public void modifyLeftTuple(
LeftTuple leftTuple, PropagationContext context, InternalWorkingMemory workingMemory) {
boolean executeAsOpenQuery = openQuery;
if (executeAsOpenQuery) {
// There is no point in doing an open query if the caller is a non-open query.
Object object = ((InternalFactHandle) leftTuple.get(0)).getObject();
if (object instanceof DroolsQuery && !((DroolsQuery) object).isOpen()) {
executeAsOpenQuery = false;
}
}
if (!executeAsOpenQuery) {
// Was never open so execute as a retract + assert
if (leftTuple.getFirstChild() != null) {
this.sink.propagateRetractLeftTuple(leftTuple, context, workingMemory);
}
assertLeftTuple(leftTuple, context, workingMemory);
return;
}
InternalFactHandle handle = (InternalFactHandle) leftTuple.getObject();
DroolsQuery queryObject = (DroolsQuery) handle.getObject();
if (queryObject.getAction() != null) {
// we already have an insert scheduled for this query, but have re-entered it
// do nothing
return;
}
Object[] argTemplate =
this.queryElement.getArgTemplate(); // an array of declr, variable and literals
Object[] args =
new Object[argTemplate.length]; // the actual args, to be created from the template
// first copy everything, so that we get the literals. We will rewrite the declarations and
// variables next
System.arraycopy(argTemplate, 0, args, 0, args.length);
int[] declIndexes = this.queryElement.getDeclIndexes();
for (int i = 0, length = declIndexes.length; i < length; i++) {
Declaration declr = (Declaration) argTemplate[declIndexes[i]];
Object tupleObject = leftTuple.get(declr).getObject();
Object o;
if (tupleObject instanceof DroolsQuery) {
// If the query passed in a Variable, we need to use it
ArrayElementReader arrayReader = (ArrayElementReader) declr.getExtractor();
if (((DroolsQuery) tupleObject).getVariables()[arrayReader.getIndex()] != null) {
o = Variable.v;
} else {
o = declr.getValue(workingMemory, tupleObject);
}
} else {
o = declr.getValue(workingMemory, tupleObject);
}
args[declIndexes[i]] = o;
}
int[] varIndexes = this.queryElement.getVariableIndexes();
for (int i = 0, length = varIndexes.length; i < length; i++) {
if (argTemplate[varIndexes[i]] == Variable.v) {
// Need to check against the arg template, as the varIndexes also includes re-declared
// declarations
args[varIndexes[i]] = Variable.v;
}
}
queryObject.setParameters(args);
((UnificationNodeViewChangedEventListener) queryObject.getQueryResultCollector())
.setVariables(varIndexes);
QueryUpdateAction action = new QueryUpdateAction(context, handle, leftTuple, this);
context.getQueue1().addFirst(action);
}
public DroolsQuery createDroolsQuery(
LeftTuple leftTuple, InternalFactHandle handle, InternalWorkingMemory workingMemory) {
Object[] argTemplate =
this.queryElement.getArgTemplate(); // an array of declr, variable and literals
Object[] args =
new Object[argTemplate.length]; // the actual args, to be created from the template
// first copy everything, so that we get the literals. We will rewrite the declarations and
// variables next
System.arraycopy(argTemplate, 0, args, 0, args.length);
int[] declIndexes = this.queryElement.getDeclIndexes();
for (int i = 0, length = declIndexes.length; i < length; i++) {
Declaration declr = (Declaration) argTemplate[declIndexes[i]];
Object tupleObject = leftTuple.get(declr).getObject();
Object o;
if (tupleObject instanceof DroolsQuery) {
// If the query passed in a Variable, we need to use it
ArrayElementReader arrayReader = (ArrayElementReader) declr.getExtractor();
if (((DroolsQuery) tupleObject).getVariables()[arrayReader.getIndex()] != null) {
o = Variable.v;
} else {
o = declr.getValue(workingMemory, tupleObject);
}
} else {
o = declr.getValue(workingMemory, tupleObject);
}
args[declIndexes[i]] = o;
}
int[] varIndexes = this.queryElement.getVariableIndexes();
for (int i = 0, length = varIndexes.length; i < length; i++) {
if (argTemplate[varIndexes[i]] == Variable.v) {
// Need to check against the arg template, as the varIndexes also includes re-declared
// declarations
args[varIndexes[i]] = Variable.v;
}
}
UnificationNodeViewChangedEventListener collector =
new UnificationNodeViewChangedEventListener(
leftTuple, varIndexes, this, this.tupleMemoryEnabled);
boolean executeAsOpenQuery = openQuery;
if (executeAsOpenQuery) {
// There is no point in doing an open query if the caller is a non-open query.
Object object = ((InternalFactHandle) leftTuple.get(0)).getObject();
if (object instanceof DroolsQuery && !((DroolsQuery) object).isOpen()) {
executeAsOpenQuery = false;
}
}
DroolsQuery queryObject =
new DroolsQuery(this.queryElement.getQueryName(), args, collector, executeAsOpenQuery);
collector.setFactHandle(handle);
handle.setObject(queryObject);
leftTuple.setObject(handle); // so it can be retracted later and destroyed
return queryObject;
}
