| /* |
| * 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.sling.nosql.generic.resource.impl; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Calendar; |
| import java.util.Date; |
| import java.util.Map; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.sling.api.resource.ModifiableValueMap; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.wrappers.ValueMapDecorator; |
| |
| /** |
| * Enhances ValueMap that adds special support for deep path access. |
| * Additionally date and binary types are converted to string and back when reading. |
| * Besides this only primitive types String, Integer, Long, Double, Boolean and arrays of them are supported. |
| */ |
| class NoSqlValueMap extends ValueMapDecorator implements ModifiableValueMap { |
| |
| private final Resource resource; |
| private final NoSqlResourceProvider resourceProvider; |
| |
| public NoSqlValueMap(Map<String,Object> map, Resource resource, NoSqlResourceProvider resourceProvider) { |
| super(convertForWriteAll(map)); |
| this.resource = resource; |
| this.resourceProvider = resourceProvider; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T> T get(String name, Class<T> type) { |
| |
| if (type == Date.class) { |
| Calendar value = get(name, Calendar.class); |
| if (value != null) { |
| return (T)value.getTime(); |
| } |
| } |
| else if (type == InputStream.class) { |
| // Support conversion from byte array to InputStream |
| byte[] data = get(name, byte[].class); |
| if (data != null) { |
| return (T)new ByteArrayInputStream(data); |
| } |
| else { |
| return null; |
| } |
| } |
| else if ( type == null ) { |
| return (T) super.get(name); |
| } |
| return super.get(name, type); |
| } |
| |
| @Override |
| public Object put(String key, Object value) { |
| Object result = super.put(key, convertForWrite(value)); |
| resourceProvider.markAsChanged(resource); |
| return result; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void putAll(Map<? extends String, ?> map) { |
| super.putAll((Map<? extends String, ?>)convertForWriteAll((Map<String, Object>)map)); |
| resourceProvider.markAsChanged(resource); |
| } |
| |
| @Override |
| public Object remove(Object key) { |
| Object result = super.remove(key); |
| resourceProvider.markAsChanged(resource); |
| return result; |
| } |
| |
| @Override |
| public void clear() { |
| super.clear(); |
| resourceProvider.markAsChanged(resource); |
| } |
| |
| private static Object convertForWrite(Object value) { |
| if (value instanceof Date) { |
| Calendar calendar = Calendar.getInstance(); |
| calendar.setTime((Date)value); |
| value = calendar; |
| } |
| else if (value instanceof InputStream) { |
| // Store InputStream values as byte array |
| try { |
| value = convertForWrite(IOUtils.toByteArray((InputStream)value)); |
| } catch (IOException ex) { |
| throw new RuntimeException("Unable to convert input stream to byte array."); |
| } |
| } |
| else if (value != null && !isValidType(value.getClass())) { |
| throw new IllegalArgumentException("Data type not supported for NoSqlValueMap: " + value.getClass()); |
| } |
| return value; |
| } |
| |
| static boolean isValidType(Class clazz) { |
| if (clazz.isArray()) { |
| if (clazz.getComponentType() == byte.class) { |
| // byte only supported as array |
| return true; |
| } |
| return isValidType(clazz.getComponentType()); |
| } |
| else { |
| return clazz == String.class |
| || clazz == Integer.class |
| || clazz == Long.class |
| || clazz == Double.class |
| || clazz == Boolean.class |
| || Calendar.class.isAssignableFrom(clazz); |
| } |
| } |
| |
| public static Map<String, Object> convertForWriteAll(Map<String, Object> map) { |
| for (Map.Entry<String, Object> entry : map.entrySet()) { |
| map.put(entry.getKey(), convertForWrite(entry.getValue())); |
| } |
| return map; |
| } |
| |
| } |