Package org.apache.pig.impl.io

Examples of org.apache.pig.impl.io.FileSpec

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    public void visit(LOSplit split) throws VisitorException {
        String scope = split.getOperatorKey().scope;
        PhysicalOperator physOp = new POSplit(new OperatorKey(scope, nodeGen
                .getNextNodeId(scope)), split.getRequestedParallelism());
        physOp.setAlias(split.getAlias());
        FileSpec splStrFile;
        try {
            splStrFile = new FileSpec(FileLocalizer.getTemporaryPath(null, pc).toString(),new FuncSpec(BinStorage.class.getName()));
        } catch (IOException e1) {
            byte errSrc = pc.getErrorSource();
            int errCode = 0;
            switch(errSrc) {
            case PigException.BUG:
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        return ret;
    }
   
    public static POStore dummyPigStorageOp() {
        POStore ret = new POStore(new OperatorKey("", r.nextLong()));
        ret.setSFile(new FileSpec("DummyFil", new FuncSpec(PigStorage.class.getName() + "()")));
        return ret;
    }
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        MapReduceOper ret = new MapReduceOper(new OperatorKey("",r.nextLong()));
        return ret;
    }
   
    private static FileSpec getTempFileSpec() throws IOException {
        return new FileSpec(FileLocalizer.getTemporaryPath(null, pc).toString(),new FuncSpec(BinStorage.class.getName()));
    }
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    private LogicalPlan genNewLoadStorePlan(String inputFile,
                                            String outputFile, DataStorage dfs)
                                        throws Throwable {
        LogicalPlan plan = new LogicalPlan() ;
        FileSpec filespec1 =
            new FileSpec(inputFile, new FuncSpec("org.apache.pig.builtin.PigStorage")) ;
        FileSpec filespec2 =
            new FileSpec(outputFile, new FuncSpec("org.apache.pig.builtin.PigStorage"));
        LOLoad load = new LOLoad(plan, genNewOperatorKeyId(), filespec1,
                ConfigurationUtil.toConfiguration(dfs.getConfiguration())) ;      
        LOStore store = new LOStore(plan, genNewOperatorKeyId(), filespec2, "new") ;
       
        plan.add(load) ;
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        LogicalPlan lp = new LogicalPlan();
        {
            LogicalSchema aschema = new LogicalSchema();
            aschema.addField(new LogicalSchema.LogicalFieldSchema(
                "x", null, DataType.INTEGER));
            LOLoad A = new LOLoad(new FileSpec("/abc",
                new FuncSpec("/fooload", new String[] {"x", "y"})), aschema, lp);
            lp.add(A);
       
            // B = load
            LogicalSchema bschema = new LogicalSchema();
            bschema.addField(new LogicalSchema.LogicalFieldSchema(
                "y", null, DataType.INTEGER));
            LOLoad B = new LOLoad(new FileSpec("/def",
                new FuncSpec("PigStorage", "\t")), bschema, lp);
            lp.add(B);
       
            // C = join
            LogicalSchema cschema = new LogicalSchema();
            cschema.addField(new LogicalSchema.LogicalFieldSchema(
                "x", null, DataType.INTEGER));
            cschema.addField(new LogicalSchema.LogicalFieldSchema(
                "y", null, DataType.INTEGER));
            LogicalExpressionPlan aprojplan = new LogicalExpressionPlan();
            new ProjectExpression(aprojplan, DataType.INTEGER, 0, 0);
            LogicalExpressionPlan bprojplan = new LogicalExpressionPlan();
            new ProjectExpression(bprojplan, DataType.INTEGER, 1, 0);
            MultiMap<Integer, LogicalExpressionPlan> mm =
                new MultiMap<Integer, LogicalExpressionPlan>();
            mm.put(0, aprojplan);
            mm.put(1, bprojplan);
            LOJoin C = new LOJoin(lp, mm, JOINTYPE.HASH, new boolean[] {true, true});
            C.neverUseForRealSetSchema(cschema);
            lp.add(C);
            lp.connect(A, C);
            lp.connect(B, C);
           
            // D = filter
            LogicalExpressionPlan filterPlan = new LogicalExpressionPlan();
            ProjectExpression fy = new ProjectExpression(filterPlan, DataType.INTEGER, 0, 1);
            ConstantExpression fc = new ConstantExpression(filterPlan, DataType.INTEGER, new Integer(0));
            new EqualExpression(filterPlan, fy, fc);
            LOFilter D = new LOFilter(lp, filterPlan);
            D.neverUseForRealSetSchema(cschema);
            lp.add(D);
            lp.connect(C, D);
        }
       
        // Build a second similar plan to test equality
        // A = load
        LogicalPlan lp1 = new LogicalPlan();
        {
            LogicalSchema aschema = new LogicalSchema();
            aschema.addField(new LogicalSchema.LogicalFieldSchema(
                "x", null, DataType.INTEGER));
            LOLoad A = new LOLoad(new FileSpec("/abc",
                new FuncSpec("/fooload", new String[] {"x", "y"})), aschema, lp1);
            lp1.add(A);
           
            // B = load
            LogicalSchema bschema = new LogicalSchema();
            bschema.addField(new LogicalSchema.LogicalFieldSchema(
                "y", null, DataType.INTEGER));
            LOLoad B = new LOLoad(new FileSpec("/def",
                new FuncSpec("PigStorage", "\t")), bschema, lp1);
            lp1.add(B);
           
            // C = join
            LogicalSchema cschema = new LogicalSchema();
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        LogicalPlan lp = new LogicalPlan();
       
        LogicalSchema aschema1 = new LogicalSchema();
        aschema1.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.INTEGER));
        LOLoad load1 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "y"})), aschema1, lp);
        lp.add(load1);
       
        LOLoad load2 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "z"})), aschema1, lp);
        lp.add(load2);
       
        assertFalse(load1.isEqual(load2));
    }
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        LogicalPlan lp = new LogicalPlan();
       
        LogicalSchema aschema1 = new LogicalSchema();
        aschema1.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.INTEGER));
        LOLoad load1 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "y"})), aschema1, lp);
        lp.add(load1);
       
        LOLoad load3 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", "x")), aschema1, lp);
        lp.add(load3);
       
        assertFalse(load1.isEqual(load3));
    }
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        LogicalPlan lp = new LogicalPlan();
       
        LogicalSchema aschema1 = new LogicalSchema();
        aschema1.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.INTEGER));
        LOLoad load1 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "y"})), aschema1, lp);
        lp.add(load1);
       
         // Different function names in FuncSpec
        LOLoad load4 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foobar", new String[] {"x", "z"})), aschema1, lp);
        lp.add(load4);
       
        assertFalse(load1.isEqual(load4));
    }
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    public void testLoadEqualityDifferentFileName() {
        LogicalPlan lp = new LogicalPlan();
        LogicalSchema aschema1 = new LogicalSchema();
        aschema1.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.INTEGER));
        LOLoad load1 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "y"})), aschema1, lp);
        lp.add(load1);
   
        // Different file name
        LOLoad load5 = new LOLoad(new FileSpec("/def",
            new FuncSpec("foo", new String[] {"x", "z"})), aschema1, lp);
        lp.add(load5);
       
        assertFalse(load1.isEqual(load5));
    }
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    public void testRelationalEqualityDifferentSchema() {
        LogicalPlan lp = new LogicalPlan();
        LogicalSchema aschema1 = new LogicalSchema();
        aschema1.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.INTEGER));
        LOLoad load1 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "y"})), aschema1, lp);
        lp.add(load1);
       
        // Different schema
        LogicalSchema aschema2 = new LogicalSchema();
        aschema2.addField(new LogicalSchema.LogicalFieldSchema(
            "x", null, DataType.CHARARRAY));
       
        LOLoad load6 = new LOLoad(new FileSpec("/abc",
            new FuncSpec("foo", new String[] {"x", "z"})), aschema2, lp);
        lp.add(load6);
           
        assertFalse(load1.isEqual(load6));
    }
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