Cleanup dead code in o.e.search and o.e.a.search (#124445)

Just some obvious cleanups for stuff that became unused as of late.

server/src/main/java/org/elasticsearch/action/search/CCSSingleCoordinatorSearchProgressListener.java

@@ -188,7 +188,7 @@ public class CCSSingleCoordinatorSearchProgressListener extends SearchProgressLi
 
         for (Map.Entry<String, Integer> entry : totalByClusterAlias.entrySet()) {
             String clusterAlias = entry.getKey();
-            int successfulCount = entry.getValue().intValue();
+            int successfulCount = entry.getValue();
 
             clusters.swapCluster(clusterAlias, (k, v) -> {
                 SearchResponse.Cluster.Status status = v.getStatus();
@@ -231,7 +231,7 @@ public class CCSSingleCoordinatorSearchProgressListener extends SearchProgressLi
 
         for (Map.Entry<String, Integer> entry : totalByClusterAlias.entrySet()) {
             String clusterAlias = entry.getKey();
-            int successfulCount = entry.getValue().intValue();
+            int successfulCount = entry.getValue();
 
             clusters.swapCluster(clusterAlias, (k, v) -> {
                 SearchResponse.Cluster.Status status = v.getStatus();

server/src/main/java/org/elasticsearch/action/search/CountOnlyQueryPhaseResultConsumer.java

@@ -27,8 +27,8 @@ import java.util.stream.Stream;
  * store any other information.
  */
 class CountOnlyQueryPhaseResultConsumer extends SearchPhaseResults<SearchPhaseResult> {
-    AtomicReference<TotalHits.Relation> relationAtomicReference = new AtomicReference<>(TotalHits.Relation.EQUAL_TO);
-    LongAdder totalHits = new LongAdder();
+    final AtomicReference<TotalHits.Relation> relationAtomicReference = new AtomicReference<>(TotalHits.Relation.EQUAL_TO);
+    final LongAdder totalHits = new LongAdder();
 
     private final AtomicBoolean terminatedEarly = new AtomicBoolean(false);
     private final AtomicBoolean timedOut = new AtomicBoolean(false);

server/src/main/java/org/elasticsearch/action/search/SearchRequestBuilder.java

@@ -121,14 +121,6 @@ public class SearchRequestBuilder extends ActionRequestBuilder<SearchRequest, Se
         return this;
     }
 
-    /**
-     * Set the timeout for the {@link #setWaitForCheckpoints(Map)} request.
-     */
-    public SearchRequestBuilder setWaitForCheckpointsTimeout(final TimeValue waitForCheckpointsTimeout) {
-        request.setWaitForCheckpointsTimeout(waitForCheckpointsTimeout);
-        return this;
-    }
-
     /**
      * Specifies what type of requested indices to ignore and wildcard indices expressions.
      * <p>

server/src/main/java/org/elasticsearch/action/search/SearchResponse.java

@@ -786,7 +786,7 @@ public class SearchResponse extends ActionResponse implements ChunkedToXContentO
          * for tracking search Cluster details.
          */
         public boolean hasClusterObjects() {
-            return clusterInfo.keySet().size() > 0;
+            return clusterInfo.isEmpty() == false;
         }
 
         /**
@@ -855,27 +855,6 @@ public class SearchResponse extends ActionResponse implements ChunkedToXContentO
             this(clusterAlias, indexExpression, skipUnavailable, Status.RUNNING, null, null, null, null, null, null, false);
         }
 
-        /**
-         * Create a Cluster with a new Status and one or more ShardSearchFailures. This constructor
-         * should only be used for fatal failures where shard counters (total, successful, skipped, failed)
-         * are not known (unset).
-         * @param clusterAlias clusterAlias as defined in the remote cluster settings or RemoteClusterAware.LOCAL_CLUSTER_GROUP_KEY
-         *                     for the local cluster
-         * @param indexExpression the original (not resolved/concrete) indices expression provided for this cluster.
-         * @param skipUnavailable whether cluster is marked as skip_unavailable in remote cluster settings
-         * @param status current status of the search on this Cluster
-         * @param failures list of failures that occurred during the search on this Cluster
-         */
-        public Cluster(
-            String clusterAlias,
-            String indexExpression,
-            boolean skipUnavailable,
-            Status status,
-            List<ShardSearchFailure> failures
-        ) {
-            this(clusterAlias, indexExpression, skipUnavailable, status, null, null, null, null, failures, null, false);
-        }
-
         public Cluster(
             String clusterAlias,
             String indexExpression,
@@ -1034,7 +1013,7 @@ public class SearchResponse extends ActionResponse implements ChunkedToXContentO
         @Override
         public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
             String name = clusterAlias;
-            if (clusterAlias.equals("")) {
+            if (clusterAlias.isEmpty()) {
                 name = LOCAL_CLUSTER_NAME_REPRESENTATION;
             }
             builder.startObject(name);

server/src/main/java/org/elasticsearch/search/aggregations/bucket/range/InternalDateRange.java

@@ -10,7 +10,6 @@ package org.elasticsearch.search.aggregations.bucket.range;
 
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.search.DocValueFormat;
-import org.elasticsearch.search.aggregations.InternalAggregation;
 import org.elasticsearch.search.aggregations.InternalAggregations;
 
 import java.io.IOException;
@@ -25,10 +24,6 @@ public class InternalDateRange extends InternalRange<InternalDateRange.Bucket, I
 
     public static class Bucket extends InternalRange.Bucket {
 
-        public Bucket(String key, double from, double to, long docCount, List<InternalAggregation> aggregations, DocValueFormat formatter) {
-            super(key, from, to, docCount, InternalAggregations.from(aggregations), formatter);
-        }
-
         public Bucket(String key, double from, double to, long docCount, InternalAggregations aggregations, DocValueFormat formatter) {
             super(key, from, to, docCount, aggregations, formatter);
         }

server/src/main/java/org/elasticsearch/search/builder/PointInTimeBuilder.java

@@ -124,14 +124,6 @@ public final class PointInTimeBuilder implements Writeable, ToXContentFragment {
         return this;
     }
 
-    /**
-     * If specified, the search layer will keep this point in time around for at least the given keep-alive.
-     * Otherwise, the point in time will be kept around until the original keep alive elapsed.
-     */
-    public PointInTimeBuilder setKeepAlive(String keepAlive) {
-        return setKeepAlive(TimeValue.parseTimeValue(keepAlive, "keep_alive"));
-    }
-
     @Nullable
     public TimeValue getKeepAlive() {
         return keepAlive;

server/src/main/java/org/elasticsearch/search/fetch/FetchContext.java

@@ -10,7 +10,6 @@
 package org.elasticsearch.search.fetch;
 
 import org.apache.lucene.search.Query;
-import org.elasticsearch.index.cache.bitset.BitsetFilterCache;
 import org.elasticsearch.index.mapper.SourceFieldMapper;
 import org.elasticsearch.index.mapper.SourceLoader;
 import org.elasticsearch.index.query.ParsedQuery;
@@ -88,10 +87,6 @@ public class FetchContext {
         return sfc;
     }
 
-    public BitsetFilterCache bitsetFilterCache() {
-        return searchContext.bitsetFilterCache();
-    }
-
     /**
      * The name of the index that documents are being fetched from
      */

server/src/main/java/org/elasticsearch/search/fetch/subphase/highlight/HighlightBuilder.java

@@ -327,17 +327,6 @@ public final class HighlightBuilder extends AbstractHighlighterBuilder<Highlight
         }
     }
 
-    static Character[] convertCharArray(char[] array) {
-        if (array == null) {
-            return null;
-        }
-        Character[] charArray = new Character[array.length];
-        for (int i = 0; i < array.length; i++) {
-            charArray[i] = array[i];
-        }
-        return charArray;
-    }
-
     @Override
     public void innerXContent(XContentBuilder builder) throws IOException {
         // first write common options

server/src/main/java/org/elasticsearch/search/retriever/KnnRetrieverBuilder.java

@@ -96,7 +96,7 @@ public final class KnnRetrieverBuilder extends RetrieverBuilder {
             RESCORE_VECTOR_FIELD,
             ObjectParser.ValueType.OBJECT
         );
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static KnnRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {

server/src/main/java/org/elasticsearch/search/retriever/RescorerRetrieverBuilder.java

@@ -64,7 +64,7 @@ public final class RescorerRetrieverBuilder extends CompoundRetrieverBuilder<Res
                 );
             }
         }, RESCORE_FIELD, ObjectParser.ValueType.OBJECT_ARRAY);
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static RescorerRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {

server/src/main/java/org/elasticsearch/search/retriever/RetrieverBuilder.java

@@ -55,10 +55,7 @@ public abstract class RetrieverBuilder implements Rewriteable<RetrieverBuilder>,
 
     public static final ParseField NAME_FIELD = new ParseField("_name");
 
-    protected static void declareBaseParserFields(
-        String name,
-        AbstractObjectParser<? extends RetrieverBuilder, RetrieverParserContext> parser
-    ) {
+    protected static void declareBaseParserFields(AbstractObjectParser<? extends RetrieverBuilder, RetrieverParserContext> parser) {
         parser.declareObjectArray(
             (r, v) -> r.preFilterQueryBuilders = new ArrayList<>(v),
             (p, c) -> AbstractQueryBuilder.parseTopLevelQuery(p, c::trackQueryUsage),

server/src/main/java/org/elasticsearch/search/retriever/StandardRetrieverBuilder.java

@@ -74,7 +74,7 @@ public final class StandardRetrieverBuilder extends RetrieverBuilder implements
             COLLAPSE_FIELD,
             ObjectParser.ValueType.OBJECT
         );
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static StandardRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {

server/src/main/java/org/elasticsearch/search/suggest/phrase/WordScorer.java

@@ -9,7 +9,6 @@
 package org.elasticsearch.search.suggest.phrase;
 
 import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.index.MultiTerms;
 import org.apache.lucene.index.Terms;
 import org.apache.lucene.index.TermsEnum;
 import org.apache.lucene.util.BytesRef;
@@ -30,10 +29,6 @@ public abstract class WordScorer {
     private final TermsEnum termsEnum;
     private final boolean useTotalTermFreq;
 
-    public WordScorer(IndexReader reader, String field, double realWordLikelihood, BytesRef separator) throws IOException {
-        this(reader, MultiTerms.getTerms(reader, field), field, realWordLikelihood, separator);
-    }
-
     public WordScorer(IndexReader reader, Terms terms, String field, double realWordLikelihood, BytesRef separator) throws IOException {
         if (terms == null) {
             throw new IllegalArgumentException("Field: [" + field + "] does not exist");

x-pack/plugin/ent-search/src/main/java/org/elasticsearch/xpack/application/rules/retriever/QueryRuleRetrieverBuilder.java

@@ -70,7 +70,7 @@ public final class QueryRuleRetrieverBuilder extends CompoundRetrieverBuilder<Qu
             return innerRetriever;
         }, RETRIEVER_FIELD);
         PARSER.declareInt(optionalConstructorArg(), RANK_WINDOW_SIZE_FIELD);
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static QueryRuleRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/rank/random/RandomRankRetrieverBuilder.java

@@ -56,7 +56,7 @@ public class RandomRankRetrieverBuilder extends RetrieverBuilder {
         PARSER.declareInt(optionalConstructorArg(), RANK_WINDOW_SIZE_FIELD);
         PARSER.declareInt(optionalConstructorArg(), SEED_FIELD);
 
-        RetrieverBuilder.declareBaseParserFields(RandomRankBuilder.NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static RandomRankRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {

x-pack/plugin/inference/src/main/java/org/elasticsearch/xpack/inference/rank/textsimilarity/TextSimilarityRankRetrieverBuilder.java

@@ -77,7 +77,7 @@ public class TextSimilarityRankRetrieverBuilder extends CompoundRetrieverBuilder
         PARSER.declareInt(optionalConstructorArg(), RANK_WINDOW_SIZE_FIELD);
         PARSER.declareBoolean(optionalConstructorArg(), FAILURES_ALLOWED_FIELD);
 
-        RetrieverBuilder.declareBaseParserFields(TextSimilarityRankBuilder.NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static TextSimilarityRankRetrieverBuilder fromXContent(

x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/linear/LinearRetrieverBuilder.java

@@ -79,7 +79,7 @@ public final class LinearRetrieverBuilder extends CompoundRetrieverBuilder<Linea
     static {
         PARSER.declareObjectArray(constructorArg(), LinearRetrieverComponent::fromXContent, RETRIEVERS_FIELD);
         PARSER.declareInt(optionalConstructorArg(), RANK_WINDOW_SIZE_FIELD);
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     private static float[] getDefaultWeight(int size) {

x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/rrf/RRFRetrieverBuilder.java

@@ -71,7 +71,7 @@ public final class RRFRetrieverBuilder extends CompoundRetrieverBuilder<RRFRetri
         }, RETRIEVERS_FIELD);
         PARSER.declareInt(optionalConstructorArg(), RANK_WINDOW_SIZE_FIELD);
         PARSER.declareInt(optionalConstructorArg(), RANK_CONSTANT_FIELD);
-        RetrieverBuilder.declareBaseParserFields(NAME, PARSER);
+        RetrieverBuilder.declareBaseParserFields(PARSER);
     }
 
     public static RRFRetrieverBuilder fromXContent(XContentParser parser, RetrieverParserContext context) throws IOException {