private void addFilterConditions(
final JoinConditions conditions,
final HashMap<String, Set<MappableNodeFilter>> filters,
final Set<MappableNodePattern> joinableVars,
final HashMap<String, String> variableBindings) {
for (String filterVar : new ArrayList<String>(filters.keySet())) {
for (MappableNodePattern joinableVar : joinableVars) {
if (joinableVar.isVariable() && joinableVar.getVarName().equals(filterVar)) {
for (MappableNodeFilter f : filters.get(filterVar)) {
String right;
String left;
if (f.getNode().isVariable() && f.getNode().getVarName().equals(filterVar)) {
left = getBoundValue(joinableVar, variableBindings);
} else if (f.getNode().isVariable()) {
left = getBoundValue(f.getNode(), variableBindings);
} else {
left = DBUtil.quotedString(f.getNode().getNode().toString(), backslashEscape);
}
if (f.getConstraint().isVariable()
&& f.getConstraint().getVarName().equals(filterVar)) {
right = getBoundValue(joinableVar, variableBindings);
} else if (f.getConstraint().isVariable()) {
right = getBoundValue(f.getConstraint(), variableBindings);
} else {
right = DBUtil.quotedString(f.getConstraint().getNode().toString(), backslashEscape);
}
conditions.addCondition(left, f.getOperator(), right);
LOG.debug(
"parseGraphPattern: Adding filter "
+ "condition: "
+ left
+ " "
+ f.getOperator()
+ " "
+ right
+ "\n");
}
removeFromMap(filters.get(filterVar), filters);
}
}
}
}
private void processFilter(
final MappableTriplePattern p, final String varName, final MappableNodeFilter f)
throws QueryException {
String mappedName;
if (p.getSubject().isVariable() && p.getSubject().getVarName().equals(varName)) {
mappedName = p.getSubject().mappedName();
} else if (p.getObject().isVariable() && p.getObject().getVarName().equals(varName)) {
mappedName = p.getObject().mappedName();
} else {
throw new QueryException("Variable " + varName + " in filter Cannot be found in graph query");
}
if (!valueBindings.containsKey(mappedName)) {
valueBindings.put(mappedName, new HashSet<String>());
}
if (f.getNode().isVariable() && f.getNode().getVarName().equals(varName)) {
if (f.getConstraint().isVariable()) {
/* XXX It's probably not legal to be here.. */
LOG.warn("Node filter constraint is variable? " + "It's probably not legal to be here...");
} else {
valueBindings
.get(mappedName)
.add(
mappedName
+ " "
+ f.getOperator()
+ " "
+ DBUtil.quotedString(f.getConstraint().getNode().toString(), backslashEscape));
LOG.debug(
"Remaining Filters: "
+ mappedName
+ " "
+ f.getOperator()
+ " '"
+ f.getConstraint().getNode()
+ "'"
+ "\n");
}
} else if (f.getConstraint().isVariable() && f.getConstraint().getVarName().equals(varName)) {
if (f.getNode().isVariable()) {
/* XXX: it's probably not legal to be here.. */
LOG.warn(
"Node filter constraint is variable and node is "
+ "variable? It's probably not legal to be here...");
} else {
valueBindings
.get(mappedName)
.add(
DBUtil.quotedString(f.getNode().getNode().toString(), backslashEscape)
+ " "
+ f.getOperator()
+ " "
+ mappedName);
LOG.debug(
"Remaining Filters: "
+ "'"
+ f.getNode().getNode()
+ "' "
+ f.getOperator()
+ " "
+ mappedName
+ "\n");
}
}
}
