<!DOCTYPE html><htmllang="en"><head><title>clients/server/postgres</title></head><metahttp-equiv="Content-Type"content="text/html; charset=utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0"><metaname="groc-relative-root"content="../../"><metaname="groc-document-path"content="clients/server/postgres"><metaname="groc-project-path"content="clients/server/postgres.js"><linkrel="stylesheet"type="text/css"media="all"href="../../assets/style.css"><scripttype="text/javascript"src="../../assets/behavior.js"></script><body><divid="meta"><divclass="file-path">clients/server/postgres.js</div></div><divid="document"><divclass="segment"><divclass="comments"><divclass="wrapper"><h2id="postgresql">PostgreSQL</h2></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>All of the "when.js" promise components needed in this module.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="kd">var</span><spanclass="nx">when</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'when'</span><spanclass="p">);</span>
<spanclass="kd">var</span><spanclass="nx">nodefn</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'when/node/function'</span><spanclass="p">);</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Other dependencies, including the <code>pg</code> library,
which needs to be added as a dependency to the project
using this database.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="kd">var</span><spanclass="nx">_</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'underscore'</span><spanclass="p">);</span>
<spanclass="kd">var</span><spanclass="nx">pg</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'pg'</span><spanclass="p">);</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>All other local project modules needed in this scope.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="kd">var</span><spanclass="nx">ServerBase</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'./base'</span><spanclass="p">).</span><spanclass="nx">ServerBase</span><spanclass="p">;</span>
<spanclass="kd">var</span><spanclass="nx">Helpers</span><spanclass="o">=</span><spanclass="nx">require</span><spanclass="p">(</span><spanclass="s1">'../../lib/helpers'</span><spanclass="p">).</span><spanclass="nx">Helpers</span><spanclass="p">;</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Constructor for the PostgreSQL Client</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">exports</span><spanclass="p">.</span><spanclass="nx">Client</span><spanclass="o">=</span><spanclass="nx">ServerBase</span><spanclass="p">.</span><spanclass="nx">extend</span><spanclass="p">({</span>
<spanclass="nx">dialect</span><spanclass="o">:</span><spanclass="s1">'postgresql'</span><spanclass="p">,</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Runs the query on the specified connection, providing the bindings
and any other necessary prep work.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">runQuery</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">connection</span><spanclass="p">,</span><spanclass="nx">sql</span><spanclass="p">,</span><spanclass="nx">bindings</span><spanclass="p">,</span><spanclass="nx">builder</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">if</span><spanclass="p">(</span><spanclass="o">!</span><spanclass="nx">connection</span><spanclass="p">)</span><spanclass="k">throw</span><spanclass="k">new</span><spanclass="nb">Error</span><spanclass="p">(</span><spanclass="s1">'No database connection exists for the query'</span><spanclass="p">);</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Get a raw connection, called by the <code>pool</code> whenever a new
connection needs to be added to the pool.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">getRawConnection</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">callback</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Used to explicitly close a connection, called internally by the pool
when a connection times out or the pool is shutdown.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">destroyRawConnection</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">connection</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>In PostgreSQL, we need to do a version check to do some feature
checking on the database.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">checkVersion</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">connection</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">});</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Extends the standard sql grammar.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="kd">var</span><spanclass="nx">grammar</span><spanclass="o">=</span><spanclass="nx">exports</span><spanclass="p">.</span><spanclass="nx">grammar</span><spanclass="o">=</span><spanclass="nx">_</span><spanclass="p">.</span><spanclass="nx">defaults</span><spanclass="p">({</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>The keyword identifier wrapper format.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">wrapValue</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">value</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compiles a truncate query.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileTruncate</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">qb</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compiles an <code>insert</code> query, allowing for multiple
inserts using a single query statement.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileInsert</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">qb</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="kd">var</span><spanclass="nx">paramBlocks</span><spanclass="o">=</span><spanclass="p">[];</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>If there are any "where" clauses, we need to omit
any bindings that may have been associated with them.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="k">if</span><spanclass="p">(</span><spanclass="nx">qb</span><spanclass="p">.</span><spanclass="nx">wheres</span><spanclass="p">.</span><spanclass="nx">length</span><spanclass="o">></span><spanclass="mi">0</span><spanclass="p">)</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">clearWhereBindings</span><spanclass="p">(</span><spanclass="nx">qb</span><spanclass="p">);</span>
<spanclass="kd">var</span><spanclass="nx">sql</span><spanclass="o">=</span><spanclass="s1">'insert into '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">qb</span><spanclass="p">.</span><spanclass="nx">table</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">''</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Handles the response</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">handleResponse</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">builder</span><spanclass="p">,</span><spanclass="nx">response</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span><spanclass="nx">baseGrammar</span><spanclass="p">);</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Grammar for the schema builder.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">exports</span><spanclass="p">.</span><spanclass="nx">schemaGrammar</span><spanclass="o">=</span><spanclass="nx">_</span><spanclass="p">.</span><spanclass="nx">defaults</span><spanclass="p">({</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>The possible column modifiers.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">modifiers</span><spanclass="o">:</span><spanclass="p">[</span><spanclass="s1">'Increment'</span><spanclass="p">,</span><spanclass="s1">'Nullable'</span><spanclass="p">,</span><spanclass="s1">'Default'</span><spanclass="p">],</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile the query to determine if a table exists.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileTableExists</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'select * from information_schema.tables where table_name = ?'</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile the query to determine if a column exists in a table.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileColumnExists</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'select * from information_schema.columns where table_name = ? and column_name = ?'</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a create table command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileAdd</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a primary key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compilePrimary</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a unique key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileUnique</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a plain index key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileIndex</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s2">"create index "</span><spanclass="o">+</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">index</span><spanclass="o">+</span><spanclass="s2">" on "</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">' ('</span><spanclass="o">+</span><spanclass="nx">columns</span><spanclass="o">+</span><spanclass="s1">')'</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a drop column command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileDropColumn</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a drop primary key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileDropPrimary</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'alter table '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s2">" drop constraint "</span><spanclass="o">+</span><spanclass="nx">table</span><spanclass="o">+</span><spanclass="s2">"_pkey"</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a drop unique key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileDropUnique</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s2">"alter table "</span><spanclass="o">+</span><spanclass="nx">table</span><spanclass="o">+</span><spanclass="s2">" drop constraint "</span><spanclass="o">+</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">index</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a drop foreign key command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileDropForeign</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s2">"alter table "</span><spanclass="o">+</span><spanclass="nx">table</span><spanclass="o">+</span><spanclass="s2">" drop constraint "</span><spanclass="o">+</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">index</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a rename table command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileRenameTable</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'alter table '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">' rename to '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">to</span><spanclass="p">);</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a rename column command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileRenameColumn</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'alter table '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">' rename '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">from</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">' to '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">to</span><spanclass="p">);</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile a comment command.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileComment</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="nx">sql</span><spanclass="o">+=</span><spanclass="s1">'comment on table '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">' is '</span><spanclass="o">+</span><spanclass="s2">"'"</span><spanclass="o">+</span><spanclass="nx">command</span><spanclass="p">.</span><spanclass="nx">comment</span><spanclass="o">+</span><spanclass="s2">"'"</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Compile any additional postgres specific items.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">compileAdditional</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">command</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="k">return</span><spanclass="s1">'comment on column '</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrapTable</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s1">'.'</span><spanclass="o">+</span><spanclass="k">this</span><spanclass="p">.</span><spanclass="nx">wrap</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">.</span><spanclass="nx">name</span><spanclass="p">)</span><spanclass="o">+</span><spanclass="s2">" is '"</span><spanclass="o">+</span><spanclass="nx">column</span><spanclass="p">.</span><spanclass="nx">isCommented</span><spanclass="o">+</span><spanclass="s2">"'"</span><spanclass="p">;</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a integer type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeInteger</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a tiny integer type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeTinyInteger</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a float type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeFloat</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a decimal type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeDecimal</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a boolean type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeBoolean</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for an enum type.
Using method 2 here: http://stackoverflow.com/questions/10923213/postgres-enum-data-type-or-check-constraint</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeEnum</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a date-time type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeDateTime</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a timestamp type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeTimestamp</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a bit type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeBit</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a binary type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeBinary</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a uuid type.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeUuid</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">()</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Create the column definition for a json type,
checking whether the json type is supported - falling
back to "text" if it's not.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">typeJson</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">column</span><spanclass="p">,</span><spanclass="nx">blueprint</span><spanclass="p">)</span><spanclass="p">{</span>
<spanclass="p">},</span></div></div></div><divclass="segment"><divclass="comments"><divclass="wrapper"><p>Get the SQL for an auto-increment column modifier.</p></div></div><divclass="code"><divclass="wrapper"><spanclass="nx">modifyIncrement</span><spanclass="o">:</span><spanclass="kd">function</span><spanclass="p">(</span><spanclass="nx">blueprint</span><spanclass="p">,</span><spanclass="nx">column</span><spanclass="p">)</span><spanclass="p">{</span>