Package org.apache.pig.newplan.logical.relational

Examples of org.apache.pig.newplan.logical.relational.LogicalRelationalOperator

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    }

    @Override
    protected OperatorPlan buildPattern() {
        LogicalPlan plan = new LogicalPlan();
        LogicalRelationalOperator op1 = new LOFilter(plan);
        plan.add( op1 );

        return plan;
    }
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        schema.addField(new LogicalSchema.LogicalFieldSchema("name", null, DataType.CHARARRAY));
        schema.addField(new LogicalSchema.LogicalFieldSchema("age", null, DataType.INTEGER));   
        schema.getField(0).uid = 1;
        schema.getField(1).uid = 2;
        schema.getField(2).uid = 3;
        LogicalRelationalOperator l1 = new LOLoad(null, schema, plan, null);
        l1.setAlias("A");
        plan.add(l1);

        schema = new LogicalSchema();
        schema.addField(new LogicalSchema.LogicalFieldSchema("id", null, DataType.INTEGER));
        schema.addField(new LogicalSchema.LogicalFieldSchema("dept", null, DataType.INTEGER));
        schema.addField(new LogicalSchema.LogicalFieldSchema("salary", null, DataType.FLOAT));   
        schema.getField(0).uid = 4;
        schema.getField(1).uid = 5;
        schema.getField(2).uid = 6;
        LogicalRelationalOperator l2 = new LOLoad(null, schema, plan, null);
        l2.setAlias("B");
        plan.add(l2);
       
        MultiMap<Integer, LogicalExpressionPlan> joinPlans = new MultiMap<Integer, LogicalExpressionPlan>();
       
        LogicalRelationalOperator j1 = new LOJoin(plan, joinPlans, LOJoin.JOINTYPE.HASH, new boolean[]{true, true});
        LogicalExpressionPlan p1 = new LogicalExpressionPlan();
        ProjectExpression lp1 = new ProjectExpression(p1, 0, 1, j1);
        p1.add(lp1);
        joinPlans.put(0, p1);
       
        LogicalExpressionPlan p2 = new LogicalExpressionPlan();
        ProjectExpression lp2 = new ProjectExpression(p2, 1, 1, j1);
        p2.add(lp2);
        joinPlans.put(1, p2);
       
        j1.setAlias("C");
        plan.add(j1);
       
        // build an expression with no AND
        LogicalExpressionPlan p3 = new LogicalExpressionPlan();
        LogicalRelationalOperator f1 = new LOFilter(plan, p3);
       
        LogicalExpression lp3 = new ProjectExpression(p3, 0, 2, f1);
        LogicalExpression cont = new ConstantExpression(p3, new Integer(3));
        p3.add(lp3);
        p3.add(cont);      
        LogicalExpression eq = new EqualExpression(p3, lp3, cont);       
       
       
        f1.setAlias("D");
        plan.add(f1);
       
        LogicalRelationalOperator s1 = new LOStore(plan);
        plan.add(s1);      
       
        // load --|-join - filter - store
        // load --|  
        plan.connect(l1, j1);
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      throws FrontendException {

  LOForEach foreach = new LOForEach(plan);
  LOCogroup groupby = new LOCogroup(plan);
  LogicalPlan innerPlan = new LogicalPlan();
  LogicalRelationalOperator gen = new LOGenerate(innerPlan);

  injectForeachOperator(loc, op, foreach);

  // Get all column attributes from the input relation.
  // Create ProjectExpression for all columns. Based on the
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        schema.addField(new LogicalSchema.LogicalFieldSchema("name", null, DataType.CHARARRAY));
        schema.addField(new LogicalSchema.LogicalFieldSchema("age", null, DataType.INTEGER));   
        schema.getField(0).uid = 1;
        schema.getField(1).uid = 2;
        schema.getField(2).uid = 3;
        LogicalRelationalOperator l1 = new LOLoad(schema, plan);
        l1.setAlias("A");
        plan.add(l1);

        schema = new LogicalSchema();
        schema.addField(new LogicalSchema.LogicalFieldSchema("id", null, DataType.INTEGER));
        schema.addField(new LogicalSchema.LogicalFieldSchema("dept", null, DataType.INTEGER));
        schema.addField(new LogicalSchema.LogicalFieldSchema("salary", null, DataType.FLOAT));   
        schema.getField(0).uid = 4;
        schema.getField(1).uid = 5;
        schema.getField(2).uid = 6;
        LogicalRelationalOperator l2 = new LOLoad(schema, plan);
        l2.setAlias("B");
        plan.add(l2);
       
        MultiMap<Integer, LogicalExpressionPlan> joinPlans = new MultiMap<Integer, LogicalExpressionPlan>();
       
        LogicalRelationalOperator j1 = new LOJoin(plan, joinPlans, LOJoin.JOINTYPE.HASH, new boolean[]{true, true});
        LogicalExpressionPlan p1 = new LogicalExpressionPlan();
        ProjectExpression lp1 = new ProjectExpression(p1, 0, 1, j1);
        p1.add(lp1);
        joinPlans.put(0, p1);
       
        LogicalExpressionPlan p2 = new LogicalExpressionPlan();
        ProjectExpression lp2 = new ProjectExpression(p2, 1, 1, j1);
        p2.add(lp2);
        joinPlans.put(1, p2);
       
        j1.setAlias("C");
        plan.add(j1);
       
        // build an expression with no AND
        LogicalExpressionPlan p3 = new LogicalExpressionPlan();
        LogicalRelationalOperator f1 = new LOFilter(plan, p3);
       
        LogicalExpression lp3 = new ProjectExpression(p3, 0, 2, f1);
        LogicalExpression cont = new ConstantExpression(p3, new Integer(3));
        p3.add(lp3);
        p3.add(cont);      
        LogicalExpression eq = new EqualExpression(p3, lp3, cont);       
       
       
        f1.setAlias("D");
        plan.add(f1);
       
        LogicalRelationalOperator s1 = new LOStore(plan, null, null, null);
        plan.add(s1);      
       
        // load --|-join - filter - store
        // load --|  
        plan.connect(l1, j1);
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    public Schema dumpSchema(String alias) throws IOException {
        try {
            if ("@".equals(alias)) {
                alias = getLastRel();
            }
            LogicalRelationalOperator op = getOperatorForAlias( alias );
            LogicalSchema schema = op.getSchema();

            boolean pretty = "true".equals(pigContext.getProperties()
                                   .getProperty(PRETTY_PRINT_SCHEMA_PROPERTY));

            if (schema != null) {
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        return pigContext.getExecutionEngine().compile( currDAG.lp, null );
    }

    private LogicalRelationalOperator getOperatorForAlias(String alias) throws IOException {
        buildStorePlan (alias);
        LogicalRelationalOperator op = (LogicalRelationalOperator)currDAG.getOperator( alias );
        if( op == null ) {
            int errCode = 1005;
            String msg = "No plan for " + alias + " to describe";
            throw new FrontendException(msg, errCode, PigException.INPUT, false, null);
        }
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        public LogicalPlan getPlan(String alias) throws IOException {
            LogicalPlan plan = lp;

            if (alias != null) {
                LogicalRelationalOperator op = (LogicalRelationalOperator) operators.get(alias);
                if(op == null) {
                    int errCode = 1003;
                    String msg = "Unable to find an operator for alias " + alias;
                    throw new FrontendException(msg, errCode, PigException.INPUT);
                }
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    }

    @Override
    protected OperatorPlan buildPattern() {
        LogicalPlan plan = new LogicalPlan();
        LogicalRelationalOperator foreach = new LOForEach(plan);
        plan.add( foreach );
        return plan;
    }
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        try {
            pigContext.inDumpSchema = true;
            if ("@".equals(alias)) {
                alias = getLastRel();
            }
            LogicalRelationalOperator op = getOperatorForAlias( alias );
            LogicalSchema schema = op.getSchema();

            boolean pretty = "true".equals(pigContext.getProperties()
                                   .getProperty(PRETTY_PRINT_SCHEMA_PROPERTY));

            if (schema != null) {
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        return currDAG.lp;
    }

    private LogicalRelationalOperator getOperatorForAlias(String alias) throws IOException {
        buildStorePlan (alias);
        LogicalRelationalOperator op = (LogicalRelationalOperator)currDAG.getOperator( alias );
        if( op == null ) {
            int errCode = 1005;
            String msg = "No plan for " + alias + " to describe";
            throw new FrontendException(msg, errCode, PigException.INPUT, false, null);
        }
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