Hmmm this seems to be a limitation of the iPojo @ServiceProperty annotation.
You don't actually need the gogo help command to test your example. another command which will show the existence of your search command is 'type': g! type search search is Set<Book> book:search(String, String, String, String) search is Set<Book> book:search(String, String, String, int, int) You should be able to invoke it directly: g! search args ... Derek On 16 June 2011 09:58, Mike Veksler <[email protected]> wrote: > I tried registing FUNCTIONS however the annotation expects String value and > not String array. > > On Thu, Jun 16, 2011 at 1:55 AM, Derek Baum <[email protected]> > wrote: > > > This is a bug in the gogo help command. > > > > Services proving commands can be registered with > > @ServiceProperty(name = "osgi.command.function", functions) > > > > where functions is either String or String[]. > > > > The gogo help command does not take account of this being a String rather > > than String[]. > > > > The quick fix for now is to register FUNCTIONS rather than FUNCTIONS_STR. > > > > I'll raise an issue to fix the gogo help command. > > > > Derek > > > > > > On 16 June 2011 09:46, Mike Veksler <[email protected]> wrote: > > > > > Here is the stack trace: > > > g! e > > > java.lang.ClassCastException: java.lang.String cannot be cast to > > > [Ljava.lang.String; > > > at > org.apache.felix.gogo.command.Basic.getCommands(Basic.java:384) > > > at org.apache.felix.gogo.command.Basic.help(Basic.java:211) > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > > > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > Source) > > > at java.lang.reflect.Method.invoke(Unknown Source) > > > at > > > org.apache.felix.gogo.runtime.Reflective.method(Reflective.java:136) > > > at > > > > org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:82) > > > at > > > org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:469) > > > at > > > > org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:395) > > > at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108) > > > at > org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183) > > > at > org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120) > > > at > > > > > > > > > org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.jav > > > a:89) > > > at org.apache.felix.gogo.shell.Console.run(Console.java:62) > > > at org.apache.felix.gogo.shell.Shell.console(Shell.java:203) > > > at org.apache.felix.gogo.shell.Shell.gosh(Shell.java:128) > > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > > > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > Source) > > > at java.lang.reflect.Method.invoke(Unknown Source) > > > at > > > org.apache.felix.gogo.runtime.Reflective.method(Reflective.java:136) > > > at > > > > org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:82) > > > at > > > org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:469) > > > at > > > > org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:395) > > > at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108) > > > at > org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183) > > > at > org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120) > > > at > > > > > > > > > org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.jav > > > a:89) > > > at > > > org.apache.felix.shell.remote.Shell.startGogoShell(Shell.java:108) > > > at org.apache.felix.shell.remote.Shell.run(Shell.java:81) > > > at java.lang.Thread.run(Unknown Source) > > > g! > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Thu, Jun 16, 2011 at 1:39 AM, Derek Baum <[email protected]> > > > wrote: > > > > > > > Have you got a stack trace? > > > > > > > > Type 'e' in gogo after an exception is reported to see the stack > trace > > > > > > > > 'e' is actually a function: > > > > g! type e > > > > e is function { $exception printStackTrace } > > > > > > > > which simply invokes the printStackTrace() method on the Exception > > object > > > > stored in the gogo exception variable. > > > > > > > > Derek > > > > > > > > On 16 June 2011 06:35, Mike Veksler <[email protected]> wrote: > > > > > > > > > I am trying to go through tutorial from OSGI and Apache Felix 3.0 > > book > > > > and > > > > > one of the the examples is to use IPOJO Annotation and Meta.xml. > When > > I > > > > > deploy application to Felix the application runs fine but if i try > to > > > > > lookup > > > > > help iside Felix Gogo shell, I get error: gogo: ClassCastException: > > > > > java.lang.String cannot be cast to [Ljava.lang.String; > > > > > > > > > > Here is the code with annotation: > > > > > > > > > > package com.packtpub.felix.bookshelf.service.tui; > > > > > > > > > > import com.packtpub.felix.bookshelf.inventory.api.Book; > > > > > import > > > > > > > com.packtpub.felix.bookshelf.inventory.api.BookAlreadyExistsException; > > > > > import > > > com.packtpub.felix.bookshelf.inventory.api.BookNotFoundException; > > > > > import > > com.packtpub.felix.bookshelf.inventory.api.InvalidBookException; > > > > > import com.packtpub.felix.bookshelf.service.api.BookshelfService; > > > > > import > > > > > > com.packtpub.felix.bookshelf.service.api.InvalidCredentialsException; > > > > > import > > > > com.packtpub.felix.bookshelf.service.tui.api.BookshelfServiceProxy; > > > > > import org.apache.felix.ipojo.annotations.Component; > > > > > import org.apache.felix.ipojo.annotations.Provides; > > > > > import org.apache.felix.ipojo.annotations.Requires; > > > > > import org.apache.felix.ipojo.annotations.ServiceProperty; > > > > > import org.apache.felix.service.command.Descriptor; > > > > > //import org.osgi.framework.BundleContext; > > > > > import org.osgi.framework.ServiceReference; > > > > > > > > > > import java.util.HashSet; > > > > > import java.util.Set; > > > > > > > > > > > > > > > @Component(name = "BookshelfServiceProxy") > > > > > @Provides > > > > > public class BookshelfServiceProxyImpl implements > > > BookshelfServiceProxy{ > > > > > public static final String SCOPE = "book"; > > > > > > > > > > @ServiceProperty(name = "osgi.command.scope", value = SCOPE) > > > > > public String gogoScope; > > > > > > > > > > public static final String[] FUNCTIONS = new String[] { > > > > > "add", "search" > > > > > }; > > > > > > > > > > public static final String FUNCTIONS_STR ="search"; > > > > > @ServiceProperty(name = "osgi.command.function", value = > > > > FUNCTIONS_STR) > > > > > public String gogoFunctions; > > > > > > > > > > //private BundleContext context; > > > > > @Requires > > > > > private BookshelfService bookshelf; > > > > > > > > > > // public BookshelfServiceProxyImpl(BundleContext context){ > > > > > // this.context = context; > > > > > // } > > > > > public BookshelfServiceProxyImpl(){ > > > > > } > > > > > > > > > > @Descriptor("Search books by author, title, or category") > > > > > public Set<Book> search( > > > > > @Descriptor("username") > > > > > String username, > > > > > @Descriptor("password") > > > > > String password, > > > > > @Descriptor( > > > > > "search on attribute: author, title, or > category" > > > > > ) > > > > > String attribute, > > > > > @Descriptor( > > > > > "match like (use % at the beginning or end of > > > <like>" > > > > + > > > > > " for wild-card)") > > > > > String filter) throws InvalidCredentialsException{ > > > > > > > > > > BookshelfService service = lookupService(); > > > > > > > > > > String sessionid = > > > service.login(username,password.toCharArray()); > > > > > Set<String> results; > > > > > > > > > > if("title".equals(attribute)){ > > > > > results = service.searchBooksByTitle(sessionid,filter); > > > > > } > > > > > else if("author".equals(attribute)){ > > > > > results = service.searchBooksByAuthor(sessionid,filter); > > > > > } > > > > > else if("category".equals(attribute)){ > > > > > results = > service.searchBooksByCategory(sessionid,filter); > > > > > } > > > > > else{ > > > > > throw new RuntimeException( > > > > > "Invalid attribute, expecting one of { 'title', > " > > + > > > > > "'author', 'category' } got > > > '"+attribute+"'"); > > > > > } > > > > > return getBooks(sessionid,service,results); > > > > > > > > > > } > > > > > > > > > > @Descriptor("Search books by rating") > > > > > public Set<Book> search( > > > > > @Descriptor("username") > > > > > String username, > > > > > @Descriptor("password") > > > > > String password, > > > > > @Descriptor("search on attribute rating") > > > > > String attribute, > > > > > @Descriptor("lower rating limit (inclusive)") > > > > > int lower, > > > > > @Descriptor("upper rating limit (inclusive)") > > > > > int upper) throws InvalidCredentialsException { > > > > > > > > > > if(!"rating".equals(attribute)){ > > > > > throw new RuntimeException( > > > > > "Invalid attribute, expecting 'rating' got '"+ > > > > > attribute+"'"); > > > > > } > > > > > > > > > > BookshelfService service = lookupService(); > > > > > String sessionid = > > > service.login(username,password.toCharArray()); > > > > > Set<String> results = > > > > > service.searchBooksByRating(sessionid,lower,upper); > > > > > return getBooks(sessionid,service,results); > > > > > } > > > > > > > > > > @Descriptor("Add book to the inventory") > > > > > public String add( > > > > > @Descriptor("username") String username, > > > > > @Descriptor("password") String password, > > > > > @Descriptor("ISBN") String isbn, > > > > > @Descriptor("Title") String title, > > > > > @Descriptor("Author") String author, > > > > > @Descriptor("Category") String category, > > > > > @Descriptor("Rating (0..10)") int rating) > > > > > throws InvalidCredentialsException, > > > > > BookAlreadyExistsException, > > > > > InvalidBookException{ > > > > > BookshelfService service = lookupService(); > > > > > String sessionId = > > > service.login(username,password.toCharArray()); > > > > > > service.addBook(sessionId,isbn,title,author,category,rating); > > > > > return isbn; > > > > > } > > > > > > > > > > private BookshelfService lookupService(){ > > > > > // ServiceReference reference = context.getServiceReference( > > > > > // BookshelfService.class.getName()); > > > > > // if(reference==null){ > > > > > // throw new RuntimeException("BookshelfService not > > > > > registered,cannot invoke "+ > > > > > // "operation"); > > > > > // } > > > > > // BookshelfService service = (BookshelfService) > > > > > this.context.getService(reference); > > > > > // if(service==null){ > > > > > // throw new RuntimeException( > > > > > // "BookshelfService not registered, cannot > invoke > > > "+ > > > > > // "operation"); > > > > > // } > > > > > // return service; > > > > > return this.bookshelf; > > > > > } > > > > > > > > > > private Set<Book> getBooks( > > > > > String sessionid, BookshelfService service, > > > > > Set<String> results) { > > > > > Set<Book> books = new HashSet<Book>(); > > > > > for(String isbn: results){ > > > > > Book book; > > > > > try{ > > > > > book = service.getBook(sessionid,isbn); > > > > > books.add(book); > > > > > } catch (BookNotFoundException e) { > > > > > System.out.println("ISBN "+ isbn + > > > > > " referenced but not found"); > > > > > } > > > > > } > > > > > return books; > > > > > } > > > > > } > > > > > > > > > > > > > > > Here is meta.xml: > > > > > > > > > > <?xml version="1.0" encoding="UTF-8"?> > > > > > <ipojo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; > > > > > xsi:schemaLocation="org.apache.felix.ipojo > > > > > http://felix.apache.org/ipojo/schemas/CURRENT/core.xsd"; > > > > > xmlns="org.apache.felix.ipojo"> > > > > > > > > > > <instance component="BookshelfServiceProxy" > > > > > name="bookshelf.service.tui"/> > > > > > </ipojo> > > > > > > > > > > > > > > >
