1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 18 package android.filterfw.core; 19 20 import java.io.StringWriter; 21 import java.util.HashMap; 22 import java.util.Map; 23 24 /** 25 * @hide 26 */ 27 public class KeyValueMap extends HashMap<String, Object> { 28 setKeyValues(Object... keyValues)29 public void setKeyValues(Object... keyValues) { 30 if (keyValues.length % 2 != 0) { 31 throw new RuntimeException("Key-Value arguments passed into setKeyValues must be " 32 + "an alternating list of keys and values!"); 33 } 34 for (int i = 0; i < keyValues.length; i += 2) { 35 if (!(keyValues[i] instanceof String)) { 36 throw new RuntimeException("Key-value argument " + i + " must be a key of type " 37 + "String, but found an object of type " + keyValues[i].getClass() + "!"); 38 } 39 String key = (String)keyValues[i]; 40 Object value = keyValues[i+1]; 41 put(key, value); 42 } 43 } 44 fromKeyValues(Object... keyValues)45 public static KeyValueMap fromKeyValues(Object... keyValues) { 46 KeyValueMap result = new KeyValueMap(); 47 result.setKeyValues(keyValues); 48 return result; 49 } 50 getString(String key)51 public String getString(String key) { 52 Object result = get(key); 53 return result != null ? (String)result : null; 54 } 55 getInt(String key)56 public int getInt(String key) { 57 Object result = get(key); 58 return result != null ? (Integer)result : null; 59 } 60 getFloat(String key)61 public float getFloat(String key) { 62 Object result = get(key); 63 return result != null ? (Float)result : null; 64 } 65 66 @Override toString()67 public String toString() { 68 StringWriter writer = new StringWriter(); 69 for (Map.Entry<String, Object> entry : entrySet()) { 70 String valueString; 71 Object value = entry.getValue(); 72 if (value instanceof String) { 73 valueString = "\"" + value + "\""; 74 } else { 75 valueString = value.toString(); 76 } 77 writer.write(entry.getKey() + " = " + valueString + ";\n"); 78 } 79 return writer.toString(); 80 } 81 82 } 83