Somewhere someone is trying to cast a String to a String[]? Don't know the API at all but looks like gogoFunctions and/or FUNCTIONS might be culprits??
Regards, Per-Erik Svensson On Thu, Jun 16, 2011 at 7:35 AM, 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> >
