/** @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); }