| package edu.uci.ics.hyracks.algebricks.examples.piglet.runtime.functions; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory; |
| import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider; |
| import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage; |
| import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference; |
| import edu.uci.ics.hyracks.dataflow.common.data.marshalling.IntegerSerializerDeserializer; |
| |
| public class IntegerEqFunctionEvaluatorFactory implements ICopyEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final ICopyEvaluatorFactory arg1Factory; |
| |
| private final ICopyEvaluatorFactory arg2Factory; |
| |
| public IntegerEqFunctionEvaluatorFactory(ICopyEvaluatorFactory arg1Factory, ICopyEvaluatorFactory arg2Factory) { |
| this.arg1Factory = arg1Factory; |
| this.arg2Factory = arg2Factory; |
| } |
| |
| @Override |
| public ICopyEvaluator createEvaluator(final IDataOutputProvider output) throws AlgebricksException { |
| return new ICopyEvaluator() { |
| private DataOutput dataout = output.getDataOutput(); |
| private ArrayBackedValueStorage out1 = new ArrayBackedValueStorage(); |
| private ArrayBackedValueStorage out2 = new ArrayBackedValueStorage(); |
| private ICopyEvaluator eval1 = arg1Factory.createEvaluator(out1); |
| private ICopyEvaluator eval2 = arg2Factory.createEvaluator(out2); |
| |
| @Override |
| public void evaluate(IFrameTupleReference tuple) throws AlgebricksException { |
| out1.reset(); |
| eval1.evaluate(tuple); |
| out2.reset(); |
| eval2.evaluate(tuple); |
| int v1 = IntegerSerializerDeserializer.getInt(out1.getByteArray(), 0); |
| int v2 = IntegerSerializerDeserializer.getInt(out2.getByteArray(), 0); |
| boolean r = v1 == v2; |
| try { |
| dataout.writeBoolean(r); |
| } catch (IOException ioe) { |
| throw new AlgebricksException(ioe); |
| } |
| } |
| }; |
| } |
| } |