@Test
public void testThatTermIsRemovedIfThereASecondDMQWithoutTheTerm() throws Exception {
RulesCollectionBuilder builder = new TrieMapRulesCollectionBuilder(false);
DeleteInstruction delete = new DeleteInstruction(Arrays.asList(mkTerm("a")));
builder.addRule(
new Input(Arrays.asList(mkTerm("a")), false, false),
new Instructions(Arrays.asList((Instruction) delete)));
RulesCollection rules = builder.build();
CommonRulesRewriter rewriter = new CommonRulesRewriter(rules);
Query rewritten = rewriter.rewrite(makeQuery("a b"), EMPTY_CONTEXT).getUserQuery();
assertThat(rewritten, bq(dmq(term("b"))));
}
@Test
public void testThatNothingIsDeletedIfWeWouldEndUpWithAnEmptyQuery() {
RulesCollectionBuilder builder = new TrieMapRulesCollectionBuilder(false);
DeleteInstruction delete = new DeleteInstruction(Arrays.asList(mkTerm("a")));
builder.addRule(
new Input(Arrays.asList(mkTerm("a")), false, false),
new Instructions(Arrays.asList((Instruction) delete)));
RulesCollection rules = builder.build();
CommonRulesRewriter rewriter = new CommonRulesRewriter(rules);
ExpandedQuery query = makeQuery("a");
Query rewritten = rewriter.rewrite(query, EMPTY_CONTEXT).getUserQuery();
assertThat(rewritten, bq(dmq(term("a"))));
}
@Test
public void testThatTermIsRemovedIfThereIsAnotherTermInTheSameDMQ() throws Exception {
RulesCollectionBuilder builder = new TrieMapRulesCollectionBuilder(false);
DeleteInstruction delete = new DeleteInstruction(Arrays.asList(mkTerm("a")));
builder.addRule(
new Input(Arrays.asList(mkTerm("a")), false, false),
new Instructions(Arrays.asList((Instruction) delete)));
RulesCollection rules = builder.build();
CommonRulesRewriter rewriter = new CommonRulesRewriter(rules);
ExpandedQuery expandedQuery = makeQuery("a");
Query query = expandedQuery.getUserQuery();
DisjunctionMaxQuery dmq = query.getClauses(DisjunctionMaxQuery.class).get(0);
querqy.model.Term termB = new querqy.model.Term(dmq, null, "b");
dmq.addClause(termB);
Query rewritten = rewriter.rewrite(expandedQuery, EMPTY_CONTEXT).getUserQuery();
assertThat(rewritten, bq(dmq(term("b"))));
}