public class NativeAnswer
- extends java.lang.Object
- Paolo Missier
Java bean used to encapsulate the results of a provenance query.
This takes the form of a nested map, see
getAnswer() for details on its structure.
|Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public java.util.Map<QueryVar,java.util.Map<java.lang.String,java.util.List<Dependencies>>> getAnswer()
- a Map of the form:
QueryVar --> ( <path> --> [
Dependencies ]) where
QueryVar denotes one of the ports in the <select> element of the input query, for example: converter:atlasSlice
- <path> is the index within the value associated to the port, for instance [1,2,3] or .
The inner Map structure accounts for multiple paths, so for example if the query asked for the provenance of elements [1,2] and [2,3] of
the value bound to converter:atlasSlice, then the inner Map structure contains two entries, one for each of the two paths.
- for each such path, the corresponding [
Dependencies] is a list of
Dependencies, each associated with one target processor and port
mentioned in the input query. For example, for path [1,2] of value bound to converter:atlasSlice, you may see the following list of Dependencies:
Each of these elements is described by a Java bean,
LineageQueryResultRecord, which represents a single provenance data record.
This means that the particular value depends on each of these other values that are mentioned in the Dependencies list.
public void setAnswer(java.util.Map<QueryVar,java.util.Map<java.lang.String,java.util.List<Dependencies>>> answer)
sets - the query answer, in the format described in