| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package edu.uci.ics.hyracks.algebricks.core.algebra.visitors;
|
|
|
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.AggregateFunctionCallExpression;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ConstantExpression;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.ScalarFunctionCallExpression;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.StatefulFunctionCallExpression;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.UnnestingFunctionCallExpression;
|
| import edu.uci.ics.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression;
|
|
|
| public interface ILogicalExpressionVisitor<R, T> {
|
| public R visitConstantExpression(ConstantExpression expr, T arg) throws AlgebricksException;
|
|
|
| public R visitVariableReferenceExpression(VariableReferenceExpression expr, T arg) throws AlgebricksException;
|
|
|
| public R visitAggregateFunctionCallExpression(AggregateFunctionCallExpression expr, T arg)
|
| throws AlgebricksException;
|
|
|
| public R visitScalarFunctionCallExpression(ScalarFunctionCallExpression expr, T arg) throws AlgebricksException;
|
|
|
| public R visitStatefulFunctionCallExpression(StatefulFunctionCallExpression expr, T arg) throws AlgebricksException;
|
|
|
| public R visitUnnestingFunctionCallExpression(UnnestingFunctionCallExpression expr, T arg)
|
| throws AlgebricksException;
|
| }
|