Package org.apache.pig.impl.plan

Examples of org.apache.pig.impl.plan.ProjectionMap.changes()

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        LogicalPlan lp = planTester.buildPlan("c = limit b 10;");
       
        //check that the load projection map is null
        LOLoad load = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadProjectionMap = load.getProjectionMap();
        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the order by projection map is not null
        LOSort sort = (LOSort)lp.getSuccessors(load).get(0);
        ProjectionMap sortProjectionMap = sort.getProjectionMap();
        assertTrue(sortProjectionMap.changes() == false);
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        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the order by projection map is not null
        LOSort sort = (LOSort)lp.getSuccessors(load).get(0);
        ProjectionMap sortProjectionMap = sort.getProjectionMap();
        assertTrue(sortProjectionMap.changes() == false);
       
        //check that the limit projection map is null
        LOLimit limit = (LOLimit)lp.getLeaves().get(0);
        ProjectionMap limitProjectionMap = limit.getProjectionMap();
        assertTrue(limitProjectionMap.changes() == false);
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        assertTrue(sortProjectionMap.changes() == false);
       
        //check that the limit projection map is null
        LOLimit limit = (LOLimit)lp.getLeaves().get(0);
        ProjectionMap limitProjectionMap = limit.getProjectionMap();
        assertTrue(limitProjectionMap.changes() == false);
    }
   
    @Test
    public void testQueryDistinctNoSchema() {
        planTester.buildPlan("a = load 'a';");
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        LogicalPlan lp = planTester.buildPlan("b = distinct a;");
       
        //check that the load projection map is null
        LOLoad load = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadProjectionMap = load.getProjectionMap();
        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the distinct projection map has null mappedFields
        LODistinct distinct = (LODistinct)lp.getLeaves().get(0);
        ProjectionMap distinctProjectionMap = distinct.getProjectionMap();
        assertTrue(distinctProjectionMap.changes() == false);
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        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the distinct projection map has null mappedFields
        LODistinct distinct = (LODistinct)lp.getLeaves().get(0);
        ProjectionMap distinctProjectionMap = distinct.getProjectionMap();
        assertTrue(distinctProjectionMap.changes() == false);
    }
   
    @Test
    public void testQueryStreamingNoSchema() {
        String query = "stream (load 'a') through `" + simpleEchoStreamingCommand + "`;";
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        LogicalPlan lp = planTester.buildPlan(query);
       
        //check that the load projection map is null
        LOLoad load = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadProjectionMap = load.getProjectionMap();
        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the stream projection map is null
        LOStream stream = (LOStream)lp.getLeaves().get(0);
        ProjectionMap streamProjectionMap = stream.getProjectionMap();
        assertTrue(streamProjectionMap == null);
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        LogicalPlan lp = planTester.buildPlan(query);
       
        //check that the load projection map is null
        LOLoad load = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadProjectionMap = load.getProjectionMap();
        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the stream projection map is null
        LOStream stream = (LOStream)lp.getLeaves().get(0);
        ProjectionMap streamProjectionMap = stream.getProjectionMap();
        assertTrue(streamProjectionMap == null);
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        LogicalPlan lp = planTester.buildPlan(query);
       
        //check that the load projection map is null
        LOLoad load = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadProjectionMap = load.getProjectionMap();
        assertTrue(loadProjectionMap.changes() == false);
       
        //check that the foreach projection map has null mappedFields
        //and null removed fields since the input schema is null
        LOForEach foreach = (LOForEach)lp.getLeaves().get(0);
        ProjectionMap foreachProjectionMap = foreach.getProjectionMap();
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        //check that the foreach projection map has null mappedFields
        //and null removed fields since the input schema is null
        LOForEach foreach = (LOForEach)lp.getLeaves().get(0);
        ProjectionMap foreachProjectionMap = foreach.getProjectionMap();
        assertTrue(foreachProjectionMap.changes() == true);
        assertTrue(foreachProjectionMap.getMappedFields() == null);
        assertTrue(foreachProjectionMap.getRemovedFields() == null);
       
        //check that added fields contain [0]
        List<Integer> foreachAddedFields = foreachProjectionMap.getAddedFields();
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        LogicalPlan lp = planTester.buildPlan("foreach (cogroup A by ($1), B by ($1)) generate A, flatten(B.($1, $2, $3));");
       
        //check that the loads' projection map is null
        LOLoad loada = (LOLoad) lp.getRoots().get(0);
        ProjectionMap loadaProjectionMap = loada.getProjectionMap();
        assertTrue(loadaProjectionMap.changes() == false);
       
        LOLoad loadb = (LOLoad) lp.getRoots().get(1);
        ProjectionMap loadbProjectionMap = loadb.getProjectionMap();
        assertTrue(loadbProjectionMap.changes() == false);
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