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| <h2 title="Class CodeCompiler" class="title">Class CodeCompiler</h2> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.drill.exec.compile.CodeCompiler</li> |
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| <pre>public class <span class="typeNameLabel">CodeCompiler</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Global code compiler mechanism shared by all threads and operators. |
| Holds a single cache of generated code (keyed by code source) to |
| prevent compiling identical code multiple times. Supports both |
| the byte-code merging and plain-old Java methods of code |
| generation and compilation.</div> |
| </li> |
| </ul> |
| </div> |
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| <h3>Nested Class Summary</h3> |
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| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.CodeGenCompiler.html" title="class in org.apache.drill.exec.compile">CodeCompiler.CodeGenCompiler</a></span></code> |
| <div class="block">Abstracts out the details of compiling code using the two available |
| mechanisms.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#COMPILE_BASE">COMPILE_BASE</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#DISABLE_CACHE_CONFIG">DISABLE_CACHE_CONFIG</a></span></code> |
| <div class="block">Disables the code cache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#ENABLE_SAVE_CODE_FOR_DEBUG_TOPN">ENABLE_SAVE_CODE_FOR_DEBUG_TOPN</a></span></code> |
| <div class="block">Enables saving generated code for debugging</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#MAX_LOADING_CACHE_SIZE_CONFIG">MAX_LOADING_CACHE_SIZE_CONFIG</a></span></code> |
| <div class="block">Maximum size of the compiled class cache.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#PREFER_POJ_CONFIG">PREFER_POJ_CONFIG</a></span></code> |
| <div class="block">Prefer to generate code as plain Java when the code generator |
| supports that mechanism.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#CodeCompiler-org.apache.drill.common.config.DrillConfig-org.apache.drill.exec.server.options.OptionSet-">CodeCompiler</a></span>(<a href="../../../../../org/apache/drill/common/config/DrillConfig.html" title="class in org.apache.drill.common.config">DrillConfig</a> config, |
| <a href="../../../../../org/apache/drill/exec/server/options/OptionSet.html" title="interface in org.apache.drill.exec.server.options">OptionSet</a> optionManager)</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#close--">close</a></span>()</code> |
| <div class="block">Upon close, report the effectiveness of the code cache to the log.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><T> T</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#createInstance-org.apache.drill.exec.expr.CodeGenerator-">createInstance</a></span>(<a href="../../../../../org/apache/drill/exec/expr/CodeGenerator.html" title="class in org.apache.drill.exec.expr">CodeGenerator</a><?> cg)</code> |
| <div class="block">Create a single instance of the generated class.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><T> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#createInstances-org.apache.drill.exec.expr.CodeGenerator-int-">createInstances</a></span>(<a href="../../../../../org/apache/drill/exec/expr/CodeGenerator.html" title="class in org.apache.drill.exec.expr">CodeGenerator</a><?> cg, |
| int count)</code> |
| <div class="block">Create multiple instances of the generated class.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/compile/CodeCompiler.html#flushCache--">flushCache</a></span>()</code> |
| <div class="block">Flush the compiled classes from the cache.</div> |
| </td> |
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| <h3>Methods inherited from class java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <h3>Field Detail</h3> |
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| <h4>COMPILE_BASE</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> COMPILE_BASE</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.compile.CodeCompiler.COMPILE_BASE">Constant Field Values</a></dd> |
| </dl> |
| </li> |
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| <h4>MAX_LOADING_CACHE_SIZE_CONFIG</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> MAX_LOADING_CACHE_SIZE_CONFIG</pre> |
| <div class="block">Maximum size of the compiled class cache.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.compile.CodeCompiler.MAX_LOADING_CACHE_SIZE_CONFIG">Constant Field Values</a></dd> |
| </dl> |
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| <h4>DISABLE_CACHE_CONFIG</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> DISABLE_CACHE_CONFIG</pre> |
| <div class="block">Disables the code cache. Primarily for testing.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.compile.CodeCompiler.DISABLE_CACHE_CONFIG">Constant Field Values</a></dd> |
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| <h4>ENABLE_SAVE_CODE_FOR_DEBUG_TOPN</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> ENABLE_SAVE_CODE_FOR_DEBUG_TOPN</pre> |
| <div class="block">Enables saving generated code for debugging</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.compile.CodeCompiler.ENABLE_SAVE_CODE_FOR_DEBUG_TOPN">Constant Field Values</a></dd> |
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| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> PREFER_POJ_CONFIG</pre> |
| <div class="block">Prefer to generate code as plain Java when the code generator |
| supports that mechanism.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../constant-values.html#org.apache.drill.exec.compile.CodeCompiler.PREFER_POJ_CONFIG">Constant Field Values</a></dd> |
| </dl> |
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| </li> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="CodeCompiler-org.apache.drill.common.config.DrillConfig-org.apache.drill.exec.server.options.OptionSet-"> |
| <!-- --> |
| </a> |
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| <h4>CodeCompiler</h4> |
| <pre>public CodeCompiler(<a href="../../../../../org/apache/drill/common/config/DrillConfig.html" title="class in org.apache.drill.common.config">DrillConfig</a> config, |
| <a href="../../../../../org/apache/drill/exec/server/options/OptionSet.html" title="interface in org.apache.drill.exec.server.options">OptionSet</a> optionManager)</pre> |
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| <h3>Method Detail</h3> |
| <a name="createInstance-org.apache.drill.exec.expr.CodeGenerator-"> |
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| <h4>createInstance</h4> |
| <pre>public <T> T createInstance(<a href="../../../../../org/apache/drill/exec/expr/CodeGenerator.html" title="class in org.apache.drill.exec.expr">CodeGenerator</a><?> cg) |
| throws <a href="../../../../../org/apache/drill/exec/exception/ClassTransformationException.html" title="class in org.apache.drill.exec.exception">ClassTransformationException</a></pre> |
| <div class="block">Create a single instance of the generated class.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>cg</code> - code generator for the class to be instantiated.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an instance of the generated class</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/drill/exec/exception/ClassTransformationException.html" title="class in org.apache.drill.exec.exception">ClassTransformationException</a></code> - general "something is wrong" exception |
| for the Drill compilation chain.</dd> |
| </dl> |
| </li> |
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| <a name="createInstances-org.apache.drill.exec.expr.CodeGenerator-int-"> |
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| <h4>createInstances</h4> |
| <pre>public <T> <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><T> createInstances(<a href="../../../../../org/apache/drill/exec/expr/CodeGenerator.html" title="class in org.apache.drill.exec.expr">CodeGenerator</a><?> cg, |
| int count) |
| throws <a href="../../../../../org/apache/drill/exec/exception/ClassTransformationException.html" title="class in org.apache.drill.exec.exception">ClassTransformationException</a></pre> |
| <div class="block">Create multiple instances of the generated class.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>cg</code> - code generator for the class to be instantiated.</dd> |
| <dd><code>count</code> - the number of instances desired.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a list of instances of the generated class.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/drill/exec/exception/ClassTransformationException.html" title="class in org.apache.drill.exec.exception">ClassTransformationException</a></code> - general "something is wrong" exception |
| for the Drill compilation chain.</dd> |
| </dl> |
| </li> |
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| <a name="flushCache--"> |
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| <h4>flushCache</h4> |
| <pre>public void flushCache()</pre> |
| <div class="block">Flush the compiled classes from the cache. |
| |
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