Implement query transformer to emulate for ordered set aggregate functions through their window variants

Author: beikov

hibernate-core/src/main/java/org/hibernate/dialect/AbstractHANADialect.java

@@ -313,7 +313,7 @@ public void initializeFunctionRegistry(QueryEngine queryEngine) {
 
 		functionFactory.listagg_stringAgg( "varchar" );
 		functionFactory.inverseDistributionOrderedSetAggregates();
-		functionFactory.hypotheticalOrderedSetAggregates();
+		functionFactory.hypotheticalOrderedSetAggregates_windowEmulation();
 
 		queryEngine.getSqmFunctionRegistry().register( "timestampadd",
 				new IntegralTimestampaddFunction( this, queryEngine.getTypeConfiguration() ) );

hibernate-core/src/main/java/org/hibernate/dialect/DB2Dialect.java

@@ -267,7 +267,7 @@ public void initializeFunctionRegistry(QueryEngine queryEngine) {
 			functionFactory.listagg( null );
 			if ( getDB2Version().isSameOrAfter( 11, 1 ) ) {
 				functionFactory.inverseDistributionOrderedSetAggregates();
-				functionFactory.hypotheticalOrderedSetAggregates();
+				functionFactory.hypotheticalOrderedSetAggregates_windowEmulation();
 			}
 		}
 	}

hibernate-core/src/main/java/org/hibernate/dialect/DB2iDialect.java

@@ -49,7 +49,7 @@ public void initializeFunctionRegistry(QueryEngine queryEngine) {
 			CommonFunctionFactory functionFactory = new CommonFunctionFactory(queryEngine);
 			functionFactory.listagg( null );
 			functionFactory.inverseDistributionOrderedSetAggregates();
-			functionFactory.hypotheticalOrderedSetAggregates();
+			functionFactory.hypotheticalOrderedSetAggregates_windowEmulation();
 		}
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/DB2zDialect.java

@@ -60,7 +60,7 @@ public void initializeFunctionRegistry(QueryEngine queryEngine) {
 			CommonFunctionFactory functionFactory = new CommonFunctionFactory(queryEngine);
 			functionFactory.listagg( null );
 			functionFactory.inverseDistributionOrderedSetAggregates();
-			functionFactory.hypotheticalOrderedSetAggregates();
+			functionFactory.hypotheticalOrderedSetAggregates_windowEmulation();
 		}
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/OracleSqlAstTranslator.java

@@ -330,7 +330,7 @@ protected void renderRowNumber(SelectClause selectClause, QueryPart queryPart) {
 	}
 
 	@Override
-	public void visitOver(Over over) {
+	public void visitOver(Over<?> over) {
 		final Expression expression = over.getExpression();
 		if ( expression instanceof FunctionExpression && "row_number".equals( ( (FunctionExpression) expression ).getFunctionName() ) ) {
 			if ( over.getPartitions().isEmpty() && over.getOrderList().isEmpty()

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java

@@ -267,8 +267,8 @@ public void initializeFunctionRegistry(QueryEngine queryEngine) {
 					.setParameterTypes(INTEGER)
 					.register();
 		}
-		functionFactory.inverseDistributionOrderedSetAggregates();
-		functionFactory.hypotheticalOrderedSetAggregates();
+		functionFactory.inverseDistributionOrderedSetAggregates_windowEmulation();
+		functionFactory.hypotheticalOrderedSetAggregates_windowEmulation();
 		if ( getVersion().isSameOrAfter( 14 ) ) {
 			functionFactory.listagg_stringAggWithinGroup( "varchar(max)" );
 		}