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<div class="subTitle">org.apache.calcite.util</div>
<h2 title="类 ConversionUtil" class="title">类 ConversionUtil</h2>
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<pre>public class <span class="typeNameLabel">ConversionUtil</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></pre>
<div class="block">Utility functions for converting from one type to another</div>
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<h3>字段概要</h3>
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<caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">字段和说明</th>
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<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="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#NATIVE_UTF16_CHARSET_NAME">NATIVE_UTF16_CHARSET_NAME</a></span></code>&nbsp;</td>
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<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="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#TEST_UNICODE_SQL_ESCAPED_LITERAL">TEST_UNICODE_SQL_ESCAPED_LITERAL</a></span></code>
<div class="block">A constant string which can be used wherever a SQL literal containing
Unicode escape characters is needed in a test.</div>
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<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="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#TEST_UNICODE_STRING">TEST_UNICODE_STRING</a></span></code>
<div class="block">A constant string which can be used wherever a Java string containing
Unicode characters is needed in a test.</div>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#toBoolean-java.lang.String-">toBoolean</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;str)</code>
<div class="block">Converts a string into a boolean</div>
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<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#toByteArrayFromString-java.lang.String-int-">toByteArrayFromString</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;value,
int&nbsp;radix)</code>
<div class="block">Converts a string into a byte array.</div>
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<tr id="i2" 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="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#toStringFromApprox-double-boolean-">toStringFromApprox</a></span>(double&nbsp;d,
boolean&nbsp;isFloat)</code>
<div class="block">Converts an approximate value into a string, following the SQL 2003
standard.</div>
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<tr id="i3" 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="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/util/ConversionUtil.html#toStringFromByteArray-byte:A-int-">toStringFromByteArray</a></span>(byte[]&nbsp;value,
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<div class="block">Converts a byte array into a bit string or a hex string.</div>
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<pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> NATIVE_UTF16_CHARSET_NAME</pre>
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<pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> TEST_UNICODE_STRING</pre>
<div class="block">A constant string which can be used wherever a Java string containing
Unicode characters is needed in a test. It spells 'anthropos' in Greek.</div>
<dl>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.calcite.util.ConversionUtil.TEST_UNICODE_STRING">常量字段值</a></dd>
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<pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> TEST_UNICODE_SQL_ESCAPED_LITERAL</pre>
<div class="block">A constant string which can be used wherever a SQL literal containing
Unicode escape characters is needed in a test. It spells 'anthropos' in
Greek. The escape character is the SQL default (backslash); note that the
backslash-doubling here is for Java only, so by the time the SQL parser
gets it, there is only one backslash.</div>
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<dd><a href="../../../../constant-values.html#org.apache.calcite.util.ConversionUtil.TEST_UNICODE_SQL_ESCAPED_LITERAL">常量字段值</a></dd>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;toStringFromByteArray(byte[]&nbsp;value,
int&nbsp;radix)</pre>
<div class="block">Converts a byte array into a bit string or a hex string.
<p>For example, <code>toStringFromByteArray(new byte[] {0xAB, 0xCD},
16)</code> returns <code>ABCD</code>.</div>
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<pre>public static&nbsp;byte[]&nbsp;toByteArrayFromString(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;value,
int&nbsp;radix)</pre>
<div class="block">Converts a string into a byte array. The inverse of
<a href="../../../../org/apache/calcite/util/ConversionUtil.html#toStringFromByteArray-byte:A-int-"><code>toStringFromByteArray(byte[], int)</code></a>.</div>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;toStringFromApprox(double&nbsp;d,
boolean&nbsp;isFloat)</pre>
<div class="block">Converts an approximate value into a string, following the SQL 2003
standard.</div>
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<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="java.lang中的类或接口">Boolean</a>&nbsp;toBoolean(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;str)</pre>
<div class="block">Converts a string into a boolean</div>
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