change delete() methods to cascade delete

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcOwnerRepositoryExtImpl.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jdbc;
 
 import java.util.Collection;
@@ -6,6 +22,7 @@ import java.util.List;
 import java.util.Map;
 
 import javax.sql.DataSource;
+import javax.transaction.Transactional;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
@@ -13,9 +30,16 @@ import org.springframework.dao.DataAccessException;
 import org.springframework.jdbc.core.BeanPropertyRowMapper;
 import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 import org.springframework.samples.petclinic.model.Owner;
+import org.springframework.samples.petclinic.model.Pet;
+import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.OwnerRepositoryExt;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("OwnerRepositoryExt")
 public class JdbcOwnerRepositoryExtImpl extends JdbcOwnerRepositoryImpl implements OwnerRepositoryExt {
@@ -41,10 +65,25 @@ public class JdbcOwnerRepositoryExtImpl extends JdbcOwnerRepositoryImpl implemen
 	}
 
 	@Override
+	@Transactional
 	public void delete(Owner owner) throws DataAccessException {
-		Map<String, Object> params = new HashMap<>();
-        params.put("id", owner.getId());
-        this.namedParameterJdbcTemplate.update("DELETE FROM owners WHERE id=:id", params);
+		Map<String, Object> owner_params = new HashMap<>();
+		owner_params.put("id", owner.getId());
+        List<Pet> pets = owner.getPets();
+        // cascade delete pets
+        for (Pet pet : pets){
+        	Map<String, Object> pet_params = new HashMap<>();
+        	pet_params.put("id", pet.getId());
+        	// cascade delete visits
+        	List<Visit> visits = pet.getVisits();
+            for (Visit visit : visits){
+            	Map<String, Object> visit_params = new HashMap<>();
+            	visit_params.put("id", visit.getId());
+            	this.namedParameterJdbcTemplate.update("DELETE FROM visits WHERE id=:id", visit_params);
+            }
+            this.namedParameterJdbcTemplate.update("DELETE FROM pets WHERE id=:id", pet_params);
+        }
+        this.namedParameterJdbcTemplate.update("DELETE FROM owners WHERE id=:id", owner_params);
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcPetRepositoryExtImpl.java

@@ -1,8 +1,25 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jdbc;
 
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import javax.sql.DataSource;
@@ -15,12 +32,18 @@ import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 import org.springframework.samples.petclinic.model.Owner;
 import org.springframework.samples.petclinic.model.Pet;
 import org.springframework.samples.petclinic.model.PetType;
+import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.OwnerRepositoryExt;
 import org.springframework.samples.petclinic.repository.PetRepositoryExt;
 import org.springframework.samples.petclinic.repository.VisitRepositoryExt;
 import org.springframework.samples.petclinic.util.EntityUtils;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("PetRepositoryExt")
 public class JdbcPetRepositoryExtImpl extends JdbcPetRepositoryImpl implements PetRepositoryExt {
@@ -60,9 +83,16 @@ public class JdbcPetRepositoryExtImpl extends JdbcPetRepositoryImpl implements P
 
 	@Override
 	public void delete(Pet pet) throws DataAccessException {
-		Map<String, Object> params = new HashMap<>();
-        params.put("id", pet.getId());
-        this.namedParameterJdbcTemplate.update("DELETE FROM pets WHERE id=:id", params);
+		Map<String, Object> pet_params = new HashMap<>();
+		pet_params.put("id", pet.getId());
+        List<Visit> visits = pet.getVisits();
+        // cascade delete visits
+        for (Visit visit : visits){
+        	Map<String, Object> visit_params = new HashMap<>();
+        	visit_params.put("id", visit.getId());
+        	this.namedParameterJdbcTemplate.update("DELETE FROM visits WHERE id=:id", visit_params);
+        }
+        this.namedParameterJdbcTemplate.update("DELETE FROM pets WHERE id=:id", pet_params);
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jdbc/JdbcPetTypeRepositoryExtImpl.java

@@ -1,7 +1,25 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jdbc;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import javax.sql.DataSource;
@@ -15,10 +33,17 @@ import org.springframework.jdbc.core.namedparam.BeanPropertySqlParameterSource;
 import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
 import org.springframework.orm.ObjectRetrievalFailureException;
+import org.springframework.samples.petclinic.model.Pet;
 import org.springframework.samples.petclinic.model.PetType;
+import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.PetTypeRepositoryExt;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("PetTypeRepositoryExt")
 public class JdbcPetTypeRepositoryExtImpl implements PetTypeRepositoryExt {
@@ -74,9 +99,31 @@ public class JdbcPetTypeRepositoryExtImpl implements PetTypeRepositoryExt {
 
 	@Override
 	public void delete(PetType petType) throws DataAccessException {
-		Map<String, Object> params = new HashMap<>();
-        params.put("id", petType.getId());
-        this.namedParameterJdbcTemplate.update("DELETE FROM types WHERE id=:id", params);
+		Map<String, Object> pettype_params = new HashMap<>();
+		pettype_params.put("id", petType.getId());
+		List<Pet> pets = new ArrayList<Pet>();
+		pets = this.namedParameterJdbcTemplate.
+    			query("SELECT pets.id, name, birth_date, type_id, owner_id FROM pets WHERE type_id=:id",
+    			pettype_params,
+    			BeanPropertyRowMapper.newInstance(Pet.class));
+		// cascade delete pets
+		for (Pet pet : pets){
+			Map<String, Object> pet_params = new HashMap<>();
+			pet_params.put("id", pet.getId());
+			List<Visit> visits = new ArrayList<Visit>();
+			visits = this.namedParameterJdbcTemplate.query(
+		            "SELECT id, pet_id, visit_date, description FROM visits WHERE pet_id = :id",
+		            pet_params,
+		            BeanPropertyRowMapper.newInstance(Visit.class));
+	        // cascade delete visits
+	        for (Visit visit : visits){
+	        	Map<String, Object> visit_params = new HashMap<>();
+	        	visit_params.put("id", visit.getId());
+	        	this.namedParameterJdbcTemplate.update("DELETE FROM visits WHERE id=:id", visit_params);
+	        }
+	        this.namedParameterJdbcTemplate.update("DELETE FROM pets WHERE id=:id", pet_params);
+        }
+        this.namedParameterJdbcTemplate.update("DELETE FROM types WHERE id=:id", pettype_params);
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaPetRepositoryExtImpl.java

@@ -1,19 +1,29 @@
-/**
+/*
+ * Copyright 2016 the original author or authors.
  *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
+
 package org.springframework.samples.petclinic.repository.jpa;
 
 import java.util.Collection;
-import java.util.List;
 
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
 
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.dao.DataAccessException;
-import org.springframework.samples.petclinic.model.Owner;
 import org.springframework.samples.petclinic.model.Pet;
-import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.PetRepositoryExt;
 import org.springframework.stereotype.Repository;
 
@@ -36,9 +46,13 @@ public class JpaPetRepositoryExtImpl extends JpaPetRepositoryImpl implements Pet
 
 	@Override
 	public void delete(Pet pet) throws DataAccessException {
+		//this.em.remove(this.em.contains(pet) ? pet : this.em.merge(pet));
 		String petId = pet.getId().toString();
 		this.em.createQuery("DELETE FROM Visit visit WHERE pet_id=" + petId).executeUpdate();
 		this.em.createQuery("DELETE FROM Pet pet WHERE id=" + petId).executeUpdate();
+		if (em.contains(pet)) {
+			em.remove(pet);
+		}
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaPetTypeRepositoryExtImpl.java

@@ -1,16 +1,41 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jpa;
 
+import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
 
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
 
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.dao.DataAccessException;
+import org.springframework.samples.petclinic.model.Pet;
 import org.springframework.samples.petclinic.model.PetType;
+import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.PetTypeRepositoryExt;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("PetTypeRepositoryExt")
 public class JpaPetTypeRepositoryExtImpl implements PetTypeRepositoryExt {
@@ -39,9 +64,26 @@ public class JpaPetTypeRepositoryExtImpl implements PetTypeRepositoryExt {
 
 	}
 
+	@SuppressWarnings("unchecked")
 	@Override
 	public void delete(PetType petType) throws DataAccessException {
-		this.em.remove(this.em.contains(petType) ? petType : this.em.merge(petType));
+		//this.em.remove(this.em.contains(petType) ? petType : this.em.merge(petType));
+		String petTypeId = petType.getId().toString();
+		
+		List<Pet> pets = new ArrayList<Pet>();
+		pets = this.em.createQuery("SELECT pet FROM Pet pet WHERE type_id=" + petTypeId).getResultList();
+		for (Pet pet : pets){
+			List<Visit> visits = new ArrayList<Visit>();
+			visits = pet.getVisits();
+			for (Visit visit : visits){
+				this.em.createQuery("DELETE FROM Visit visit WHERE id=" + visit.getId().toString()).executeUpdate();
+			}
+			this.em.createQuery("DELETE FROM Pet pet WHERE id=" + pet.getId().toString()).executeUpdate();
+		}
+		this.em.createQuery("DELETE FROM PetType pettype WHERE id=" + petTypeId).executeUpdate();
+		if (em.contains(petType)) {
+			em.remove(petType);
+		}
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaSpecialtyRepositoryExtImpl.java

@@ -1,3 +1,19 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jpa;
 
 import java.util.Collection;
@@ -11,6 +27,11 @@ import org.springframework.samples.petclinic.model.Specialty;
 import org.springframework.samples.petclinic.repository.SpecialtyRepositoryExt;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("SpecialtyRepositoryExt")
 public class JpaSpecialtyRepositoryExtImpl implements SpecialtyRepositoryExt {
@@ -40,7 +61,13 @@ public class JpaSpecialtyRepositoryExtImpl implements SpecialtyRepositoryExt {
 
 	@Override
 	public void delete(Specialty specialty) throws DataAccessException {
-		this.em.remove(this.em.contains(specialty) ? specialty : this.em.merge(specialty));
+		//this.em.remove(this.em.contains(specialty) ? specialty : this.em.merge(specialty));
+		String specId = specialty.getId().toString();
+		this.em.createNativeQuery("DELETE FROM vet_specialties WHERE specialty_id=" + specId).executeUpdate();
+		this.em.createQuery("DELETE FROM Specialty specialty WHERE id=" + specId).executeUpdate();
+		if (em.contains(specialty)) {
+			em.remove(specialty);
+		}
 	}
 
 }

src/main/java/org/springframework/samples/petclinic/repository/jpa/JpaVisitRepositoryExtImpl.java

@@ -1,10 +1,25 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.springframework.samples.petclinic.repository.jpa;
 
 import java.util.Collection;
 
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
-import javax.persistence.Query;
 
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.dao.DataAccessException;
@@ -12,6 +27,11 @@ import org.springframework.samples.petclinic.model.Visit;
 import org.springframework.samples.petclinic.repository.VisitRepositoryExt;
 import org.springframework.stereotype.Repository;
 
+/**
+ * @author Vitaliy Fedoriv
+ *
+ */
+
 @Repository
 @Qualifier("VisitRepositoryExt")
 public class JpaVisitRepositoryExtImpl extends JpaVisitRepositoryImpl implements VisitRepositoryExt {
@@ -34,6 +54,9 @@ public class JpaVisitRepositoryExtImpl extends JpaVisitRepositoryImpl implements
 	public void delete(Visit visit) throws DataAccessException {
 		String visitId = visit.getId().toString();
 		this.em.createQuery("DELETE FROM Visit visit WHERE id=" + visitId).executeUpdate();
+		if (em.contains(visit)) {
+			em.remove(visit);
+		}
 	}
 
 }