From 6aec4a6e0f5c92e1becc0a0d26d88b3ad57aeaa1 Mon Sep 17 00:00:00 2001
From: glopez <gmlopez.mackinnon@gmail.com>
Date: Sun, 16 Jun 2019 00:37:44 -0300
Subject: [PATCH] BAEL-2804 JPA Query Parameters Usage

This is the code behind the JPA Query Parameters Usage tutorial. Within
these examples you can find the way to use named and positional query
parameters either using plain JPQL or criteria queries.
---
 .../queryparams/JPAQueryParamsUnitTest.java   | 26 +++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/persistence-modules/java-jpa/src/test/java/com/baeldung/jpa/queryparams/JPAQueryParamsUnitTest.java b/persistence-modules/java-jpa/src/test/java/com/baeldung/jpa/queryparams/JPAQueryParamsUnitTest.java
index 151a06a278..fcac6415c9 100644
--- a/persistence-modules/java-jpa/src/test/java/com/baeldung/jpa/queryparams/JPAQueryParamsUnitTest.java
+++ b/persistence-modules/java-jpa/src/test/java/com/baeldung/jpa/queryparams/JPAQueryParamsUnitTest.java
@@ -1,5 +1,7 @@
 package com.baeldung.jpa.queryparams;
 
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 import javax.persistence.EntityManager;
@@ -33,12 +35,22 @@ public class JPAQueryParamsUnitTest {
 	@Test
     public void givenEmpNumber_whenUsingPositionalParameter_thenReturnExpectedEmployee() {
 		TypedQuery<Employee> query = entityManager.createQuery(
-		        "SELECT e FROM Employee e WHERE e.empNumber = ?0" , Employee.class);
+		        "SELECT e FROM Employee e WHERE e.empNumber = ?1" , Employee.class);
 		String empNumber = "A123";
 		Employee employee = query.setParameter(0, empNumber).getSingleResult();
         Assert.assertNotNull("Employee not found", employee);
     }
 
+	@Test
+    public void givenEmpNumberList_whenUsingPositionalParameter_thenReturnExpectedEmployee() {
+		TypedQuery<Employee> query = entityManager.createQuery(
+		        "SELECT e FROM Employee e WHERE e.empNumber IN (?1)" , Employee.class);
+		List<String> empNumbers = Arrays.asList("A123", "A124");
+		List<Employee> employees = query.setParameter(1, empNumbers).getResultList();
+        Assert.assertNotNull("Employees not found", employees);
+        Assert.assertFalse("Employees not found", employees.isEmpty());
+    }
+	
     @Test
     public void givenEmpNumber_whenUsingNamedParameter_thenReturnExpectedEmployee() {
 		TypedQuery<Employee> query = entityManager.createQuery(
@@ -49,7 +61,17 @@ public class JPAQueryParamsUnitTest {
     }
 
     @Test
-    public void givenEmpNumber_whenUsingTwoNamedParameters_thenReturnExpectedEmployees() {
+    public void givenEmpNumberList_whenUsingNamedParameter_thenReturnExpectedEmployee() {
+		TypedQuery<Employee> query = entityManager.createQuery(
+		        "SELECT e FROM Employee e WHERE e.empNumber IN (:numbers)" , Employee.class);
+		List<String> empNumbers = Arrays.asList("A123", "A124");
+		List<Employee> employees = query.setParameter("numbers", empNumbers).getResultList();
+		Assert.assertNotNull("Employees not found", employees);
+		Assert.assertFalse("Employees not found", employees.isEmpty());
+    }
+    
+    @Test
+    public void givenEmpNameAndEmpAge_whenUsingTwoNamedParameters_thenReturnExpectedEmployees() {
 		TypedQuery<Employee> query = entityManager.createQuery(
 		        "SELECT e FROM Employee e WHERE e.name = :name AND e.age = :empAge" , Employee.class);
 		String empName = "John Doe";