| /* |
| * 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.uima.internal.util; |
| |
| import java.util.HashMap; |
| |
| /** |
| * Straightforward, many-to-one map from Strings to ints, based on a Java |
| * {@link java.util.HashMap HashMap}. |
| * |
| * |
| */ |
| public class StringToIntMap { |
| |
| private static final int DEFAULT_VALUE = 0; |
| |
| private HashMap<String, Integer> map; |
| |
| /** |
| * Constructor. |
| * |
| * @see java.lang.Object#Object() |
| */ |
| public StringToIntMap() { |
| super(); |
| this.map = new HashMap<String, Integer>(); |
| } |
| |
| /** |
| * Check if the the argument string is defined as a key in this map. |
| * |
| * @see java.util.Map#containsKey(java.lang.Object) |
| * @param key |
| * The string to be looked up. |
| * @return <code>true</code> if a value is defined for this string; <code>false</code> else. |
| */ |
| public boolean containsKey(String key) { |
| return this.map.containsKey(key); |
| } |
| |
| /** |
| * Get the value for the key. |
| * |
| * @param key |
| * The string to be looked up. |
| * @return The int value for <code>key</code>, or <code>0</code> if <code>key</code> is not |
| * a key in the map. Use {@link #containsKey(String) containsKey()} to find out if |
| * <code>key</code> is actually defined in the map. |
| */ |
| public int get(String key) { |
| Integer i = (Integer) this.map.get(key); |
| if (i == null) { |
| return DEFAULT_VALUE; |
| } |
| return i.intValue(); |
| } |
| |
| /** |
| * Add a key-value pair to the map. |
| * |
| * @param key |
| * The string key. |
| * @param value |
| * The int value. |
| * @return The previous value of <code>key</code>, if it was set. <code>0</code> else. |
| */ |
| public int put(String key, int value) { |
| Integer i = (Integer) this.map.get(key); |
| int rc; |
| if (i == null) { |
| rc = 0; |
| } else { |
| rc = i.intValue(); |
| } |
| i = Integer.valueOf(value); |
| this.map.put(key, i); |
| return rc; |
| } |
| |
| } |