org.argeo.cms.ui/src/org/argeo/cms/ui/jcr/DefaultRepositoryRegister.java

   1 package org.argeo.cms.ui.jcr;
   2
   3 import java.util.Collections;
   4 import java.util.Map;
   5 import java.util.Observable;
   6 import java.util.TreeMap;
   7
   8 import javax.jcr.Repository;
   9 import javax.jcr.RepositoryException;
  10
  11 import org.apache.commons.logging.Log;
  12 import org.apache.commons.logging.LogFactory;
  13 import org.argeo.api.NodeConstants;
  14
  15 public class DefaultRepositoryRegister extends Observable implements RepositoryRegister {
  16         /** Key for a JCR repository alias */
  17         private final static String CN = NodeConstants.CN;
  18         /** Key for a JCR repository URI */
  19         // public final static String JCR_REPOSITORY_URI = "argeo.jcr.repository.uri";
  20         private final static Log log = LogFactory.getLog(DefaultRepositoryRegister.class);
  21
  22         /** Read only map which will be directly exposed. */
  23         private Map<String, Repository> repositories = Collections.unmodifiableMap(new TreeMap<String, Repository>());
  24
  25         @SuppressWarnings("rawtypes")
  26         public synchronized Repository getRepository(Map parameters) throws RepositoryException {
  27                 if (!parameters.containsKey(CN))
  28                         throw new RepositoryException("Parameter " + CN + " has to be defined.");
  29                 String alias = parameters.get(CN).toString();
  30                 if (!repositories.containsKey(alias))
  31                         throw new RepositoryException("No repository registered with alias " + alias);
  32
  33                 return repositories.get(alias);
  34         }
  35
  36         /** Access to the read-only map */
  37         public synchronized Map<String, Repository> getRepositories() {
  38                 return repositories;
  39         }
  40
  41         /** Registers a service, typically called when OSGi services are bound. */
  42         @SuppressWarnings("rawtypes")
  43         public synchronized void register(Repository repository, Map properties) {
  44                 String alias;
  45                 if (properties == null || !properties.containsKey(CN)) {
  46                         log.warn("Cannot register a repository if no " + CN + " property is specified.");
  47                         return;
  48                 }
  49                 alias = properties.get(CN).toString();
  50                 Map<String, Repository> map = new TreeMap<String, Repository>(repositories);
  51                 map.put(alias, repository);
  52                 repositories = Collections.unmodifiableMap(map);
  53                 setChanged();
  54                 notifyObservers(alias);
  55         }
  56
  57         /** Unregisters a service, typically called when OSGi services are unbound. */
  58         @SuppressWarnings("rawtypes")
  59         public synchronized void unregister(Repository repository, Map properties) {
  60                 // TODO: also check bean name?
  61                 if (properties == null || !properties.containsKey(CN)) {
  62                         log.warn("Cannot unregister a repository without property " + CN);
  63                         return;
  64                 }
  65
  66                 String alias = properties.get(CN).toString();
  67                 Map<String, Repository> map = new TreeMap<String, Repository>(repositories);
  68                 if (map.remove(alias) == null) {
  69                         log.warn("No repository was registered with alias " + alias);
  70                         return;
  71                 }
  72                 repositories = Collections.unmodifiableMap(map);
  73                 setChanged();
  74                 notifyObservers(alias);
  75         }
  76 }