| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * 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 |
| * |
| * 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 org.apache.ofbiz.entity.condition; |
| |
| import java.util.List; |
| |
| /** |
| * <p>Represents the conditions to be used to constrain a query.</p> |
| * <p>An EntityCondition can represent various type of constraints, including:</p> |
| * <ul> |
| * <li>EntityConditionList: a list of EntityConditions, combined with the operator specified |
| * <li>EntityExpr: for simple expressions or expressions that combine EntityConditions |
| * <li>EntityFieldMap: a map of fields where the field (key) equals the value, combined with the operator specified |
| * </ul> |
| * These can be used in various combinations using the EntityConditionList and EntityExpr objects. |
| * |
| */ |
| public interface EntityConditionVisitor { |
| <T> void visit(T obj); |
| <T> void accept(T obj); |
| void acceptObject(Object obj); |
| void acceptEntityCondition(EntityCondition condition); |
| <T extends EntityCondition> void acceptEntityJoinOperator(EntityJoinOperator op, List<T> conditions); |
| <L,R,T> void acceptEntityOperator(EntityOperator<L, R, T> op, L lhs, R rhs); |
| <L,R> void acceptEntityComparisonOperator(EntityComparisonOperator<L, R> op, L lhs, R rhs); |
| void acceptEntityConditionValue(EntityConditionValue value); |
| void acceptEntityFieldValue(EntityFieldValue value); |
| |
| void acceptEntityExpr(EntityExpr expr); |
| <T extends EntityCondition> void acceptEntityConditionList(EntityConditionList<T> list); |
| void acceptEntityFieldMap(EntityFieldMap fieldMap); |
| void acceptEntityConditionFunction(EntityConditionFunction func, EntityCondition nested); |
| <T extends Comparable<?>> void acceptEntityFunction(EntityFunction<T> func); |
| void acceptEntityWhereString(EntityWhereString condition); |
| |
| void acceptEntityDateFilterCondition(EntityDateFilterCondition condition); |
| } |