@Override
  public byte[] createColumnKey(PlasmaDataObject dataObject, PlasmaProperty property) {
    PlasmaType type = (PlasmaType) dataObject.getType();

    Integer seqNum = this.graphState.findSequence(dataObject);
    if (seqNum == null) seqNum = this.graphState.addSequence(dataObject);
    return getKey(type, seqNum, property);
  }
Exemplo n.º 2
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  /**
   * Assembles a data object of the given target type by first forming a query using the given
   * key/property pairs. If an existing data object is mapped for the given key pairs, the existing
   * data object is linked.
   *
   * @param targetType the type for the data object to be assembled
   * @param source the source data object
   * @param sourceProperty the source property
   * @param childKeyPairs the key pairs for the data object to be assembled
   */
  protected void assemble(
      PlasmaType targetType,
      PlasmaDataObject source,
      PlasmaProperty sourceProperty,
      List<PropertyPair> childKeyPairs,
      int level) {
    Set<Property> props = this.collector.getProperties(targetType, level);
    if (props == null) props = EMPTY_PROPERTY_SET;

    if (log.isDebugEnabled())
      log.debug(
          String.valueOf(level)
              + ":assemble: "
              + source.getType().getName()
              + "."
              + sourceProperty.getName()
              + "->"
              + targetType.getName()
              + ": "
              + props);

    List<List<PropertyPair>> result =
        this.getPredicateResult(targetType, sourceProperty, props, childKeyPairs);

    if (log.isDebugEnabled()) log.debug(String.valueOf(level) + ":results: " + result.size());

    Map<PlasmaDataObject, List<PropertyPair>> resultMap =
        this.collectResults(targetType, source, sourceProperty, result);

    // now traverse
    Iterator<PlasmaDataObject> iter = resultMap.keySet().iterator();
    while (iter.hasNext()) {
      PlasmaDataObject target = iter.next();
      List<PropertyPair> row = resultMap.get(target);
      // traverse singular results props
      for (PropertyPair pair : row) {
        if (pair.getProp().isMany() || pair.getProp().getType().isDataType())
          continue; // only singular reference props
        if (!pair.isQueryProperty())
          continue; // property is a key or other property not explicitly cited in the source query,
                    // don't traverse it

        List<PropertyPair> nextKeyPairs = this.getNextKeyPairs(target, pair, level);

        if (log.isDebugEnabled())
          log.debug(
              String.valueOf(level)
                  + ":traverse: ("
                  + pair.getProp().isMany()
                  + ") "
                  + pair.getProp().toString()
                  + ":"
                  + String.valueOf(pair.getValue()));
        assemble(
            (PlasmaType) pair.getProp().getType(), target, pair.getProp(), nextKeyPairs, level + 1);
      }

      // traverse multi props based, not on the results
      // row, but on keys within this data object
      for (Property p : props) {
        PlasmaProperty prop = (PlasmaProperty) p;
        if (!prop.isMany() || prop.getType().isDataType()) continue; // only many reference props

        List<PropertyPair> childKeyProps = this.getChildKeyProps(target, targetType, prop);
        if (log.isDebugEnabled())
          log.debug(
              String.valueOf(level)
                  + ":traverse: ("
                  + prop.isMany()
                  + ") "
                  + prop.toString()
                  + " - "
                  + childKeyProps.toArray().toString());
        assemble((PlasmaType) prop.getType(), target, prop, childKeyProps, level + 1);
      }
    }
  }