GH-5718: remove deprecated FedX constructs and classes

Remove the deprecated FedX constructs that were scheduled for removal
earlier. The functional code has been replaced with optimized variants
earlier, some testing constructs can be simply removed without
replacements.

Author: aschwarte10

tools/federation/src/main/java/org/eclipse/rdf4j/federated/FedXConfig.java

@@ -496,20 +496,4 @@ public FedXConfig withConsumingIterationMax(int max) {
 	public int getConsumingIterationMax() {
 		return consumingIterationMax;
 	}
-
-	/**
-	 * Set the CollectionFactory to be used by the federation
-	 *
-	 * <p>
-	 * Can only be set before federation initialization.
-	 * </p>
-	 *
-	 * @param cf
-	 * @return the current config
-	 * @deprecated unusedO
-	 */
-	@Deprecated(forRemoval = true)
-	public FedXConfig withCollectionFactory(CollectionFactory cf) {
-		return this;
-	}
 }

tools/federation/src/main/java/org/eclipse/rdf4j/federated/api/FedXApi.java

@@ -996,21 +996,6 @@ protected QueryEvaluationStep prepareExclusiveTupleExpr(
 	public abstract CloseableIteration<BindingSet> evaluateBoundJoinStatementPattern(
 			StatementTupleExpr stmt, final List<BindingSet> bindings) throws QueryEvaluationException;
 
-	/**
-	 * Perform a grouped check at the relevant endpoints, i.e. for a group of bindings keep only those for which at
-	 * least one endpoint provides a result to the bound statement.
-	 *
-	 * @param stmt
-	 * @param bindings
-	 * @return the result iteration
-	 * @throws QueryEvaluationException
-	 * @deprecated with VALUES implementation, control flow goes via
-	 *             {@link #evaluateBoundJoinStatementPattern(StatementTupleExpr, List)}
-	 */
-	@Deprecated(forRemoval = true)
-	public abstract CloseableIteration<BindingSet> evaluateGroupedCheck(
-			CheckStatementPattern stmt, final List<BindingSet> bindings) throws QueryEvaluationException;
-
 	/**
 	 * Evaluate the left bind join for the given {@link StatementTupleExpr} and bindings at the relevant endpoints.
 	 *

tools/federation/src/main/java/org/eclipse/rdf4j/federated/evaluation/FederationEvalStrategy.java

@@ -91,22 +91,6 @@ public CloseableIteration<BindingSet> evaluateBoundJoinStatementPattern(
 		return result;
 	}
 
-	@Override
-	public CloseableIteration<BindingSet> evaluateGroupedCheck(
-			CheckStatementPattern stmt, List<BindingSet> bindings)
-			throws QueryEvaluationException {
-
-		if (bindings.size() == 1) {
-			return stmt.evaluate(bindings.get(0));
-		}
-
-		TupleExpr preparedQuery = QueryAlgebraUtil.selectQueryStringBoundCheck(stmt.getStatementPattern(), bindings);
-
-		CloseableIteration<BindingSet> result = evaluateAtStatementSources(preparedQuery,
-				stmt.getStatementSources(), stmt.getQueryInfo());
-
-		return new GroupedCheckConversionIteration(result, bindings);
-	}
 
 	@Override
 	public CloseableIteration<BindingSet> executeJoin(

tools/federation/src/main/java/org/eclipse/rdf4j/federated/evaluation/SailFederationEvalStrategy.java

@@ -116,64 +116,6 @@ public CloseableIteration<BindingSet> evaluateBoundJoinStatementPattern(
 		}
 	}
 
-	/**
-	 * Alternative evaluation implementation using UNION. Nowadays we use a VALUES clause based implementation
-	 *
-	 * @deprecated no longer used
-	 */
-	@Deprecated(forRemoval = true)
-	protected CloseableIteration<BindingSet> evaluateBoundJoinStatementPattern_UNION(
-			StatementTupleExpr stmt, List<BindingSet> bindings)
-			throws QueryEvaluationException {
-
-		// we can omit the bound join handling
-		if (bindings.size() == 1) {
-			return evaluate(stmt, bindings.get(0));
-		}
-
-		FilterValueExpr filterExpr = null;
-		if (stmt instanceof FilterTuple) {
-			filterExpr = ((FilterTuple) stmt).getFilterExpr();
-		}
-
-		Boolean isEvaluated = false;
-		String preparedQuery = QueryStringUtil.selectQueryStringBoundUnion((StatementPattern) stmt, bindings,
-				filterExpr, isEvaluated, stmt.getQueryInfo().getDataset());
-
-		CloseableIteration<BindingSet> result = evaluateAtStatementSources(preparedQuery,
-				stmt.getStatementSources(), stmt.getQueryInfo());
-
-		// apply filter and/or convert to original bindings
-		if (filterExpr != null && !isEvaluated) {
-			result = new BoundJoinConversionIteration(result, bindings); // apply conversion
-			result = new FilteringIteration(filterExpr, result, this); // apply filter
-			if (!result.hasNext()) {
-				return new EmptyIteration<>();
-			}
-		} else {
-			result = new BoundJoinConversionIteration(result, bindings);
-		}
-
-		return result;
-	}
-
-	@Override
-	public CloseableIteration<BindingSet> evaluateGroupedCheck(
-			CheckStatementPattern stmt, List<BindingSet> bindings)
-			throws QueryEvaluationException {
-
-		if (bindings.size() == 1) {
-			return stmt.evaluate(bindings.get(0));
-		}
-
-		String preparedQuery = QueryStringUtil.selectQueryStringBoundCheck(stmt.getStatementPattern(), bindings,
-				stmt.getQueryInfo().getDataset());
-
-		CloseableIteration<BindingSet> result = evaluateAtStatementSources(preparedQuery,
-				stmt.getStatementSources(), stmt.getQueryInfo());
-
-		return new GroupedCheckConversionIteration(result, bindings);
-	}
 
 	@Override
 	public CloseableIteration<BindingSet> executeJoin(

tools/federation/src/main/java/org/eclipse/rdf4j/federated/evaluation/SparqlFederationEvalStrategy.java

@@ -117,10 +117,6 @@ public int getTotalNumberOfWorkers() {
 		return nWorkers;
 	}
 
-	@Deprecated(forRemoval = true, since = "5.1") // currently unused and this class is internal
-	public int getNumberOfTasks() {
-		return _taskQueue.size();
-	}
 
 	/**
 	 * Create the {@link BlockingQueue} used for the thread pool. The default implementation creates a