class[] types = new Class[] {int.class, Object.class};
            InvocationConstraint ic = Delegation.YES;
            InvocationConstraints constraints = new InvocationConstraints(
                    ic, null);
            callConstructor(testCase, name, types, constraints);
            
            // 2
            if (testCase == case2arg) {
                name = "*someMethod";
                callConstructor(testCase, name, types, constraints);


                name = "*5someMethod";
                callConstructor(testCase, name, types, constraints);
            }
            
            // 3
            if (testCase == case2arg) {
                name = "someMethod*";
                callConstructor(testCase, name, types, constraints);
            }
            
            // 4
            if (testCase == case3arg) {
                name = "someMethod";
                Class[] storedTypes = new Class[types.length];
                for (int j = 0; j < types.length; ++j) {
                    storedTypes[j] = types[j];
                }
                callConstructor(testCase, name, types, constraints);
                if (storedTypes.length != types.length) {
                    throw new TestException(
                            "types array length was modified");
                }
                for (int j = 0; j < types.length; ++j) {
                    if (storedTypes[j] != types[j]) {
                        throw new TestException(
                                "types array was modified");
                    }
                }
                
            }
            
            // 5
            if (testCase == case3arg) {
                name = "someMethod";
                Class[] types2 = new Class[types.length];
                for (int j = 0; j < types.length; ++j) {
                    types2[j] = types[j];
                }
                MethodDesc md1 =
                    callConstructor(testCase, name, types, constraints);
                MethodDesc md2 =
                    callConstructor(testCase, name, types2, constraints);
                if (!md1.equals(md2)) {
                    throw new TestException(
                            "MethodDesc objects should be equal");
                }
                types2[0] = long.class;
                if (!md1.equals(md2)) {
                    throw new TestException(
                            "MethodDesc objects should be equal");
                }
            }
            
            // 6
            name = "someMethod";
            InvocationConstraints emptyConstraints = new InvocationConstraints(
                    (InvocationConstraint) null, null);
            MethodDesc md1 =
                callConstructor(testCase, name, types, emptyConstraints);
            MethodDesc md2 =
                callConstructor(testCase, name, types, null);

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