public OrderedHashSet getSubqueries() {
OrderedHashSet set = null;
if (joinCondition != null) {
set = joinCondition.collectAllSubqueries(set);
}
if (rangeTable instanceof TableDerived) {
QueryExpression queryExpression = ((TableDerived) rangeTable).getQueryExpression();
if (queryExpression == null) {
Expression dataExpression = ((TableDerived) rangeTable).getDataExpression();
if (dataExpression != null) {
if (set == null) {
set = new OrderedHashSet();
}
OrderedHashSet.addAll(set, dataExpression.getSubqueries());
}
} else {
OrderedHashSet temp = queryExpression.getSubqueries();
set = OrderedHashSet.addAll(set, temp);
set = OrderedHashSet.add(set, rangeTable);
}
}
return set;
}
OrderedHashSet getSubqueries() {
OrderedHashSet set = null;
if (joinCondition != null) {
set = joinCondition.collectAllSubqueries(set);
}
if (rangeTable instanceof TableDerived) {
QueryExpression baseQueryExpression = ((TableDerived) rangeTable).getQueryExpression();
if (((TableDerived) rangeTable).view != null) {
if (set == null) {
set = new OrderedHashSet();
}
set.addAll(((TableDerived) rangeTable).view.getSubqueries());
} else if (baseQueryExpression == null) {
set = OrderedHashSet.add(set, rangeTable.getSubQuery());
} else {
OrderedHashSet temp = baseQueryExpression.getSubqueries();
set = OrderedHashSet.addAll(set, temp);
set = OrderedHashSet.add(set, rangeTable.getSubQuery());
}
}
return set;
}
SubQuery[] getSubqueries(Session session) {
OrderedHashSet subQueries = null;
for (int i = 0; i < targetRangeVariables.length; i++) {
if (targetRangeVariables[i] == null) {
continue;
}
OrderedHashSet set = targetRangeVariables[i].getSubqueries();
subQueries = OrderedHashSet.addAll(subQueries, set);
}
for (int i = 0; i < updateExpressions.length; i++) {
subQueries = updateExpressions[i].collectAllSubqueries(subQueries);
}
if (insertExpression != null) {
subQueries = insertExpression.collectAllSubqueries(subQueries);
}
if (condition != null) {
subQueries = condition.collectAllSubqueries(subQueries);
}
if (queryExpression != null) {
OrderedHashSet set = queryExpression.getSubqueries();
subQueries = OrderedHashSet.addAll(subQueries, set);
}
if (subQueries == null || subQueries.size() == 0) {
return SubQuery.emptySubqueryArray;
}
SubQuery[] subQueryArray = new SubQuery[subQueries.size()];
subQueries.toArray(subQueryArray);
ArraySort.sort(subQueryArray, 0, subQueryArray.length, subQueryArray[0]);
for (int i = 0; i < subQueryArray.length; i++) {
subQueryArray[i].prepareTable(session);
}
return subQueryArray;
}
void moveConditionsToInner(Session session, RangeVariable[] ranges) {
Expression[] colExpr;
int exclude;
HsqlArrayList conditionsList;
Expression condition = null;
if (whereConditions.length > 1) {
return;
}
if (joinConditions.length > 1) {
return;
}
for (int i = 0; i < ranges.length; i++) {
if (ranges[i].isLeftJoin || ranges[i].isRightJoin) {
return;
}
}
exclude = ArrayUtil.find(ranges, this);
conditionsList = new HsqlArrayList();
addConditionsToList(conditionsList, joinConditions[0].indexCond);
if (joinConditions[0].indexCond != null
&& joinConditions[0].indexCond[0] != joinConditions[0].indexEndCond[0]) {
addConditionsToList(conditionsList, joinConditions[0].indexEndCond);
}
addConditionsToList(conditionsList, whereConditions[0].indexCond);
addConditionsToList(conditionsList, whereConditions[0].indexEndCond);
RangeVariableResolver.decomposeAndConditions(
session, joinConditions[0].nonIndexCondition, conditionsList);
RangeVariableResolver.decomposeAndConditions(
session, whereConditions[0].nonIndexCondition, conditionsList);
for (int i = conditionsList.size() - 1; i >= 0; i--) {
Expression e = (Expression) conditionsList.get(i);
if (e == null || e.isTrue() || e.hasReference(ranges, exclude)) {
conditionsList.remove(i);
continue;
}
}
if (conditionsList.size() == 0) {
if (rangeTable.isView()) {
((TableDerived) rangeTable).resetToView();
}
return;
}
QueryExpression queryExpression = rangeTable.getQueryExpression();
colExpr = ((QuerySpecification) queryExpression).exprColumns;
for (int i = 0; i < conditionsList.size(); i++) {
Expression e = (Expression) conditionsList.get(i);
OrderedHashSet set = e.collectRangeVariables(null);
e = e.duplicate();
e = e.replaceColumnReferences(this, colExpr);
if (e.collectAllSubqueries(null) != null) {
return;
}
if (set != null) {
for (int j = 0; j < set.size(); j++) {
RangeVariable range = (RangeVariable) set.get(j);
if (this != range && range.rangeType == RangeVariable.TABLE_RANGE) {
queryExpression.setCorrelated();
}
}
}
condition = ExpressionLogical.andExpressions(condition, e);
}
queryExpression.addExtraConditions(condition);
}