diff --git a/querydsl/pom.xml b/querydsl/pom.xml
new file mode 100644
index 0000000000..4efb5dcb8b
--- /dev/null
+++ b/querydsl/pom.xml
@@ -0,0 +1,187 @@
+
+
+ 4.0.0
+
+ org.baeldung
+ querydsl
+ 0.1-SNAPSHOT
+ jar
+
+ querydsl
+ http://maven.apache.org
+
+
+ UTF-8
+ 1.6
+ 4.10
+ 3.1.0.RELEASE
+ 4.1.1.Final
+ 2.5.0
+ 1.5.10
+
+
+
+
+
+ com.mysema.querydsl
+ querydsl-core
+ ${querydsl.version}
+
+
+
+ com.mysema.querydsl
+ querydsl-jpa
+ ${querydsl.version}
+
+
+
+ com.mysema.querydsl
+ querydsl-apt
+ ${querydsl.version}
+ provided
+
+
+
+
+ org.hibernate
+ hibernate-entitymanager
+ ${hibernate.version}
+ compile
+
+
+
+ org.hibernate.javax.persistence
+ hibernate-jpa-2.0-api
+ 1.0.0.Final
+ compile
+
+
+
+ commons-dbcp
+ commons-dbcp
+ 1.4
+ jar
+ compile
+
+
+
+ commons-pool
+ commons-pool
+ 1.5.5
+ jar
+ compile
+
+
+
+
+ org.hsqldb
+ hsqldb-j5
+ 2.2.4
+
+
+
+
+ org.springframework
+ spring-context
+ ${spring.version}
+
+
+
+ org.springframework
+ spring-webmvc
+ ${spring.version}
+
+
+
+ org.springframework
+ spring-orm
+ ${spring.version}
+ jar
+ compile
+
+
+
+ org.springframework
+ spring-aop
+ ${spring.version}
+
+
+
+ org.springframework
+ spring-test
+ ${spring.version}
+ jar
+ test
+
+
+
+
+ org.slf4j
+ slf4j-api
+ ${slf4j.version}
+
+
+ org.slf4j
+ jcl-over-slf4j
+ ${slf4j.version}
+ runtime
+
+
+ org.slf4j
+ slf4j-log4j12
+ ${slf4j.version}
+ runtime
+
+
+ log4j
+ log4j
+ 1.2.16
+
+
+
+
+ junit
+ junit
+ ${junit.version}
+ test
+
+
+
+
+
+
+
+
+
+ org.apache.maven.plugins
+ maven-compiler-plugin
+ 2.3.2
+
+ ${java.version}
+ ${java.version}
+ -proc:none
+
+
+
+
+
+ com.mysema.maven
+ maven-apt-plugin
+ 1.0.3
+
+
+
+ process
+
+
+ target/metamodel
+ com.mysema.query.apt.jpa.JPAAnnotationProcessor
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/querydsl/src/main/java/org/baeldung/dao/PersonDao.java b/querydsl/src/main/java/org/baeldung/dao/PersonDao.java
new file mode 100644
index 0000000000..cc193de44b
--- /dev/null
+++ b/querydsl/src/main/java/org/baeldung/dao/PersonDao.java
@@ -0,0 +1,12 @@
+package org.baeldung.dao;
+
+import org.baeldung.entity.Person;
+
+import java.util.List;
+
+public interface PersonDao {
+
+ public Person save(Person person);
+
+ public List findPersonsByFirstnameQueryDSL(String firstname);
+}
\ No newline at end of file
diff --git a/querydsl/src/main/java/org/baeldung/dao/PersonDaoImpl.java b/querydsl/src/main/java/org/baeldung/dao/PersonDaoImpl.java
new file mode 100644
index 0000000000..82ee4c16cd
--- /dev/null
+++ b/querydsl/src/main/java/org/baeldung/dao/PersonDaoImpl.java
@@ -0,0 +1,30 @@
+package org.baeldung.dao;
+
+import com.mysema.query.jpa.impl.JPAQuery;
+import org.baeldung.entity.Person;
+import org.baeldung.entity.QPerson;
+import org.springframework.stereotype.Repository;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+@Repository
+public class PersonDaoImpl implements PersonDao {
+
+ @PersistenceContext
+ private EntityManager em;
+
+ public Person save(Person person) {
+ em.persist(person);
+ return person;
+ }
+
+ public List findPersonsByFirstnameQueryDSL(String firstname) {
+ JPAQuery query = new JPAQuery(em);
+ QPerson person = QPerson.person;
+
+ return query.from(person).where(person.firstname.eq(firstname)).list(person);
+ }
+
+}
\ No newline at end of file
diff --git a/querydsl/src/main/java/org/baeldung/entity/Person.java b/querydsl/src/main/java/org/baeldung/entity/Person.java
new file mode 100644
index 0000000000..d9b0a5a97d
--- /dev/null
+++ b/querydsl/src/main/java/org/baeldung/entity/Person.java
@@ -0,0 +1,50 @@
+package org.baeldung.entity;
+
+import javax.persistence.*;
+
+@Entity
+public class Person {
+
+ @Id
+ @GeneratedValue(strategy = GenerationType.IDENTITY)
+ private Long id;
+
+ @Column
+ private String firstname;
+
+ @Column
+ private String surname;
+
+ Person() {
+ }
+
+ public Person(String firstname, String surname) {
+ this.firstname = firstname;
+ this.surname = surname;
+ }
+
+ public Long getId() {
+ return id;
+ }
+
+ public void setId(Long id) {
+ this.id = id;
+ }
+
+ public String getFirstname() {
+ return firstname;
+ }
+
+ public void setFirstname(String firstname) {
+ this.firstname = firstname;
+ }
+
+ public String getSurname() {
+ return surname;
+ }
+
+ public void setSurname(String surname) {
+ this.surname = surname;
+ }
+
+}
\ No newline at end of file
diff --git a/querydsl/src/main/resources/META-INF/persistence.xml b/querydsl/src/main/resources/META-INF/persistence.xml
new file mode 100644
index 0000000000..111d7933c3
--- /dev/null
+++ b/querydsl/src/main/resources/META-INF/persistence.xml
@@ -0,0 +1,19 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/querydsl/src/main/resources/log4j.xml b/querydsl/src/main/resources/log4j.xml
new file mode 100644
index 0000000000..a7f96b38a4
--- /dev/null
+++ b/querydsl/src/main/resources/log4j.xml
@@ -0,0 +1,42 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/querydsl/src/test/java/org/baeldung/dao/PersonDaoTest.java b/querydsl/src/test/java/org/baeldung/dao/PersonDaoTest.java
new file mode 100644
index 0000000000..29d4dd98e9
--- /dev/null
+++ b/querydsl/src/test/java/org/baeldung/dao/PersonDaoTest.java
@@ -0,0 +1,33 @@
+package org.baeldung.dao;
+
+import junit.framework.Assert;
+import org.baeldung.entity.Person;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.transaction.TransactionConfiguration;
+import org.springframework.transaction.annotation.Transactional;
+
+
+@ContextConfiguration("/test-context.xml")
+@RunWith(SpringJUnit4ClassRunner.class)
+@Transactional
+@TransactionConfiguration(defaultRollback=true)
+public class PersonDaoTest {
+
+ @Autowired
+ private PersonDao personDao;
+
+ @Test
+ public void testCreation() {
+ personDao.save(new Person("Erich", "Gamma"));
+ Person person = new Person("Kent", "Beck");
+ personDao.save(person);
+ personDao.save(new Person("Ralph", "Johnson"));
+
+ Person personFromDb = personDao.findPersonsByFirstnameQueryDSL("Kent").get(0);
+ Assert.assertEquals(person.getId(), personFromDb.getId());
+ }
+}
\ No newline at end of file
diff --git a/querydsl/src/test/resources/db.properties b/querydsl/src/test/resources/db.properties
new file mode 100644
index 0000000000..efee3669ce
--- /dev/null
+++ b/querydsl/src/test/resources/db.properties
@@ -0,0 +1,6 @@
+#In memory db
+db.username=sa
+db.password=
+db.driver=org.hsqldb.jdbcDriver
+db.url=jdbc:hsqldb:mem:app-db
+db.dialect=org.hibernate.dialect.HSQLDialect
\ No newline at end of file
diff --git a/querydsl/src/test/resources/test-context.xml b/querydsl/src/test/resources/test-context.xml
new file mode 100644
index 0000000000..13d823a857
--- /dev/null
+++ b/querydsl/src/test/resources/test-context.xml
@@ -0,0 +1,20 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/querydsl/src/test/resources/test-db.xml b/querydsl/src/test/resources/test-db.xml
new file mode 100644
index 0000000000..7f85630b6b
--- /dev/null
+++ b/querydsl/src/test/resources/test-db.xml
@@ -0,0 +1,49 @@
+
+
+
+
+
+
+ classpath:db.properties
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file