| package edu.uci.ics.asterix.aql.expression; |
| |
| import java.util.List; |
| |
| import edu.uci.ics.asterix.aql.base.Clause; |
| import edu.uci.ics.asterix.aql.base.Expression; |
| import edu.uci.ics.asterix.aql.expression.visitor.IAqlExpressionVisitor; |
| import edu.uci.ics.asterix.aql.expression.visitor.IAqlVisitorWithVoidReturn; |
| import edu.uci.ics.asterix.common.exceptions.AsterixException; |
| |
| public class DistinctClause implements Clause { |
| |
| private List<Expression> distinctByExprs; |
| |
| public DistinctClause(List<Expression> distinctByExpr) { |
| this.distinctByExprs = distinctByExpr; |
| } |
| |
| public List<Expression> getDistinctByExpr() { |
| return distinctByExprs; |
| } |
| |
| @Override |
| public ClauseType getClauseType() { |
| return ClauseType.DISTINCT_BY_CLAUSE; |
| } |
| |
| @Override |
| public <R, T> R accept(IAqlExpressionVisitor<R, T> visitor, T arg) throws AsterixException { |
| return visitor.visitDistinctClause(this, arg); |
| } |
| |
| @Override |
| public <T> void accept(IAqlVisitorWithVoidReturn<T> visitor, T arg) throws AsterixException { |
| visitor.visit(this, arg); |
| } |
| |
| } |