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);
}
