Add support for H2

Closes spring-projectsgh-584

pom.xml

@@ -66,10 +66,10 @@
         </exclusions>
     </dependency>
 
-    <!-- Databases - Uses HSQL by default -->
+    <!-- Databases - Uses H2 by default -->
     <dependency>
-      <groupId>org.hsqldb</groupId>
-      <artifactId>hsqldb</artifactId>
+      <groupId>com.h2database</groupId>
+      <artifactId>h2</artifactId>
       <scope>runtime</scope>
     </dependency>
     <dependency>

readme.md

@@ -35,8 +35,11 @@ Our issue tracker is available here: https://github.com/spring-projects/spring-p
 
 ## Database configuration
 
-In its default configuration, Petclinic uses an in-memory database (HSQLDB) which
-gets populated at startup with data. A similar setup is provided for MySql in case a persistent database configuration is needed.
+In its default configuration, Petclinic uses an in-memory database (H2) which
+gets populated at startup with data. The h2 console is automatically exposed at `http://localhost:8080/h2-console`
+and it is possibl to inspect the content of the database using the `jdbc:h2:mem:testdb` url.
+
+A similar setup is provided for MySql in case a persistent database configuration is needed.
 Note that whenever the database type is changed, the app needs to be run with a different profile: `spring.profiles.active=mysql` for MySql.
 
 You could start MySql locally with whatever installer works for your OS, or with docker:

src/main/resources/application.properties

@@ -1,5 +1,5 @@
 # database init, supports mysql too
-database=hsqldb
+database=h2
 spring.datasource.schema=classpath*:db/${database}/schema.sql
 spring.datasource.data=classpath*:db/${database}/data.sql
 

src/main/resources/db/h2/data.sql

@@ -0,0 +1,53 @@
+INSERT INTO vets VALUES (1, 'James', 'Carter');
+INSERT INTO vets VALUES (2, 'Helen', 'Leary');
+INSERT INTO vets VALUES (3, 'Linda', 'Douglas');
+INSERT INTO vets VALUES (4, 'Rafael', 'Ortega');
+INSERT INTO vets VALUES (5, 'Henry', 'Stevens');
+INSERT INTO vets VALUES (6, 'Sharon', 'Jenkins');
+
+INSERT INTO specialties VALUES (1, 'radiology');
+INSERT INTO specialties VALUES (2, 'surgery');
+INSERT INTO specialties VALUES (3, 'dentistry');
+
+INSERT INTO vet_specialties VALUES (2, 1);
+INSERT INTO vet_specialties VALUES (3, 2);
+INSERT INTO vet_specialties VALUES (3, 3);
+INSERT INTO vet_specialties VALUES (4, 2);
+INSERT INTO vet_specialties VALUES (5, 1);
+
+INSERT INTO types VALUES (1, 'cat');
+INSERT INTO types VALUES (2, 'dog');
+INSERT INTO types VALUES (3, 'lizard');
+INSERT INTO types VALUES (4, 'snake');
+INSERT INTO types VALUES (5, 'bird');
+INSERT INTO types VALUES (6, 'hamster');
+
+INSERT INTO owners VALUES (1, 'George', 'Franklin', '110 W. Liberty St.', 'Madison', '6085551023');
+INSERT INTO owners VALUES (2, 'Betty', 'Davis', '638 Cardinal Ave.', 'Sun Prairie', '6085551749');
+INSERT INTO owners VALUES (3, 'Eduardo', 'Rodriquez', '2693 Commerce St.', 'McFarland', '6085558763');
+INSERT INTO owners VALUES (4, 'Harold', 'Davis', '563 Friendly St.', 'Windsor', '6085553198');
+INSERT INTO owners VALUES (5, 'Peter', 'McTavish', '2387 S. Fair Way', 'Madison', '6085552765');
+INSERT INTO owners VALUES (6, 'Jean', 'Coleman', '105 N. Lake St.', 'Monona', '6085552654');
+INSERT INTO owners VALUES (7, 'Jeff', 'Black', '1450 Oak Blvd.', 'Monona', '6085555387');
+INSERT INTO owners VALUES (8, 'Maria', 'Escobito', '345 Maple St.', 'Madison', '6085557683');
+INSERT INTO owners VALUES (9, 'David', 'Schroeder', '2749 Blackhawk Trail', 'Madison', '6085559435');
+INSERT INTO owners VALUES (10, 'Carlos', 'Estaban', '2335 Independence La.', 'Waunakee', '6085555487');
+
+INSERT INTO pets VALUES (1, 'Leo', '2010-09-07', 1, 1);
+INSERT INTO pets VALUES (2, 'Basil', '2012-08-06', 6, 2);
+INSERT INTO pets VALUES (3, 'Rosy', '2011-04-17', 2, 3);
+INSERT INTO pets VALUES (4, 'Jewel', '2010-03-07', 2, 3);
+INSERT INTO pets VALUES (5, 'Iggy', '2010-11-30', 3, 4);
+INSERT INTO pets VALUES (6, 'George', '2010-01-20', 4, 5);
+INSERT INTO pets VALUES (7, 'Samantha', '2012-09-04', 1, 6);
+INSERT INTO pets VALUES (8, 'Max', '2012-09-04', 1, 6);
+INSERT INTO pets VALUES (9, 'Lucky', '2011-08-06', 5, 7);
+INSERT INTO pets VALUES (10, 'Mulligan', '2007-02-24', 2, 8);
+INSERT INTO pets VALUES (11, 'Freddy', '2010-03-09', 5, 9);
+INSERT INTO pets VALUES (12, 'Lucky', '2010-06-24', 2, 10);
+INSERT INTO pets VALUES (13, 'Sly', '2012-06-08', 1, 10);
+
+INSERT INTO visits VALUES (1, 7, '2013-01-01', 'rabies shot');
+INSERT INTO visits VALUES (2, 8, '2013-01-02', 'rabies shot');
+INSERT INTO visits VALUES (3, 8, '2013-01-03', 'neutered');
+INSERT INTO visits VALUES (4, 7, '2013-01-04', 'spayed');

src/main/resources/db/h2/schema.sql

@@ -0,0 +1,64 @@
+DROP TABLE vet_specialties IF EXISTS;
+DROP TABLE vets IF EXISTS;
+DROP TABLE specialties IF EXISTS;
+DROP TABLE visits IF EXISTS;
+DROP TABLE pets IF EXISTS;
+DROP TABLE types IF EXISTS;
+DROP TABLE owners IF EXISTS;
+
+
+CREATE TABLE vets (
+  id         INTEGER IDENTITY PRIMARY KEY,
+  first_name VARCHAR(30),
+  last_name  VARCHAR(30)
+);
+CREATE INDEX vets_last_name ON vets (last_name);
+
+CREATE TABLE specialties (
+  id   INTEGER IDENTITY PRIMARY KEY,
+  name VARCHAR(80)
+);
+CREATE INDEX specialties_name ON specialties (name);
+
+CREATE TABLE vet_specialties (
+  vet_id       INTEGER NOT NULL,
+  specialty_id INTEGER NOT NULL
+);
+ALTER TABLE vet_specialties ADD CONSTRAINT fk_vet_specialties_vets FOREIGN KEY (vet_id) REFERENCES vets (id);
+ALTER TABLE vet_specialties ADD CONSTRAINT fk_vet_specialties_specialties FOREIGN KEY (specialty_id) REFERENCES specialties (id);
+
+CREATE TABLE types (
+  id   INTEGER IDENTITY PRIMARY KEY,
+  name VARCHAR(80)
+);
+CREATE INDEX types_name ON types (name);
+
+CREATE TABLE owners (
+  id         INTEGER IDENTITY PRIMARY KEY,
+  first_name VARCHAR(30),
+  last_name  VARCHAR_IGNORECASE(30),
+  address    VARCHAR(255),
+  city       VARCHAR(80),
+  telephone  VARCHAR(20)
+);
+CREATE INDEX owners_last_name ON owners (last_name);
+
+CREATE TABLE pets (
+  id         INTEGER IDENTITY PRIMARY KEY,
+  name       VARCHAR(30),
+  birth_date DATE,
+  type_id    INTEGER NOT NULL,
+  owner_id   INTEGER NOT NULL
+);
+ALTER TABLE pets ADD CONSTRAINT fk_pets_owners FOREIGN KEY (owner_id) REFERENCES owners (id);
+ALTER TABLE pets ADD CONSTRAINT fk_pets_types FOREIGN KEY (type_id) REFERENCES types (id);
+CREATE INDEX pets_name ON pets (name);
+
+CREATE TABLE visits (
+  id          INTEGER IDENTITY PRIMARY KEY,
+  pet_id      INTEGER NOT NULL,
+  visit_date  DATE,
+  description VARCHAR(255)
+);
+ALTER TABLE visits ADD CONSTRAINT fk_visits_pets FOREIGN KEY (pet_id) REFERENCES pets (id);
+CREATE INDEX visits_pet_id ON visits (pet_id);