jcr/org.argeo.cms.jcr/src/org/argeo/cms/jcr/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.spi.ContentProvider;
  17 import org.argeo.api.acr.spi.ProvidedContent;
  18 import org.argeo.api.acr.spi.ProvidedSession;
  19 import org.argeo.api.cms.CmsConstants;
  20 import org.argeo.cms.acr.ContentUtils;
  21 import org.argeo.cms.jcr.CmsJcrUtils;
  22 import org.argeo.jcr.JcrException;
  23 import org.argeo.jcr.JcrUtils;
  24
  25 /** A JCR workspace accessed as an {@link ContentProvider}. */
  26 public class JcrContentProvider implements ContentProvider, NamespaceContext {
  27
  28         private Repository jcrRepository;
  29         private Session adminSession;
  30
  31         private String mountPath;
  32
  33         private Map<ProvidedSession, JcrSessionAdapter> sessionAdapters = Collections.synchronizedMap(new HashMap<>());
  34
  35         public void start(Map<String, String> properties) {
  36                 mountPath = properties.get(CmsConstants.ACR_MOUNT_PATH);
  37                 if ("/".equals(mountPath))
  38                         throw new IllegalArgumentException("JCR content provider cannot be root /");
  39                 Objects.requireNonNull(mountPath);
  40                 adminSession = CmsJcrUtils.openDataAdminSession(jcrRepository, null);
  41         }
  42
  43         public void stop() {
  44                 if (adminSession.isLive())
  45                         JcrUtils.logoutQuietly(adminSession);
  46         }
  47
  48         public void setJcrRepository(Repository jcrRepository) {
  49                 this.jcrRepository = jcrRepository;
  50         }
  51
  52         @Override
  53         public ProvidedContent get(ProvidedSession contentSession, String relativePath) {
  54                 String jcrWorkspace = ContentUtils.getParentPath(mountPath)[1];
  55                 String jcrPath = "/" + relativePath;
  56                 return new JcrContent(contentSession, this, jcrWorkspace, jcrPath);
  57         }
  58
  59         @Override
  60         public boolean exists(ProvidedSession contentSession, String relativePath) {
  61                 String jcrWorkspace = ContentUtils.getParentPath(mountPath)[1];
  62                 String jcrPath = "/" + relativePath;
  63                 return new JcrContent(contentSession, this, jcrWorkspace, jcrPath).exists();
  64         }
  65
  66         public Session getJcrSession(ProvidedSession contentSession, String jcrWorkspace) {
  67                 JcrSessionAdapter sessionAdapter = sessionAdapters.get(contentSession);
  68                 if (sessionAdapter == null) {
  69                         final JcrSessionAdapter newSessionAdapter = new JcrSessionAdapter(jcrRepository, contentSession,
  70                                         contentSession.getSubject());
  71                         sessionAdapters.put(contentSession, newSessionAdapter);
  72                         contentSession.onClose().thenAccept((s) -> newSessionAdapter.close());
  73                         sessionAdapter = newSessionAdapter;
  74                 }
  75
  76                 Session jcrSession = sessionAdapter.getSession(jcrWorkspace);
  77                 return jcrSession;
  78         }
  79
  80         public Session getJcrSession(Content content, String jcrWorkspace) {
  81                 return getJcrSession(((ProvidedContent) content).getSession(), jcrWorkspace);
  82         }
  83
  84         @Override
  85         public String getMountPath() {
  86                 return mountPath;
  87         }
  88
  89         /*
  90          * NAMESPACE CONTEXT
  91          */
  92         @Override
  93         public String getNamespaceURI(String prefix) {
  94                 try {
  95                         return adminSession.getNamespaceURI(prefix);
  96                 } catch (RepositoryException e) {
  97                         throw new JcrException(e);
  98                 }
  99         }
 100
 101         @Override
 102         public String getPrefix(String namespaceURI) {
 103                 try {
 104                         return adminSession.getNamespacePrefix(namespaceURI);
 105                 } catch (RepositoryException e) {
 106                         throw new JcrException(e);
 107                 }
 108         }
 109
 110         @Override
 111         public Iterator<String> getPrefixes(String namespaceURI) {
 112                 try {
 113                         return Arrays.asList(adminSession.getNamespacePrefix(namespaceURI)).iterator();
 114                 } catch (RepositoryException e) {
 115                         throw new JcrException(e);
 116                 }
 117         }
 118
 119 }