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README.md

@@ -204,7 +204,7 @@ when you're creating threads, or working with Java 8 streams and gatherers, you'
 
 Fun fact: lambdas were first introduced in 2014's Java 8 release. (Yes, that was a _decade_ ago! People were doing the ice bucket challenges, the world was obsessed with selfie sticks, _Froezen_, and _Flappy Bird_.) 
 
-The `RowMapper<T>` contract in spring's jdbc suport is very interesting. It makes the point very nicely: 
+The `RowMapper<T>` contract in spring's jdbc support is very interesting. It makes the point very nicely: 
 
 
 

pom.xml

@@ -17,10 +17,16 @@
  <java.version>22</java.version>
  </properties>
  <dependencies>
+
  <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-jdbc</artifactId>
  </dependency>
+ <dependency>
+ <groupId>com.h2database</groupId>
+ <artifactId>h2</artifactId>
+ <scope>runtime</scope>
+ </dependency>
  <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter</artifactId>

src/main/java/com/example/demo/AnonymousLambdaParameters.java

@@ -0,0 +1,28 @@
+package com.example.demo;
+
+import org.springframework.jdbc.core.simple.JdbcClient;
+import org.springframework.stereotype.Component;
+
+import javax.sql.DataSource;
+
+@Component
+class AnonymousLambdaParameters implements LanguageDemonstrationRunner {
+
+ private final JdbcClient db;
+
+ AnonymousLambdaParameters(DataSource db) {
+ this.db = JdbcClient.create(db);
+ }
+
+ record Customer(Integer id, String name) {
+ }
+
+ @Override
+ public void run() throws Throwable {
+ var allCustomers = this.db.sql("select * from customer ")
+ .query((rs, _) -> new Customer(rs.getInt("id"), rs.getString("name")))
+ .list();
+ System.out.println("all: " + allCustomers);
+ }
+
+}

src/main/resources/application.properties

@@ -1,2 +1,3 @@
 spring.application.name=demo
-spring.threads.virtual.enabled=true
+spring.threads.virtual.enabled=true
+spring.sql.init.mode=always

src/main/resources/data.sql

@@ -0,0 +1,9 @@
+insert into customer(name ) values ('Brian');
+insert into customer(name ) values ('Thomas');
+insert into customer(name ) values ('Alina');
+insert into customer(name ) values ('Stuart');
+insert into customer(name ) values ('Sharat');
+insert into customer(name ) values ('James');
+insert into customer(name ) values ('Ron');
+insert into customer(name ) values ('Billy');
+insert into customer(name ) values ('Heather');

src/main/resources/schema.sql

@@ -0,0 +1,5 @@
+create table if not exists customer
+(
+ id serial primary key,
+ name text not null
+);