public void testSimplePlan() throws Exception {
LogicalPlanTester lpt = new LogicalPlanTester();
lpt.buildPlan("a = load 'd.txt';");
lpt.buildPlan("b = filter a by $0==NULL;");
LogicalPlan plan = lpt.buildPlan("store b into 'empty';");
// check basics
org.apache.pig.experimental.logical.relational.LogicalPlan newPlan = migratePlan(plan);
assertEquals(3, newPlan.size());
assertEquals(newPlan.getSources().size(), 1);
// check load
LogicalRelationalOperator op = (LogicalRelationalOperator) newPlan.getSources().get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOLoad.class);
// check filter
op = (LogicalRelationalOperator) newPlan.getSuccessors(op).get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOFilter.class);
LogicalExpressionPlan exp =
((org.apache.pig.experimental.logical.relational.LOFilter) op).getFilterPlan();
EqualExpression eq = (EqualExpression) exp.getSources().get(0);
assertEquals(eq.getLhs().getClass(), ProjectExpression.class);
assertEquals(((ProjectExpression) eq.getLhs()).getColNum(), 0);
assertEquals(((ProjectExpression) eq.getLhs()).getInputNum(), 0);
assertEquals(eq.getRhs().getClass(), ConstantExpression.class);
// check store
op = (LogicalRelationalOperator) newPlan.getSuccessors(op).get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOStore.class);
}
public void testJoinPlan() throws Exception {
LogicalPlanTester lpt = new LogicalPlanTester();
lpt.buildPlan("a = load 'd1.txt' as (id, c);");
lpt.buildPlan("b = load 'd2.txt'as (id, c);");
lpt.buildPlan("c = join a by id, b by c;");
lpt.buildPlan("d = filter c by a::id==NULL AND b::c==NULL;");
LogicalPlan plan = lpt.buildPlan("store d into 'empty';");
// check basics
org.apache.pig.experimental.logical.relational.LogicalPlan newPlan = migratePlan(plan);
assertEquals(5, newPlan.size());
assertEquals(newPlan.getSources().size(), 2);
// check load and join
LogicalRelationalOperator op =
(LogicalRelationalOperator) newPlan.getSuccessors(newPlan.getSources().get(0)).get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOJoin.class);
assertEquals(((LOJoin) op).getJoinType(), LOJoin.JOINTYPE.HASH);
LogicalRelationalOperator l1 = (LogicalRelationalOperator) newPlan.getPredecessors(op).get(0);
assertEquals(l1.getClass(), org.apache.pig.experimental.logical.relational.LOLoad.class);
assertEquals(l1.getAlias(), "a");
LogicalRelationalOperator l2 = (LogicalRelationalOperator) newPlan.getPredecessors(op).get(1);
assertEquals(l2.getClass(), org.apache.pig.experimental.logical.relational.LOLoad.class);
assertEquals(l2.getAlias(), "b");
// check join input plans
LogicalExpressionPlan p1 = ((LOJoin) op).getJoinPlan(0).iterator().next();
assertEquals(p1.size(), 1);
ProjectExpression prj = (ProjectExpression) p1.getSources().get(0);
assertEquals(prj.getInputNum(), 0);
assertEquals(prj.getColNum(), 0);
LogicalExpressionPlan p2 = ((LOJoin) op).getJoinPlan(1).iterator().next();
assertEquals(p2.size(), 1);
prj = (ProjectExpression) p2.getSources().get(0);
assertEquals(prj.getInputNum(), 1);
assertEquals(prj.getColNum(), 1);
// check filter
op = (LogicalRelationalOperator) newPlan.getSuccessors(op).get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOFilter.class);
LogicalExpressionPlan exp =
((org.apache.pig.experimental.logical.relational.LOFilter) op).getFilterPlan();
AndExpression ae = (AndExpression) exp.getSources().get(0);
EqualExpression eq = (EqualExpression) exp.getSuccessors(ae).get(0);
assertEquals(eq.getLhs().getClass(), ProjectExpression.class);
assertEquals(((ProjectExpression) eq.getLhs()).getColNum(), 0);
assertEquals(((ProjectExpression) eq.getLhs()).getInputNum(), 0);
assertEquals(eq.getRhs().getClass(), ConstantExpression.class);
eq = (EqualExpression) exp.getSuccessors(ae).get(1);
assertEquals(eq.getLhs().getClass(), ProjectExpression.class);
assertEquals(((ProjectExpression) eq.getLhs()).getColNum(), 3);
assertEquals(((ProjectExpression) eq.getLhs()).getInputNum(), 0);
assertEquals(eq.getRhs().getClass(), ConstantExpression.class);
// check store
op = (LogicalRelationalOperator) newPlan.getSuccessors(op).get(0);
assertEquals(op.getClass(), org.apache.pig.experimental.logical.relational.LOStore.class);
}