acr/CmsContentSession.java

   1 package org.argeo.cms.acr;
   2
   3 import java.util.Iterator;
   4 import java.util.Locale;
   5 import java.util.Map;
   6 import java.util.Set;
   7 import java.util.TreeSet;
   8 import java.util.UUID;
   9 import java.util.concurrent.CompletableFuture;
  10 import java.util.concurrent.CompletionStage;
  11 import java.util.function.Consumer;
  12 import java.util.stream.Collectors;
  13
  14 import javax.security.auth.Subject;
  15
  16 import org.argeo.api.acr.Content;
  17 import org.argeo.api.acr.ContentSession;
  18 import org.argeo.api.acr.CrName;
  19 import org.argeo.api.acr.NamespaceUtils;
  20 import org.argeo.api.acr.spi.ContentProvider;
  21 import org.argeo.api.acr.spi.ProvidedContent;
  22 import org.argeo.api.acr.spi.ProvidedRepository;
  23 import org.argeo.api.acr.spi.ProvidedSession;
  24 import org.argeo.cms.acr.xml.DomContentProvider;
  25
  26 /** Implements {@link ProvidedSession}. */
  27 class CmsContentSession implements ProvidedSession {
  28         final private AbstractContentRepository contentRepository;
  29
  30         private final UUID uuid;
  31         private Subject subject;
  32         private Locale locale;
  33
  34         private CompletableFuture<ProvidedSession> closed = new CompletableFuture<>();
  35
  36         private CompletableFuture<ContentSession> edition;
  37
  38         private Set<ContentProvider> modifiedProviders = new TreeSet<>();
  39
  40         private Content sessionRunDir;
  41
  42         public CmsContentSession(AbstractContentRepository contentRepository, UUID uuid, Subject subject, Locale locale) {
  43                 this.contentRepository = contentRepository;
  44                 this.subject = subject;
  45                 this.locale = locale;
  46                 this.uuid = uuid;
  47
  48         }
  49
  50         public void close() {
  51                 closed.complete(this);
  52
  53                 if (sessionRunDir != null)
  54                         sessionRunDir.remove();
  55         }
  56
  57         @Override
  58         public CompletionStage<ProvidedSession> onClose() {
  59                 return closed.minimalCompletionStage();
  60         }
  61
  62         @Override
  63         public Content get(String path) {
  64                 ContentProvider contentProvider = contentRepository.getMountManager().findContentProvider(path);
  65                 String mountPath = contentProvider.getMountPath();
  66                 String relativePath = extractRelativePath(mountPath, path);
  67                 ProvidedContent content = contentProvider.get(CmsContentSession.this, relativePath);
  68                 return content;
  69         }
  70
  71         @Override
  72         public boolean exists(String path) {
  73                 ContentProvider contentProvider = contentRepository.getMountManager().findContentProvider(path);
  74                 String mountPath = contentProvider.getMountPath();
  75                 String relativePath = extractRelativePath(mountPath, path);
  76                 return contentProvider.exists(this, relativePath);
  77         }
  78
  79         private String extractRelativePath(String mountPath, String path) {
  80                 String relativePath = path.substring(mountPath.length());
  81                 if (relativePath.length() > 0 && relativePath.charAt(0) == '/')
  82                         relativePath = relativePath.substring(1);
  83                 return relativePath;
  84         }
  85
  86         @Override
  87         public Subject getSubject() {
  88                 return subject;
  89         }
  90
  91         @Override
  92         public Locale getLocale() {
  93                 return locale;
  94         }
  95
  96         @Override
  97         public ProvidedRepository getRepository() {
  98                 return contentRepository;
  99         }
 100
 101         /*
 102          * MOUNT MANAGEMENT
 103          */
 104         @Override
 105         public Content getMountPoint(String path) {
 106                 String[] parent = ContentUtils.getParentPath(path);
 107                 ProvidedContent mountParent = (ProvidedContent) get(parent[0]);
 108 //                      Content mountPoint = mountParent.getProvider().get(CmsContentSession.this, null, path);
 109                 return mountParent.getMountPoint(parent[1]);
 110         }
 111
 112         /*
 113          * NAMESPACE CONTEXT
 114          */
 115
 116         @Override
 117         public String getNamespaceURI(String prefix) {
 118                 return NamespaceUtils.getNamespaceURI((p) -> contentRepository.getTypesManager().getPrefixes().get(p), prefix);
 119         }
 120
 121         @Override
 122         public Iterator<String> getPrefixes(String namespaceURI) {
 123                 return NamespaceUtils.getPrefixes((ns) -> contentRepository.getTypesManager().getPrefixes().entrySet().stream()
 124                                 .filter(e -> e.getValue().equals(ns)).map(Map.Entry::getKey).collect(Collectors.toUnmodifiableSet()),
 125                                 namespaceURI);
 126         }
 127
 128         @Override
 129         public CompletionStage<ContentSession> edit(Consumer<ContentSession> work) {
 130                 edition = CompletableFuture.supplyAsync(() -> {
 131                         work.accept(this);
 132                         return this;
 133                 }).thenApply((s) -> {
 134                         // TODO optimise
 135                         for (ContentProvider provider : modifiedProviders) {
 136                                 if (provider instanceof DomContentProvider) {
 137                                         ((DomContentProvider) provider).persist(s);
 138                                 }
 139                         }
 140                         return s;
 141                 });
 142                 return edition.minimalCompletionStage();
 143         }
 144
 145         @Override
 146         public boolean isEditing() {
 147                 return edition != null && !edition.isDone();
 148         }
 149
 150         @Override
 151         public void notifyModification(ProvidedContent content) {
 152                 ContentProvider contentProvider = content.getProvider();
 153                 modifiedProviders.add(contentProvider);
 154         }
 155
 156         @Override
 157         public UUID getUuid() {
 158                 return uuid;
 159         }
 160
 161         @Override
 162         public Content getSessionRunDir() {
 163                 if (sessionRunDir == null) {
 164                         String runDirPath = CmsContentRepository.RUN_BASE + '/' + uuid.toString();
 165                         if (exists(runDirPath))
 166                                 sessionRunDir = get(runDirPath);
 167                         else {
 168                                 Content runDir = get(CmsContentRepository.RUN_BASE);
 169                                 // TODO deal with no run dir available?
 170                                 sessionRunDir = runDir.add(uuid.toString(), CrName.COLLECTION.get());
 171                         }
 172                 }
 173                 return sessionRunDir;
 174         }
 175
 176 //              @Override
 177 //              public String findNamespace(String prefix) {
 178 //                      return prefixes.get(prefix);
 179 //              }
 180 //
 181 //              @Override
 182 //              public Set<String> findPrefixes(String namespaceURI) {
 183 //                      Set<String> res = prefixes.entrySet().stream().filter(e -> e.getValue().equals(namespaceURI))
 184 //                                      .map(Map.Entry::getKey).collect(Collectors.toUnmodifiableSet());
 185 //
 186 //                      return res;
 187 //              }
 188 //
 189 //              @Override
 190 //              public String findPrefix(String namespaceURI) {
 191 //                      if (CrName.CR_NAMESPACE_URI.equals(namespaceURI) && prefixes.containsKey(CrName.CR_DEFAULT_PREFIX))
 192 //                              return CrName.CR_DEFAULT_PREFIX;
 193 //                      return ProvidedSession.super.findPrefix(namespaceURI);
 194 //              }
 195
 196 }