| package edu.uci.ics.asterix.om.typecomputer.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import edu.uci.ics.asterix.om.typecomputer.base.IResultTypeComputer; |
| import edu.uci.ics.asterix.om.types.AUnionType; |
| import edu.uci.ics.asterix.om.types.BuiltinType; |
| import edu.uci.ics.asterix.om.types.IAType; |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.metadata.IMetadataProvider; |
| |
| public class OptionalAInt8TypeComputer implements IResultTypeComputer { |
| |
| public static final OptionalAInt8TypeComputer INSTANCE = new OptionalAInt8TypeComputer(); |
| |
| private OptionalAInt8TypeComputer() { |
| } |
| |
| @Override |
| public IAType computeType(ILogicalExpression expression, IVariableTypeEnvironment env, |
| IMetadataProvider<?, ?> metadataProvider) throws AlgebricksException { |
| List<IAType> unionList = new ArrayList<IAType>(); |
| unionList.add(BuiltinType.ANULL); |
| unionList.add(BuiltinType.AINT8); |
| return new AUnionType(unionList, "OptionalInt8"); |
| } |
| |
| } |