Merge pull request #7129 from tryncatch/BAEL-2804
BAEL-2804 JPA Query Parameters Usage
This commit is contained in:
Erik Pragt
GitHub
commit
37942a25b6
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@ -19,6 +19,11 @@
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<artifactId>hibernate-core</artifactId>
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<version>${hibernate.version}</version>
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</dependency>
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<dependency>
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<groupId>org.hibernate</groupId>
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<artifactId>hibernate-jpamodelgen</artifactId>
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<version>${hibernate.version}</version>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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@ -47,6 +52,58 @@
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.5.1</version>
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<configuration>
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<compilerArgument>-proc:none</compilerArgument>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.bsc.maven</groupId>
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<artifactId>maven-processor-plugin</artifactId>
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<version>3.3.3</version>
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<executions>
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<execution>
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<id>process</id>
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<goals>
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<goal>process</goal>
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</goals>
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<phase>generate-sources</phase>
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<configuration>
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<outputDirectory>target/metamodel</outputDirectory>
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<processors>
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<processor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</processor>
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</processors>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>build-helper-maven-plugin</artifactId>
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<version>3.0.0</version>
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<executions>
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<execution>
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<id>add-source</id>
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<phase>generate-sources</phase>
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<goals>
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<goal>add-source</goal>
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</goals>
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<configuration>
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<sources>
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<source>target/metamodel</source>
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</sources>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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<properties>
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<hibernate.version>5.4.0.Final</hibernate.version>
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<eclipselink.version>2.7.4-RC1</eclipselink.version>
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@ -0,0 +1,79 @@
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package com.baeldung.jpa.queryparams;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.GeneratedValue;
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import javax.persistence.GenerationType;
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import javax.persistence.Id;
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import javax.persistence.Table;
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@Entity
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@Table(name = "employees")
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public class Employee {
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/**
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*
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*/
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private static final long serialVersionUID = 1L;
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@Id
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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@Column(name = "id")
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private Long id;
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@Column(name = "employee_number", unique = true)
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private String empNumber;
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@Column(name = "employee_name")
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private String name;
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@Column(name = "employee_age")
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private int age;
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public Employee() {
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super();
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}
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public Employee(Long id, String empNumber) {
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super();
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this.id = id;
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this.empNumber = empNumber;
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}
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public Long getId() {
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return id;
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}
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public void setId(Long id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public int getAge() {
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return age;
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}
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public void setAge(int age) {
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this.age = age;
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}
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public void setName(String name) {
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this.name = name;
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}
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public String getEmpNumber() {
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return empNumber;
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}
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public void setEmpNumber(String empNumber) {
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this.empNumber = empNumber;
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}
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public static long getSerialversionuid() {
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return serialVersionUID;
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}
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}
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@ -224,4 +224,26 @@
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value="products_jpa.sql" />
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</properties>
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</persistence-unit>
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<persistence-unit name="jpa-h2-queryparams" transaction-type="RESOURCE_LOCAL">
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<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
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<class>com.baeldung.jpa.queryparams.Employee</class>
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<exclude-unlisted-classes>true</exclude-unlisted-classes>
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<properties>
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<property name="javax.persistence.jdbc.driver"
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value="org.h2.Driver" />
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<property name="javax.persistence.jdbc.url"
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value="jdbc:h2:mem:test" />
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<property name="javax.persistence.jdbc.user" value="sa" />
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<property name="javax.persistence.jdbc.password" value="" />
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<property name="hibernate.dialect"
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value="org.hibernate.dialect.H2Dialect" />
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<property name="hibernate.hbm2ddl.auto" value="create-drop" />
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<property name="show_sql" value="true" />
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<property name="hibernate.temp.use_jdbc_metadata_defaults"
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value="false" />
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<property name="javax.persistence.sql-load-script-source"
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value="employees2.sql" />
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</properties>
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</persistence-unit>
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</persistence>
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@ -0,0 +1,109 @@
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package com.baeldung.jpa.queryparams;
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import java.util.Arrays;
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import java.util.List;
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import javax.persistence.EntityManager;
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import javax.persistence.EntityManagerFactory;
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import javax.persistence.Persistence;
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import javax.persistence.TypedQuery;
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import javax.persistence.criteria.CriteriaBuilder;
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import javax.persistence.criteria.CriteriaQuery;
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import javax.persistence.criteria.ParameterExpression;
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import javax.persistence.criteria.Root;
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import org.junit.Assert;
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import org.junit.BeforeClass;
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import org.junit.Test;
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/**
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* JPAQueryParamsTest class tests.
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*
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* @author gmlopez.mackinnon@gmail.com
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*/
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public class JPAQueryParamsUnitTest {
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private static EntityManager entityManager;
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@BeforeClass
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public static void setup() {
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EntityManagerFactory factory = Persistence.createEntityManagerFactory("jpa-h2-queryparams");
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entityManager = factory.createEntityManager();
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}
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@Test
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public void givenEmpNumber_whenUsingPositionalParameter_thenReturnExpectedEmployee() {
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.empNumber = ?1", Employee.class);
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String empNumber = "A123";
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Employee employee = query.setParameter(1, empNumber)
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.getSingleResult();
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Assert.assertNotNull("Employee not found", employee);
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}
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@Test
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public void givenEmpNumberList_whenUsingPositionalParameter_thenReturnExpectedEmployee() {
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.empNumber IN (?1)", Employee.class);
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List<String> empNumbers = Arrays.asList("A123", "A124");
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List<Employee> employees = query.setParameter(1, empNumbers)
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.getResultList();
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Assert.assertNotNull("Employees not found", employees);
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Assert.assertFalse("Employees not found", employees.isEmpty());
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}
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@Test
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public void givenEmpNumber_whenUsingNamedParameter_thenReturnExpectedEmployee() {
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.empNumber = :number", Employee.class);
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String empNumber = "A123";
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Employee employee = query.setParameter("number", empNumber)
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.getSingleResult();
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Assert.assertNotNull("Employee not found", employee);
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}
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@Test
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public void givenEmpNumberList_whenUsingNamedParameter_thenReturnExpectedEmployee() {
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.empNumber IN (:numbers)", Employee.class);
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List<String> empNumbers = Arrays.asList("A123", "A124");
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List<Employee> employees = query.setParameter("numbers", empNumbers)
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.getResultList();
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Assert.assertNotNull("Employees not found", employees);
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Assert.assertFalse("Employees not found", employees.isEmpty());
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}
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@Test
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public void givenEmpNameAndEmpAge_whenUsingTwoNamedParameters_thenReturnExpectedEmployees() {
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.name = :name AND e.age = :empAge", Employee.class);
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String empName = "John Doe";
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int empAge = 55;
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List<Employee> employees = query.setParameter("name", empName)
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.setParameter("empAge", empAge)
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.getResultList();
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Assert.assertNotNull("Employees not found!", employees);
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Assert.assertTrue("Employees not found!", !employees.isEmpty());
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}
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@Test
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public void givenEmpNumber_whenUsingCriteriaQuery_thenReturnExpectedEmployee() {
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CriteriaBuilder cb = entityManager.getCriteriaBuilder();
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CriteriaQuery<Employee> cQuery = cb.createQuery(Employee.class);
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Root<Employee> c = cQuery.from(Employee.class);
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ParameterExpression<String> paramEmpNumber = cb.parameter(String.class);
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cQuery.select(c)
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.where(cb.equal(c.get(Employee_.empNumber), paramEmpNumber));
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TypedQuery<Employee> query = entityManager.createQuery(cQuery);
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String empNumber = "A123";
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query.setParameter(paramEmpNumber, empNumber);
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Employee employee = query.getSingleResult();
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Assert.assertNotNull("Employee not found!", employee);
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}
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@Test
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public void givenEmpNumber_whenUsingLiteral_thenReturnExpectedEmployee() {
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String empNumber = "A123";
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TypedQuery<Employee> query = entityManager.createQuery("SELECT e FROM Employee e WHERE e.empNumber = '" + empNumber + "'", Employee.class);
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Employee employee = query.getSingleResult();
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Assert.assertNotNull("Employee not found!", employee);
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}
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}
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@ -0,0 +1,2 @@
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INSERT INTO employees (employee_number, employee_name, employee_age) VALUES ('111', 'John Doe', 55);
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INSERT INTO employees (employee_number, employee_name, employee_age) VALUES ('A123', 'John Doe Junior', 25);
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