JAVA-11499 move rxjava* modules to new rxjava-modules (#12342)

* JAVA-11499 move rxjava* modules to new rxjava-modules

* JAVA-11499 addressed PR comments

rxjava-modules/rxjava-libraries/src/main/java/com/baeldung/rxjava/RandomRelay.java

@@ -0,0 +1,32 @@
+package com.baeldung.rxjava;
+
+import com.jakewharton.rxrelay2.Relay;
+import io.reactivex.Observer;
+import io.reactivex.disposables.Disposables;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+public class RandomRelay extends Relay<Integer> {
+    Random random = new Random();
+
+    List<Observer<? super Integer>> observers = new ArrayList<>();
+
+    @Override
+    public void accept(Integer integer) {
+        int observerIndex = random.nextInt(observers.size()) & Integer.MAX_VALUE;
+        observers.get(observerIndex).onNext(integer);
+    }
+
+    @Override
+    public boolean hasObservers() {
+        return observers.isEmpty();
+    }
+
+    @Override
+    protected void subscribeActual(Observer<? super Integer> observer) {
+        observers.add(observer);
+        observer.onSubscribe(Disposables.fromRunnable(() -> System.out.println("Disposed")));
+    }
+}

rxjava-modules/rxjava-libraries/src/main/java/com/baeldung/rxjava/jdbc/Connector.java

@@ -0,0 +1,13 @@
+package com.baeldung.rxjava.jdbc;
+
+import com.github.davidmoten.rx.jdbc.ConnectionProvider;
+import com.github.davidmoten.rx.jdbc.ConnectionProviderFromUrl;
+
+class Connector {
+
+    private static final String DB_CONNECTION = "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1";
+    private static final String DB_USER = "";
+    private static final String DB_PASSWORD = "";
+
+    static final ConnectionProvider connectionProvider = new ConnectionProviderFromUrl(DB_CONNECTION, DB_USER, DB_PASSWORD);
+}

rxjava-modules/rxjava-libraries/src/main/java/com/baeldung/rxjava/jdbc/Employee.java

@@ -0,0 +1,13 @@
+package com.baeldung.rxjava.jdbc;
+
+import com.github.davidmoten.rx.jdbc.annotations.Column;
+
+public interface Employee {
+
+    @Column("id")
+    int id();
+
+    @Column("name")
+    String name();
+    
+}

rxjava-modules/rxjava-libraries/src/main/java/com/baeldung/rxjava/jdbc/Manager.java

@@ -0,0 +1,28 @@
+package com.baeldung.rxjava.jdbc;
+
+public class Manager {
+
+    private int id;
+    private String name;
+
+    public Manager(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

rxjava-modules/rxjava-libraries/src/main/java/com/baeldung/rxjava/jdbc/Utils.java

@@ -0,0 +1,16 @@
+package com.baeldung.rxjava.jdbc;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.StringWriter;
+
+import org.apache.commons.io.IOUtils;
+
+class Utils {
+
+    static String getStringFromInputStream(InputStream input) throws IOException {
+        StringWriter writer = new StringWriter();
+        IOUtils.copy(input, writer, "UTF-8");
+        return writer.toString();
+    }
+}