hyracks-fullstack/algebricks/algebricks-core/src/main/java/org/apache/hyracks/algebricks/core/algebra/operators/physical/SplitPOperator.java

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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hyracks.algebricks.core.algebra.operators.physical;

import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
import org.apache.hyracks.algebricks.core.algebra.base.IHyracksJobBuilder;
import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
import org.apache.hyracks.algebricks.core.algebra.base.PhysicalOperatorTag;
import org.apache.hyracks.algebricks.core.algebra.expressions.IExpressionRuntimeProvider;
import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator;
import org.apache.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema;
import org.apache.hyracks.algebricks.core.algebra.operators.logical.SplitOperator;
import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenContext;
import org.apache.hyracks.algebricks.core.jobgen.impl.JobGenHelper;
import org.apache.hyracks.algebricks.data.IBinaryIntegerInspectorFactory;
import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
import org.apache.hyracks.algebricks.runtime.operators.std.SplitOperatorDescriptor;
import org.apache.hyracks.api.dataflow.value.RecordDescriptor;
import org.apache.hyracks.api.job.IOperatorDescriptorRegistry;

public class SplitPOperator extends AbstractReplicatePOperator {

    @Override
    public PhysicalOperatorTag getOperatorTag() {
        return PhysicalOperatorTag.SPLIT;
    }

    @Override
    public void contributeRuntimeOperator(IHyracksJobBuilder builder, JobGenContext context, ILogicalOperator op,
            IOperatorSchema propagatedSchema, IOperatorSchema[] inputSchemas, IOperatorSchema outerPlanSchema)
            throws AlgebricksException {
        SplitOperator sop = (SplitOperator) op;
        int outputArity = sop.getOutputArity();

        IOperatorDescriptorRegistry spec = builder.getJobSpec();
        RecordDescriptor recDescriptor = JobGenHelper.mkRecordDescriptor(context.getTypeEnvironment(op),
                propagatedSchema, context);

        IExpressionRuntimeProvider expressionRuntimeProvider = context.getExpressionRuntimeProvider();
        IScalarEvaluatorFactory brachingExprEvalFactory = expressionRuntimeProvider.createEvaluatorFactory(
                sop.getBranchingExpression().getValue(), context.getTypeEnvironment(op), inputSchemas, context);

        IBinaryIntegerInspectorFactory intInsepctorFactory = context.getBinaryIntegerInspectorFactory();

        SplitOperatorDescriptor splitOpDesc = new SplitOperatorDescriptor(spec, recDescriptor, outputArity,
                brachingExprEvalFactory, intInsepctorFactory);

        contributeOpDesc(builder, (AbstractLogicalOperator) op, splitOpDesc);
        ILogicalOperator src = op.getInputs().get(0).getValue();
        builder.contributeGraphEdge(src, 0, op, 0);
    }
}