| /* |
| * 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.ognl; |
| |
| import java.beans.PropertyEditor; |
| import java.lang.reflect.Member; |
| import java.util.Map; |
| |
| import ognl.OgnlContext; |
| import ognl.TypeConverter; |
| |
| import org.apache.mina.integration.beans.PropertyEditorFactory; |
| |
| /** |
| * {@link PropertyEditor}-based implementation of OGNL {@link TypeConverter}. |
| * This converter uses the {@link PropertyEditor} implementations in |
| * <tt>mina-integration-beans</tt> module to perform conversion. To use this |
| * converter: |
| * <pre><code> |
| * OgnlContext ctx = Ognl.createDefaultContext(root); |
| * ctx.put(OgnlContext.TYPE_CONVERTER_CONTEXT_KEY, new PropertyTypeConverter()); |
| * </code></pre> |
| * You can also override getPropertyEditor(Class, String, Class) |
| * method to have more control over how an appropriate {@link PropertyEditor} |
| * is chosen. |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public class PropertyTypeConverter implements TypeConverter { |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| @SuppressWarnings("unchecked") |
| public Object convertValue(Map ctx, Object target, Member member, String attrName, Object value, Class toType) { |
| if (value == null) { |
| return null; |
| } |
| |
| if (attrName == null) { |
| // I don't know why but OGNL gives null attrName almost always. |
| // Fortunately, we can get the actual attrName with a tiny hack. |
| OgnlContext ognlCtx = (OgnlContext) ctx; |
| attrName = ognlCtx.getCurrentNode().toString().replaceAll("[\" \']+", ""); |
| } |
| |
| if (toType.isAssignableFrom(value.getClass())) { |
| return value; |
| } |
| |
| PropertyEditor e1 = getPropertyEditor(target.getClass(), attrName, value.getClass()); |
| if (e1 == null) { |
| throw new IllegalArgumentException("Can't convert " + value.getClass().getSimpleName() + " to " |
| + String.class.getSimpleName()); |
| } |
| e1.setValue(value); |
| |
| PropertyEditor e2 = getPropertyEditor(target.getClass(), attrName, toType); |
| if (e2 == null) { |
| throw new IllegalArgumentException("Can't convert " + String.class.getSimpleName() + " to " |
| + toType.getSimpleName()); |
| } |
| |
| e2.setAsText(e1.getAsText()); |
| return e2.getValue(); |
| } |
| |
| protected PropertyEditor getPropertyEditor(Class<?> type, String attrName, Class<?> attrType) { |
| return PropertyEditorFactory.getInstance(attrType); |
| } |
| } |