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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /><title>PropertyTypeConverter xref</title><link type="text/css" rel="stylesheet" href="../../../../../stylesheet.css" /></head><body><div id="overview"><a href="../../../../../../apidocs/org/apache/mina/integration/ognl/PropertyTypeConverter.html">View Javadoc</a></div><pre><a name="1" href="#1">1</a> <em class="jxr_comment">/*</em><a name="2" href="#2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em><a name="3" href="#3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em><a name="4" href="#4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em><a name="5" href="#5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em><a name="6" href="#6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em><a name="7" href="#7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em><a name="8" href="#8">8</a> <em class="jxr_comment"> * </em><a name="9" href="#9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em><a name="10" href="#10">10</a> <em class="jxr_comment"> * </em><a name="11" href="#11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em><a name="12" href="#12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em><a name="13" href="#13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em><a name="14" href="#14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em><a name="15" href="#15">15</a> <em class="jxr_comment"> * limitations under the License.</em><a name="16" href="#16">16</a> <em class="jxr_comment"> */</em><a name="17" href="#17">17</a> <strong class="jxr_keyword">package</strong> org.apache.mina.integration.ognl;<a name="18" href="#18">18</a> <a name="19" href="#19">19</a> <strong class="jxr_keyword">import</strong> java.beans.PropertyEditor;<a name="20" href="#20">20</a> <strong class="jxr_keyword">import</strong> java.lang.reflect.Member;<a name="21" href="#21">21</a> <strong class="jxr_keyword">import</strong> java.util.Map;<a name="22" href="#22">22</a> <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> ognl.OgnlContext;<a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> ognl.TypeConverter;<a name="25" href="#25">25</a> <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> org.apache.mina.integration.beans.PropertyEditorFactory;<a name="27" href="#27">27</a> <a name="28" href="#28">28</a> <em class="jxr_javadoccomment">/**</em><a name="29" href="#29">29</a> <em class="jxr_javadoccomment"> * {@link PropertyEditor}-based implementation of OGNL {@link TypeConverter}.</em><a name="30" href="#30">30</a> <em class="jxr_javadoccomment"> * This converter uses the {@link PropertyEditor} implementations in</em><a name="31" href="#31">31</a> <em class="jxr_javadoccomment"> * <tt>mina-integration-beans</tt> module to perform conversion. To use this</em><a name="32" href="#32">32</a> <em class="jxr_javadoccomment"> * converter:</em><a name="33" href="#33">33</a> <em class="jxr_javadoccomment"> * <pre><code></em><a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * OgnlContext ctx = Ognl.createDefaultContext(root);</em><a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * ctx.put(OgnlContext.TYPE_CONVERTER_CONTEXT_KEY, new PropertyTypeConverter());</em><a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * </code></pre></em><a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * You can also override {@link #getPropertyEditor(Class, String, Class)}</em><a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * method to have more control over how an appropriate {@link PropertyEditor}</em><a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * is chosen.</em><a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * </em><a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> * @author The Apache MINA Project (dev@mina.apache.org)</em><a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * @version $Rev: 601229 $, $Date: 2007-12-05 00:13:18 -0700 (Wed, 05 Dec 2007) $</em><a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> */</em><a name="44" href="#44">44</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/mina/integration/ognl/PropertyTypeConverter.html">PropertyTypeConverter</a> implements TypeConverter {<a name="45" href="#45">45</a> <a name="46" href="#46">46</a> @SuppressWarnings(<span class="jxr_string">"unchecked"</span>)<a name="47" href="#47">47</a> <strong class="jxr_keyword">public</strong> Object convertValue(Map ctx, Object target, Member member,<a name="48" href="#48">48</a> String attrName, Object value, Class toType) {<a name="49" href="#49">49</a> <strong class="jxr_keyword">if</strong> (value == <strong class="jxr_keyword">null</strong>) {<a name="50" href="#50">50</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">null</strong>;<a name="51" href="#51">51</a> }<a name="52" href="#52">52</a> <a name="53" href="#53">53</a> <strong class="jxr_keyword">if</strong> (attrName == <strong class="jxr_keyword">null</strong>) {<a name="54" href="#54">54</a> <em class="jxr_comment">// I don't know why but OGNL gives null attrName almost always.</em><a name="55" href="#55">55</a> <em class="jxr_comment">// Fortunately, we can get the actual attrName with a tiny hack.</em><a name="56" href="#56">56</a> OgnlContext ognlCtx = (OgnlContext) ctx;<a name="57" href="#57">57</a> attrName = ognlCtx.getCurrentNode().toString().replaceAll(<a name="58" href="#58">58</a> <span class="jxr_string">"[\" \']+"</span>, <span class="jxr_string">""</span>);<a name="59" href="#59">59</a> }<a name="60" href="#60">60</a> <a name="61" href="#61">61</a> <strong class="jxr_keyword">if</strong> (toType.isAssignableFrom(value.getClass())) {<a name="62" href="#62">62</a> <strong class="jxr_keyword">return</strong> value;<a name="63" href="#63">63</a> }<a name="64" href="#64">64</a> <a name="65" href="#65">65</a> PropertyEditor e1 = getPropertyEditor(<a name="66" href="#66">66</a> target.getClass(), attrName, value.getClass());<a name="67" href="#67">67</a> <strong class="jxr_keyword">if</strong> (e1 == <strong class="jxr_keyword">null</strong>) {<a name="68" href="#68">68</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Can't convert "</span><a name="69" href="#69">69</a> + value.getClass().getSimpleName() + <span class="jxr_string">" to "</span><a name="70" href="#70">70</a> + String.<strong class="jxr_keyword">class</strong>.getSimpleName());<a name="71" href="#71">71</a> }<a name="72" href="#72">72</a> e1.setValue(value);<a name="73" href="#73">73</a> <a name="74" href="#74">74</a> PropertyEditor e2 = getPropertyEditor(<a name="75" href="#75">75</a> target.getClass(), attrName, toType);<a name="76" href="#76">76</a> <strong class="jxr_keyword">if</strong> (e2 == <strong class="jxr_keyword">null</strong>) {<a name="77" href="#77">77</a> <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(<span class="jxr_string">"Can't convert "</span><a name="78" href="#78">78</a> + String.<strong class="jxr_keyword">class</strong>.getSimpleName() + <span class="jxr_string">" to "</span><a name="79" href="#79">79</a> + toType.getSimpleName());<a name="80" href="#80">80</a> }<a name="81" href="#81">81</a> <a name="82" href="#82">82</a> e2.setAsText(e1.getAsText());<a name="83" href="#83">83</a> <strong class="jxr_keyword">return</strong> e2.getValue();<a name="84" href="#84">84</a> }<a name="85" href="#85">85</a> <a name="86" href="#86">86</a> @SuppressWarnings(<span class="jxr_string">"unused"</span>)<a name="87" href="#87">87</a> <strong class="jxr_keyword">protected</strong> PropertyEditor getPropertyEditor(Class<?> type, String attrName, Class<?> attrType) {<a name="88" href="#88">88</a> <strong class="jxr_keyword">return</strong> PropertyEditorFactory.getInstance(attrType);<a name="89" href="#89">89</a> }<a name="90" href="#90">90</a> }</pre><hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body></html>⌨️ 快捷键说明
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