![Calling scripts from Java import javax.scripting.* String fLocation = "/OOW-2006-Scripting//customer-validation.js"; ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName(" JavaScript "); engine.eval(new InputStreamReader( new FileInputStream(fLocation))); inv = ( Invocable ) engine; inv. invoke ("getCustomerDiscount", new Object[] {customerType} ); Java 6 Build In Feature](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-10-2048.jpg)
![Simple Example Java Code public class FilterApp { public static void main(String[] args) { List<String> list = new ArrayList(); list.add("Olaf"); list.add("Tug"); list.add("John"); list.add("Dave"); FilterApp filter = new FilterApp(); List<String> data = filter.filterLongerThan(list,4); System.out.println(data.size()); Iterator it = data.iterator(); while (it.hasNext()) {System.out.println(it.next());} } public List filterLongerThan(List list, int length) { List<String> result = new ArrayList(); Iterator it = list.iterator(); while (it.hasNext()) { String item = (String)it.next(); if (item.length()>= length) {result.add(item);} } return result; } }](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-12-2048.jpg)
![Simple Example Groovy Code def list = ["Olaf","Tug","John","Dave"] def data = list.findAll { it.size() >= 4 } println data.size() data.each { println it } Java 25-30 Lines / Groovy 4 lines](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-13-2048.jpg)
![Groovy Features Dynamic and (optional) static typing int a = 2 def str = "Hello" Native syntax for lists, maps, arrays, beans, etc. def list = ["Rod", 3, new Date()] def myMap = [Neeta:32, Eric:34] Closures myMap.each( {name, age -> println "$name is $age years old" }) >Eric is 34 years old >Neeta is 32 years old](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-14-2048.jpg)
![Groovy Features (Cont.) Regex built-in if ( "name" ==~ "na.*" ) { println "match!" } -> match! Operator overloading def list = [1, 2, 3] + [4, 5, 6] list.each { print it } -> 123456 Autoboxing and polymorphism across collection, array, map, bean, String, iterators, etc. String[] array = ['cat', 'dog', 'mouse'] def str = 'hello' Println"${array.size()},${str.size()}, ${list.size()} -> 3,5,6](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-15-2048.jpg)
![Groovy SQL Easy RDBMS Access Easy to use JDBC software thanks to closures def sql = Sql.newInstance(url, usr, pwd, driver) sql.execute("insert into table values ($foo, $bar)") sql.execute("insert into table values(?,?)", [a, b]) sql.eachRow("select * from EMPLOYEES") { print it.name } def list = sql.rows("select * from EMPLOYEES") DataSet notion: poor-man ORM def set = sql.dataSet("EMPLOYEES") set.add(name: "Johnny", age: 33) set.each { user -> println user.name } set.findAll { it.age > 22 && it.age < 42 }](https://image.slidesharecdn.com/scriptingoracledevelop2007-1211702023035271-8/75/Scripting-Oracle-Develop-2007-17-2048.jpg)
Uploaded byTugdual Grall
Scripting Oracle Develop 2007
- Scripting languages like PHP, Python, and Ruby are becoming increasingly popular for web application development and administrative tasks due to their simplicity. - Java is embracing dynamic scripting languages through standards like JSR 223 which allows scripts like JavaScript, Groovy, and BeanShell to be integrated with Java applications and the Java platform. - Groovy is a popular Java-based scripting language that can be used to simplify and accelerate enterprise development by reducing code length and improving productivity.
Scripting Oracle Develop 2007
- 1. Simplify Enterprise Developmentwith Scripting Tugdual Grall Principal Product Manager Oracle Application Server
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- 3. Scripting Strikes Back<Insert Picture Here>
- 4. Scripts are backScripting: PHP, Ruby On Rails for Web Application Development Python, Perl for administrative tasks in the browser when doing AJAX applications JCP agreed to standardize Groovy (JSR 241) and BeanShell (JSR 274) Upcoming bytecode invokeDynamic (JSR 292) Sun hires JRuby project leader,Microsoft IronPython leader, and also created JavaFX Need simplicity to overcome enterprise development complexity Extensibility using Domain Specific Languages (DSL)
- 5. What scripts aregood for? The main use cases of integration Prototyping/Testing Shell or build scripts, data manipulation, unit testing, code generation driving native applications Building Standalone applications Small to mid-sized non-critical applications Integrating Scripting in Java EE applications Programmatic configuration Business Rules Externalization UI or Applications customizations
- 6. Java and ScriptingJava is a platform with a default language named Java.... Leveraging the Java platform with a dynamic language Access all JavaEE resources Reuse existing API of the Java Platform Java & Scripting standardization A new JSR to integrate scripts with Java: JSR 223 Language specific JSRL Groovy (JSR 241), BeanShell Javascript is now part of Java (Java 6) using JSR 223
- 7. Java and Scripting Many languages exist Javascript/Rhino Ruby/JRuby Python/Jython JudoScript BeanShell PNuts Tcl/Jacl Groovy Quercus FScript Sleep Bambookit ObjectScript Jickle Yoix Simkin BSF Dawn DynamicJava W4F Netscript PolyJsp FESI iScript
- 8. Java and ScriptingIn this talk.... Javascript Javascript is part of the new Java SE 6 environment Based on the Rhino project Groovy Open Source language Grails Open Source Web Application Development framework
- 9. Demonstration: Using Javascriptin Java 6 <Insert Picture Here>
- 10. Calling scripts fromJava import javax.scripting.* String fLocation = "/OOW-2006-Scripting//customer-validation.js"; ScriptEngineManager manager = new ScriptEngineManager(); ScriptEngine engine = manager.getEngineByName(" JavaScript "); engine.eval(new InputStreamReader( new FileInputStream(fLocation))); inv = ( Invocable ) engine; inv. invoke ("getCustomerDiscount", new Object[] {customerType} ); Java 6 Build In Feature
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- 12. Simple Example Java Code public class FilterApp { public static void main(String[] args) { List<String> list = new ArrayList(); list.add("Olaf"); list.add("Tug"); list.add("John"); list.add("Dave"); FilterApp filter = new FilterApp(); List<String> data = filter.filterLongerThan(list,4); System.out.println(data.size()); Iterator it = data.iterator(); while (it.hasNext()) {System.out.println(it.next());} } public List filterLongerThan(List list, int length) { List<String> result = new ArrayList(); Iterator it = list.iterator(); while (it.hasNext()) { String item = (String)it.next(); if (item.length()>= length) {result.add(item);} } return result; } }
- 13. Simple Example GroovyCode def list = ["Olaf","Tug","John","Dave"] def data = list.findAll { it.size() >= 4 } println data.size() data.each { println it } Java 25-30 Lines / Groovy 4 lines
- 14. Groovy Features Dynamicand (optional) static typing int a = 2 def str = "Hello" Native syntax for lists, maps, arrays, beans, etc. def list = ["Rod", 3, new Date()] def myMap = [Neeta:32, Eric:34] Closures myMap.each( {name, age -> println "$name is $age years old" }) >Eric is 34 years old >Neeta is 32 years old
- 15. Groovy Features (Cont.)Regex built-in if ( "name" ==~ "na.*" ) { println "match!" } -> match! Operator overloading def list = [1, 2, 3] + [4, 5, 6] list.each { print it } -> 123456 Autoboxing and polymorphism across collection, array, map, bean, String, iterators, etc. String[] array = ['cat', 'dog', 'mouse'] def str = 'hello' Println"${array.size()},${str.size()}, ${list.size()} -> 3,5,6
- 16. Groovy Markup NativeSupport for Markup Languages Native support for hierarchical structures in code XML XHTML Ant Swing SWT Relatively easy to add your own
- 17. Groovy SQL EasyRDBMS Access Easy to use JDBC software thanks to closures def sql = Sql.newInstance(url, usr, pwd, driver) sql.execute("insert into table values ($foo, $bar)") sql.execute("insert into table values(?,?)", [a, b]) sql.eachRow("select * from EMPLOYEES") { print it.name } def list = sql.rows("select * from EMPLOYEES") DataSet notion: poor-man ORM def set = sql.dataSet("EMPLOYEES") set.add(name: "Johnny", age: 33) set.each { user -> println user.name } set.findAll { it.age > 22 && it.age < 42 }
- 18. Demonstration: Samples Applications<Insert Picture Here>
- 19. Administer OracleAS withScripts Integrating JMX and Groovy Java Application Console
- 20. What is anMBean MBean is an embedded Java Object that instruments a Java application It enables management tools to remotely administer a Java Application Java Application MBean Management Tool
- 21. Demonstration: Administer OracleASwith Scripts & Groovier ADF-BC Groovier ADF-BC <Insert Picture Here>
- 22. Administration Using ScriptsAdminister your server with the power of Java and the Simplicity of Groovy Automate all repetitive tasks Glue administrative tasks easily Extend the administration capability with custom scripts client = new OC4JClient() client.connect("localhost","23791","oc4jadmin","welcome1") defaultApp = client.helper.createGroovyMBean(client.helper.DEFAULTAPP_MBEAN_NAME); println "\n--> Create ConnectionPool" defaultApp.createJDBCConnectionPool("MyPool", "oracle.jdbc.pool.OracleDataSource", "scott", "tiger", "jdbc:oracle:thin:@localhost:1521:xe")
- 23. Standardization & IntegrationJSR 223: Scripting for the Java Platform <Insert Picture Here>
- 24. JSR 223: Scriptingfor the Java Platform One API to rule them all! JSE 6 includes JSR 223 and embeds JavaScript RI already usable starting from JDK 1.4 With Groovy, PHP, and Rhino ScriptEngines provide a common way to integrate stateful interpreters into Java Invocable and Compilable interfaces extend ScriptEngines to support generic function invocations and compilation of scripts
- 25. Easy Development Usedynamic languages to build Web Applications <Insert Picture Here>
- 26. Rapid Application DevelopmentThe main use cases of integration Convention over configuration Leverage Dynamic nature of the languages Imposes strong design constraints Generators for creating code skeletons and scaffolding CRUD oriented ( C reate R ead U pdate D elete)
- 27. Introduction to *Rails Ruby On Rails and Grails overview Ruby On Rails Grails aka: RoR & Rails Convention over ConfigurationDon’t Repeat Yourself (DRY)Based on Ruby Deployed as CGI/Fast CGI or in its own server (WEBRick) ... JRuby/JRubyOnRails... Inspired by RoRDon’t Repeat Yourself (DRY)Based on Groovy Leverage Java EE platform, Spring and other frameworks Deployed as Java Web Applications
- 28. Grails Project Infrastructure+ PROJECT_HOME + grails-app + conf + controllers + domain + i18n + services + taglib + views + lib + spring + hibernate + src + web-app + PROJECT_HOME + grails-app + conf + controllers + domain + i18n + services + taglib + views + lib + spring + hibernate + src + web-app Main Grails resources Additional Spring configuration Web resources e.g. CSS, JavaScript etc. Java sources Jar archive libraries
- 29. Demonstration: Create Applicationwith Grails <Insert Picture Here>
- 30. Rapid Application DevelopmentSummary Development is really fast Leverage WEB 2.0 AJAX is built-in rapid and iterative development integrated testing framework However, for large scale applications static-typing and IDE support is crucial Provides the ability to use a blended approach Think about the deployment and management in the beginning Grails leverages the JVM, JavaEE and run in an Application Server
- 31. Summary Scripting technologiesfacilitate development Rapid integration of existing components Choose your language based on your skills (eg: expert in Python... use Jython) target: stand-alone, embedded in Java application, ... RAD of Web Application leverage scripting to build applications Dynamic languages are now mainstream JSR 223 Javscript in Java SE 6 More to come in next releases
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