| /* |
| * 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.mina.integration.beans; |
| |
| import java.beans.PropertyEditor; |
| import java.lang.reflect.Array; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.regex.Matcher; |
| |
| /** |
| * A {@link PropertyEditor} which converts a {@link String} into |
| * a one-dimensional array and vice versa. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class ArrayEditor extends AbstractPropertyEditor { |
| private final Class<?> componentType; |
| |
| /** |
| * Creates a new ArrayEditor instance |
| * |
| * @param componentType The component type |
| */ |
| public ArrayEditor(Class<?> componentType) { |
| if (componentType == null) { |
| throw new IllegalArgumentException("componentType"); |
| } |
| |
| this.componentType = componentType; |
| getComponentEditor(); |
| setTrimText(false); |
| } |
| |
| private PropertyEditor getComponentEditor() { |
| PropertyEditor e = PropertyEditorFactory.getInstance(componentType); |
| |
| if (e == null) { |
| throw new IllegalArgumentException("No " + PropertyEditor.class.getSimpleName() + " found for " |
| + componentType.getSimpleName() + '.'); |
| } |
| |
| return e; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected String toText(Object value) { |
| Class<?> componentType = value.getClass().getComponentType(); |
| |
| if (componentType == null) { |
| throw new IllegalArgumentException("not an array: " + value); |
| } |
| |
| PropertyEditor e = PropertyEditorFactory.getInstance(componentType); |
| |
| if (e == null) { |
| throw new IllegalArgumentException("No " + PropertyEditor.class.getSimpleName() + " found for " |
| + componentType.getSimpleName() + '.'); |
| } |
| |
| StringBuilder buf = new StringBuilder(); |
| |
| for (int i = 0; i < Array.getLength(value); i++) { |
| e.setValue(Array.get(value, i)); |
| // TODO normalize. |
| String s = e.getAsText(); |
| buf.append(s); |
| buf.append(", "); |
| } |
| |
| // Remove the last delimiter. |
| if (buf.length() >= 2) { |
| buf.setLength(buf.length() - 2); |
| } |
| |
| return buf.toString(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| protected Object toValue(String text) throws IllegalArgumentException { |
| PropertyEditor e = getComponentEditor(); |
| List<Object> values = new ArrayList<>(); |
| Matcher m = CollectionEditor.ELEMENT.matcher(text); |
| boolean matchedDelimiter = true; |
| |
| while (m.find()) { |
| if (m.group(1) != null) { |
| matchedDelimiter = true; |
| continue; |
| } |
| |
| if (!matchedDelimiter) { |
| throw new IllegalArgumentException("No delimiter between elements: " + text); |
| } |
| |
| // TODO escape here. |
| e.setAsText(m.group()); |
| values.add(e.getValue()); |
| |
| matchedDelimiter = false; |
| if (m.group(2) != null || m.group(3) != null) { |
| // Skip the last '"'. |
| |
| m.region(m.end() + 1, m.regionEnd()); |
| } |
| } |
| |
| Object answer = Array.newInstance(componentType, values.size()); |
| |
| for (int i = 0; i < Array.getLength(answer); i++) { |
| Array.set(answer, i, values.get(i)); |
| } |
| |
| return answer; |
| } |
| } |