Polish pattern matching usage

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/IterableOfEntryToMapConverter.java

@@ -41,12 +41,12 @@ class IterableOfEntryToMapConverter implements ConditionalConverter, Converter<I
 
 		source.forEach(element -> {
 
-			if (!(element instanceof Entry)) {
-				throw new IllegalArgumentException(String.format("Cannot convert %s to Map.Entry", element.getClass()));
+			if (element instanceof Entry entry) {
+				result.put(entry.getKey(), entry.getValue());
+				return;
 			}
 
-			Entry entry = (Entry) element;
-			result.put(entry.getKey(), entry.getValue());
+			throw new IllegalArgumentException(String.format("Cannot convert %s to Map.Entry", element.getClass()));
 		});
 
 		return result;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/QueryMapper.java

@@ -296,7 +296,7 @@ private Condition mapCondition(CriteriaDefinition criteria, MapSqlParameterSourc
 				&& metadataBackedField.property != null //
 				&& (criteria.getValue() == null || !criteria.getValue().getClass().isArray())) {
 
-			RelationalPersistentProperty property = ((MetadataBackedField) propertyField).property;
+			RelationalPersistentProperty property = metadataBackedField.property;
 			JdbcValue jdbcValue = convertToJdbcValue(property, criteria.getValue());
 			mappedValue = jdbcValue.getValue();
 			sqlType = jdbcValue.getJdbcType() != null ? jdbcValue.getJdbcType() : propertyField.getSqlType();

spring-data-r2dbc/src/main/java/org/springframework/data/r2dbc/core/DefaultStatementMapper.java

@@ -172,8 +172,7 @@ private PreparedOperation<Insert> getMappedObject(InsertSpec insertSpec,
 
 		for (Assignment assignment : boundAssignments.getAssignments()) {
 
-			if (assignment instanceof AssignValue) {
-				AssignValue assignValue = (AssignValue) assignment;
+			if (assignment instanceof AssignValue assignValue) {
 
 				insertBuilder.column(assignValue.getColumn());
 				withBuild = insertBuilder.value(assignValue.getValue());

spring-data-r2dbc/src/main/java/org/springframework/data/r2dbc/core/NamedParameterUtils.java

@@ -384,11 +384,11 @@ int getEndIndex() {
 		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
-			if (!(o instanceof ParameterHolder))
-				return false;
-			ParameterHolder that = (ParameterHolder) o;
-			return this.startIndex == that.startIndex && this.endIndex == that.endIndex
+			if (o instanceof ParameterHolder that) {
+				return this.startIndex == that.startIndex && this.endIndex == that.endIndex
 					&& Objects.equals(this.parameterName, that.parameterName);
+			}
+			return false;
 		}
 
 		@Override

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/render/SelectStatementVisitor.java

@@ -101,9 +101,7 @@ public Delegation doEnter(Visitable segment) {
 	@Override
 	public Delegation doLeave(Visitable segment) {
 
-		if (segment instanceof Select) {
-
-			Select select = (Select) segment;
+		if (segment instanceof Select select) {
 
 			builder.append("SELECT ");