private static void splitSources(
int dim, List<ValueSource> sources, List<ValueSource> dest1, List<ValueSource> dest2) {
// Get dim value sources for the first vector
for (int i = 0; i < dim; i++) {
dest1.add(sources.get(i));
}
// Get dim value sources for the second vector
for (int i = dim; i < sources.size(); i++) {
dest2.add(sources.get(i));
}
}
private static MVResult getMultiValueSources(List<ValueSource> sources) {
MVResult mvr = new MVResult();
if (sources.size() % 2 != 0) {
throw new SolrException(
SolrException.ErrorCode.BAD_REQUEST,
"Illegal number of sources. There must be an even number of sources");
}
if (sources.size() == 2) {
// check to see if these are MultiValueSource
boolean s1MV = sources.get(0) instanceof MultiValueSource;
boolean s2MV = sources.get(1) instanceof MultiValueSource;
if (s1MV && s2MV) {
mvr.mv1 = (MultiValueSource) sources.get(0);
mvr.mv2 = (MultiValueSource) sources.get(1);
} else if (s1MV || s2MV) {
// if one is a MultiValueSource, than the other one needs to be too.
throw new SolrException(
SolrException.ErrorCode.BAD_REQUEST,
"Illegal number of sources. There must be an even number of sources");
} else {
mvr.mv1 = new VectorValueSource(Collections.singletonList(sources.get(0)));
mvr.mv2 = new VectorValueSource(Collections.singletonList(sources.get(1)));
}
} else {
int dim = sources.size() / 2;
List<ValueSource> sources1 = new ArrayList<>(dim);
List<ValueSource> sources2 = new ArrayList<>(dim);
// Get dim value sources for the first vector
splitSources(dim, sources, sources1, sources2);
mvr.mv1 = new VectorValueSource(sources1);
mvr.mv2 = new VectorValueSource(sources2);
}
return mvr;
}