| // *************************************************************************************************************************** |
| // * 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.juneau; |
| |
| import java.lang.reflect.*; |
| import java.util.*; |
| |
| /** |
| * Subclass of {@link ObjectMap} that avoids adding common default values. |
| */ |
| public class DefaultFilteringObjectMap extends ObjectMap { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Constructor. |
| * |
| * @param m |
| * The object map to copy from. |
| * <br>Can be <jk>null</jk>. |
| */ |
| public DefaultFilteringObjectMap(ObjectMap m) { |
| super(); |
| appendAll(m); |
| } |
| |
| /** |
| * Constructor. |
| */ |
| public DefaultFilteringObjectMap() { |
| super(); |
| } |
| |
| @Override /* ObjectMap */ |
| public ObjectMap append(String key, Object value) { |
| if (! shouldSkip(value)) |
| super.append(key, value); |
| return this; |
| } |
| |
| /** |
| * Returns <jk>true</jk> if the specified value should be skipped. |
| * |
| * @param value The value to check. |
| * @return <jk>true</jk> if the specified value should be skipped. |
| */ |
| protected boolean shouldSkip(Object value) { |
| return |
| value == null |
| || (value instanceof Boolean && value.equals(false)) |
| || (value instanceof Number && ((Number)value).intValue() == -1) |
| || (value.getClass().isArray() && Array.getLength(value) == 0) |
| || (value instanceof Map && ((Map<?,?>)value).isEmpty()) |
| || (value instanceof Collection && ((Collection<?>)value).isEmpty()); |
| |
| } |
| } |