Check if accessible

src/main/java/it/cavallium/dbengine/lucene/searcher/CountMultiSearcher.java

@@ -73,9 +73,13 @@ public class CountMultiSearcher implements MultiSearcher {
 
 				return new LuceneSearchResult(totalHitsCount, mergedFluxes, () -> {
 					for (LuceneSearchResult luceneSearchResult : resultsToDrop) {
-						luceneSearchResult.close();
+						if (luceneSearchResult.isAccessible()) {
+							luceneSearchResult.close();
+						}
+					}
+					if (indexSearchers.isAccessible()) {
+						indexSearchers.close();
 					}
-					indexSearchers.close();
 				});
 			});
 		}, false));

src/main/java/it/cavallium/dbengine/lucene/searcher/PagedLocalSearcher.java

@@ -54,8 +54,16 @@ public class PagedLocalSearcher implements LocalSearcher {
 					.transform(firstPageTopDocsMono -> this.computeFirstPageResults(firstPageTopDocsMono, indexSearchers.shards(),
 							keyFieldName, queryParams2))
 					// Compute other results
-					.transform(firstResult -> this.computeOtherResults(firstResult, indexSearchers.shards(), queryParams2,
+					.transform(firstResult -> this.computeOtherResults(firstResult,
-							keyFieldName, indexSearchers::close))
+							indexSearchers.shards(),
+							queryParams2,
+							keyFieldName,
+							() -> {
+								if (indexSearchers.isAccessible()) {
+									indexSearchers.close();
+								}
+							}
+					))
 					// Ensure that one LuceneSearchResult is always returned
 					.single()
 			);

src/main/java/it/cavallium/dbengine/lucene/searcher/ScoredPagedMultiSearcher.java

@@ -62,8 +62,16 @@ public class ScoredPagedMultiSearcher implements MultiSearcher {
 							.transform(firstPageTopDocsMono -> this.computeFirstPageResults(firstPageTopDocsMono, indexSearchers,
 									keyFieldName, queryParams2))
 							// Compute other results
-							.map(firstResult -> this.computeOtherResults(firstResult, indexSearchers.shards(),
+							.map(firstResult -> this.computeOtherResults(firstResult,
-									queryParams2, keyFieldName, indexSearchers::close))
+									indexSearchers.shards(),
+									queryParams2,
+									keyFieldName,
+									() -> {
+										if (indexSearchers.isAccessible()) {
+											indexSearchers.close();
+										}
+									}
+							))
 							// Ensure that one LuceneSearchResult is always returned
 							.single(),
 					false);

src/main/java/it/cavallium/dbengine/lucene/searcher/SortedByScoreFullMultiSearcher.java

@@ -127,7 +127,9 @@ public class SortedByScoreFullMultiSearcher implements MultiSearcher {
 					.take(queryParams.limitLong(), true);
 
 			return new LuceneSearchResult(totalHitsCount, hitsFlux, () -> {
-				indexSearchers.close();
+				if (indexSearchers.isAccessible()) {
+					indexSearchers.close();
+				}
 				try {
 					data.close();
 				} catch (Exception e) {

src/main/java/it/cavallium/dbengine/lucene/searcher/SortedScoredFullMultiSearcher.java

@@ -121,7 +121,9 @@ public class SortedScoredFullMultiSearcher implements MultiSearcher {
 					.take(queryParams.limitLong(), true);
 
 			return new LuceneSearchResult(totalHitsCount, hitsFlux, () -> {
-				indexSearchers.close();
+				if (indexSearchers.isAccessible()) {
+					indexSearchers.close();
+				}
 				data.close();
 			});
 		});

src/main/java/it/cavallium/dbengine/lucene/searcher/StandardSearcher.java

@@ -143,7 +143,11 @@ public class StandardSearcher implements MultiSearcher {
 					.skip(queryParams.offsetLong())
 					.take(queryParams.limitLong(), true);
 
-			return new LuceneSearchResult(totalHitsCount, hitsFlux, indexSearchers::close);
+			return new LuceneSearchResult(totalHitsCount, hitsFlux, () -> {
+				if (indexSearchers.isAccessible()) {
+					indexSearchers.close();
+				}
+			});
 		});
 	}
 

src/main/java/it/cavallium/dbengine/lucene/searcher/UnsortedStreamingMultiSearcher.java

@@ -53,7 +53,11 @@ public class UnsortedStreamingMultiSearcher implements MultiSearcher {
 						.skip(queryParams2.offsetLong())
 						.take(queryParams2.limitLong(), true);
 
-				return new LuceneSearchResult(totalHitsCount, mergedFluxes, indexSearchers::close);
+				return new LuceneSearchResult(totalHitsCount, mergedFluxes, () -> {
+					if (indexSearchers.isAccessible()) {
+						indexSearchers.close();
+					}
+				});
 			});
 		}, false);
 	}

src/test/java/it/cavallium/dbengine/UnsortedUnscoredSimpleMultiSearcher.java

@@ -74,9 +74,13 @@ public class UnsortedUnscoredSimpleMultiSearcher implements MultiSearcher {
 
 									return new LuceneSearchResult(totalHitsCount, mergedFluxes, () -> {
 										for (LuceneSearchResult luceneSearchResult : resultsToDrop) {
-											luceneSearchResult.close();
+											if (luceneSearchResult.isAccessible()) {
+												luceneSearchResult.close();
+											}
+										}
+										if (indexSearchers.isAccessible()) {
+											indexSearchers.close();
 										}
-										indexSearchers.close();
 									});
 								})
 								.doFirst(() -> {