protected ORID[] getRange() {
final ORID beginRange;
final ORID endRange;
final OSQLFilterCondition rootCondition =
compiledFilter == null ? null : compiledFilter.getRootCondition();
if (compiledFilter == null || rootCondition == null) {
if (request instanceof OSQLSynchQuery)
beginRange = ((OSQLSynchQuery<ODocument>) request).getNextPageRID();
else beginRange = null;
endRange = null;
} else {
final ORID conditionBeginRange = rootCondition.getBeginRidRange();
final ORID conditionEndRange = rootCondition.getEndRidRange();
final ORID nextPageRid;
if (request instanceof OSQLSynchQuery)
nextPageRid = ((OSQLSynchQuery<ODocument>) request).getNextPageRID();
else nextPageRid = null;
if (conditionBeginRange != null && nextPageRid != null)
beginRange =
conditionBeginRange.compareTo(nextPageRid) > 0 ? conditionBeginRange : nextPageRid;
else if (conditionBeginRange != null) beginRange = conditionBeginRange;
else beginRange = nextPageRid;
endRange = conditionEndRange;
}
return new ORID[] {beginRange, endRange};
}
protected void optimizeBranch(
final OSQLFilterCondition iParentCondition, OSQLFilterCondition iCondition) {
if (iCondition == null) return;
Object left = iCondition.getLeft();
if (left instanceof OSQLFilterCondition) {
// ANALYSE LEFT RECURSIVELY
optimizeBranch(iCondition, (OSQLFilterCondition) left);
} else if (left instanceof OSQLFunctionRuntime) {
left = optimizeFunction((OSQLFunctionRuntime) left);
iCondition.setLeft(left);
}
Object right = iCondition.getRight();
if (right instanceof OSQLFilterCondition) {
// ANALYSE RIGHT RECURSIVELY
optimizeBranch(iCondition, (OSQLFilterCondition) right);
} else if (right instanceof OSQLFunctionRuntime) {
right = optimizeFunction((OSQLFunctionRuntime) right);
iCondition.setRight(right);
}
final OQueryOperator oper = iCondition.getOperator();
Object result = null;
if (left instanceof OSQLFilterItemField && right instanceof OSQLFilterItemField) {
if (((OSQLFilterItemField) left).getRoot().equals(((OSQLFilterItemField) right).getRoot())) {
if (oper instanceof OQueryOperatorEquals) result = Boolean.TRUE;
else if (oper instanceof OQueryOperatorNotEquals) result = Boolean.FALSE;
}
}
if (result != null) {
if (iParentCondition != null)
if (iCondition == iParentCondition.getLeft())
// REPLACE LEFT
iCondition.setLeft(result);
else
// REPLACE RIGHT
iCondition.setRight(result);
else {
// REPLACE ROOT CONDITION
if (result instanceof Boolean && ((Boolean) result)) compiledFilter.setRootCondition(null);
}
}
}
