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| <li class="navelem"><b>kudu</b></li><li class="navelem"><b>client</b></li><li class="navelem"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a></li> </ul> |
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| |
| <p>Builder API for specifying or altering a column within a table schema. |
| <a href="classkudu_1_1client_1_1KuduColumnSpec.html#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="schema_8h_source.html">schema.h</a>></code></p> |
| <table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a> |
| Public Member Functions</h2></td></tr> |
| <tr class="memitem:a92c63c0e1872c03fcabeac19d802f6c7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#a92c63c0e1872c03fcabeac19d802f6c7">Default</a> (<a class="el" href="classkudu_1_1client_1_1KuduValue.html">KuduValue</a> *value)</td></tr> |
| <tr class="separator:a92c63c0e1872c03fcabeac19d802f6c7"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ad9ed2e008ee926ee50c23e664d854e8b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#ad9ed2e008ee926ee50c23e664d854e8b">Compression</a> (<a class="el" href="classkudu_1_1client_1_1KuduColumnStorageAttributes.html#af579406931a40daa5cb9e10603341a78">KuduColumnStorageAttributes::CompressionType</a> compression)</td></tr> |
| <tr class="separator:ad9ed2e008ee926ee50c23e664d854e8b"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ae0ceeb41ac1427c2472a2f28778b6e97"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#ae0ceeb41ac1427c2472a2f28778b6e97">Encoding</a> (<a class="el" href="classkudu_1_1client_1_1KuduColumnStorageAttributes.html#aeb835a12e6f40b1a619afa8abd773b6d">KuduColumnStorageAttributes::EncodingType</a> encoding)</td></tr> |
| <tr class="separator:ae0ceeb41ac1427c2472a2f28778b6e97"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a8502dd68c6743c7c66b2b6a02d41a4e6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#a8502dd68c6743c7c66b2b6a02d41a4e6">BlockSize</a> (int32_t block_size)</td></tr> |
| <tr class="separator:a8502dd68c6743c7c66b2b6a02d41a4e6"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr><td colspan="2"><div class="groupHeader">Operations only relevant for Create Table</div></td></tr> |
| <tr><td colspan="2"><div class="groupText"><p>Set the column to be the primary key of the table.</p> |
| <p>This may only be used to set non-composite primary keys. If a composite key is desired, use <a class="el" href="classkudu_1_1client_1_1KuduSchemaBuilder.html#ad4c1619445fea575a775f23752b6bfb9">KuduSchemaBuilder::SetPrimaryKey()</a>. This may not be used in conjunction with <a class="el" href="classkudu_1_1client_1_1KuduSchemaBuilder.html#ad4c1619445fea575a775f23752b6bfb9">KuduSchemaBuilder::SetPrimaryKey()</a>.</p> |
| <dl class="section note"><dt>Note</dt><dd>Primary keys may not be changed after a table is created.</dd></dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| </div></td></tr> |
| <tr class="memitem:a48a1457d2f4379a59c29280907c7f3c2"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a48a1457d2f4379a59c29280907c7f3c2"></a> |
| <a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><b>PrimaryKey</b> ()</td></tr> |
| <tr class="separator:a48a1457d2f4379a59c29280907c7f3c2"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:af8c64c5a8a7a93ec644d481f23d91cca"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#af8c64c5a8a7a93ec644d481f23d91cca">NotNull</a> ()</td></tr> |
| <tr class="separator:af8c64c5a8a7a93ec644d481f23d91cca"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:aab05d7d45f4cd2dadb8e0c715d87e841"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#aab05d7d45f4cd2dadb8e0c715d87e841">Nullable</a> ()</td></tr> |
| <tr class="separator:aab05d7d45f4cd2dadb8e0c715d87e841"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a67e794a08387e17ba430d6942419a2c2"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#a67e794a08387e17ba430d6942419a2c2">Type</a> (<a class="el" href="classkudu_1_1client_1_1KuduColumnSchema.html#aba69238e70af5c887a4fb11fa2a120c5">KuduColumnSchema::DataType</a> type)</td></tr> |
| <tr class="separator:a67e794a08387e17ba430d6942419a2c2"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr><td colspan="2"><div class="groupHeader">Operations only relevant for Alter Table</div></td></tr> |
| <tr><td colspan="2"><div class="groupText"><p>Remove the default value for the column.</p> |
| <p>Without a default, clients must always specify a value for the column when inserting data.</p> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| </div></td></tr> |
| <tr class="memitem:ade0ba64b4ff59889755800b817419b82"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ade0ba64b4ff59889755800b817419b82"></a> |
| <a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><b>RemoveDefault</b> ()</td></tr> |
| <tr class="separator:ade0ba64b4ff59889755800b817419b82"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:abeb2cbbaa01253165202574db03872f4"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html#abeb2cbbaa01253165202574db03872f4">RenameTo</a> (const std::string &new_name)</td></tr> |
| <tr class="separator:abeb2cbbaa01253165202574db03872f4"><td class="memSeparator" colspan="2"> </td></tr> |
| </table><table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="friends"></a> |
| Friends</h2></td></tr> |
| <tr class="memitem:ab04cec7242eaf6df17c2923f939df780"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab04cec7242eaf6df17c2923f939df780"></a> |
| class </td><td class="memItemRight" valign="bottom"><b>KuduSchemaBuilder</b></td></tr> |
| <tr class="separator:ab04cec7242eaf6df17c2923f939df780"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a3460d221abb050e895feac294530a58f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3460d221abb050e895feac294530a58f"></a> |
| class </td><td class="memItemRight" valign="bottom"><b>KuduTableAlterer</b></td></tr> |
| <tr class="separator:a3460d221abb050e895feac294530a58f"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>Builder API for specifying or altering a column within a table schema. </p> |
| <p>An object of this type cannot be constructed directly, but rather is returned from <a class="el" href="classkudu_1_1client_1_1KuduSchemaBuilder.html#a0fdf28d49cc05ba4f3182f7398ddf600">KuduSchemaBuilder::AddColumn()</a> to specify a column within a Schema.</p> |
| <dl class="todo"><dt><b><a class="el" href="todo.html#_todo000009">Todo:</a></b></dt><dd>KUDU-861: this API will also be used for an improved AlterTable API. </dd></dl> |
| </div><h2 class="groupheader">Member Function Documentation</h2> |
| <a class="anchor" id="a8502dd68c6743c7c66b2b6a02d41a4e6"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::BlockSize </td> |
| <td>(</td> |
| <td class="paramtype">int32_t </td> |
| <td class="paramname"><em>block_size</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the target block size for the column.</p> |
| <p>This is the number of bytes of user data packed per block on disk, and represents the unit of IO when reading the column. Larger values may improve scan performance, particularly on spinning media. Smaller values may improve random access performance, particularly for workloads that have high cache hit rates or operate on fast storage such as SSD.</p> |
| <dl class="section note"><dt>Note</dt><dd>The block size specified here corresponds to uncompressed data. The actual size of the unit read from disk may be smaller if compression is enabled.</dd> |
| <dd> |
| It's recommended that this not be set any lower than 4096 (4KB) or higher than 1048576 (1MB). </dd></dl> |
| <dl class="todo"><dt><b><a class="el" href="todo.html#_todo000013">Todo:</a></b></dt><dd>KUDU-1107: move above info to docs</dd></dl> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">block_size</td><td>Block size (in bytes) to use. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="ad9ed2e008ee926ee50c23e664d854e8b"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::Compression </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="classkudu_1_1client_1_1KuduColumnStorageAttributes.html#af579406931a40daa5cb9e10603341a78">KuduColumnStorageAttributes::CompressionType</a> </td> |
| <td class="paramname"><em>compression</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the preferred compression type for the column.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">compression</td><td>The compression type to use. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a92c63c0e1872c03fcabeac19d802f6c7"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::Default </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="classkudu_1_1client_1_1KuduValue.html">KuduValue</a> * </td> |
| <td class="paramname"><em>value</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the default value for the column.</p> |
| <p>When adding a new column to a table, this default value will be used to fill the new column in all existing rows. The default value will also be used when inserting a new row with no value for the column.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">value</td><td>The value to use as the default. The <a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html" title="Builder API for specifying or altering a column within a table schema. ">KuduColumnSpec</a> takes ownership over the passed parameter.</td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="ae0ceeb41ac1427c2472a2f28778b6e97"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::Encoding </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="classkudu_1_1client_1_1KuduColumnStorageAttributes.html#aeb835a12e6f40b1a619afa8abd773b6d">KuduColumnStorageAttributes::EncodingType</a> </td> |
| <td class="paramname"><em>encoding</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the preferred encoding for the column.</p> |
| <dl class="section note"><dt>Note</dt><dd>Not all encodings are supported for all column types.</dd></dl> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">encoding</td><td>The encoding to use. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="af8c64c5a8a7a93ec644d481f23d91cca"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::NotNull </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the column to be not nullable.</p> |
| <dl class="section note"><dt>Note</dt><dd>Column nullability may not be changed once a table is created.</dd></dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="aab05d7d45f4cd2dadb8e0c715d87e841"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::Nullable </td> |
| <td>(</td> |
| <td class="paramname"></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the column to be nullable (the default).</p> |
| <dl class="section note"><dt>Note</dt><dd>Column nullability may not be changed once a table is created.</dd></dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="abeb2cbbaa01253165202574db03872f4"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::RenameTo </td> |
| <td>(</td> |
| <td class="paramtype">const std::string & </td> |
| <td class="paramname"><em>new_name</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Rename the column.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">new_name</td><td>The new name for the column. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a67e794a08387e17ba430d6942419a2c2"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="classkudu_1_1client_1_1KuduColumnSpec.html">KuduColumnSpec</a>* kudu::client::KuduColumnSpec::Type </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="classkudu_1_1client_1_1KuduColumnSchema.html#aba69238e70af5c887a4fb11fa2a120c5">KuduColumnSchema::DataType</a> </td> |
| <td class="paramname"><em>type</em></td><td>)</td> |
| <td></td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Set the data type of the column.</p> |
| <dl class="section note"><dt>Note</dt><dd>Column data types may not be changed once a table is created.</dd></dl> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in]</td><td class="paramname">type</td><td>The data type to set. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="section return"><dt>Returns</dt><dd>Pointer to the modified object. </dd></dl> |
| |
| </div> |
| </div> |
| <hr/>The documentation for this class was generated from the following file:<ul> |
| <li>include/kudu/client/<a class="el" href="schema_8h_source.html">schema.h</a></li> |
| </ul> |
| </div><!-- contents --> |
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| <small>Generated for Kudu version 1.0.0 on Mon Sep 19 2016 19:01:02 by Doxygen 1.8.6</small> |
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