/** Builds the set of paths between all the couple of vertexes */
private void buildPaths() {
logger.debug("IN");
allGraphPaths = new HashSet<GraphPath<IModelEntity, Relationship>>();
paths = new HashSet<EntitiesPath>();
// build all the path between entities
Iterator<IModelEntity> vertexesIter = entities.iterator();
// First loop for the source of the path
while (vertexesIter.hasNext()) {
IModelEntity startVertex = vertexesIter.next();
logger.debug("Building the list of path starting from " + startVertex.getName());
// inner loop for the target of the path
Iterator<IModelEntity> vertexesInnerIter = entities.iterator();
while (vertexesInnerIter.hasNext()) {
IModelEntity endVertex = vertexesInnerIter.next();
if (!startVertex.equals(endVertex)) {
EntitiesPath entitiesPath = new EntitiesPath(startVertex, endVertex);
if (!this.paths.contains(entitiesPath)) {
logger.debug(
"Building the list of path between the vertexes ["
+ startVertex.getName()
+ ","
+ endVertex.getName()
+ "]");
KShortestPaths<IModelEntity, Relationship> kshortestPath =
new KShortestPaths<IModelEntity, Relationship>(graph, startVertex, maxPathLength);
List<GraphPath<IModelEntity, Relationship>> graphPaths =
kshortestPath.getPaths(endVertex);
// if there is at least one path between the 2 vertex
if (graphPaths != null) {
entitiesPath.setPaths(graphPaths);
// updating the class variables
this.paths.add(entitiesPath);
for (int i = 0; i < graphPaths.size(); i++) {
GraphPath<IModelEntity, Relationship> path = graphPaths.get(i);
if (!containsPath(this.allGraphPaths, path)) {
this.allGraphPaths.add(path);
}
}
}
}
}
}
}
logger.debug("OUT");
}
private IModelField getColumnModelField(Column column, IModelEntity entity) {
if (column.getSubEntity()
!= null) { // in case it is a subEntity attribute, look for the field inside it
// In order to recover subentities the new way if DEFAULT_MAX_RECURSION_LEVEL is set to zero
/*
QbeEngineInstance engineInstance = getEngineInstance();
QbeTemplate template = engineInstance.getTemplate();
// takes the only datamart's name configured
String modelName = (String) template.getDatamartNames().get(0);
IModelStructure md = getDataSource().getModelStructure();
IModelEntity subEntity = md.getEntity(column.getSubEntity()); */
String entityUName = entity.getUniqueName();
String subEntityKey =
entityUName.substring(0, entityUName.lastIndexOf("::"))
+ "::"
+ column.getSubEntity()
+ "("
+ column.getForeignKey()
+ ")";
IModelEntity subEntity = entity.getSubEntity(subEntityKey);
if (subEntity == null) {
throw new SpagoBIEngineServiceException(
getActionName(),
"Sub-entity ["
+ column.getSubEntity()
+ "] not found in entity ["
+ entity.getName()
+ "]!");
}
entity = subEntity;
}
logger.debug(
"Looking for attribute " + column.getField() + " in entity " + entity.getName() + " ...");
List<IModelField> fields = entity.getAllFields();
Iterator<IModelField> it = fields.iterator();
while (it.hasNext()) {
IModelField field = it.next();
if (field.getName().equals(column.getField())) {
return field;
}
}
return null;
}
/**
* Get all the paths passing from the passed vertex
*
* @param vertex
* @return
*/
private Set<GraphPath<IModelEntity, Relationship>> getPathsOfAmbigousEntities(
IModelEntity vertex) {
logger.debug("IN");
logger.debug("Getting all the paths passing through the vertex " + vertex.getName());
Iterator<GraphPath<IModelEntity, Relationship>> iter = getAllGraphPaths().iterator();
Set<GraphPath<IModelEntity, Relationship>> toReturn =
new HashSet<GraphPath<IModelEntity, Relationship>>();
while (iter.hasNext()) {
GraphPath<IModelEntity, Relationship> path = iter.next();
if (containsVertex(path, vertex)) {
toReturn.add(path);
}
}
logger.debug("The path passing through the vertex are " + toReturn.size());
logger.debug("OUT");
return toReturn;
}
