| /* |
| * 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.lucene.queryparser.flexible.core.nodes; |
| |
| /** |
| * A query node implements {@link FieldableNode} interface to indicate that its |
| * children and itself are associated to a specific field. |
| * |
| * If it has any children which also implements this interface, it must ensure |
| * the children are associated to the same field. |
| * |
| */ |
| public interface FieldableNode extends QueryNode { |
| |
| /** |
| * Returns the field associated to the node and every node under it. |
| * |
| * @return the field name |
| */ |
| CharSequence getField(); |
| |
| /** |
| * Associates the node to a field. |
| * |
| * @param fieldName |
| * the field name |
| */ |
| void setField(CharSequence fieldName); |
| |
| } |