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| <div class="subTitle">org.apache.drill.exec.expr.fn.output</div> |
| <h2 title="Class ConcatReturnTypeInference" class="title">Class ConcatReturnTypeInference</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <ul class="inheritance"> |
| <li>org.apache.drill.exec.expr.fn.output.ConcatReturnTypeInference</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ReturnTypeInference.html" title="interface in org.apache.drill.exec.expr.fn.output">ReturnTypeInference</a></dd> |
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| <pre>public class <span class="typeNameLabel">ConcatReturnTypeInference</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> |
| implements <a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ReturnTypeInference.html" title="interface in org.apache.drill.exec.expr.fn.output">ReturnTypeInference</a></pre> |
| <div class="block">Return type calculation implementation for functions with return type set as |
| <a href="../../../../../../../org/apache/drill/exec/expr/annotations/FunctionTemplate.ReturnType.html#CONCAT"><code>FunctionTemplate.ReturnType.CONCAT</code></a>.</div> |
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| <td class="colFirst"><code>static <a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ConcatReturnTypeInference.html" title="class in org.apache.drill.exec.expr.fn.output">ConcatReturnTypeInference</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ConcatReturnTypeInference.html#INSTANCE">INSTANCE</a></span></code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ConcatReturnTypeInference.html#ConcatReturnTypeInference--">ConcatReturnTypeInference</a></span>()</code> </td> |
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| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ConcatReturnTypeInference.html#getType-java.util.List-org.apache.drill.exec.expr.fn.FunctionAttributes-">getType</a></span>(<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><<a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>> logicalExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/expr/fn/FunctionAttributes.html" title="class in org.apache.drill.exec.expr.fn">FunctionAttributes</a> attributes)</code> |
| <div class="block">Defines function return type and sets precision if it can be calculated.</div> |
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| <h4>INSTANCE</h4> |
| <pre>public static final <a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ConcatReturnTypeInference.html" title="class in org.apache.drill.exec.expr.fn.output">ConcatReturnTypeInference</a> INSTANCE</pre> |
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| <a name="ConcatReturnTypeInference--"> |
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| <h4>ConcatReturnTypeInference</h4> |
| <pre>public ConcatReturnTypeInference()</pre> |
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| <h4>getType</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/common/types/TypeProtos.MajorType.html" title="class in org.apache.drill.common.types">TypeProtos.MajorType</a> getType(<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><<a href="../../../../../../../org/apache/drill/common/expression/LogicalExpression.html" title="interface in org.apache.drill.common.expression">LogicalExpression</a>> logicalExpressions, |
| <a href="../../../../../../../org/apache/drill/exec/expr/fn/FunctionAttributes.html" title="class in org.apache.drill.exec.expr.fn">FunctionAttributes</a> attributes)</pre> |
| <div class="block">Defines function return type and sets precision if it can be calculated. |
| Return type precision is sum of input types precisions. |
| If at least one input type does not have precision, return type will be without precision. |
| If calculated precision is greater than <a href="../../../../../../../org/apache/drill/common/types/Types.html#MAX_VARCHAR_LENGTH"><code>Types.MAX_VARCHAR_LENGTH</code></a>, |
| it is replaced with <a href="../../../../../../../org/apache/drill/common/types/Types.html#MAX_VARCHAR_LENGTH"><code>Types.MAX_VARCHAR_LENGTH</code></a>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ReturnTypeInference.html#getType-java.util.List-org.apache.drill.exec.expr.fn.FunctionAttributes-">getType</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/expr/fn/output/ReturnTypeInference.html" title="interface in org.apache.drill.exec.expr.fn.output">ReturnTypeInference</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>logicalExpressions</code> - logical expressions</dd> |
| <dd><code>attributes</code> - function attributes</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>return type</dd> |
| </dl> |
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