acr/JcrContentProvider.java

   1 package org.argeo.cms.jcr.acr;
   2
   3 import java.util.Arrays;
   4 import java.util.Collections;
   5 import java.util.HashMap;
   6 import java.util.Iterator;
   7 import java.util.Map;
   8 import java.util.Objects;
   9
  10 import javax.jcr.Repository;
  11 import javax.jcr.RepositoryException;
  12 import javax.jcr.Session;
  13 import javax.xml.namespace.NamespaceContext;
  14
  15 import org.argeo.api.acr.Content;
  16 import org.argeo.api.acr.ContentUtils;
  17 import org.argeo.api.acr.spi.ContentProvider;
  18 import org.argeo.api.acr.spi.ProvidedSession;
  19 import org.argeo.cms.acr.CmsContentRepository;
  20 import org.argeo.cms.jcr.CmsJcrUtils;
  21 import org.argeo.jcr.JcrException;
  22 import org.argeo.jcr.JcrUtils;
  23
  24 /** A JCR workspace accessed as an {@link ContentProvider}. */
  25 public class JcrContentProvider implements ContentProvider, NamespaceContext {
  26         private Repository jcrRepository;
  27         private Session adminSession;
  28
  29         private String mountPath;
  30
  31         private Map<ProvidedSession, JcrSessionAdapter> sessionAdapters = Collections.synchronizedMap(new HashMap<>());
  32
  33         public void start(Map<String, String> properties) {
  34                 mountPath = properties.get(CmsContentRepository.ACR_MOUNT_PATH_PROPERTY);
  35                 Objects.requireNonNull(mountPath);
  36                 adminSession = CmsJcrUtils.openDataAdminSession(jcrRepository, null);
  37         }
  38
  39         public void stop() {
  40                 JcrUtils.logoutQuietly(adminSession);
  41         }
  42
  43         public void setJcrRepository(Repository jcrRepository) {
  44                 this.jcrRepository = jcrRepository;
  45         }
  46
  47         @Override
  48         public Content get(ProvidedSession contentSession, String mountPath, String relativePath) {
  49                 String jcrWorkspace = ContentUtils.getParentPath(mountPath)[1];
  50                 String jcrPath = "/" + relativePath;
  51                 return new JcrContent(contentSession, this, jcrWorkspace, jcrPath);
  52         }
  53
  54         public Session getJcrSession(ProvidedSession contentSession, String jcrWorkspace) {
  55                 JcrSessionAdapter sessionAdapter = sessionAdapters.get(contentSession);
  56                 if (sessionAdapter == null) {
  57                         final JcrSessionAdapter newSessionAdapter = new JcrSessionAdapter(jcrRepository,
  58                                         contentSession.getSubject());
  59                         sessionAdapters.put(contentSession, newSessionAdapter);
  60                         contentSession.onClose().thenAccept((s) -> newSessionAdapter.close());
  61                         sessionAdapter = newSessionAdapter;
  62                 }
  63
  64                 Session jcrSession = sessionAdapter.getSession(jcrWorkspace);
  65                 return jcrSession;
  66         }
  67
  68         @Override
  69         public String getMountPath() {
  70                 return mountPath;
  71         }
  72
  73         /*
  74          * NAMESPACE CONTEXT
  75          */
  76         @Override
  77         public String getNamespaceURI(String prefix) {
  78                 try {
  79                         return adminSession.getNamespaceURI(prefix);
  80                 } catch (RepositoryException e) {
  81                         throw new JcrException(e);
  82                 }
  83         }
  84
  85         @Override
  86         public String getPrefix(String namespaceURI) {
  87                 try {
  88                         return adminSession.getNamespacePrefix(namespaceURI);
  89                 } catch (RepositoryException e) {
  90                         throw new JcrException(e);
  91                 }
  92         }
  93
  94         @Override
  95         public Iterator<String> getPrefixes(String namespaceURI) {
  96                 try {
  97                         return Arrays.asList(adminSession.getNamespacePrefix(namespaceURI)).iterator();
  98                 } catch (RepositoryException e) {
  99                         throw new JcrException(e);
 100                 }
 101         }
 102
 103 }