| package org.apache.commons.ognl; |
| |
| /* |
| * 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. |
| */ |
| |
| /** |
| * This class has predefined instances that stand for OGNL's special "dynamic subscripts" for getting at the first, |
| * middle, or last elements of a list. In OGNL expressions, these subscripts look like special kinds of array indexes: |
| * [^] means the first element, [$] means the last, [|] means the middle, and [*] means the whole list. |
| */ |
| public class DynamicSubscript |
| { |
| public static final int FIRST = 0; |
| |
| public static final int MID = 1; |
| |
| public static final int LAST = 2; |
| |
| public static final int ALL = 3; |
| |
| public static final DynamicSubscript first = new DynamicSubscript( FIRST ); |
| |
| public static final DynamicSubscript mid = new DynamicSubscript( MID ); |
| |
| public static final DynamicSubscript last = new DynamicSubscript( LAST ); |
| |
| public static final DynamicSubscript all = new DynamicSubscript( ALL ); |
| |
| private final int flag; |
| |
| private DynamicSubscript( int flag ) |
| { |
| this.flag = flag; |
| } |
| |
| public int getFlag() |
| { |
| return flag; |
| } |
| |
| @Override |
| public String toString() |
| { |
| switch ( flag ) |
| { |
| case FIRST: |
| return "^"; |
| case MID: |
| return "|"; |
| case LAST: |
| return "$"; |
| case ALL: |
| return "*"; |
| default: |
| return "?"; // Won't happen |
| } |
| } |
| } |