@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);
}
/**
* 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);
}
}
}
