private void checkJoinEstimateCosts(JoinOptimizer jo, LogicalJoinNode equalsJoinNode) {
int card1s[] = new int[20];
int card2s[] = new int[card1s.length];
double cost1s[] = new double[card1s.length];
double cost2s[] = new double[card1s.length];
Object[] ret;
// card1s linear others constant
for (int i = 0; i < card1s.length; ++i) {
card1s[i] = 3 * i + 1;
card2s[i] = 5;
cost1s[i] = cost2s[i] = 5.0;
}
double stats[] = getRandomJoinCosts(jo, equalsJoinNode, card1s, card2s, cost1s, cost2s);
ret = SystemTestUtil.checkLinear(stats);
Assert.assertEquals(Boolean.TRUE, ret[0]);
// card2s linear others constant
for (int i = 0; i < card1s.length; ++i) {
card1s[i] = 4;
card2s[i] = 3 * i + 1;
cost1s[i] = cost2s[i] = 5.0;
}
stats = getRandomJoinCosts(jo, equalsJoinNode, card1s, card2s, cost1s, cost2s);
ret = SystemTestUtil.checkLinear(stats);
Assert.assertEquals(Boolean.TRUE, ret[0]);
// cost1s linear others constant
for (int i = 0; i < card1s.length; ++i) {
card1s[i] = card2s[i] = 7;
cost1s[i] = 5.0 * (i + 1);
cost2s[i] = 3.0;
}
stats = getRandomJoinCosts(jo, equalsJoinNode, card1s, card2s, cost1s, cost2s);
ret = SystemTestUtil.checkLinear(stats);
Assert.assertEquals(Boolean.TRUE, ret[0]);
// cost2s linear others constant
for (int i = 0; i < card1s.length; ++i) {
card1s[i] = card2s[i] = 9;
cost1s[i] = 5.0;
cost2s[i] = 3.0 * (i + 1);
}
stats = getRandomJoinCosts(jo, equalsJoinNode, card1s, card2s, cost1s, cost2s);
ret = SystemTestUtil.checkLinear(stats);
Assert.assertEquals(Boolean.TRUE, ret[0]);
// everything linear
for (int i = 0; i < card1s.length; ++i) {
card1s[i] = 2 * (i + 1);
card2s[i] = 9 * i + 1;
cost1s[i] = 5.0 * i + 2;
cost2s[i] = 3.0 * i + 1;
}
stats = getRandomJoinCosts(jo, equalsJoinNode, card1s, card2s, cost1s, cost2s);
ret = SystemTestUtil.checkQuadratic(stats);
Assert.assertEquals(Boolean.TRUE, ret[0]);
}
