I wanted to write one generic method for all different entities which returns List of messages .
For example : pseudo code
enter code here
private List<String> constraintViolationsDetected (genericentity) {
Set<ConstraintViolation<?>> constraintViolations = validator.validate(?);
}
I am using javax.persistence[eclipselink-2.6.0] & Springs
Here is my code, I would like to Validate DeploymentConfiguration Entity before saving to database. I have 3 more different entities – I have to write validation for other entities also. Note: Finally I will call these methods and exposing as a Rest Services (Jersy)
1) DeploymentConfiguration is model/entity
package com.Demo.persistence.model;
import java.io.Serializable;
import java.util.List;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
public class DeploymentConfiguration implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@Column(name= DBConstants.DEPLOYMENT_ID,length = 255)
@NotNull(message="DepoymentId type must be specified.")
@Size(min=1, max=255)
//@Valid
private String depoymentId;
@Basic
@Column(name = DBConstants.SERVER_TYPE_VALUE, length = 255)
@NotNull(message="Deployment Server must be specified.")
@Size(min=1, max=255)
@Pattern(regexp="^(Dev|QA|Production)$",message="Invalid Servertype
private String deploymentServerValue;
public String getDepoymentId () {
return depoymentId;
}
public void setConnectionId(String depoymentId) {
this.depoymentId = depoymentId;
}
public String getDeploymentServerValue () {
return deploymentServerValue;
}
public void setDeploymentServerValue (String deploymentServerValue)
{
this.deploymentServerValue = deploymentServerValue;
}
2) DaoImplementation
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
public class DeploymentConfigurationDaoImpl
{
EntityManagerProvider entityManagerProvider;
public void saveConnectionConfigurations(ConnectionConfiguration connConfig) {
LOG.debug("Saving depoyment Configuration");
if (null == connConfig) {
return;
}
EntityManager em = null;
em = getEntityManagerProvider().getEntityManager();
try {
em.getTransaction().begin();
em.persist(connConfig);
em.getTransaction().commit();
em.getEntityManagerFactory().getCache().evictAll();
LOG.debug("Persisting data");
}
catch (Exception ex)
{
LOG.error("Error while persisting the depoyment Configuration", ex);
} finally {
if (em != null && em.isOpen())
em.close();
}
}
----------------Persistence .xml --------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="com.Demo.persistence"
transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>com.Demo.persistence.model.DeploymentConfiguration</class>
<shared-cache-mode>ALL</shared-cache-mode>
<properties>
<property name="eclipselink.ddl-generation" value="create-or-extend-tables" />
</properties>
</persistence-unit>
</persistence>
--------------------------------------------------------------------------------Test persistence.xml - Just sharing with you
enter code here
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="com.Demo.persistence"
transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>com.Demo.persistence.model.DeploymentConfiguration </class>
<shared-cache-mode>ALL</shared-cache-mode>
<properties>
<!-- Connection Properties For Test DB -->
<property name="javax.persistence.jdbc.url" value="jdbc:derby:memory:target/CoreServicesTestDB;create=true" />
<property name="javax.persistence.jdbc.driver" value="org.apache.derby.jdbc.EmbeddedDriver" />
<property name="javax.persistence.jdbc.user" value="gomobile" />
<property name="javax.persistence.jdbc.password" value="secret" />
<property name="eclipselink.target-database" value="Derby" />
<property name="eclipselink.target-server" value="None" />
<!-- General Properties -->
<property name="eclipselink.cache.shared.default" value="false" />
<property name="eclipselink.weaving" value="static" />
<property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
<property name="eclipselink.ddl-generation.output-mode"
value="both" />
<!-- Logging Properties -->
<property name="eclipselink.logging.logger" value="DefaultLogger" />
<property name="eclipselink.logging.level" value="FINEST" />
<property name="eclipselink.logging.level.sql" value="FINEST" />
<property name="eclipselink.logging.level.cache" value="FINEST" />
</properties>
</persistence-unit>
</persistence>
I am using below dependencies
<!-- JPA dependencies - Start -->
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>eclipselink</artifactId>
</dependency>
<!-- JPA dependencies - Start -->
<!-- Spring dependencies - Start -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
<!-- Spring dependencies - End -->
<!-- slf4j dependencies - Start -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>com.springsource.slf4j.log4j</artifactId>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>com.springsource.slf4j.api</artifactId>
</dependency>
<!-- slf4j dependencies - End -->
<!-- Junits dependencies - Start -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>org.springframework.test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
</dependency>
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>org.springframework.orm</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.servicemix.bundles</groupId>
<artifactId>org.apache.servicemix.bundles.derby</artifactId>
<scope>test</scope>
</dependency>
<!-- Junits dependencies - End -->
