/**
* Perform a SubSet function against two defined Bags.
*
* @param firstBag
* @param secondBag
* @param pip
* @return
* @throws XACML3EntitlementException
*/
private boolean SubSet(DataBag firstBag, DataBag secondBag, XACMLEvalContext pip)
throws XACML3EntitlementException {
int subSetCount = 0;
// Iterate over the First Bag.
for (int b = 0; b < firstBag.size(); b++) {
DataValue dataValue1 = (DataValue) firstBag.get(b).doEvaluate(pip);
for (int z = 0; z < secondBag.size(); z++) {
DataValue dataValue2 = (DataValue) secondBag.get(z).doEvaluate(pip);
// Check Equality by using this Types Equality Function.
AnyuriEqual fEquals = new AnyuriEqual();
fEquals.addArgument(dataValue2);
fEquals.addArgument(dataValue1);
FunctionArgument result = fEquals.doEvaluate(pip);
if (result.isTrue()) {
subSetCount++;
break;
}
} // End of Inner Loop.
} // End of Outer For Loop.
// Determine if we have in-fact a subSet.
return (subSetCount == firstBag.size());
}
public FunctionArgument evaluate(XACMLEvalContext pip) throws XACML3EntitlementException {
int args = getArgCount();
if (args != 2) {
throw new IndeterminateException(
"Function Requires 2 arguments, " + "however " + args + " in stack.");
}
// Iterate Over the 2 DataBag's in Stack, Evaluate and determine if First Bag is a Subset of the
// Second Bag and
// in reverse and then And against each result.
boolean firstSubSet = false;
boolean secondSubSet = false;
DataBag firstBag = null;
DataBag secondBag = null;
try {
firstBag = (DataBag) getArg(0).doEvaluate(pip);
secondBag = (DataBag) getArg(1).doEvaluate(pip);
// Verify our Data Type with First Data Bag's Data Type.
if (firstBag.getType().getIndex() != secondBag.getType().getIndex()) {
throw new IndeterminateException(
"First Bag Type: "
+ firstBag.getType().getTypeName()
+ ", however the subsequent Bag Type was "
+ secondBag.getType().getTypeName());
}
// Is the First Bag a SubSet of the Second?
firstSubSet = this.SubSet(firstBag, secondBag, pip);
// Is the Second Bag a SubSet of the First?
secondSubSet = this.SubSet(secondBag, firstBag, pip);
} catch (Exception e) {
throw new IndeterminateException("Iterating over Arguments Exception: " + e.getMessage());
}
// And our Conditions.
return (firstSubSet & secondSubSet)
? FunctionArgument.trueObject
: FunctionArgument.falseObject;
}
public FunctionArgument evaluate(XACMLEvalContext pip) throws XACML3EntitlementException {
int args = getArgCount();
if (args < 2) {
throw new IndeterminateException(
"Function Requires at least 2 arguments, " + "however " + getArgCount() + " in stack.");
}
// Create our union DataBag from other Bags.
DataBag unionBag = new DataBag();
// Iterate Over All DataBag's in Stack, Evaluate and create a Union of all Bags with Unique
// Objects.
try {
for (int i = 0; i < args; i++) {
DataBag bag = (DataBag) getArg(i).doEvaluate(pip);
if (bag == null) {
continue;
}
// Set our Union Data Bag with First Bag's Data Type and check subsequent Bags.
if (i == 0) {
unionBag.setType(bag.getType());
} else {
// Verify our Data Type with First Data Bag's Data Type.
if (bag.getType().getIndex() != unionBag.getType().getIndex()) {
throw new IndeterminateException(
"First Bag Type: "
+ unionBag.getType().getTypeName()
+ ", however a subsequent Bag Type was "
+ bag.getType().getTypeName());
}
}
// Iterate over the current Bag.
for (int b = 0; b < bag.size(); b++) {
DataValue dataValue = (DataValue) bag.get(b).doEvaluate(pip);
boolean contained = false;
for (int z = 0; z < unionBag.size(); z++) {
// Apply the Typed Equal Function to determine if
// the object already exists in the Union Bag.
TimeEqual fEquals = new TimeEqual();
fEquals.addArgument(unionBag.get(z));
fEquals.addArgument(dataValue);
FunctionArgument result = fEquals.doEvaluate(pip);
if (result.isTrue()) {
contained = true;
break;
}
}
// Add the Object if not contained.
if (!contained) {
// Add the Unique DataValue Element into the Union Bag.
unionBag.add(dataValue);
}
} // End of Inner For Loop.
} // End of Outer For Loop.
} catch (Exception e) {
throw new IndeterminateException("Iterating over Arguments Exception: " + e.getMessage());
}
// Return our UnionBag Value.
return unionBag;
}
