teststackobjectpool.html

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<a name="132" href="#132">132</a>         {
<a name="133" href="#133">133</a>             pool.setFactory(<strong>new</strong> SimpleFactory());
<a name="134" href="#134">134</a>             Object obj = pool.borrowObject();        
<a name="135" href="#135">135</a>             assertNotNull(obj);
<a name="136" href="#136">136</a>             pool.returnObject(obj);
<a name="137" href="#137">137</a>         }
<a name="138" href="#138">138</a>         {
<a name="139" href="#139">139</a>             pool.setFactory(<strong>new</strong> SimpleFactory());
<a name="140" href="#140">140</a>             Object obj = pool.borrowObject();        
<a name="141" href="#141">141</a>             assertNotNull(obj);
<a name="142" href="#142">142</a>             pool.returnObject(obj);
<a name="143" href="#143">143</a>         }
<a name="144" href="#144">144</a>     }
<a name="145" href="#145">145</a> 
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>     <strong>public</strong> <strong>void</strong> testBorrowWithSometimesInvalidObjects() throws Exception {
<a name="148" href="#148">148</a>         ObjectPool pool = <strong>new</strong> StackObjectPool(20);
<a name="149" href="#149">149</a>         pool.setFactory(
<a name="150" href="#150">150</a>             <strong>new</strong> PoolableObjectFactory() {
<a name="151" href="#151">151</a>                 <em class="comment">// factory makes Integer objects</em>
<a name="152" href="#152">152</a>                 <strong>int</strong> counter = 0;
<a name="153" href="#153">153</a>                 <strong>public</strong> Object makeObject() { <strong>return</strong> <strong>new</strong> Integer(counter++); }
<a name="154" href="#154">154</a>                 <strong>public</strong> <strong>void</strong> destroyObject(Object obj) { }
<a name="155" href="#155">155</a>                 <strong>public</strong> <strong>boolean</strong> validateObject(Object obj) {
<a name="156" href="#156">156</a>                     <em class="comment">// only odd objects are valid</em>
<a name="157" href="#157">157</a>                     <strong>if</strong>(obj instanceof Integer) {
<a name="158" href="#158">158</a>                         <strong>return</strong> ((((Integer)obj).intValue() % 2) == 1);
<a name="159" href="#159">159</a>                     } <strong>else</strong> {
<a name="160" href="#160">160</a>                         <strong>return</strong> false;
<a name="161" href="#161">161</a>                     }
<a name="162" href="#162">162</a>                 }
<a name="163" href="#163">163</a>                 <strong>public</strong> <strong>void</strong> activateObject(Object obj) { }
<a name="164" href="#164">164</a>                 <strong>public</strong> <strong>void</strong> passivateObject(Object obj) { 
<a name="165" href="#165">165</a>                     <strong>if</strong>(obj instanceof Integer) {
<a name="166" href="#166">166</a>                         <strong>if</strong>((((Integer)obj).intValue() % 3) == 0) {
<a name="167" href="#167">167</a>                             <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Couldn't passivate"</span>);
<a name="168" href="#168">168</a>                         }
<a name="169" href="#169">169</a>                     } <strong>else</strong> {
<a name="170" href="#170">170</a>                         <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Couldn't passivate"</span>);
<a name="171" href="#171">171</a>                     }
<a name="172" href="#172">172</a>                 }
<a name="173" href="#173">173</a>             }
<a name="174" href="#174">174</a>         );
<a name="175" href="#175">175</a> 
<a name="176" href="#176">176</a>         Object[] obj = <strong>new</strong> Object[10];
<a name="177" href="#177">177</a>         <strong>for</strong>(<strong>int</strong> i=0;i&lt;10;i++) {
<a name="178" href="#178">178</a>             obj[i] = pool.borrowObject();
<a name="179" href="#179">179</a>             assertEquals(<span class="string">"Each time we borrow, get one more active."</span>, i+1, pool.getNumActive());
<a name="180" href="#180">180</a>             
<a name="181" href="#181">181</a>         }
<a name="182" href="#182">182</a>         <strong>for</strong>(<strong>int</strong> i=0;i&lt;10;i++) {
<a name="183" href="#183">183</a>             pool.returnObject(obj[i]);
<a name="184" href="#184">184</a>             assertEquals(<span class="string">"Each time we borrow, get one less active."</span>, 9-i, pool.getNumActive());
<a name="185" href="#185">185</a>         }
<a name="186" href="#186">186</a>         assertEquals(7,pool.getNumIdle());
<a name="187" href="#187">187</a>     }
<a name="188" href="#188">188</a>     
<a name="189" href="#189">189</a>     <strong>public</strong> <strong>void</strong> testBorrowReturnWithSometimesInvalidObjects() throws Exception {
<a name="190" href="#190">190</a>         ObjectPool pool = <strong>new</strong> StackObjectPool(20);
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>         <strong>class</strong> TestingPoolableObjectFactory implements PoolableObjectFactory {
<a name="193" href="#193">193</a>             <em class="comment">// factory makes Integer objects</em>
<a name="194" href="#194">194</a>             <strong>int</strong> counter = 0;
<a name="195" href="#195">195</a>             <strong>boolean</strong> reject = false;
<a name="196" href="#196">196</a>             <strong>public</strong> Object makeObject() { <strong>return</strong> <strong>new</strong> Integer(counter++); }
<a name="197" href="#197">197</a>             <strong>public</strong> <strong>void</strong> destroyObject(Object obj) { }
<a name="198" href="#198">198</a>             <strong>public</strong> <strong>boolean</strong> validateObject(Object obj) {
<a name="199" href="#199">199</a>                 <strong>if</strong> (reject) {
<a name="200" href="#200">200</a>                     <em class="comment">// only odd objects are valid</em>
<a name="201" href="#201">201</a>                     <strong>if</strong>(obj instanceof Integer) {
<a name="202" href="#202">202</a>                         <strong>return</strong> ((((Integer)obj).intValue() % 2) == 1);
<a name="203" href="#203">203</a>                     } <strong>else</strong> {
<a name="204" href="#204">204</a>                         <strong>return</strong> false;
<a name="205" href="#205">205</a>                     }
<a name="206" href="#206">206</a>                 } <strong>else</strong> {
<a name="207" href="#207">207</a>                     <strong>return</strong> <strong>true</strong>;
<a name="208" href="#208">208</a>                 }
<a name="209" href="#209">209</a>                     
<a name="210" href="#210">210</a>             }
<a name="211" href="#211">211</a>             <strong>public</strong> <strong>void</strong> activateObject(Object obj) { }
<a name="212" href="#212">212</a>             <strong>public</strong> <strong>void</strong> passivateObject(Object obj) { 
<a name="213" href="#213">213</a>                 <strong>if</strong>(obj instanceof Integer) {
<a name="214" href="#214">214</a>                     <strong>if</strong>((((Integer)obj).intValue() % 3) == 0) {
<a name="215" href="#215">215</a>                         <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Couldn't passivate"</span>);
<a name="216" href="#216">216</a>                     }
<a name="217" href="#217">217</a>                 } <strong>else</strong> {
<a name="218" href="#218">218</a>                     <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Couldn't passivate"</span>);
<a name="219" href="#219">219</a>                 }
<a name="220" href="#220">220</a>             }
<a name="221" href="#221">221</a>         };
<a name="222" href="#222">222</a>         
<a name="223" href="#223">223</a>         TestingPoolableObjectFactory factory = <strong>new</strong> TestingPoolableObjectFactory();
<a name="224" href="#224">224</a>         
<a name="225" href="#225">225</a>         pool.setFactory(factory);
<a name="226" href="#226">226</a> 
<a name="227" href="#227">227</a>         Object[] obj = <strong>new</strong> Object[10];
<a name="228" href="#228">228</a>         <strong>for</strong>(<strong>int</strong> i=0;i&lt;10;i++) {
<a name="229" href="#229">229</a>             obj[i] = pool.borrowObject();
<a name="230" href="#230">230</a>             assertEquals(<span class="string">"Each time we borrow, get one more active."</span>, i+1, pool.getNumActive());
<a name="231" href="#231">231</a>             
<a name="232" href="#232">232</a>         }
<a name="233" href="#233">233</a>         
<a name="234" href="#234">234</a>         <em class="comment">// now reject even numbers</em>
<a name="235" href="#235">235</a>         factory.reject = <strong>true</strong>;
<a name="236" href="#236">236</a>         
<a name="237" href="#237">237</a>         <strong>for</strong>(<strong>int</strong> i=0;i&lt;10;i++) {
<a name="238" href="#238">238</a>             pool.returnObject(obj[i]);
<a name="239" href="#239">239</a>             assertEquals(<span class="string">"Each time we borrow, get one less active."</span>, 9-i, pool.getNumActive());
<a name="240" href="#240">240</a>         }
<a name="241" href="#241">241</a>         assertEquals(3,pool.getNumIdle());
<a name="242" href="#242">242</a>     }
<a name="243" href="#243">243</a>     
<a name="244" href="#244">244</a>     <strong>public</strong> <strong>void</strong> testVariousConstructors() throws Exception {
<a name="245" href="#245">245</a>         {
<a name="246" href="#246">246</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool();
<a name="247" href="#247">247</a>             assertNotNull(pool);
<a name="248" href="#248">248</a>         }
<a name="249" href="#249">249</a>         {
<a name="250" href="#250">250</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool(10);
<a name="251" href="#251">251</a>             assertNotNull(pool);
<a name="252" href="#252">252</a>         }
<a name="253" href="#253">253</a>         {
<a name="254" href="#254">254</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool(10,5);
<a name="255" href="#255">255</a>             assertNotNull(pool);
<a name="256" href="#256">256</a>         }
<a name="257" href="#257">257</a>         {
<a name="258" href="#258">258</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool(<strong>null</strong>);
<a name="259" href="#259">259</a>             assertNotNull(pool);
<a name="260" href="#260">260</a>         }
<a name="261" href="#261">261</a>         {
<a name="262" href="#262">262</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool(<strong>null</strong>,10);
<a name="263" href="#263">263</a>             assertNotNull(pool);
<a name="264" href="#264">264</a>         }
<a name="265" href="#265">265</a>         {
<a name="266" href="#266">266</a>             StackObjectPool pool = <strong>new</strong> StackObjectPool(<strong>null</strong>,10,5);
<a name="267" href="#267">267</a>             assertNotNull(pool);
<a name="268" href="#268">268</a>         }
<a name="269" href="#269">269</a>     }
<a name="270" href="#270">270</a> 
<a name="271" href="#271">271</a>     <strong>private</strong> <strong>final</strong> List destroyed = <strong>new</strong> ArrayList();