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| <a name="1" href="#1">1</a> <strong class="jxr_keyword">package</strong> org.apache.velocity.app.event; |
| <a name="2" href="#2">2</a> |
| <a name="3" href="#3">3</a> <em class="jxr_comment">/*</em> |
| <a name="4" href="#4">4</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one</em> |
| <a name="5" href="#5">5</a> <em class="jxr_comment"> * or more contributor license agreements. See the NOTICE file</em> |
| <a name="6" href="#6">6</a> <em class="jxr_comment"> * distributed with this work for additional information</em> |
| <a name="7" href="#7">7</a> <em class="jxr_comment"> * regarding copyright ownership. The ASF licenses this file</em> |
| <a name="8" href="#8">8</a> <em class="jxr_comment"> * to you under the Apache License, Version 2.0 (the</em> |
| <a name="9" href="#9">9</a> <em class="jxr_comment"> * "License"); you may not use this file except in compliance</em> |
| <a name="10" href="#10">10</a> <em class="jxr_comment"> * with the License. You may obtain a copy of the License at</em> |
| <a name="11" href="#11">11</a> <em class="jxr_comment"> *</em> |
| <a name="12" href="#12">12</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="13" href="#13">13</a> <em class="jxr_comment"> *</em> |
| <a name="14" href="#14">14</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing,</em> |
| <a name="15" href="#15">15</a> <em class="jxr_comment"> * software distributed under the License is distributed on an</em> |
| <a name="16" href="#16">16</a> <em class="jxr_comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</em> |
| <a name="17" href="#17">17</a> <em class="jxr_comment"> * KIND, either express or implied. See the License for the</em> |
| <a name="18" href="#18">18</a> <em class="jxr_comment"> * specific language governing permissions and limitations</em> |
| <a name="19" href="#19">19</a> <em class="jxr_comment"> * under the License. </em> |
| <a name="20" href="#20">20</a> <em class="jxr_comment"> */</em> |
| <a name="21" href="#21">21</a> |
| <a name="22" href="#22">22</a> <strong class="jxr_keyword">import</strong> java.util.ArrayList; |
| <a name="23" href="#23">23</a> <strong class="jxr_keyword">import</strong> java.util.HashSet; |
| <a name="24" href="#24">24</a> <strong class="jxr_keyword">import</strong> java.util.Iterator; |
| <a name="25" href="#25">25</a> <strong class="jxr_keyword">import</strong> java.util.List; |
| <a name="26" href="#26">26</a> <strong class="jxr_keyword">import</strong> java.util.Set; |
| <a name="27" href="#27">27</a> |
| <a name="28" href="#28">28</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.context.Context; |
| <a name="29" href="#29">29</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.context.InternalEventContext; |
| <a name="30" href="#30">30</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.runtime.RuntimeServices; |
| <a name="31" href="#31">31</a> <strong class="jxr_keyword">import</strong> org.apache.velocity.util.RuntimeServicesAware; |
| <a name="32" href="#32">32</a> |
| <a name="33" href="#33">33</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="34" href="#34">34</a> <em class="jxr_javadoccomment"> * Stores the event handlers. Event handlers can be assigned on a per</em> |
| <a name="35" href="#35">35</a> <em class="jxr_javadoccomment"> * VelocityEngine instance basis by specifying the class names in the</em> |
| <a name="36" href="#36">36</a> <em class="jxr_javadoccomment"> * velocity.properties file. Event handlers may also be assigned on a per-page</em> |
| <a name="37" href="#37">37</a> <em class="jxr_javadoccomment"> * basis by creating a new instance of EventCartridge, adding the event</em> |
| <a name="38" href="#38">38</a> <em class="jxr_javadoccomment"> * handlers, and then calling attachToContext. For clarity, it's recommended</em> |
| <a name="39" href="#39">39</a> <em class="jxr_javadoccomment"> * that one approach or the other be followed, as the second method is primarily</em> |
| <a name="40" href="#40">40</a> <em class="jxr_javadoccomment"> * presented for backwards compatibility.</em> |
| <a name="41" href="#41">41</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="42" href="#42">42</a> <em class="jxr_javadoccomment"> * <P></em> |
| <a name="43" href="#43">43</a> <em class="jxr_javadoccomment"> * Note that Event Handlers follow a filter pattern, with multiple event</em> |
| <a name="44" href="#44">44</a> <em class="jxr_javadoccomment"> * handlers allowed for each event. When the appropriate event occurs, all the</em> |
| <a name="45" href="#45">45</a> <em class="jxr_javadoccomment"> * appropriate event handlers are called in the sequence they were added to the</em> |
| <a name="46" href="#46">46</a> <em class="jxr_javadoccomment"> * Event Cartridge. See the javadocs of the specific event handler interfaces</em> |
| <a name="47" href="#47">47</a> <em class="jxr_javadoccomment"> * for more details.</em> |
| <a name="48" href="#48">48</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="49" href="#49">49</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="mailto:wglass@wglass@forio.com" target="alexandria_uri">mailto:wglass@wglass@forio.com</a>">Will Glass-Husain </a></em> |
| <a name="50" href="#50">50</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="mailto:geirm@optonline.net" target="alexandria_uri">mailto:geirm@optonline.net</a>">Geir Magnusson Jr. </a></em> |
| <a name="51" href="#51">51</a> <em class="jxr_javadoccomment"> * @author <a href="<a href="mailto:j_a_fernandez@yahoo.com" target="alexandria_uri">mailto:j_a_fernandez@yahoo.com</a>">Jose Alberto Fernandez </a></em> |
| <a name="52" href="#52">52</a> <em class="jxr_javadoccomment"> * @version $Id: EventCartridge.java 470256 2006-11-02 07:20:36Z wglass $</em> |
| <a name="53" href="#53">53</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="54" href="#54">54</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/velocity/app/event/EventCartridge.html">EventCartridge</a> |
| <a name="55" href="#55">55</a> { |
| <a name="56" href="#56">56</a> <strong class="jxr_keyword">private</strong> List referenceHandlers = <strong class="jxr_keyword">new</strong> ArrayList(); |
| <a name="57" href="#57">57</a> <strong class="jxr_keyword">private</strong> List nullSetHandlers = <strong class="jxr_keyword">new</strong> ArrayList(); |
| <a name="58" href="#58">58</a> <strong class="jxr_keyword">private</strong> List methodExceptionHandlers = <strong class="jxr_keyword">new</strong> ArrayList(); |
| <a name="59" href="#59">59</a> <strong class="jxr_keyword">private</strong> List includeHandlers = <strong class="jxr_keyword">new</strong> ArrayList(); |
| <a name="60" href="#60">60</a> <strong class="jxr_keyword">private</strong> List invalidReferenceHandlers = <strong class="jxr_keyword">new</strong> ArrayList(); |
| <a name="61" href="#61">61</a> |
| <a name="62" href="#62">62</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="63" href="#63">63</a> <em class="jxr_javadoccomment"> * Ensure that handlers are not initialized more than once.</em> |
| <a name="64" href="#64">64</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="65" href="#65">65</a> Set initializedHandlers = <strong class="jxr_keyword">new</strong> HashSet(); |
| <a name="66" href="#66">66</a> |
| <a name="67" href="#67">67</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="68" href="#68">68</a> <em class="jxr_javadoccomment"> * Adds an event handler(s) to the Cartridge. This method</em> |
| <a name="69" href="#69">69</a> <em class="jxr_javadoccomment"> * will find all possible event handler interfaces supported</em> |
| <a name="70" href="#70">70</a> <em class="jxr_javadoccomment"> * by the passed in object.</em> |
| <a name="71" href="#71">71</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="72" href="#72">72</a> <em class="jxr_javadoccomment"> * @param ev object impementing a valid EventHandler-derived interface</em> |
| <a name="73" href="#73">73</a> <em class="jxr_javadoccomment"> * @return true if a supported interface, false otherwise or if null</em> |
| <a name="74" href="#74">74</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="75" href="#75">75</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> addEventHandler( EventHandler ev ) |
| <a name="76" href="#76">76</a> { |
| <a name="77" href="#77">77</a> <strong class="jxr_keyword">if</strong> (ev == <strong class="jxr_keyword">null</strong>) |
| <a name="78" href="#78">78</a> { |
| <a name="79" href="#79">79</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="80" href="#80">80</a> } |
| <a name="81" href="#81">81</a> |
| <a name="82" href="#82">82</a> <strong class="jxr_keyword">boolean</strong> found = false; |
| <a name="83" href="#83">83</a> |
| <a name="84" href="#84">84</a> <strong class="jxr_keyword">if</strong> ( ev instanceof ReferenceInsertionEventHandler) |
| <a name="85" href="#85">85</a> { |
| <a name="86" href="#86">86</a> addReferenceInsertionEventHandler( (ReferenceInsertionEventHandler) ev ); |
| <a name="87" href="#87">87</a> found = <strong class="jxr_keyword">true</strong>; |
| <a name="88" href="#88">88</a> } |
| <a name="89" href="#89">89</a> |
| <a name="90" href="#90">90</a> <strong class="jxr_keyword">if</strong> ( ev instanceof NullSetEventHandler ) |
| <a name="91" href="#91">91</a> { |
| <a name="92" href="#92">92</a> addNullSetEventHandler( (NullSetEventHandler) ev ); |
| <a name="93" href="#93">93</a> found = <strong class="jxr_keyword">true</strong>; |
| <a name="94" href="#94">94</a> } |
| <a name="95" href="#95">95</a> |
| <a name="96" href="#96">96</a> <strong class="jxr_keyword">if</strong> ( ev instanceof MethodExceptionEventHandler ) |
| <a name="97" href="#97">97</a> { |
| <a name="98" href="#98">98</a> addMethodExceptionHandler( (MethodExceptionEventHandler) ev ); |
| <a name="99" href="#99">99</a> found = <strong class="jxr_keyword">true</strong>; |
| <a name="100" href="#100">100</a> } |
| <a name="101" href="#101">101</a> |
| <a name="102" href="#102">102</a> <strong class="jxr_keyword">if</strong> ( ev instanceof IncludeEventHandler ) |
| <a name="103" href="#103">103</a> { |
| <a name="104" href="#104">104</a> addIncludeEventHandler( (IncludeEventHandler) ev ); |
| <a name="105" href="#105">105</a> found = <strong class="jxr_keyword">true</strong>; |
| <a name="106" href="#106">106</a> } |
| <a name="107" href="#107">107</a> |
| <a name="108" href="#108">108</a> <strong class="jxr_keyword">if</strong> ( ev instanceof InvalidReferenceEventHandler ) |
| <a name="109" href="#109">109</a> { |
| <a name="110" href="#110">110</a> addInvalidReferenceEventHandler( (InvalidReferenceEventHandler) ev ); |
| <a name="111" href="#111">111</a> found = <strong class="jxr_keyword">true</strong>; |
| <a name="112" href="#112">112</a> } |
| <a name="113" href="#113">113</a> |
| <a name="114" href="#114">114</a> <strong class="jxr_keyword">return</strong> found; |
| <a name="115" href="#115">115</a> } |
| <a name="116" href="#116">116</a> |
| <a name="117" href="#117">117</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="118" href="#118">118</a> <em class="jxr_javadoccomment"> * Add a reference insertion event handler to the Cartridge.</em> |
| <a name="119" href="#119">119</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="120" href="#120">120</a> <em class="jxr_javadoccomment"> * @param ev ReferenceInsertionEventHandler</em> |
| <a name="121" href="#121">121</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="122" href="#122">122</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addReferenceInsertionEventHandler( ReferenceInsertionEventHandler ev ) |
| <a name="123" href="#123">123</a> { |
| <a name="124" href="#124">124</a> referenceHandlers.add( ev ); |
| <a name="125" href="#125">125</a> } |
| <a name="126" href="#126">126</a> |
| <a name="127" href="#127">127</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="128" href="#128">128</a> <em class="jxr_javadoccomment"> * Add a null set event handler to the Cartridge.</em> |
| <a name="129" href="#129">129</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="130" href="#130">130</a> <em class="jxr_javadoccomment"> * @param ev NullSetEventHandler</em> |
| <a name="131" href="#131">131</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="132" href="#132">132</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addNullSetEventHandler( NullSetEventHandler ev ) |
| <a name="133" href="#133">133</a> { |
| <a name="134" href="#134">134</a> nullSetHandlers.add( ev ); |
| <a name="135" href="#135">135</a> } |
| <a name="136" href="#136">136</a> |
| <a name="137" href="#137">137</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="138" href="#138">138</a> <em class="jxr_javadoccomment"> * Add a method exception event handler to the Cartridge.</em> |
| <a name="139" href="#139">139</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="140" href="#140">140</a> <em class="jxr_javadoccomment"> * @param ev MethodExceptionEventHandler</em> |
| <a name="141" href="#141">141</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="142" href="#142">142</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addMethodExceptionHandler( MethodExceptionEventHandler ev ) |
| <a name="143" href="#143">143</a> { |
| <a name="144" href="#144">144</a> methodExceptionHandlers.add( ev ); |
| <a name="145" href="#145">145</a> } |
| <a name="146" href="#146">146</a> |
| <a name="147" href="#147">147</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="148" href="#148">148</a> <em class="jxr_javadoccomment"> * Add an include event handler to the Cartridge.</em> |
| <a name="149" href="#149">149</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="150" href="#150">150</a> <em class="jxr_javadoccomment"> * @param ev IncludeEventHandler</em> |
| <a name="151" href="#151">151</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="152" href="#152">152</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addIncludeEventHandler( IncludeEventHandler ev ) |
| <a name="153" href="#153">153</a> { |
| <a name="154" href="#154">154</a> includeHandlers.add( ev ); |
| <a name="155" href="#155">155</a> } |
| <a name="156" href="#156">156</a> |
| <a name="157" href="#157">157</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="158" href="#158">158</a> <em class="jxr_javadoccomment"> * Add an invalid reference event handler to the Cartridge.</em> |
| <a name="159" href="#159">159</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="160" href="#160">160</a> <em class="jxr_javadoccomment"> * @param ev InvalidReferenceEventHandler</em> |
| <a name="161" href="#161">161</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="162" href="#162">162</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> addInvalidReferenceEventHandler( InvalidReferenceEventHandler ev ) |
| <a name="163" href="#163">163</a> { |
| <a name="164" href="#164">164</a> invalidReferenceHandlers.add( ev ); |
| <a name="165" href="#165">165</a> } |
| <a name="166" href="#166">166</a> |
| <a name="167" href="#167">167</a> |
| <a name="168" href="#168">168</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="169" href="#169">169</a> <em class="jxr_javadoccomment"> * Removes an event handler(s) from the Cartridge. This method will find all</em> |
| <a name="170" href="#170">170</a> <em class="jxr_javadoccomment"> * possible event handler interfaces supported by the passed in object and</em> |
| <a name="171" href="#171">171</a> <em class="jxr_javadoccomment"> * remove them.</em> |
| <a name="172" href="#172">172</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="173" href="#173">173</a> <em class="jxr_javadoccomment"> * @param ev object impementing a valid EventHandler-derived interface</em> |
| <a name="174" href="#174">174</a> <em class="jxr_javadoccomment"> * @return true if event handler was previously registered, false if not</em> |
| <a name="175" href="#175">175</a> <em class="jxr_javadoccomment"> * found</em> |
| <a name="176" href="#176">176</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="177" href="#177">177</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">boolean</strong> removeEventHandler( EventHandler ev ) |
| <a name="178" href="#178">178</a> { |
| <a name="179" href="#179">179</a> <strong class="jxr_keyword">if</strong> ( ev == <strong class="jxr_keyword">null</strong> ) |
| <a name="180" href="#180">180</a> { |
| <a name="181" href="#181">181</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="182" href="#182">182</a> } |
| <a name="183" href="#183">183</a> |
| <a name="184" href="#184">184</a> <strong class="jxr_keyword">boolean</strong> found = false; |
| <a name="185" href="#185">185</a> |
| <a name="186" href="#186">186</a> <strong class="jxr_keyword">if</strong> ( ev instanceof ReferenceInsertionEventHandler ) |
| <a name="187" href="#187">187</a> <strong class="jxr_keyword">return</strong> referenceHandlers.remove( ev ); |
| <a name="188" href="#188">188</a> |
| <a name="189" href="#189">189</a> <strong class="jxr_keyword">if</strong> ( ev instanceof NullSetEventHandler ) |
| <a name="190" href="#190">190</a> <strong class="jxr_keyword">return</strong> nullSetHandlers.remove( ev ); |
| <a name="191" href="#191">191</a> |
| <a name="192" href="#192">192</a> <strong class="jxr_keyword">if</strong> ( ev instanceof MethodExceptionEventHandler ) |
| <a name="193" href="#193">193</a> <strong class="jxr_keyword">return</strong> methodExceptionHandlers.remove(ev ); |
| <a name="194" href="#194">194</a> |
| <a name="195" href="#195">195</a> <strong class="jxr_keyword">if</strong> ( ev instanceof IncludeEventHandler ) |
| <a name="196" href="#196">196</a> <strong class="jxr_keyword">return</strong> includeHandlers.remove( ev ); |
| <a name="197" href="#197">197</a> |
| <a name="198" href="#198">198</a> <strong class="jxr_keyword">if</strong> ( ev instanceof InvalidReferenceEventHandler ) |
| <a name="199" href="#199">199</a> <strong class="jxr_keyword">return</strong> invalidReferenceHandlers.remove( ev ); |
| <a name="200" href="#200">200</a> |
| <a name="201" href="#201">201</a> <strong class="jxr_keyword">return</strong> found; |
| <a name="202" href="#202">202</a> } |
| <a name="203" href="#203">203</a> |
| <a name="204" href="#204">204</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="205" href="#205">205</a> <em class="jxr_javadoccomment"> * Iterate through all the stored ReferenceInsertionEventHandler objects</em> |
| <a name="206" href="#206">206</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="207" href="#207">207</a> <em class="jxr_javadoccomment"> * @return iterator of handler objects</em> |
| <a name="208" href="#208">208</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="209" href="#209">209</a> <strong class="jxr_keyword">public</strong> Iterator getReferenceInsertionEventHandlers() |
| <a name="210" href="#210">210</a> { |
| <a name="211" href="#211">211</a> <strong class="jxr_keyword">return</strong> referenceHandlers.iterator(); |
| <a name="212" href="#212">212</a> } |
| <a name="213" href="#213">213</a> |
| <a name="214" href="#214">214</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="215" href="#215">215</a> <em class="jxr_javadoccomment"> * Iterate through all the stored NullSetEventHandler objects</em> |
| <a name="216" href="#216">216</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="217" href="#217">217</a> <em class="jxr_javadoccomment"> * @return iterator of handler objects</em> |
| <a name="218" href="#218">218</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="219" href="#219">219</a> <strong class="jxr_keyword">public</strong> Iterator getNullSetEventHandlers() |
| <a name="220" href="#220">220</a> { |
| <a name="221" href="#221">221</a> <strong class="jxr_keyword">return</strong> nullSetHandlers.iterator(); |
| <a name="222" href="#222">222</a> } |
| <a name="223" href="#223">223</a> |
| <a name="224" href="#224">224</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="225" href="#225">225</a> <em class="jxr_javadoccomment"> * Iterate through all the stored MethodExceptionEventHandler objects</em> |
| <a name="226" href="#226">226</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="227" href="#227">227</a> <em class="jxr_javadoccomment"> * @return iterator of handler objects</em> |
| <a name="228" href="#228">228</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="229" href="#229">229</a> <strong class="jxr_keyword">public</strong> Iterator getMethodExceptionEventHandlers() |
| <a name="230" href="#230">230</a> { |
| <a name="231" href="#231">231</a> <strong class="jxr_keyword">return</strong> methodExceptionHandlers.iterator(); |
| <a name="232" href="#232">232</a> } |
| <a name="233" href="#233">233</a> |
| <a name="234" href="#234">234</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="235" href="#235">235</a> <em class="jxr_javadoccomment"> * Iterate through all the stored IncludeEventHandlers objects</em> |
| <a name="236" href="#236">236</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="237" href="#237">237</a> <em class="jxr_javadoccomment"> * @return iterator of handler objects</em> |
| <a name="238" href="#238">238</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="239" href="#239">239</a> <strong class="jxr_keyword">public</strong> Iterator getIncludeEventHandlers() |
| <a name="240" href="#240">240</a> { |
| <a name="241" href="#241">241</a> <strong class="jxr_keyword">return</strong> includeHandlers.iterator(); |
| <a name="242" href="#242">242</a> } |
| <a name="243" href="#243">243</a> |
| <a name="244" href="#244">244</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="245" href="#245">245</a> <em class="jxr_javadoccomment"> * Iterate through all the stored InvalidReferenceEventHandlers objects</em> |
| <a name="246" href="#246">246</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="247" href="#247">247</a> <em class="jxr_javadoccomment"> * @return iterator of handler objects</em> |
| <a name="248" href="#248">248</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="249" href="#249">249</a> <strong class="jxr_keyword">public</strong> Iterator getInvalidReferenceEventHandlers() |
| <a name="250" href="#250">250</a> { |
| <a name="251" href="#251">251</a> <strong class="jxr_keyword">return</strong> invalidReferenceHandlers.iterator(); |
| <a name="252" href="#252">252</a> } |
| <a name="253" href="#253">253</a> |
| <a name="254" href="#254">254</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="255" href="#255">255</a> <em class="jxr_javadoccomment"> * Attached the EventCartridge to the context</em> |
| <a name="256" href="#256">256</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="257" href="#257">257</a> <em class="jxr_javadoccomment"> * Final because not something one should mess with lightly :)</em> |
| <a name="258" href="#258">258</a> <em class="jxr_javadoccomment"> *</em> |
| <a name="259" href="#259">259</a> <em class="jxr_javadoccomment"> * @param context context to attach to</em> |
| <a name="260" href="#260">260</a> <em class="jxr_javadoccomment"> * @return true if successful, false otherwise</em> |
| <a name="261" href="#261">261</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="262" href="#262">262</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">boolean</strong> attachToContext( Context context ) |
| <a name="263" href="#263">263</a> { |
| <a name="264" href="#264">264</a> <strong class="jxr_keyword">if</strong> ( context instanceof InternalEventContext ) |
| <a name="265" href="#265">265</a> { |
| <a name="266" href="#266">266</a> <a href="../../../../../org/apache/velocity/context/InternalEventContext.html">InternalEventContext</a> iec = (InternalEventContext) context; |
| <a name="267" href="#267">267</a> |
| <a name="268" href="#268">268</a> iec.attachEventCartridge( <strong class="jxr_keyword">this</strong> ); |
| <a name="269" href="#269">269</a> |
| <a name="270" href="#270">270</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="271" href="#271">271</a> <em class="jxr_javadoccomment"> * while it's tempting to call setContext on each handler from here,</em> |
| <a name="272" href="#272">272</a> <em class="jxr_javadoccomment"> * this needs to be done before each method call. This is</em> |
| <a name="273" href="#273">273</a> <em class="jxr_javadoccomment"> * because the specific context will change as inner contexts</em> |
| <a name="274" href="#274">274</a> <em class="jxr_javadoccomment"> * are linked in through macros, foreach, or directly by the user.</em> |
| <a name="275" href="#275">275</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="276" href="#276">276</a> |
| <a name="277" href="#277">277</a> <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>; |
| <a name="278" href="#278">278</a> } |
| <a name="279" href="#279">279</a> <strong class="jxr_keyword">else</strong> |
| <a name="280" href="#280">280</a> { |
| <a name="281" href="#281">281</a> <strong class="jxr_keyword">return</strong> false; |
| <a name="282" href="#282">282</a> } |
| <a name="283" href="#283">283</a> } |
| <a name="284" href="#284">284</a> |
| <a name="285" href="#285">285</a> <em class="jxr_javadoccomment">/**</em> |
| <a name="286" href="#286">286</a> <em class="jxr_javadoccomment"> * Initialize the handlers. For global handlers this is called when Velocity</em> |
| <a name="287" href="#287">287</a> <em class="jxr_javadoccomment"> * is initialized. For local handlers this is called when the first handler</em> |
| <a name="288" href="#288">288</a> <em class="jxr_javadoccomment"> * is executed. Handlers will not be initialized more than once.</em> |
| <a name="289" href="#289">289</a> <em class="jxr_javadoccomment"> * </em> |
| <a name="290" href="#290">290</a> <em class="jxr_javadoccomment"> * @param rs</em> |
| <a name="291" href="#291">291</a> <em class="jxr_javadoccomment"> * @throws Exception</em> |
| <a name="292" href="#292">292</a> <em class="jxr_javadoccomment"> */</em> |
| <a name="293" href="#293">293</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> initialize (RuntimeServices rs) <strong class="jxr_keyword">throws</strong> Exception |
| <a name="294" href="#294">294</a> { |
| <a name="295" href="#295">295</a> |
| <a name="296" href="#296">296</a> <strong class="jxr_keyword">for</strong> ( Iterator i = referenceHandlers.iterator(); i.hasNext(); ) |
| <a name="297" href="#297">297</a> { |
| <a name="298" href="#298">298</a> <a href="../../../../../org/apache/velocity/app/event/EventHandler.html">EventHandler</a> eh = ( EventHandler ) i.next(); |
| <a name="299" href="#299">299</a> <strong class="jxr_keyword">if</strong> ( (eh instanceof RuntimeServicesAware) && |
| <a name="300" href="#300">300</a> !initializedHandlers.contains(eh) ) |
| <a name="301" href="#301">301</a> { |
| <a name="302" href="#302">302</a> ((<a href="../../../../../org/apache/velocity/util/RuntimeServicesAware.html">RuntimeServicesAware</a>) eh).setRuntimeServices ( rs ); |
| <a name="303" href="#303">303</a> initializedHandlers.add( eh ); |
| <a name="304" href="#304">304</a> } |
| <a name="305" href="#305">305</a> } |
| <a name="306" href="#306">306</a> |
| <a name="307" href="#307">307</a> <strong class="jxr_keyword">for</strong> ( Iterator i = nullSetHandlers.iterator(); i.hasNext(); ) |
| <a name="308" href="#308">308</a> { |
| <a name="309" href="#309">309</a> <a href="../../../../../org/apache/velocity/app/event/EventHandler.html">EventHandler</a> eh = ( EventHandler ) i.next(); |
| <a name="310" href="#310">310</a> <strong class="jxr_keyword">if</strong> ( (eh instanceof RuntimeServicesAware) && |
| <a name="311" href="#311">311</a> !initializedHandlers.contains(eh) ) |
| <a name="312" href="#312">312</a> { |
| <a name="313" href="#313">313</a> ((<a href="../../../../../org/apache/velocity/util/RuntimeServicesAware.html">RuntimeServicesAware</a>) eh).setRuntimeServices ( rs ); |
| <a name="314" href="#314">314</a> initializedHandlers.add( eh ); |
| <a name="315" href="#315">315</a> } |
| <a name="316" href="#316">316</a> } |
| <a name="317" href="#317">317</a> |
| <a name="318" href="#318">318</a> <strong class="jxr_keyword">for</strong> ( Iterator i = methodExceptionHandlers.iterator(); i.hasNext(); ) |
| <a name="319" href="#319">319</a> { |
| <a name="320" href="#320">320</a> <a href="../../../../../org/apache/velocity/app/event/EventHandler.html">EventHandler</a> eh = ( EventHandler ) i.next(); |
| <a name="321" href="#321">321</a> <strong class="jxr_keyword">if</strong> ( (eh instanceof RuntimeServicesAware) && |
| <a name="322" href="#322">322</a> !initializedHandlers.contains(eh) ) |
| <a name="323" href="#323">323</a> { |
| <a name="324" href="#324">324</a> ((<a href="../../../../../org/apache/velocity/util/RuntimeServicesAware.html">RuntimeServicesAware</a>) eh).setRuntimeServices ( rs ); |
| <a name="325" href="#325">325</a> initializedHandlers.add( eh ); |
| <a name="326" href="#326">326</a> } |
| <a name="327" href="#327">327</a> } |
| <a name="328" href="#328">328</a> |
| <a name="329" href="#329">329</a> <strong class="jxr_keyword">for</strong> ( Iterator i = includeHandlers.iterator(); i.hasNext(); ) |
| <a name="330" href="#330">330</a> { |
| <a name="331" href="#331">331</a> <a href="../../../../../org/apache/velocity/app/event/EventHandler.html">EventHandler</a> eh = ( EventHandler ) i.next(); |
| <a name="332" href="#332">332</a> <strong class="jxr_keyword">if</strong> ( (eh instanceof RuntimeServicesAware) && |
| <a name="333" href="#333">333</a> !initializedHandlers.contains(eh) ) |
| <a name="334" href="#334">334</a> { |
| <a name="335" href="#335">335</a> ((<a href="../../../../../org/apache/velocity/util/RuntimeServicesAware.html">RuntimeServicesAware</a>) eh).setRuntimeServices ( rs ); |
| <a name="336" href="#336">336</a> initializedHandlers.add( eh ); |
| <a name="337" href="#337">337</a> } |
| <a name="338" href="#338">338</a> } |
| <a name="339" href="#339">339</a> |
| <a name="340" href="#340">340</a> <strong class="jxr_keyword">for</strong> ( Iterator i = invalidReferenceHandlers.iterator(); i.hasNext(); ) |
| <a name="341" href="#341">341</a> { |
| <a name="342" href="#342">342</a> <a href="../../../../../org/apache/velocity/app/event/EventHandler.html">EventHandler</a> eh = ( EventHandler ) i.next(); |
| <a name="343" href="#343">343</a> <strong class="jxr_keyword">if</strong> ( (eh instanceof RuntimeServicesAware) && |
| <a name="344" href="#344">344</a> !initializedHandlers.contains(eh) ) |
| <a name="345" href="#345">345</a> { |
| <a name="346" href="#346">346</a> ((<a href="../../../../../org/apache/velocity/util/RuntimeServicesAware.html">RuntimeServicesAware</a>) eh).setRuntimeServices ( rs ); |
| <a name="347" href="#347">347</a> initializedHandlers.add( eh ); |
| <a name="348" href="#348">348</a> } |
| <a name="349" href="#349">349</a> } |
| <a name="350" href="#350">350</a> |
| <a name="351" href="#351">351</a> } |
| <a name="352" href="#352">352</a> |
| <a name="353" href="#353">353</a> |
| <a name="354" href="#354">354</a> } |
| </pre> |
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