GH-5149 Rename MAX_QUERY_DOCUMENTS_KEY to MAX_DOCUMENTS_KEY and MAX_D…

…OCUMENTS_KEY to DEFAULT_NUM_DOCS_KEY

core/sail/elasticsearch/src/main/java/org/eclipse/rdf4j/sail/elasticsearch/ElasticsearchIndex.java

@@ -737,13 +737,13 @@ public SearchHits search(SearchRequestBuilder request, QueryBuilder query, int n
 		String[] types = getTypes();
 		int nDocs;
 		if (numDocs > 0) {
-			if (maxQueryDocs > 0 && maxQueryDocs < numDocs) {
-				nDocs = maxQueryDocs;
+			if (maxDocs > 0 && maxDocs < numDocs) {
+				nDocs = maxDocs;
 			} else {
 				nDocs = numDocs;
 			}
-		} else if (maxDocs > 0) {
-			nDocs = maxDocs;
+		} else if (defaultNumDocs > 0) {
+			nDocs = defaultNumDocs;
 		} else {
 			long docCount = client.prepareSearch(indexName)
 					.setTypes(types)

core/sail/lucene-api/src/main/java/org/eclipse/rdf4j/sail/lucene/AbstractSearchIndex.java

@@ -65,8 +65,8 @@ public abstract class AbstractSearchIndex implements SearchIndex {
 		REJECTED_DATATYPES.add("http://www.w3.org/2001/XMLSchema#float");
 	}
 
+	protected int defaultNumDocs;
 	protected int maxDocs;
-	protected int maxQueryDocs;
 
 	protected Set<String> wktFields = Collections.singleton(SearchFields.getPropertyField(GEO.AS_WKT));
 
@@ -76,10 +76,10 @@ public abstract class AbstractSearchIndex implements SearchIndex {
 
 	@Override
 	public void initialize(Properties parameters) throws Exception {
-		String maxDocParam = parameters.getProperty(LuceneSail.MAX_DOCUMENTS_KEY);
-		maxDocs = (maxDocParam != null) ? Integer.parseInt(maxDocParam) : -1;
-		String maxQueryDocParam = parameters.getProperty(LuceneSail.MAX_QUERY_DOCUMENTS_KEY);
-		maxQueryDocs = (maxQueryDocParam != null) ? Integer.parseInt(maxQueryDocParam) : maxDocs;
+		String maxDocumentsParam = parameters.getProperty(LuceneSail.MAX_DOCUMENTS_KEY);
+		maxDocs = (maxDocumentsParam != null) ? Integer.parseInt(maxDocumentsParam) : -1;
+		String defaultNumDocsParam = parameters.getProperty(LuceneSail.DEFAULT_NUM_DOCS_KEY);
+		defaultNumDocs = (defaultNumDocsParam != null) ? Integer.parseInt(defaultNumDocsParam) : defaultNumDocs;
 
 		String wktFieldParam = parameters.getProperty(LuceneSail.WKT_FIELDS);
 		if (wktFieldParam != null) {

core/sail/lucene-api/src/main/java/org/eclipse/rdf4j/sail/lucene/LuceneSail.java

@@ -290,18 +290,18 @@ public class LuceneSail extends NotifyingSailWrapper {
 	public static final String LUCENE_RAMDIR_KEY = "useramdir";
 
 	/**
-	 * Set the key "maxDocuments=<n>" as sail parameter to limit the maximum number of documents to return from a
-	 * search query. The default is to return all documents. NB: this may involve extra cost for some SearchIndex
+	 * Set the key "defaultNumDocs=<n>" as sail parameter to limit the maximum number of documents to return from
+	 * a search query. The default is to return all documents. NB: this may involve extra cost for some SearchIndex
 	 * implementations as they may have to determine this number.
 	 */
-	public static final String MAX_DOCUMENTS_KEY = "maxDocuments";
+	public static final String DEFAULT_NUM_DOCS_KEY = "defaultNumDocs";
 
 	/**
-	 * Set the key "maxQueryDocuments=<n>" as sail parameter to limit the maximum number of documents the user can
-	 * query at a time to return from a search query. The default is the value of the {@link #MAX_DOCUMENTS_KEY}
+	 * Set the key "maxDocuments=<n>" as sail parameter to limit the maximum number of documents the user can
+	 * query at a time to return from a search query. The default is the value of the {@link #DEFAULT_NUM_DOCS_KEY}
 	 * parameter.
 	 */
-	public static final String MAX_QUERY_DOCUMENTS_KEY = "maxQueryDocuments";
+	public static final String MAX_DOCUMENTS_KEY = "maxDocuments";
 
 	/**
 	 * Set this key to configure which fields contain WKT and should be spatially indexed. The value should be a

core/sail/lucene/src/main/java/org/eclipse/rdf4j/sail/lucene/impl/LuceneIndex.java

@@ -1006,13 +1006,13 @@ public synchronized TopDocs search(Query query) throws IOException {
 	public synchronized TopDocs search(Query query, int numDocs) throws IOException {
 		int nDocs;
 		if (numDocs > 0) {
-			if (maxQueryDocs > 0 && maxQueryDocs < numDocs) {
-				nDocs = maxQueryDocs;
+			if (maxDocs > 0 && maxDocs < numDocs) {
+				nDocs = maxDocs;
 			} else {
 				nDocs = numDocs;
 			}
-		} else if (maxDocs > 0) {
-			nDocs = maxDocs;
+		} else if (defaultNumDocs > 0) {
+			nDocs = defaultNumDocs;
 		} else {
 			nDocs = Math.max(getIndexReader().numDocs(), 1);
 		}

core/sail/solr/src/main/java/org/eclipse/rdf4j/sail/solr/SolrIndex.java

@@ -585,13 +585,13 @@ public QueryResponse search(SolrQuery query) throws SolrServerException, IOExcep
 	public QueryResponse search(SolrQuery query, int numDocs) throws SolrServerException, IOException {
 		int nDocs;
 		if (numDocs > 0) {
-			if (maxQueryDocs > 0 && maxQueryDocs < numDocs) {
-				nDocs = maxQueryDocs;
+			if (maxDocs > 0 && maxDocs < numDocs) {
+				nDocs = maxDocs;
 			} else {
 				nDocs = numDocs;
 			}
-		} else if (maxDocs > 0) {
-			nDocs = maxDocs;
+		} else if (defaultNumDocs > 0) {
+			nDocs = defaultNumDocs;
 		} else {
 			long docCount = client.query(query.setRows(0)).getResults().getNumFound();
 			nDocs = Math.max((int) Math.min(docCount, Integer.MAX_VALUE), 1);

testsuites/lucene/src/main/java/org/eclipse/testsuite/rdf4j/sail/lucene/AbstractLuceneSailTest.java

@@ -1097,10 +1097,37 @@ public void run() {
 		assertEquals(0, exceptions.size(), "Exceptions occurred during testMultithreadedAdd, see stacktraces above");
 	}
 
+	@ParameterizedTest
+	@ValueSource(ints = { 1, 2, 3 })
+	public void testDefaultNumDocsResult(int numDoc) {
+		createTestSail(lc -> lc.setParameter(LuceneSail.DEFAULT_NUM_DOCS_KEY, String.valueOf(numDoc)));
+		Repositories.consumeNoTransaction(repository, conn -> {
+			try (TupleQueryResult res = conn.prepareTupleQuery(
+					"SELECT ?Resource {\n"
+							+ "  ?Resource <" + MATCHES + "> [\n "
+							+ "    <" + QUERY + "> \"one\"\n "
+							+ "  ]. } "
+			).evaluate()) {
+				for (int k = 0; k < numDoc; k++) {
+					assertTrue(res.hasNext(), "missing result #" + k);
+					res.next();
+				}
+				if (res.hasNext()) {
+					StringBuilder b = new StringBuilder();
+					int r = 0;
+					do {
+						b.append("\n#").append(r++).append(res.next());
+					} while (res.hasNext());
+					fail("can't have more than " + numDoc + " result(s)" + b);
+				}
+			}
+		});
+	}
+
 	@ParameterizedTest
 	@ValueSource(ints = { 1, 2, 3 })
 	public void testMaxNumDocsResult(int numDoc) {
-		createTestSail(lc -> lc.setParameter(LuceneSail.MAX_QUERY_DOCUMENTS_KEY, String.valueOf(numDoc)));
+		createTestSail(lc -> lc.setParameter(LuceneSail.MAX_DOCUMENTS_KEY, String.valueOf(numDoc)));
 		Repositories.consumeNoTransaction(repository, conn -> {
 			try (TupleQueryResult res = conn.prepareTupleQuery(
 					"SELECT ?Resource {\n"