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NIHVIVO-3795 NIHVIVO-3793 fixed deletion bugs in RDFServiceSDB

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This commit is contained in:
brianjlowe 2012-06-15 17:42:08 +00:00
parent 2cc59294be
commit e5509654d2
1 changed files with 29 additions and 9 deletions
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34
webapp/src/edu/cornell/mannlib/vitro/webapp/rdfservice/impl/sdb/RDFServiceSDB.java
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@ -113,7 +113,9 @@ public class RDFServiceSDB extends RDFServiceImpl implements RDFService {
modelChange.getSerializedModel().mark(Integer.MAX_VALUE);
dataset.getLock().enterCriticalSection(Lock.WRITE);
try {
Model model = dataset.getNamedModel(modelChange.getGraphURI());
Model model = (modelChange.getGraphURI() == null)
? dataset.getDefaultModel()
: dataset.getNamedModel(modelChange.getGraphURI());
operateOnModel(model, modelChange, dataset);
} finally {
dataset.getLock().leaveCriticalSection();
@ -158,9 +160,10 @@ public class RDFServiceSDB extends RDFServiceImpl implements RDFService {
model.read(modelChange.getSerializedModel(), null,
getSerializationFormatString(modelChange.getSerializationFormat()));
} else if (modelChange.getOperation() == ModelChange.Operation.REMOVE) {
model.remove(parseModel(modelChange));
Model removal = parseModel(modelChange);
model.remove(removal);
if (dataset != null) {
removeBlankNodesWithSparqlUpdate(dataset, model, modelChange.getGraphURI());
removeBlankNodesWithSparqlUpdate(dataset, removal, modelChange.getGraphURI());
}
} else {
log.error("unrecognized operation type");
@ -172,15 +175,25 @@ public class RDFServiceSDB extends RDFServiceImpl implements RDFService {
private void removeBlankNodesWithSparqlUpdate(Dataset dataset, Model model, String graphURI) {
Model blankNodeModel = ModelFactory.createDefaultModel();
List<Statement> blankNodeStatements = new ArrayList<Statement>();
StmtIterator stmtIt = model.listStatements();
while (stmtIt.hasNext()) {
Statement stmt = stmtIt.nextStatement();
if (stmt.getSubject().isAnon() || stmt.getObject().isAnon()) {
blankNodeModel.add(stmt);
blankNodeStatements.add(stmt);
}
}
if(blankNodeStatements.size() == 0) {
return;
}
Model blankNodeModel = ModelFactory.createDefaultModel();
blankNodeModel.add(blankNodeStatements);
log.debug("removal model size " + model.size());
log.debug("blank node model size " + blankNodeModel.size());
String rootFinder = "SELECT ?s WHERE { ?s ?p ?o OPTIONAL { ?ss ?pp ?s } FILTER (!bound(?ss)) }";
Query rootFinderQuery = QueryFactory.create(rootFinder);
QueryExecution qe = QueryExecutionFactory.create(rootFinderQuery, blankNodeModel);
@ -214,7 +227,11 @@ public class RDFServiceSDB extends RDFServiceImpl implements RDFService {
}
m2.add(stmt);
DataSource ds = DatasetFactory.create();
if (graphURI == null) {
ds.setDefaultModel(dataset.getDefaultModel());
} else {
ds.addNamedModel(graphURI, dataset.getNamedModel(graphURI));
}
removeUsingSparqlUpdate(ds, m2, graphURI);
}
} finally {
@ -276,8 +293,11 @@ public class RDFServiceSDB extends RDFServiceImpl implements RDFService {
// make a plain dataset to force the query to be run in a way that
// won't overwhelm MySQL with too many joins
DataSource ds = DatasetFactory.create();
ds.addNamedModel(graphURI, (graphURI != null)
? dataset.getNamedModel(graphURI) : dataset.getDefaultModel());
if (graphURI == null) {
ds.setDefaultModel(dataset.getDefaultModel());
} else {
ds.addNamedModel(graphURI, dataset.getNamedModel(graphURI));
}
QueryExecution qe = QueryExecutionFactory.create(construct, ds);
try {
Model m = qe.execConstruct();