rxjava custom operator (#2352)

* minor logging fix

* spring security sso

* use basic auth

* use form login

* cleanup

* cleanup

* final cleanup

* second client app for sso

* spring boot bootstrap

* add logic

* cleanup

* add simple controller

* add thymeleaf and security

* minor fix

* minor fix

* add more boot properties

* fix live test

* fix live test

* minor fix

* semaphores

* fix configuration

* kotlin collection

* add more collection examples

* minor upgrade

* cucumber java8

* minor fix

* rxjava custom operator

rxjava/src/main/java/com/baelding/rxjava/operator/cleanString.java

@@ -0,0 +1,39 @@
+package com.baelding.rxjava.operator;
+
+import rx.Observable.Operator;
+import rx.Subscriber;
+
+public class cleanString implements Operator<String, String> {
+
+    public cleanString() {
+        super();
+    }
+
+    @Override
+    public Subscriber<? super String> call(final Subscriber<? super String> subscriber) {
+        return new Subscriber<String>(subscriber) {
+            @Override
+            public void onCompleted() {
+                if (!subscriber.isUnsubscribed()) {
+                    subscriber.onCompleted();
+                }
+            }
+
+            @Override
+            public void onError(Throwable t) {
+                if (!subscriber.isUnsubscribed()) {
+                    subscriber.onError(t);
+                }
+            }
+
+            @Override
+            public void onNext(String item) {
+                if (!subscriber.isUnsubscribed()) {
+                    final String result = item.replaceAll("[^A-Za-z0-9]", "");
+                    subscriber.onNext(result);
+                }
+            }
+        };
+    }
+
+}

rxjava/src/main/java/com/baelding/rxjava/operator/toLength.java

@@ -0,0 +1,22 @@
+package com.baelding.rxjava.operator;
+
+import rx.Observable;
+import rx.Observable.Transformer;
+import rx.functions.Func1;
+
+public class toLength implements Transformer<String, Integer> {
+    public toLength() {
+        super();
+    }
+
+    @Override
+    public Observable<Integer> call(Observable<String> source) {
+
+        return source.map(new Func1<String, Integer>() {
+            @Override
+            public Integer call(String str) {
+                return str.length();
+            }
+        });
+    }
+}