public boolean getRelation(
XRI3Segment[] contributorXris,
XRI3Segment relativeContextNodeXri,
XRI3Segment arcXri,
XRI3Segment targetContextNodeXri,
XRI3Segment contextNodeXri,
GetOperation operation,
MessageResult messageResult,
ExecutionContext executionContext)
throws Xdi2MessagingException {
MessageResult tempMessageResult = new MessageResult();
this.getContext(
contributorXris,
relativeContextNodeXri,
contextNodeXri,
operation,
tempMessageResult,
executionContext);
ContextNode tempContextNode =
tempMessageResult.getGraph().findContextNode(contextNodeXri, false);
if (tempContextNode == null) return false;
if (Variables.isVariableSingle(targetContextNodeXri)) {
Iterator<Relation> relations;
if (Variables.isVariableSingle(arcXri)) {
relations = tempContextNode.getRelations();
} else {
relations = tempContextNode.getRelations(arcXri);
}
while (relations.hasNext())
CopyUtil.copyRelation(relations.next(), messageResult.getGraph(), null);
} else {
Relation relation = tempContextNode.getRelation(arcXri, targetContextNodeXri);
if (relation == null) return false;
CopyUtil.copyRelation(relation, messageResult.getGraph(), null);
}
return false;
}
