Add readme

Author: jjspiegel

JdbcExamples/SpringDataJdbc/README.md

@@ -0,0 +1,16 @@
+This directory contains a Spring Data JDBC example that uses JSON in Oracle Database to persist a sub-object.
+
+The following table:
+
+```
+ create table movie (
+ id number default movieidsequence.NEXTVAL primary key,
+ name varchar2(100),
+ details JSON 
+ )
+```
+Stores instances of the class [Movie](src/main/java/movie/springjdbc/model/Movie.java).
+The nested class [MovieDetails](src/main/java/movie/springjdbc/model/MovieDetails.java)
+is stored within the details column as JSON.
+
+JSON-B (jakarta.json.bind) is used to automatically convert the MovieDetails instances directly to from OSON in [Config.java](src/main/java/movie/springjdbc/Config.java).

JdbcExamples/SpringDataJdbc/src/main/java/movie/springjdbc/Config.java

@@ -34,10 +34,8 @@ public class Config extends AbstractJdbcConfiguration {
  @Bean
  DataSource dataSource() throws SQLException {
  PoolDataSource dataSource = PoolDataSourceFactory.getPoolDataSource();
- dataSource.setUser("josh");
- dataSource.setPassword("Welcome123!");
  dataSource.setConnectionFactoryClassName("oracle.jdbc.replay.OracleDataSourceImpl");
- dataSource.setURL("jdbc:oracle:thin:@//oraclejson.com:1521/freepdb1");
+ dataSource.setURL(System.getProperty("url"));
  dataSource.setInitialPoolSize(5);
  dataSource.setMinPoolSize(5);
  dataSource.setMaxPoolSize(10);