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property="datePublished" content="2025-03-04T10:43:37.000Z"></span><!----><span class="page-reading-time-info" aria-label="Reading Time⌛" data-balloon-pos="up"><svg xmlns="http://www.w3.org/2000/svg" class="icon timer-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="timer icon" name="timer"><path d="M799.387 122.15c4.402-2.978 7.38-7.897 7.38-13.463v-1.165c0-8.933-7.38-16.312-16.312-16.312H256.33c-8.933 0-16.311 7.38-16.311 16.312v1.165c0 5.825 2.977 10.874 7.637 13.592 4.143 194.44 97.22 354.963 220.201 392.763-122.204 37.542-214.893 196.511-220.2 389.397-4.661 5.049-7.638 11.651-7.638 19.03v5.825h566.49v-5.825c0-7.379-2.849-13.981-7.509-18.9-5.049-193.016-97.867-351.985-220.2-389.527 123.24-37.67 216.446-198.453 220.588-392.892zM531.16 450.445v352.632c117.674 1.553 211.787 40.778 211.787 88.676H304.097c0-48.286 95.149-87.382 213.728-88.676V450.445c-93.077-3.107-167.901-81.297-167.901-177.093 0-8.803 6.99-15.793 15.793-15.793 8.803 0 15.794 6.99 15.794 15.793 0 80.261 63.69 145.635 142.01 145.635s142.011-65.374 142.011-145.635c0-8.803 6.99-15.793 15.794-15.793s15.793 6.99 15.793 15.793c0 95.019-73.789 172.82-165.96 177.093z"></path></svg><span>About 3 min</span><meta property="timeRequired" content="PT3M"></span><!----><!----></div><hr></div><div class="vp-toc-placeholder"><aside id="toc" vp-toc><!----><!--[--><div class="vp-toc-header">On This Page<button type="button" class="print-button" title="Print"><svg xmlns="http://www.w3.org/2000/svg" class="icon print-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="print icon" name="print"><path d="M819.2 364.8h-44.8V128c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v236.8h-44.8C145.067 364.8 96 413.867 96 473.6v192c0 59.733 49.067 108.8 108.8 108.8h44.8V896c0 17.067 14.933 32 32 32h460.8c17.067 0 32-14.933 32-32V774.4h44.8c59.733 0 108.8-49.067 108.8-108.8v-192c0-59.733-49.067-108.8-108.8-108.8zM313.6 160h396.8v204.8H313.6V160zm396.8 704H313.6V620.8h396.8V864zM864 665.6c0 25.6-19.2 44.8-44.8 44.8h-44.8V588.8c0-17.067-14.933-32-32-32H281.6c-17.067 0-32 14.933-32 32v121.6h-44.8c-25.6 0-44.8-19.2-44.8-44.8v-192c0-25.6 19.2-44.8 44.8-44.8h614.4c25.6 0 44.8 19.2 44.8 44.8v192z"></path></svg></button><div class="arrow end"></div></div><div class="vp-toc-wrapper"><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#write-interface">Write Interface</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#itsfilewriter">ITsFileWriter</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#tsfilewriterbuilder">TsFileWriterBuilder</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#tableschema">TableSchema</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#tablet">Tablet</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#read-interface">Read Interface</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#itsfilereader">ITsFileReader</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#tsfilereaderbuilder">TsFileReaderBuilder</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#resultset">ResultSet</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#resultsetmetadata">ResultSetMetadata</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--]--><!----></aside></div><!----><div class="theme-hope-content" vp-content><h1 id="interface-definitions" tabindex="-1"><a class="header-anchor" href="#interface-definitions"><span>Interface Definitions</span></a></h1><h2 id="write-interface" tabindex="-1"><a class="header-anchor" href="#write-interface"><span>Write Interface</span></a></h2><h3 id="itsfilewriter" tabindex="-1"><a class="header-anchor" href="#itsfilewriter"><span>ITsFileWriter</span></a></h3><p>Used to write data to tsfile</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">interface</span><span style="color:#E5C07B;"> ITsFileWriter</span><span style="color:#C678DD;"> extends</span><span style="color:#E5C07B;"> AutoCloseable</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Write data</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> write</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">Tablet</span><span style="color:#E06C75;font-style:italic;"> tablet</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Close Write</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> close</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="tsfilewriterbuilder" tabindex="-1"><a class="header-anchor" href="#tsfilewriterbuilder"><span>TsFileWriterBuilder</span></a></h3><p>Used to construct ITsFileWriter</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> TsFileWriterBuilder</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Build ITsFileWriter object</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ITsFileWriter</span><span style="color:#61AFEF;"> build</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // target file</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> TsFileWriterBuilder</span><span style="color:#61AFEF;"> file</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">File</span><span style="color:#E06C75;font-style:italic;"> file</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Used to construct table structures</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> TsFileWriterBuilder</span><span style="color:#61AFEF;"> tableSchema</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">TableSchema</span><span style="color:#E06C75;font-style:italic;"> schema</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Used to limit the memory size of objects</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> TsFileWriterBuilder</span><span style="color:#61AFEF;"> memoryThreshold</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> memoryThreshold</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="tableschema" tabindex="-1"><a class="header-anchor" href="#tableschema"><span>TableSchema</span></a></h3><p>Describe the data structure of the table schema</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> TableSchema</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Constructor function</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#61AFEF;"> TableSchema</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> tableName</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">ColumnSchema</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">columnSchemaList</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> ColumnSchema</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Constructor function</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#61AFEF;"> ColumnSchema</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">TSDataType</span><span style="color:#E06C75;font-style:italic;"> dataType</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">ColumnCategory</span><span style="color:#E06C75;font-style:italic;"> columnCategory</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Get column names</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> String</span><span style="color:#61AFEF;"> getColumnName</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Get the data type of the column</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> TSDataType</span><span style="color:#61AFEF;"> getDataType</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Get column category</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> Tablet</span><span style="color:#ABB2BF;">.</span><span style="color:#E5C07B;">ColumnCategory</span><span style="color:#61AFEF;"> getColumnCategory</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span> |
| <span class="line"></span> |
| <span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> ColumnSchemaBuilder</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Build ColumnSchema object</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ColumnSchema</span><span style="color:#61AFEF;"> build</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Column Name</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ColumnSchemaBuilder</span><span style="color:#61AFEF;"> name</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // The data type of the column</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ColumnSchemaBuilder</span><span style="color:#61AFEF;"> dataType</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#E06C75;font-style:italic;"> columnType</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Column category</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ColumnSchemaBuilder</span><span style="color:#61AFEF;"> category</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">ColumnCategory</span><span style="color:#E06C75;font-style:italic;"> columnCategory</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Supported types</span></span> |
| <span class="line"><span style="color:#C678DD;"> enum</span><span style="color:#E5C07B;"> TSDataType</span><span style="color:#E06C75;"> { </span></span> |
| <span class="line"><span style="color:#D19A66;"> BOOLEAN</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> INT32</span><span style="color:#ABB2BF;">,</span></span> |
| <span class="line"><span style="color:#D19A66;"> INT64</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> FLOAT</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> DOUBLE</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> TIMESTAMP</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> TEXT</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> DATE</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> BLOB</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> STRING</span><span style="color:#ABB2BF;">;</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> }</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Supported column categories</span></span> |
| <span class="line"><span style="color:#C678DD;"> enum</span><span style="color:#E5C07B;"> ColumnCategory</span><span style="color:#E06C75;"> { </span></span> |
| <span class="line"><span style="color:#D19A66;"> TAG</span><span style="color:#ABB2BF;">,</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#D19A66;"> FIELD</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> }</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="tablet" tabindex="-1"><a class="header-anchor" href="#tablet"><span>Tablet</span></a></h3><p>Write column memory structure</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> Tablet</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Constructor function</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#61AFEF;"> Tablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">columnNameList</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">dataTypeList</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#61AFEF;"> Tablet</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">columnNameList</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">TSDataType</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">dataTypeList</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> maxRowNum</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Interface for adding timestamps</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addTimestamp</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> timestamp</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Interface for adding values</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Add values based on column names</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">float</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">double</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">boolean</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">byte</span><span style="color:#ABB2BF;">[] </span><span style="color:#E06C75;font-style:italic;">val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">LocalDate</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Add values based on index position</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">float</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">double</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">boolean</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">byte</span><span style="color:#ABB2BF;">[] </span><span style="color:#E06C75;font-style:italic;">val</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> addValue</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> rowIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">LocalDate</span><span style="color:#E06C75;font-style:italic;"> val</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h2 id="read-interface" tabindex="-1"><a class="header-anchor" href="#read-interface"><span>Read Interface</span></a></h2><h3 id="itsfilereader" tabindex="-1"><a class="header-anchor" href="#itsfilereader"><span>ITsFileReader</span></a></h3><p>Used to query data in tsfile</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">interface</span><span style="color:#E5C07B;"> ITsFileReader</span><span style="color:#C678DD;"> extends</span><span style="color:#E5C07B;"> AutoCloseable</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Used to execute queries and return results</span></span> |
| <span class="line"><span style="color:#E5C07B;"> ResultSet</span><span style="color:#61AFEF;"> query</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> tableName</span><span style="color:#ABB2BF;">, </span><span style="color:#E5C07B;">List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">String</span><span style="color:#ABB2BF;">> </span><span style="color:#E06C75;font-style:italic;">columnNames</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> startTime</span><span style="color:#ABB2BF;">, </span><span style="color:#C678DD;">long</span><span style="color:#E06C75;font-style:italic;"> endTime</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Return the schema of the table named tableName in tsfile</span></span> |
| <span class="line"><span style="color:#E5C07B;"> Optional</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">TableSchema</span><span style="color:#ABB2BF;">></span><span style="color:#61AFEF;"> getTableSchemas</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> tableName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Retrieve schema information for all tables in the tsfile</span></span> |
| <span class="line"><span style="color:#E5C07B;"> List</span><span style="color:#ABB2BF;"><</span><span style="color:#E5C07B;">TableSchema</span><span style="color:#ABB2BF;">></span><span style="color:#61AFEF;"> getAllTableSchema</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Close query</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> close</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="tsfilereaderbuilder" tabindex="-1"><a class="header-anchor" href="#tsfilereaderbuilder"><span>TsFileReaderBuilder</span></a></h3><p>Used to construct ITsFileReader</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">class</span><span style="color:#E5C07B;"> TsFileReaderBuilder</span><span style="color:#ABB2BF;"> {</span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Build ITsFileReader object</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> ITsFileReader</span><span style="color:#61AFEF;"> build</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // target file</span></span> |
| <span class="line"><span style="color:#C678DD;"> public</span><span style="color:#E5C07B;"> TsFileReaderBuilder</span><span style="color:#61AFEF;"> file</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">File</span><span style="color:#E06C75;font-style:italic;"> file</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="resultset" tabindex="-1"><a class="header-anchor" href="#resultset"><span>ResultSet</span></a></h3><p>The result set of the query</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">interface</span><span style="color:#E5C07B;"> ResultSet</span><span style="color:#C678DD;"> extends</span><span style="color:#E5C07B;"> AutoCloseable</span><span style="color:#ABB2BF;"> {</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Move the cursor to the next row and return whether there is still data</span></span> |
| <span class="line"><span style="color:#C678DD;"> boolean</span><span style="color:#61AFEF;"> next</span><span style="color:#ABB2BF;">();</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Get the value of the current row and a certain column</span></span> |
| <span class="line"><span style="color:#C678DD;"> int</span><span style="color:#61AFEF;"> getInt</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> int</span><span style="color:#61AFEF;"> getInt</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> long</span><span style="color:#61AFEF;"> getLong</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> long</span><span style="color:#61AFEF;"> getLong</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> float</span><span style="color:#61AFEF;"> getFloat</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> float</span><span style="color:#61AFEF;"> getFloat</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> double</span><span style="color:#61AFEF;"> getDouble</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> double</span><span style="color:#61AFEF;"> getDouble</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> boolean</span><span style="color:#61AFEF;"> getBoolean</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> boolean</span><span style="color:#61AFEF;"> getBoolean</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> String</span><span style="color:#61AFEF;"> getString</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> String</span><span style="color:#61AFEF;"> getString</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> LocalDate</span><span style="color:#61AFEF;"> getDate</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E5C07B;"> LocalDate</span><span style="color:#61AFEF;"> getDate</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> byte</span><span style="color:#61AFEF;">[] getBinary</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#C678DD;"> byte</span><span style="color:#61AFEF;">[] getBinary</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Determine whether a column is NULL in the current row</span></span> |
| <span class="line"><span style="color:#C678DD;"> boolean</span><span style="color:#61AFEF;"> isNull</span><span style="color:#ABB2BF;">(</span><span style="color:#E5C07B;">String</span><span style="color:#E06C75;font-style:italic;"> columnName</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#C678DD;"> boolean</span><span style="color:#61AFEF;"> isNull</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Close the current result set</span></span> |
| <span class="line"><span style="color:#C678DD;"> void</span><span style="color:#61AFEF;"> close</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Obtain the header of the result set</span></span> |
| <span class="line"><span style="color:#E5C07B;"> ResultSetMetadata</span><span style="color:#61AFEF;"> getMetadata</span><span style="color:#ABB2BF;">();</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="resultsetmetadata" tabindex="-1"><a class="header-anchor" href="#resultsetmetadata"><span>ResultSetMetadata</span></a></h3><p>Used to obtain metadata for the result set</p><div class="language-java line-numbers-mode" data-highlighter="shiki" data-ext="java" data-title="java" style="background-color:#282c34;color:#abb2bf;"><pre class="shiki one-dark-pro vp-code"><code><span class="line"><span style="color:#C678DD;">interface</span><span style="color:#E5C07B;"> ResultSetMetadata</span><span style="color:#ABB2BF;"> {</span><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Obtain the column name of the Nth column in the result set</span></span> |
| <span class="line"><span style="color:#E5C07B;"> String</span><span style="color:#61AFEF;"> getColumnName</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#E06C75;"> </span></span> |
| <span class="line"><span style="color:#7F848E;font-style:italic;"> // Obtain the data type of the Nth column in the result set</span></span> |
| <span class="line"><span style="color:#E5C07B;"> TSDataType</span><span style="color:#61AFEF;"> getColumnType</span><span style="color:#ABB2BF;">(</span><span style="color:#C678DD;">int</span><span style="color:#E06C75;font-style:italic;"> columnIndex</span><span style="color:#ABB2BF;">);</span></span> |
| <span class="line"><span style="color:#ABB2BF;">}</span></span></code></pre><div class="line-numbers" aria-hidden="true" style="counter-reset:line-number 0;"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div></div><!----><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a class="auto-link external-link vp-meta-label" href="https://github.com/apache/tsfile/edit/docs/dev/src/UserGuide/develop/QuickStart/InterfaceDefinition/InterfaceDefinition-Java.md" aria-label="Found Error? Edit this page on GitHub" rel="noopener noreferrer" target="_blank" iconsizing="both"><!--[--><svg xmlns="http://www.w3.org/2000/svg" class="icon edit-icon" viewBox="0 0 1024 1024" fill="currentColor" aria-label="edit icon" name="edit"><path d="M430.818 653.65a60.46 60.46 0 0 1-50.96-93.281l71.69-114.012 7.773-10.365L816.038 80.138A60.46 60.46 0 0 1 859.225 62a60.46 60.46 0 0 1 43.186 18.138l43.186 43.186a60.46 60.46 0 0 1 0 86.373L588.879 565.55l-8.637 8.637-117.466 68.234a60.46 60.46 0 0 1-31.958 11.229z"></path><path d="M728.802 962H252.891A190.883 190.883 0 0 1 62.008 771.98V296.934a190.883 190.883 0 0 1 190.883-192.61h267.754a60.46 60.46 0 0 1 0 120.92H252.891a69.962 69.962 0 0 0-69.098 69.099V771.98a69.962 69.962 0 0 0 69.098 69.098h475.911A69.962 69.962 0 0 0 797.9 771.98V503.363a60.46 60.46 0 1 1 120.922 0V771.98A190.883 190.883 0 0 1 728.802 962z"></path></svg><!--]-->Found Error? Edit this page on GitHub<!----></a></div><div class="vp-meta-item git-info"><div class="update-time"><span class="vp-meta-label">Last update: </span><span class="vp-meta-info" data-allow-mismatch="text">3/4/2025, 10:43:37 AM</span></div><!----></div></footer><!----><!----><!----><!--]--></main><!--]--><footer style="padding-bottom:1rem;padding-top:1rem;"><span id="doc-version" style="display:none;">latest</span><p style="text-align:center;color:#909399;font-size:12px;margin:0 30px;">Copyright © 2025 The Apache Software Foundation.<br> Apache and the Apache feather logo are trademarks of The Apache Software Foundation</p><p style="text-align:center;margin-top:10px;color:#909399;font-size:12px;margin:0 30px;"><strong>Have a question?</strong> Connect with us on issues. </p></footer></div><!--]--><!--]--><!--[--><!----><!--[--><!--]--><!--]--><!--]--></div> |
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