| /* |
| * 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.maven.internal.impl; |
| |
| import java.util.AbstractMap; |
| import java.util.AbstractSet; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.NoSuchElementException; |
| import java.util.Set; |
| |
| class PropertiesAsMap extends AbstractMap<String, String> { |
| |
| private final Map<Object, Object> properties; |
| |
| PropertiesAsMap(Map<Object, Object> properties) { |
| this.properties = properties; |
| } |
| |
| @Override |
| public Set<Entry<String, String>> entrySet() { |
| return new AbstractSet<Entry<String, String>>() { |
| @Override |
| public Iterator<Entry<String, String>> iterator() { |
| Iterator<Entry<Object, Object>> iterator = properties.entrySet().iterator(); |
| return new Iterator<Entry<String, String>>() { |
| Entry<String, String> next; |
| |
| { |
| advance(); |
| } |
| |
| private void advance() { |
| next = null; |
| while (iterator.hasNext()) { |
| Entry<Object, Object> e = iterator.next(); |
| if (PropertiesAsMap.matches(e)) { |
| next = new Entry<String, String>() { |
| @Override |
| public String getKey() { |
| return (String) e.getKey(); |
| } |
| |
| @Override |
| public String getValue() { |
| return (String) e.getValue(); |
| } |
| |
| @Override |
| public String setValue(String value) { |
| return (String) e.setValue(value); |
| } |
| }; |
| break; |
| } |
| } |
| } |
| |
| @Override |
| public boolean hasNext() { |
| return next != null; |
| } |
| |
| @Override |
| public Entry<String, String> next() { |
| Entry<String, String> item = next; |
| if (item == null) { |
| throw new NoSuchElementException(); |
| } |
| advance(); |
| return item; |
| } |
| }; |
| } |
| |
| @Override |
| public int size() { |
| return (int) properties.entrySet().stream() |
| .filter(PropertiesAsMap::matches) |
| .count(); |
| } |
| }; |
| } |
| |
| private static boolean matches(Entry<Object, Object> entry) { |
| return entry.getKey() instanceof String && entry.getValue() instanceof String; |
| } |
| } |