Examples of org.persvr.data.Identification

org.persvr.data.Identification
An Identification represents an id of object or a value. This allows objects or values to be reference without the actual object being loaded into the object graph yet. When the object or value is needed, the identification object can retrieve it (by calling getTarget) @author Kris Zyp @param < T> base type of objects that can be referred to

      if (object.containsKey("$ref")) {
        
        return Identification.idForRelativeString(path, (String) object.get("$ref"));
      }
      if (object.containsKey("id")) {
        Identification currentId = Identification.idForRelativeString(path, object.remove("id").toString());


        if (currentId.source instanceof ClientData) // TODO: Surely we can do this more consistently
          target = Client.getCurrentObjectResponse().getConnection().clientSideObject(currentId.toString(),createInitialObject(object));
        else {
          if (currentId instanceof ObjectId){
            if(mustMatchId){
              if(targetId != currentId){
                throw new RuntimeException("id does not match location");
              }
            }
            else {
              targetId = (ObjectId) currentId;
            }
            
          }
          else {
            target = (Persistable) currentId.getTarget();
            if(mustMatchId && target.getId() != targetId){
              throw new RuntimeException("id does not match location");
            }
          }
        }

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          Persistable object = null; 
              //Id requestedId = new Id(requestedObject); // removes the leading underscore
              //requestedId.source = sourceURL;
          String field = null;
              Object value = null; 
            Identification id = Identification.idForString(requestedPath);
            value = getClientSideObject(requestedPath);
            if(value != null){
              object = (Persistable) value;
            }
            else{
              if (id instanceof ObjectId || id instanceof JsonPath){
                if(id instanceof ObjectId){
                  value = put ? ((ObjectId)id).getOrCreateTarget() : ((ObjectId)id).getTarget(); // We can't use getOrCreateTarget or else it would create objects on GETs
                }
                else {
                  value = ((Identification<Object>)id).getTarget();
                }
                if (value instanceof Persistable){
                  object = (Persistable)value;
                }
              }
              else {
                object = ((ObjectPath)id).getSecondToLastTarget();
                field = ((ObjectPath)id).getLastPath().toString();
                value = id.getTarget();
              }
            }
            setRequestedPath(requestedPath,id);

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         * source = DataSourceManager.getSource(sourceName); if (source ==
         * null) source = AliasIds.getAliasHandler(sourceName); } else
         * source = null;
         */
        String method = request.getMethod().toUpperCase();
        Identification targetId = Identification.idForString(path);


        if (log.isDebugEnabled()) {
          log.debug("Identification targetId:" + targetId);
          log.debug("Request Method: " + method);
        }


        reason = null;
        if ("GET".equals(method) || "POST".equals(method)) {
          // allow the HTTP method to be defined with a parameter
          String explicitMethod = getHeader(request, "method");
          if (explicitMethod != null)
            method = explicitMethod;
          else if ("GET".equals(method))
            // if there is not explicit method, than we can assume cookie authorization is allowed
            requestHelper.authorizeCookieAuthentication();
        }
        try {
          if (targetId instanceof ObjectNotFoundId ||
            (targetId.getSource() instanceof LocalDataSource && ((LocalDataSource) targetId.getSource()).passThrough()) ||
            ("GET".equals(method) && !objectExistsForId(targetId))) {
            if ("PUT".equals(method)) {
              if (UserSecurity.hasPermission(SystemPermission.javaScriptCoding)) {
                // if the user has permission they can also update files with PUT
                File targetFile = new File(((HttpServletRequest) request).getRealPath(path));

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          && "id".equals(expression.getLastChild().getString())) {
      name = expression.getFirstChild().getLastChild().getString();
      sql.append("field='" + makeStringSQLSafe(name) + "'");
      if (valueNode.getType() != Token.STRING || (conditionType != Token.EQ && conditionType != Token.SHEQ))
        throw new QueryCantBeHandled("The id must be a string");
      Identification id = Identification.idForString(valueNode.getString());
      if (!(id instanceof ObjectId)){
        throw new QueryCantBeHandled("The id must be an object id");
      }
      if(!(id.source instanceof DynaObjectDBSource)){
        throw new QueryCantBeHandled("The id must be an object id of the object db");
      }
      sql.append(" AND value_type=" + OBJECT_TYPE + " AND value=" + ((DynaObjectDBSource)id.source).convertId(id.subObjectId));
      return sql.toString();
      
    }
    if (expression.getType() == Token.GETPROP && expression.getFirstChild().getType() == Token.THIS
        && "id".equals(expression.getLastChild().getString())) {
      Identification id = Identification.idForString(valueNode.getString());
      if (!(id instanceof ObjectId)){
        throw new QueryCantBeHandled("The id must be an object id");
      }
      if(!(id.source instanceof DynaObjectDBSource)){
        throw new QueryCantBeHandled("The id must be an object id of the object db");

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                    }
                    PersistableObject.enableSecurity(security);
                    writeNewLine(writer,commaNeeded);
                    writer.write(JSON.quote(key));
                    writer.write(":");
                    Identification valueId;
                    if(value instanceof Identification)
                      valueId = (Identification)value;
                    else if(value instanceof Persistable){
                      valueId = ((Persistable)value).getId();
                    }

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  }
  protected Object convertJsonToJavaScript(Object value, String id) {
    String fullId = (id.startsWith("http://") || id.startsWith("https://")) ? id : (getId() + '/' + id); 
    if (value instanceof Map || value instanceof List){
      if (value instanceof Map && ((Map)value).containsKey("$ref")){
          Identification refId = Identification.idForRelativeString(fullId, (String) ((Map)value).get("$ref"));
          if(refId instanceof ObjectId && ((ObjectId)refId).subObjectId == null){
            refId = ObjectId.idForObject(DataSourceManager.getMetaClassSource(), ((ObjectId)refId).source.getId());
          }
          return refId;
      }
      Identification objId;
      if (value instanceof Map && ((Map)value).containsKey("id") && useIds())
          objId= Identification.idForRelativeString(fullId, (String) ((Map)value).get("id"));
      else
        objId = ObjectId.idForObject(this, id, true);
      if(!(objId instanceof ObjectId))

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    }
  }
  protected Object mapJson(PersistableInitializer initializer, final Object object, final String objectId) {
    // the id might resolve differently after downloading a class
    ObjectId objId = ObjectId.idForObject(this, objectId);
    Identification newId = Identification.idForString(getId() + '/' + objectId);


    if(newId instanceof ObjectId && objId.source != newId.source){
      objId.source = newId.source;
      objId.subObjectId = newId.subObjectId;
      return ((HttpJsonSource)newId.source).mapJson(initializer, object, newId.subObjectId);

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