for that URL 3. Server renders content to a response 4. User enjoys the content 5. Client is initialized 6. User nagivates to a different URL 7. Client fetches content for that URL 8. Client renders content to the DOM
5.1 compatibility plus language and api extensions ES6/ES2015 features come with Java 9 backports available compiles JavaScript to Java Bytecode providing interoperability of Java and JavaScript Shell scripting mode
Nashorn itself is not thread-safe by design Thread-safety depends on your code! Use a T h r e a d L o c a l < S c r i p t E n g i n g e > when your JS code is not thread-safe (i.e. React.js, Handlebars, etc.)
i o n i s P a s s w o r d V a l i d ( p a s s w o r d ) { v a r s c o r e = s c o r e P a s s w o r d S t r e n g t h ( p a s s w o r d ) ; r e t u r n s c o r e > = 3 ; } Java code: p u b l i c B o o l e a n i s P a s s w o r d V a l i d ( S t r i n g p a s s w o r d ) { t r y { r e t u r n ( B o o l e a n ) n a s h o r n . i n v o k e F u n c t i o n ( " i s P a s s w o r d V a l i d " , p a s s w o r d ) ; } c a t c h ( S c r i p t E x c e p t i o n | N o S u c h M e t h o d E x c e p t i o n e ) { t h r o w n e w R u n t i m e E x c e p t i o n ( e ) ; } }
just the "V" in MVC virtual DOM (updates via diffs - no flickering) supports server-side rendering "JavaScript library for building user interfaces" "The new star on the web-dev heaven" http://reactjs.org
e x t e n d s R e a c t . C o m p o n e n t { r e n d e r ( ) { r e t u r n ( ; } } < d i v c l a s s N a m e = " b o o k " > < h 3 > { t h i s . p r o p s . a u t h o r } < / h 3 > < d i v > { t h i s . p r o p s . t i t l e } < / d i v > < / d i v > ) JS v a r B o o k = R e a c t . c r e a t e C l a s s ( { d i s p l a y N a m e : " B o o k " , r e n d e r : f u n c t i o n ( ) { r e t u r n ( R e a c t . c r e a t e E l e m e n t ( " d i v " , { c l a s s N a m e : " b o o k " } , R e a c t . c r e a t e E l e m e n t ( " h 3 " , n u l l , t h i s . p r o p s . a u t h o r ) , R e a c t . c r e a t e E l e m e n t ( " d i v " , n u l l , t h i s . p r o p s . t i t l e ) ) ) ; } } ) ;
= " b o o k " d a t a - r e a c t i d = " . 1 . $ 0 " > < h 3 d a t a - r e a c t i d = " . 1 . $ 0 . 0 " > G e o r g e O r w e l l < / h 3 > < d i v c l a s s = " l e a d " d a t a - r e a c t i d = " . 1 . $ 0 . 1 " > 1 9 8 4 < / d i v > < / d i v > Transpile JSX to JS with Webpack & Babel https://webpack.github.io https://babeljs.io
l l e r @ P a t h ( " / r e a c t " ) p u b l i c c l a s s R e a c t C o n t r o l l e r { @ I n j e c t p r i v a t e M o d e l s m o d e l s ; @ I n j e c t p r i v a t e B o o k S e r v i c e s e r v i c e ; @ G E T p u b l i c S t r i n g i n d e x ( ) t h r o w s E x c e p t i o n { L i s t < B o o k > b o o k s = s e r v i c e . g e t B o o k s ( ) ; m o d e l s . p u t ( " d a t a " , b o o k s ) ; r e t u r n " r e a c t : r e a c t . j s p ? f u n c t i o n = r e n d e r S e r v e r " ; } } https://github.com/dasniko/ozark- react/blob/master/src/main/java/dasniko/ozark/react/ReactController.java
l a s s R e a c t V i e w E n g i n e e x t e n d s S e r v l e t V i e w E n g i n e { @ O v e r r i d e p u b l i c v o i d p r o c e s s V i e w ( V i e w E n g i n e C o n t e x t c o n t e x t ) t h r o w s V i e w E n g i n e E x c e p t i / / p a r s e v i e w a n d e x t r a c t t h e a c t u a l t e m p l a t e a n d t h e r e a c t . j s f u n c t i o n t S t r i n g v i e w = c o n t e x t . g e t V i e w ( ) ; / / r e a c t : r e a c t . j s p ? f u n c t i o n = r e n d e r S e r v e r S t r i n g t e m p l a t e = v i e w . s u b s t r i n g ( " r e a c t : " . l e n g t h ( ) , v i e w . i n d e x O f ( " ? " S t r i n g f u n c t i o n = v i e w . s u b s t r i n g ( v i e w . i n d e x O f ( " f u n c t i o n = " ) + 9 ) ; / / g e t " d a t a " f r o m m o d e l M o d e l s m o d e l s = c o n t e x t . g e t M o d e l s ( ) ; O b j e c t d a t a = m o d e l s . g e t ( " d a t a " ) ; / / c a l l g i v e n j s f u n c t i o n o n d a t a S t r i n g c o n t e n t = r e a c t . r e n d e r ( f u n c t i o n , d a t a ) ; / / a n d p u t r e s u l t s a s s t r i n g i n m o d e l m o d e l s . p u t ( " c o n t e n t " , c o n t e n t ) ; m o d e l s . p u t ( " d a t a " , m a p p e r . w r i t e V a l u e A s S t r i n g ( d a t a ) ) ; / / c r e a t e a n e w c o n t e x t w i t h t h e a c t u a l v i e w a n d f o r w a r d t o S e r v l e t V i e w E n V i e w E n g i n e C o n t e x t c t x = n e w V i e w E n g i n e C o n t e x t I m p l ( t e m p l a t e , m o d e l s , . . . ) ; t r y { f o r w a r d R e q u e s t ( c t x , " * . j s p " , " * . j s p x " ) ; } c a t c h ( S e r v l e t E x c e p t i o n | I O E x c e p t i o n e ) { https://github.com/dasniko/ozark-
T h r e a d L o c a l < S c r i p t E n g i n e > e n g i n e H o l d e r = T h r e a d L o c a l . w i t h I n i t i a l ( ( ) - S c r i p t E n g i n e e n g i n e = n e w S c r i p t E n g i n e M a n a g e r ( ) . g e t E n g i n e B y N a m e ( " n a s h o r n " e n g i n e . e v a l ( r e a d ( " n a s h o r n - p o l y f i l l . j s " ) ) ; e n g i n e . e v a l ( r e a d ( " a p p . j s " ) ) ; r e t u r n e n g i n e ; ) } ; p u b l i c S t r i n g r e n d e r ( S t r i n g f u n c t i o n , O b j e c t o b j e c t ) { O b j e c t h t m l = e n g i n e H o l d e r . g e t ( ) . i n v o k e F u n c t i o n ( f u n c t i o n , o b j e c t ) ; r e t u r n S t r i n g . v a l u e O f ( h t m l ) ; } https://github.com/dasniko/ozark-react/blob/master/src/main/java/dasniko/ozark/react/React.java
e n d e r C l i e n t = f u n c t i o n ( b o o k s ) { v a r d a t a = b o o k s | | [ ] ; R e a c t . r e n d e r ( ; } ; < B o o k B o x d a t a = { d a t a } u r l = ' b o o k s . j s o n ' p o l l I n t e r v a l = { 5 0 0 0 } / > , d o c u m e n t . g e t E l e m e n t B y I d ( " c o n t e n t " ) ) ; } ; v a r r e n d e r S e r v e r = f u n c t i o n ( b o o k s ) { v a r d a t a = J a v a . f r o m ( b o o k s ) ; r e t u r n R e a c t . r e n d e r T o S t r i n g ( < B o o k B o x d a t a = { d a t a } u r l = ' b o o k s . j s o n ' p o l l I n t e r v a l = { 5 0 0 0 } / > ) https://github.com/dasniko/ozark-react/blob/master/src/main/resources/jsx/index.jsx
you to combine the best of both worlds: Solutions for Java ecosystems are available evolves (React, Angular 2, Ember 2) server-side rendering and client-side RIA (Java EE MVC, Spring Boot MVC, Play Framework)
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