/** @return Nodes to execute on. */
private Collection<GridNode> nodes() {
GridCacheMode cacheMode = cctx.config().getCacheMode();
switch (cacheMode) {
case LOCAL:
if (prj != null)
U.warn(
log,
"Ignoring query projection because it's executed over LOCAL cache "
+ "(only local node will be queried): "
+ this);
return Collections.singletonList(cctx.localNode());
case REPLICATED:
if (prj != null) return nodes(cctx, prj);
GridCacheDistributionMode mode = cctx.config().getDistributionMode();
return mode == PARTITIONED_ONLY || mode == NEAR_PARTITIONED
? Collections.singletonList(cctx.localNode())
: Collections.singletonList(F.rand(nodes(cctx, null)));
case PARTITIONED:
return nodes(cctx, prj);
default:
throw new IllegalStateException("Unknown cache distribution mode: " + cacheMode);
}
}
/** @throws Exception If failed. */
public void testEmptyProjections() throws Exception {
final GridClientCompute dflt = client.compute();
Collection<? extends GridClientNode> nodes = dflt.nodes();
assertEquals(NODES_CNT, nodes.size());
Iterator<? extends GridClientNode> iter = nodes.iterator();
final GridClientCompute singleNodePrj = dflt.projection(Collections.singletonList(iter.next()));
final GridClientNode second = iter.next();
final GridClientPredicate<GridClientNode> noneFilter =
new GridClientPredicate<GridClientNode>() {
@Override
public boolean apply(GridClientNode node) {
return false;
}
};
final GridClientPredicate<GridClientNode> targetFilter =
new GridClientPredicate<GridClientNode>() {
@Override
public boolean apply(GridClientNode node) {
return node.nodeId().equals(second.nodeId());
}
};
GridTestUtils.assertThrows(
log(),
new Callable<Object>() {
@Override
public Object call() throws Exception {
return dflt.projection(noneFilter).log(-1, -1);
}
},
GridServerUnreachableException.class,
null);
GridTestUtils.assertThrows(
log(),
new Callable<Object>() {
@Override
public Object call() throws Exception {
return singleNodePrj.projection(second);
}
},
GridClientException.class,
null);
GridTestUtils.assertThrows(
log(),
new Callable<Object>() {
@Override
public Object call() throws Exception {
return singleNodePrj.projection(targetFilter);
}
},
GridClientException.class,
null);
}