| /* |
| * |
| * 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.qpid.server.util; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public class MapValueConverter |
| { |
| |
| public static String getStringAttribute(String name, Map<String,Object> attributes, String defaultVal) |
| { |
| final Object value = attributes.get(name); |
| return toString(value, defaultVal); |
| } |
| |
| public static String toString(final Object value) |
| { |
| return toString(value, null); |
| } |
| |
| public static String toString(final Object value, String defaultVal) |
| { |
| if (value == null) |
| { |
| return defaultVal; |
| } |
| else if (value instanceof String) |
| { |
| return (String)value; |
| } |
| return String.valueOf(value); |
| } |
| |
| public static String getStringAttribute(String name, Map<String, Object> attributes) |
| { |
| assertMandatoryAttribute(name, attributes); |
| return getStringAttribute(name, attributes, null); |
| } |
| |
| private static void assertMandatoryAttribute(String name, Map<String, Object> attributes) |
| { |
| if (!attributes.containsKey(name)) |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not found"); |
| } |
| } |
| |
| public static Map<String,Object> getMapAttribute(String name, Map<String,Object> attributes, Map<String,Object> defaultVal) |
| { |
| final Object value = attributes.get(name); |
| if(value == null) |
| { |
| return defaultVal; |
| } |
| else if(value instanceof Map) |
| { |
| @SuppressWarnings("unchecked") |
| Map<String,Object> retVal = (Map<String,Object>) value; |
| return retVal; |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type Map"); |
| } |
| } |
| |
| |
| @SuppressWarnings({ "unchecked", "rawtypes" }) |
| public static <E extends Enum> E getEnumAttribute(Class<E> clazz, String name, Map<String,Object> attributes, E defaultVal) |
| { |
| Object obj = attributes.get(name); |
| if(obj == null) |
| { |
| return defaultVal; |
| } |
| else if(clazz.isInstance(obj)) |
| { |
| return (E) obj; |
| } |
| else if(obj instanceof String) |
| { |
| return (E) Enum.valueOf(clazz, (String)obj); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type " + clazz.getSimpleName()); |
| } |
| } |
| |
| public static <E extends Enum<?>> E getEnumAttribute(Class<E> clazz, String name, Map<String,Object> attributes) |
| { |
| assertMandatoryAttribute(name, attributes); |
| return getEnumAttribute(clazz, name, attributes, null); |
| } |
| |
| @SuppressWarnings({ "unchecked" }) |
| public static <T extends Enum<T>> T toEnum(String name, Object rawValue, Class<T> enumType) |
| { |
| if (enumType.isInstance(rawValue)) |
| { |
| return (T) rawValue; |
| } |
| else if (rawValue instanceof String) |
| { |
| return (T) Enum.valueOf(enumType, (String) rawValue); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type " |
| + enumType.getSimpleName()); |
| } |
| } |
| |
| public static Boolean getBooleanAttribute(String name, Map<String,Object> attributes, Boolean defaultValue) |
| { |
| Object obj = attributes.get(name); |
| return toBoolean(name, obj, defaultValue); |
| } |
| |
| public static Boolean toBoolean(String name, Object obj) |
| { |
| return toBoolean(name, obj, null); |
| } |
| |
| public static Boolean toBoolean(String name, Object obj, Boolean defaultValue) |
| { |
| if(obj == null) |
| { |
| return defaultValue; |
| } |
| else if(obj instanceof Boolean) |
| { |
| return (Boolean) obj; |
| } |
| else if(obj instanceof String) |
| { |
| return Boolean.parseBoolean((String) obj); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type Boolean"); |
| } |
| } |
| |
| |
| public static boolean getBooleanAttribute(String name, Map<String, Object> attributes) |
| { |
| assertMandatoryAttribute(name, attributes); |
| return getBooleanAttribute(name, attributes, null); |
| } |
| |
| public static Integer getIntegerAttribute(String name, Map<String,Object> attributes, Integer defaultValue) |
| { |
| Object obj = attributes.get(name); |
| return toInteger(name, obj, defaultValue); |
| } |
| |
| public static Integer toInteger(String name, Object obj) |
| { |
| return toInteger(name, obj, null); |
| } |
| |
| public static Integer toInteger(String name, Object obj, Integer defaultValue) |
| { |
| if(obj == null) |
| { |
| return defaultValue; |
| } |
| else if(obj instanceof Number) |
| { |
| return ((Number) obj).intValue(); |
| } |
| else if(obj instanceof String) |
| { |
| return Integer.valueOf((String) obj); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type Integer"); |
| } |
| } |
| |
| public static Integer getIntegerAttribute(String name, Map<String,Object> attributes) |
| { |
| assertMandatoryAttribute(name, attributes); |
| return getIntegerAttribute(name, attributes, null); |
| } |
| |
| public static Long getLongAttribute(String name, Map<String,Object> attributes, Long defaultValue) |
| { |
| Object obj = attributes.get(name); |
| return toLong(name, obj, defaultValue); |
| } |
| |
| public static Long toLong(String name, Object obj) |
| { |
| return toLong(name, obj, null); |
| } |
| |
| public static Long toLong(String name, Object obj, Long defaultValue) |
| { |
| if(obj == null) |
| { |
| return defaultValue; |
| } |
| else if(obj instanceof Number) |
| { |
| return ((Number) obj).longValue(); |
| } |
| else if(obj instanceof String) |
| { |
| return Long.valueOf((String) obj); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type Long"); |
| } |
| } |
| |
| public static <T> Set<T> getSetAttribute(String name, Map<String,Object> attributes) |
| { |
| assertMandatoryAttribute(name, attributes); |
| return getSetAttribute(name, attributes, Collections.<T>emptySet()); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <T> Set<T> getSetAttribute(String name, Map<String,Object> attributes, Set<T> defaultValue) |
| { |
| Object obj = attributes.get(name); |
| if(obj == null) |
| { |
| return defaultValue; |
| } |
| else if(obj instanceof Set) |
| { |
| return (Set<T>) obj; |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + " is not of required type Set"); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static <T extends Enum<T>> Set<T> getEnumSetAttribute(String name, Map<String, Object> attributes, Class<T> clazz) |
| { |
| Object obj = attributes.get(name); |
| Object[] items = null; |
| if (obj == null) |
| { |
| return null; |
| } |
| else if (obj instanceof Collection) |
| { |
| Collection<?> data = (Collection<?>) obj; |
| items = data.toArray(new Object[data.size()]); |
| } |
| else if (obj instanceof String[]) |
| { |
| items = (String[]) obj; |
| } |
| else if (obj instanceof Object[]) |
| { |
| items = (Object[]) obj; |
| } |
| else |
| { |
| throw new IllegalArgumentException("Value for attribute " + name + "[" + obj |
| + "] cannot be converted into set of enum of " + clazz); |
| } |
| Set<T> set = new HashSet<T>(); |
| for (int i = 0; i < items.length; i++) |
| { |
| T item = null; |
| Object value = items[i]; |
| if (value instanceof String) |
| { |
| item = (T) Enum.valueOf(clazz, (String) value); |
| } |
| else if (clazz.isInstance(value)) |
| { |
| item = (T) value; |
| } |
| else |
| { |
| throw new IllegalArgumentException("Cannot convert " + value + " from [" + obj + "] into enum of " + clazz |
| + " for attribute " + name); |
| } |
| set.add(item); |
| } |
| return set; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static Map<String, Object> convert(Map<String, Object> configurationAttributes, Map<String, Class<?>> attributeTypes) |
| { |
| Map<String, Object> attributes = new HashMap<String, Object>(); |
| for (Map.Entry<String, Class<?>> attributeEntry : attributeTypes.entrySet()) |
| { |
| String attributeName = attributeEntry.getKey(); |
| if (configurationAttributes.containsKey(attributeName)) |
| { |
| Class<?> classObject = attributeEntry.getValue(); |
| Object rawValue = configurationAttributes.get(attributeName); |
| Object value = null; |
| if (classObject == Long.class || classObject == long.class) |
| { |
| value = toLong(attributeName, rawValue); |
| } |
| else if (classObject == Integer.class || classObject == int.class) |
| { |
| value = toInteger(attributeName, rawValue); |
| } |
| else if (classObject == Boolean.class || classObject == boolean.class) |
| { |
| value = toBoolean(attributeName, rawValue); |
| } |
| else if (classObject == String.class) |
| { |
| value = toString(rawValue); |
| } |
| else if (Enum.class.isAssignableFrom(classObject)) |
| { |
| @SuppressWarnings("rawtypes") |
| Class<Enum> enumType = (Class<Enum>)classObject; |
| value = toEnum(attributeName, rawValue, enumType); |
| } |
| else |
| { |
| throw new IllegalArgumentException("Cannot convert '" + rawValue + "' into " + classObject); |
| } |
| attributes.put(attributeName, value); |
| } |
| } |
| return attributes; |
| } |
| |
| } |