testsoftrefoutofmemory.html

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<a name="98" href="#98">98</a>          <strong>catch</strong> (OutOfMemoryError ex) { }
<a name="99" href="#99">99</a>          
<a name="100" href="#100">100</a>         obj = pool.borrowObject();
<a name="101" href="#101">101</a>         assertEquals(<span class="string">"1001"</span>, obj);
<a name="102" href="#102">102</a>         pool.returnObject(obj);
<a name="103" href="#103">103</a>         obj = <strong>null</strong>;
<a name="104" href="#104">104</a>             
<a name="105" href="#105">105</a>         assertEquals(1, pool.getNumIdle());
<a name="106" href="#106">106</a>     }
<a name="107" href="#107">107</a> 
<a name="108" href="#108">108</a>     <strong>public</strong> <strong>void</strong> testOutOfMemoryLarge() throws Exception {
<a name="109" href="#109">109</a>         pool = <strong>new</strong> SoftReferenceObjectPool(<strong>new</strong> LargePoolableObjectFactory(1000000));
<a name="110" href="#110">110</a> 
<a name="111" href="#111">111</a>         Object obj = pool.borrowObject();
<a name="112" href="#112">112</a>         assertTrue(((String)obj).startsWith(<span class="string">"1."</span>));
<a name="113" href="#113">113</a>         pool.returnObject(obj);
<a name="114" href="#114">114</a>         obj = <strong>null</strong>;
<a name="115" href="#115">115</a>         
<a name="116" href="#116">116</a>         assertEquals(1, pool.getNumIdle());
<a name="117" href="#117">117</a> 
<a name="118" href="#118">118</a>         <strong>try</strong> {
<a name="119" href="#119">119</a>             HashMap map = <strong>new</strong> HashMap();
<a name="120" href="#120">120</a> 
<a name="121" href="#121">121</a>             <strong>for</strong> (<strong>int</strong> i = 0; i &lt; 1000000; i++) {
<a name="122" href="#122">122</a>                 map.put(<strong>new</strong> Integer(i), <strong>new</strong> String(<span class="string">"Fred Flintstone"</span> + i));
<a name="123" href="#123">123</a>             }
<a name="124" href="#124">124</a>         }
<a name="125" href="#125">125</a>         <strong>catch</strong> (OutOfMemoryError ex) { }
<a name="126" href="#126">126</a>         
<a name="127" href="#127">127</a>         obj = pool.borrowObject();
<a name="128" href="#128">128</a>         assertTrue(((String)obj).startsWith(<span class="string">"2."</span>));
<a name="129" href="#129">129</a>         pool.returnObject(obj);
<a name="130" href="#130">130</a>         obj = <strong>null</strong>;
<a name="131" href="#131">131</a>             
<a name="132" href="#132">132</a>         assertEquals(1, pool.getNumIdle());
<a name="133" href="#133">133</a>     }
<a name="134" href="#134">134</a> 
<a name="135" href="#135">135</a>     <strong>public</strong> <strong>void</strong> testOutOfMemoryKeepMap() throws Exception {
<a name="136" href="#136">136</a>         pool = <strong>new</strong> SoftReferenceObjectPool(<strong>new</strong> LargePoolableObjectFactory(1000000));
<a name="137" href="#137">137</a> 
<a name="138" href="#138">138</a>         Object obj = pool.borrowObject();
<a name="139" href="#139">139</a>         assertTrue(((String)obj).startsWith(<span class="string">"1."</span>));
<a name="140" href="#140">140</a>         pool.returnObject(obj);
<a name="141" href="#141">141</a>         obj = <strong>null</strong>;
<a name="142" href="#142">142</a>         
<a name="143" href="#143">143</a>         assertEquals(1, pool.getNumIdle());
<a name="144" href="#144">144</a> 
<a name="145" href="#145">145</a>         <em class="comment">// allocate map outside try/catch block</em>
<a name="146" href="#146">146</a>         HashMap map = <strong>new</strong> HashMap();
<a name="147" href="#147">147</a>         <strong>try</strong> {
<a name="148" href="#148">148</a>             <strong>for</strong> (<strong>int</strong> i = 0; i &lt; 1000000; i++) {
<a name="149" href="#149">149</a>                 map.put(<strong>new</strong> Integer(i), <strong>new</strong> String(<span class="string">"Fred Flintstone"</span> + i));
<a name="150" href="#150">150</a>             }
<a name="151" href="#151">151</a>         }
<a name="152" href="#152">152</a>         <strong>catch</strong> (OutOfMemoryError ex) { }
<a name="153" href="#153">153</a> 
<a name="154" href="#154">154</a>         <strong>try</strong> {
<a name="155" href="#155">155</a>             obj = pool.borrowObject();
<a name="156" href="#156">156</a>             fail(<span class="string">"Expected out of memory"</span>);
<a name="157" href="#157">157</a>         }
<a name="158" href="#158">158</a>         <strong>catch</strong> (OutOfMemoryError ex) { }
<a name="159" href="#159">159</a>     }
<a name="160" href="#160">160</a> 
<a name="161" href="#161">161</a> 
<a name="162" href="#162">162</a>     <strong>public</strong> <strong>static</strong> <strong>class</strong> SmallPoolableObjectFactory implements PoolableObjectFactory {
<a name="163" href="#163">163</a>         <strong>private</strong> <strong>int</strong> counter = 0;
<a name="164" href="#164">164</a>         
<a name="165" href="#165">165</a>         <strong>public</strong> Object makeObject() {
<a name="166" href="#166">166</a>             counter++;
<a name="167" href="#167">167</a>             <strong>return</strong> String.valueOf(counter);
<a name="168" href="#168">168</a>         }
<a name="169" href="#169">169</a>         <strong>public</strong> <strong>boolean</strong> validateObject(Object obj) {
<a name="170" href="#170">170</a>             <strong>return</strong> <strong>true</strong>;
<a name="171" href="#171">171</a>         }
<a name="172" href="#172">172</a>         <strong>public</strong> <strong>void</strong> activateObject(Object obj) { }
<a name="173" href="#173">173</a>         <strong>public</strong> <strong>void</strong> passivateObject(Object obj) { }
<a name="174" href="#174">174</a>         <strong>public</strong> <strong>void</strong> destroyObject(Object obj) { }
<a name="175" href="#175">175</a>     }
<a name="176" href="#176">176</a> 
<a name="177" href="#177">177</a>     <strong>public</strong> <strong>static</strong> <strong>class</strong> LargePoolableObjectFactory implements PoolableObjectFactory {
<a name="178" href="#178">178</a>         <strong>private</strong> String buffer;
<a name="179" href="#179">179</a>         <strong>private</strong> <strong>int</strong> counter = 0;
<a name="180" href="#180">180</a>         
<a name="181" href="#181">181</a>         <strong>public</strong> LargePoolableObjectFactory(<strong>int</strong> size) {
<a name="182" href="#182">182</a>             <strong>char</strong>[] data = <strong>new</strong> <strong>char</strong>[size];
<a name="183" href="#183">183</a>             Arrays.fill(data, '.');
<a name="184" href="#184">184</a>             buffer = <strong>new</strong> String(data);
<a name="185" href="#185">185</a>         }
<a name="186" href="#186">186</a>         
<a name="187" href="#187">187</a>         <strong>public</strong> Object makeObject() {
<a name="188" href="#188">188</a>             counter++;
<a name="189" href="#189">189</a>             <strong>return</strong> String.valueOf(counter) + buffer;
<a name="190" href="#190">190</a>         }
<a name="191" href="#191">191</a>         <strong>public</strong> <strong>boolean</strong> validateObject(Object obj) {
<a name="192" href="#192">192</a>             <strong>return</strong> <strong>true</strong>;
<a name="193" href="#193">193</a>         }
<a name="194" href="#194">194</a>         <strong>public</strong> <strong>void</strong> activateObject(Object obj) { }
<a name="195" href="#195">195</a>         <strong>public</strong> <strong>void</strong> passivateObject(Object obj) { }
<a name="196" href="#196">196</a>         <strong>public</strong> <strong>void</strong> destroyObject(Object obj) { }
<a name="197" href="#197">197</a>     }
<a name="198" href="#198">198</a> }
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