Merge remote-tracking branch 'upstream/master' into BAEL-2440

core-java-arrays/README.md

@@ -12,4 +12,4 @@
 - [Arrays in Java: A Reference Guide](https://www.baeldung.com/java-arrays-guide)
 - [How to Invert an Array in Java](http://www.baeldung.com/java-invert-array)
 - [Array Operations in Java](http://www.baeldung.com/java-common-array-operations)
-
+- [Intersection Between two Integer Arrays](https://www.baeldung.com/java-array-intersection)

core-java-collections/README.md

@@ -51,3 +51,4 @@
 - [Java List Initialization in One Line](https://www.baeldung.com/java-init-list-one-line)
 - [ClassCastException: Arrays$ArrayList cannot be cast to ArrayList](https://www.baeldung.com/java-classcastexception-arrays-arraylist)
 - [A Guide to EnumMap](https://www.baeldung.com/java-enum-map)
+- [Ways to Iterate Over a List in Java](https://www.baeldung.com/java-iterate-list)

core-java-concurrency/README.md

@@ -31,3 +31,4 @@
 - [Runnable vs. Callable in Java](http://www.baeldung.com/java-runnable-callable)
 - [Brief Introduction to Java Thread.yield()](https://www.baeldung.com/java-thread-yield)
 - [Print Even and Odd Numbers Using 2 Threads](https://www.baeldung.com/java-even-odd-numbers-with-2-threads)
+- [Java CyclicBarrier vs CountDownLatch](https://www.baeldung.com/java-cyclicbarrier-countdownlatch)

core-java-lang/README.md

@@ -58,4 +58,4 @@
 - [Inheritance and Composition (Is-a vs Has-a relationship) in Java](http://www.baeldung.com/java-inheritance-composition)
 - [A Guide to Constructors in Java](https://www.baeldung.com/java-constructors)
 - [Retrieving a Class Name in Java](https://www.baeldung.com/java-class-name)
-
+- [Java equals() and hashCode() Contracts](https://www.baeldung.com/java-equals-hashcode-contracts)

core-java/README.md

@@ -89,3 +89,6 @@
 - [Java – Try with Resources](https://www.baeldung.com/java-try-with-resources)
 - [Abstract Classes in Java](https://www.baeldung.com/java-abstract-class)
 - [Guide to Character Encoding](https://www.baeldung.com/java-char-encoding)
+- [Calculate the Area of a Circle in Java](https://www.baeldung.com/java-calculate-circle-area)
+- [A Guide to the Java Math Class](https://www.baeldung.com/java-lang-math)
+- [Graphs in Java](https://www.baeldung.com/java-graphs)

core-kotlin/README.md

@@ -47,3 +47,4 @@
 - [Guide to Sorting in Kotlin](https://www.baeldung.com/kotlin-sort)
 - [Dependency Injection for Kotlin with Injekt](https://www.baeldung.com/kotlin-dependency-injection-with-injekt)
 - [Implementing a Binary Tree in Kotlin](https://www.baeldung.com/kotlin-binary-tree)
+- [Generate a Random Alphanumeric String in Kotlin](https://www.baeldung.com/kotlin-random-alphanumeric-string)

java-dates/README.md

@@ -24,4 +24,5 @@
 - [Add Hours To a Date In Java](http://www.baeldung.com/java-add-hours-date)
 - [Guide to DateTimeFormatter](https://www.baeldung.com/java-datetimeformatter)
 - [Format ZonedDateTime to String](https://www.baeldung.com/java-format-zoned-datetime-string)
-- [Convert Between java.time.Instant and java.sql.Timestamp](Convert Between java.time.Instant and java.sql.Timestamp)
+- [Convert Between java.time.Instant and java.sql.Timestamp](https://www.baeldung.com/java-time-instant-to-java-sql-timestamp)
+- [Convert between String and Timestamp](https://www.baeldung.com/java-string-to-timestamp)

java-strings/README.md

@@ -39,3 +39,7 @@
 - [Generate a Secure Random Password in Java](https://www.baeldung.com/java-generate-secure-password)
 - [Removing Repeated Characters from a String](https://www.baeldung.com/java-remove-repeated-char)
 - [Join Array of Primitives with Separator in Java](https://www.baeldung.com/java-join-primitive-array)
+- [Convert String to Byte Array and Reverse in Java](https://www.baeldung.com/java-string-to-byte-array)
+- [Pad a String with Zeros or Spaces in Java](https://www.baeldung.com/java-pad-string)
+- [Adding a Newline Character to a String in Java](https://www.baeldung.com/java-string-newline)
+- [Remove or Replace part of a String in Java](https://www.baeldung.com/java-remove-replace-string-part)

kotlin-libraries/README.md

@@ -8,3 +8,4 @@
 - [Kotlin with Ktor](http://www.baeldung.com/kotlin-ktor)
 - [Guide to the Kotlin Exposed Framework](https://www.baeldung.com/kotlin-exposed-persistence)
 - [Working with Dates in Kotlin](https://www.baeldung.com/kotlin-dates)
+- [Introduction to Arrow in Kotlin](https://www.baeldung.com/kotlin-arrow)

libraries-data/README.md

@@ -14,3 +14,4 @@
 - [Building a Data Pipeline with Flink and Kafka](https://www.baeldung.com/kafka-flink-data-pipeline)
 - [Intro to Apache Storm](https://www.baeldung.com/apache-storm)
 - [Guide to Ebean ORM](https://www.baeldung.com/ebean-orm)
+- [Introduction to Kafka Connectors](https://www.baeldung.com/kafka-connectors-guide)

persistence-modules/README.md

@@ -10,3 +10,4 @@
 - [A Guide to Jdbi](http://www.baeldung.com/jdbi)
 - [Pessimistic Locking in JPA](http://www.baeldung.com/jpa-pessimistic-locking)
 - [Get All Data from a Table with Hibernate](https://www.baeldung.com/hibernate-select-all)
+- [Spring Data with Reactive Cassandra](https://www.baeldung.com/spring-data-cassandra-reactive)

persistence-modules/hibernate5/README.md

@@ -19,3 +19,5 @@
 - [Hibernate 5 Naming Strategy Configuration](https://www.baeldung.com/hibernate-naming-strategy)
 - [Proxy in Hibernate load() Method](https://www.baeldung.com/hibernate-proxy-load-method)
 - [Custom Types in Hibernate](https://www.baeldung.com/hibernate-custom-types)
+- [Criteria API – An Example of IN Expressions](https://www.baeldung.com/jpa-criteria-api-in-expressions)
+- [Difference Between @JoinColumn and mappedBy](https://www.baeldung.com/jpa-joincolumn-vs-mappedby)

persistence-modules/hibernate5/src/main/resources/init_database.sql

@@ -0,0 +1,10 @@
+CREATE ALIAS UPDATE_EMPLOYEE_DESIGNATION AS $$
+import java.sql.CallableStatement;
+import java.sql.Connection;
+import java.sql.SQLException;
+@CODE
+void updateEmployeeDesignation(final Connection conn, final String employeeNumber, final String title) throws SQLException {
+        CallableStatement updateStatement = conn.prepareCall("update deptemployee set title = '" + title + "' where employeeNumber = '" + employeeNumber + "'");
+        updateStatement.execute();
+}
+$$;

persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/NamedQueryIntegrationTest.java

@@ -0,0 +1,98 @@
+package com.baeldung.hibernate;
+
+import com.baeldung.hibernate.entities.Department;
+import com.baeldung.hibernate.entities.DeptEmployee;
+import org.hibernate.Session;
+import org.hibernate.Transaction;
+import org.hibernate.query.NativeQuery;
+import org.hibernate.query.Query;
+import org.junit.*;
+
+import java.io.IOException;
+
+public class NamedQueryIntegrationTest {
+    private static Session session;
+
+    private Transaction transaction;
+    
+    private Long purchaseDeptId;
+    
+    @BeforeClass
+    public static void setUpClass() throws IOException {
+        session = HibernateUtil.getSessionFactory("hibernate-namedquery.properties").openSession();
+    }
+
+    @Before
+    public void setUp() throws IOException {
+        transaction = session.beginTransaction();
+        session.createNativeQuery("delete from deptemployee").executeUpdate();
+        session.createNativeQuery("delete from department").executeUpdate();
+        Department salesDepartment = new Department("Sales");
+        Department purchaseDepartment = new Department("Purchase");        
+        DeptEmployee employee1 = new DeptEmployee("John Wayne", "001", salesDepartment);
+        DeptEmployee employee2 = new DeptEmployee("Sarah Vinton", "002", salesDepartment);
+        DeptEmployee employee3 = new DeptEmployee("Lisa Carter", "003", salesDepartment);
+        session.persist(salesDepartment);
+        session.persist(purchaseDepartment);
+        purchaseDeptId = purchaseDepartment.getId();
+        session.persist(employee1);
+        session.persist(employee2);
+        session.persist(employee3);
+        transaction.commit();
+        transaction = session.beginTransaction();
+    }
+    
+    @After
+    public void tearDown() {
+        if(transaction.isActive()) {
+            transaction.rollback();
+        }
+    }
+
+    @Test
+    public void whenNamedQueryIsCalledUsingCreateNamedQuery_ThenOk() {
+        Query<DeptEmployee> query = session.createNamedQuery("DeptEmployee_FindByEmployeeNumber", DeptEmployee.class);
+        query.setParameter("employeeNo", "001");
+        DeptEmployee result = query.getSingleResult();
+        Assert.assertNotNull(result);
+        Assert.assertEquals("John Wayne", result.getName());
+    }
+       
+    @Test
+    public void whenNamedNativeQueryIsCalledUsingCreateNamedQuery_ThenOk() {
+        Query<DeptEmployee> query = session.createNamedQuery("DeptEmployee_FindByEmployeeName", DeptEmployee.class);
+        query.setParameter("name", "John Wayne");
+        DeptEmployee result = query.getSingleResult();
+        Assert.assertNotNull(result);
+        Assert.assertEquals("001", result.getEmployeeNumber());
+    }
+    
+    @Test
+    public void whenNamedNativeQueryIsCalledUsingGetNamedNativeQuery_ThenOk() {
+        @SuppressWarnings("rawtypes")
+        NativeQuery query = session.getNamedNativeQuery("DeptEmployee_FindByEmployeeName");
+        query.setParameter("name", "John Wayne");
+        DeptEmployee result = (DeptEmployee) query.getSingleResult();
+        Assert.assertNotNull(result);
+        Assert.assertEquals("001", result.getEmployeeNumber());
+    }
+    
+    @Test
+    public void whenUpdateQueryIsCalledWithCreateNamedQuery_ThenOk() {
+        Query spQuery = session.createNamedQuery("DeptEmployee_UpdateEmployeeDepartment");
+        spQuery.setParameter("employeeNo", "001");
+        Department newDepartment = session.find(Department.class, purchaseDeptId);
+        spQuery.setParameter("newDepartment", newDepartment);
+        spQuery.executeUpdate();
+        transaction.commit();        
+    } 
+    
+    @Test
+    public void whenNamedStoredProcedureIsCalledWithCreateNamedQuery_ThenOk() {
+        Query spQuery = session.createNamedQuery("DeptEmployee_UpdateEmployeeDesignation");
+        spQuery.setParameter("employeeNumber", "002");
+        spQuery.setParameter("newDesignation", "Supervisor");
+        spQuery.executeUpdate();
+        transaction.commit();        
+    }       
+}

persistence-modules/hibernate5/src/test/resources/hibernate-namedquery.properties

@@ -0,0 +1,9 @@
+hibernate.connection.driver_class=org.h2.Driver
+hibernate.connection.url=jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1;INIT=RUNSCRIPT FROM 'src/main/resources/init_database.sql'
+hibernate.connection.username=sa
+hibernate.connection.autocommit=true
+jdbc.password=
+
+hibernate.dialect=org.hibernate.dialect.H2Dialect
+hibernate.show_sql=true
+hibernate.hbm2ddl.auto=create-drop

persistence-modules/java-jpa/README.md

@@ -2,3 +2,4 @@
 
 - [A Guide to SqlResultSetMapping](http://www.baeldung.com/jpa-sql-resultset-mapping)
 - [A Guide to Stored Procedures with JPA](http://www.baeldung.com/jpa-stored-procedures)
+- [Fixing the JPA error “java.lang.String cannot be cast to [Ljava.lang.String;”](https://www.baeldung.com/jpa-error-java-lang-string-cannot-be-cast) 

persistence-modules/spring-data-jpa/README.md

@@ -16,6 +16,7 @@
 - [DDD Aggregates and @DomainEvents](https://www.baeldung.com/spring-data-ddd)
 - [Spring Data – CrudRepository save() Method](https://www.baeldung.com/spring-data-crud-repository-save)
 - [Limiting Query Results with JPA and Spring Data JPA](https://www.baeldung.com/jpa-limit-query-results)
+- [Sorting Query Results with Spring Data](https://www.baeldung.com/spring-data-sorting)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

persistence-modules/spring-jpa/README.md

@@ -19,6 +19,7 @@
 - [Obtaining Auto-generated Keys in Spring JDBC](http://www.baeldung.com/spring-jdbc-autogenerated-keys)
 - [Transactions with Spring 4 and JPA](http://www.baeldung.com/transaction-configuration-with-jpa-and-spring)
 - [Use Criteria Queries in a Spring Data Application](https://www.baeldung.com/spring-data-criteria-queries)
+- [Many-To-Many Relationship in JPA](https://www.baeldung.com/jpa-many-to-many)
 
 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  

spring-boot-bootstrap/README.md

@@ -4,3 +4,4 @@
 - [Thin JARs with Spring Boot](http://www.baeldung.com/spring-boot-thin-jar)
 - [Deploying a Spring Boot Application to Cloud Foundry](https://www.baeldung.com/spring-boot-app-deploy-to-cloud-foundry)
 - [Deploy a Spring Boot Application to Google App Engine](https://www.baeldung.com/spring-boot-google-app-engine)
+- [Deploy a Spring Boot Application to OpenShift](https://www.baeldung.com/spring-boot-deploy-openshift)

spring-integration/README.md

@@ -2,6 +2,7 @@
 - [Introduction to Spring Integration](http://www.baeldung.com/spring-integration)
 - [Security In Spring Integration](http://www.baeldung.com/spring-integration-security)
 - [Spring Integration Java DSL](https://www.baeldung.com/spring-integration-java-dsl)
+- [Using Subflows in Spring Integration](https://www.baeldung.com/spring-integration-subflows)
 
 ### Running the Sample
 Executing the `mvn exec:java` maven command (either from the command line or from an IDE) will start up the application. Follow the command prompt for further instructions.

spring-mvc-simple/README.md

@@ -7,3 +7,4 @@
 - [Apache Tiles Integration with Spring MVC](http://www.baeldung.com/spring-mvc-apache-tiles)
 - [Guide to Spring Email](http://www.baeldung.com/spring-email)
 - [Request Method Not Supported (405) in Spring](https://www.baeldung.com/spring-request-method-not-supported-405)
+- [Spring @RequestParam Annotation](https://www.baeldung.com/spring-request-param)

testing-modules/README.md

@@ -14,3 +14,4 @@
 - [JSON Schema Validation with REST-assured](http://www.baeldung.com/rest-assured-json-schema)
 - [Testing Callbacks with Mockito](http://www.baeldung.com/mockito-callbacks)
 - [Running JUnit Tests in Parallel with Maven](https://www.baeldung.com/maven-junit-parallel-tests)
+- [Gatling vs JMeter vs The Grinder: Comparing Load Test Tools](https://www.baeldung.com/gatling-jmeter-grinder-comparison)

testing-modules/spring-testing/README.md

@@ -2,3 +2,4 @@
 
 - [Mockito.mock() vs @Mock vs @MockBean](http://www.baeldung.com/java-spring-mockito-mock-mockbean)
 - [A Quick Guide to @TestPropertySource](https://www.baeldung.com/spring-test-property-source)
+- [Guide to ReflectionTestUtils for Unit Testing](https://www.baeldung.com/spring-reflection-test-utils)