[jboss-cvs] jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/importers/metamodel ...

[Christian Bauer]

  User: cbauer  
  Date: 07/08/27 18:22:29

  Added:       examples/wiki/src/main/org/jboss/seam/wiki/core/importers/metamodel   
                        Importer.java AbstractImporter.java
                        ImporterRegistry.java
  Log:
  New file importer infrastructure plus first Zip/Jar file importer
  
  Revision  Changes    Path
  1.1      date: 2007/08/27 22:22:29;  author: cbauer;  state: Exp;jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/importers/metamodel/Importer.java
  
  Index: Importer.java
  ===================================================================
  package org.jboss.seam.wiki.core.importers.metamodel;
  
  import org.jboss.seam.wiki.core.importers.annotations.FileImporter;
  import org.jboss.seam.annotations.Name;
  
  public class Importer implements Comparable {
  
      private Class clazz;
      private String componentName;
      private String[] handledMimeTypes;
      private String[] handledExtensions;
      private String description;
  
      public Importer(Class<?> clazz) {
          this.clazz = clazz;
  
          this.componentName = clazz.getAnnotation(Name.class).value();
          this.handledMimeTypes = clazz.getAnnotation(FileImporter.class).handledMimeTypes();
          this.handledExtensions = clazz.getAnnotation(FileImporter.class).handledExtensions();
          this.description = clazz.getAnnotation(FileImporter.class).description();
      }
  
      public Class getClazz() {
          return clazz;
      }
  
      public String getComponentName() {
          return componentName;
      }
  
      public String[] getHandledMimeTypes() {
          return handledMimeTypes;
      }
  
      public String[] getHandledExtensions() {
          return handledExtensions;
      }
  
      public String getDescription() {
          return description;
      }
  
      public String toString() {
          return "importer class: " + getClazz().getName() + " mime type: " + getHandledMimeTypes() + " extension: " + getHandledExtensions();
      }
  
      public int compareTo(Object o) {
          Importer other = (Importer)o;
          return this.getDescription().compareTo(other.getDescription());
      }
  }
  
  
  
  1.1      date: 2007/08/27 22:22:29;  author: cbauer;  state: Exp;jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/importers/metamodel/AbstractImporter.java
  
  Index: AbstractImporter.java
  ===================================================================
  package org.jboss.seam.wiki.core.importers.metamodel;
  
  import org.jboss.seam.annotations.Observer;
  import org.jboss.seam.annotations.Scope;
  import org.jboss.seam.ScopeType;
  import org.jboss.seam.faces.FacesMessages;
  import org.jboss.seam.wiki.core.model.File;
  
  import javax.persistence.EntityManager;
  import java.util.Set;
  
  @Scope(ScopeType.APPLICATION)
  public abstract class AbstractImporter {
  
      @Observer("Importers.addImporter")
      public void add(Set<AbstractImporter> importerComponents) {
          importerComponents.add(this);
      }
  
      protected FacesMessages getFacesMessages() {
          return FacesMessages.instance();
      }
  
      public abstract boolean handleImport(EntityManager em, File file);
  
  }
  
  
  
  1.1      date: 2007/08/27 22:22:29;  author: cbauer;  state: Exp;jboss-seam/examples/wiki/src/main/org/jboss/seam/wiki/core/importers/metamodel/ImporterRegistry.java
  
  Index: ImporterRegistry.java
  ===================================================================
  package org.jboss.seam.wiki.core.importers.metamodel;
  
  import org.jboss.seam.annotations.Name;
  import org.jboss.seam.annotations.Scope;
  import org.jboss.seam.annotations.Logger;
  import org.jboss.seam.annotations.Observer;
  import org.jboss.seam.ScopeType;
  import org.jboss.seam.wiki.core.importers.annotations.FileImporter;
  import org.jboss.seam.core.Events;
  import org.jboss.seam.log.Log;
  
  import java.util.*;
  
  @Name("importerRegistry")
  @Scope(ScopeType.APPLICATION)
  public class ImporterRegistry {
  
      @Logger
      static Log log;
  
      Map<String, Importer> importersByName = new HashMap<String, Importer>();
      List<Importer> importers = new ArrayList<Importer>();
  
      @Observer("Wiki.started")
      public void scanForFileImporters() {
  
          log.debug("initializing file importer registry");
          importers.clear();
          importersByName.clear();
  
          // Fire an event and let all listeners add themself into the given collection
          Set<AbstractImporter> importerComponents = new HashSet<AbstractImporter>();
          Events.instance().raiseEvent("Importers.addImporter", importerComponents);
  
          log.debug("found file importer components: " + importerComponents.size());
  
          for (AbstractImporter importerComponent : importerComponents) {
              if (importerComponent.getClass().isAnnotationPresent(FileImporter.class)) {
                  Importer importer = new Importer(importerComponent.getClass());
                  importers.add(importer);
                  importersByName.put(importer.getComponentName(), importer);
              }
          }
          log.debug("added file importers to registry: " + importers.size());
  
          // Sort entities
          Collections.sort(importers);
  
          if (log.isTraceEnabled()) {
              for (Importer importer : importers) {
                  log.trace(importer);
              }
          }
      }
  
      public Map<String, Importer> getImportersByName() {
          return importersByName;
      }
  
      public List<Importer> getImporters() {
          return importers;
      }
  }