summaryrefslogtreecommitdiffstats
path: root/www/c3ref/serialize.html
diff options
context:
space:
mode:
Diffstat (limited to 'www/c3ref/serialize.html')
-rw-r--r--www/c3ref/serialize.html175
1 files changed, 175 insertions, 0 deletions
diff --git a/www/c3ref/serialize.html b/www/c3ref/serialize.html
new file mode 100644
index 0000000..6d3fa70
--- /dev/null
+++ b/www/c3ref/serialize.html
@@ -0,0 +1,175 @@
+<!DOCTYPE html>
+<html><head>
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<link href="../sqlite.css" rel="stylesheet">
+<title>Serialize a database</title>
+<!-- path=../ -->
+</head>
+<body>
+<div class=nosearch>
+<a href="../index.html">
+<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0">
+</a>
+<div><!-- IE hack to prevent disappearing logo --></div>
+<div class="tagline desktoponly">
+Small. Fast. Reliable.<br>Choose any three.
+</div>
+<div class="menu mainmenu">
+<ul>
+<li><a href="../index.html">Home</a>
+<li class='mobileonly'><a href="javascript:void(0)" onclick='toggle_div("submenu")'>Menu</a>
+<li class='wideonly'><a href='../about.html'>About</a>
+<li class='desktoponly'><a href="../docs.html">Documentation</a>
+<li class='desktoponly'><a href="../download.html">Download</a>
+<li class='wideonly'><a href='../copyright.html'>License</a>
+<li class='desktoponly'><a href="../support.html">Support</a>
+<li class='desktoponly'><a href="../prosupport.html">Purchase</a>
+<li class='search' id='search_menubutton'>
+<a href="javascript:void(0)" onclick='toggle_search()'>Search</a>
+</ul>
+</div>
+<div class="menu submenu" id="submenu">
+<ul>
+<li><a href='../about.html'>About</a>
+<li><a href='../docs.html'>Documentation</a>
+<li><a href='../download.html'>Download</a>
+<li><a href='../support.html'>Support</a>
+<li><a href='../prosupport.html'>Purchase</a>
+</ul>
+</div>
+<div class="searchmenu" id="searchmenu">
+<form method="GET" action="../search">
+<select name="s" id="searchtype">
+<option value="d">Search Documentation</option>
+<option value="c">Search Changelog</option>
+</select>
+<input type="text" name="q" id="searchbox" value="">
+<input type="submit" value="Go">
+</form>
+</div>
+</div>
+<script>
+function toggle_div(nm) {
+var w = document.getElementById(nm);
+if( w.style.display=="block" ){
+w.style.display = "none";
+}else{
+w.style.display = "block";
+}
+}
+function toggle_search() {
+var w = document.getElementById("searchmenu");
+if( w.style.display=="block" ){
+w.style.display = "none";
+} else {
+w.style.display = "block";
+setTimeout(function(){
+document.getElementById("searchbox").focus()
+}, 30);
+}
+}
+function div_off(nm){document.getElementById(nm).style.display="none";}
+window.onbeforeunload = function(e){div_off("submenu");}
+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
+if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){
+document.getElementById("search_menubutton").style.display = "none";
+}
+/* Used by the Hide/Show button beside syntax diagrams, to toggle the */
+function hideorshow(btn,obj){
+var x = document.getElementById(obj);
+var b = document.getElementById(btn);
+if( x.style.display!='none' ){
+x.style.display = 'none';
+b.innerHTML='show';
+}else{
+x.style.display = '';
+b.innerHTML='hide';
+}
+return false;
+}
+var antiRobot = 0;
+function antiRobotGo(){
+if( antiRobot!=3 ) return;
+antiRobot = 7;
+var j = document.getElementById("mtimelink");
+if(j && j.hasAttribute("data-href")) j.href=j.getAttribute("data-href");
+}
+function antiRobotDefense(){
+document.body.onmousedown=function(){
+antiRobot |= 2;
+antiRobotGo();
+document.body.onmousedown=null;
+}
+document.body.onmousemove=function(){
+antiRobot |= 2;
+antiRobotGo();
+document.body.onmousemove=null;
+}
+setTimeout(function(){
+antiRobot |= 1;
+antiRobotGo();
+}, 100)
+antiRobotGo();
+}
+antiRobotDefense();
+</script>
+<!-- keywords: sqlite3_serialize -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Serialize a database</h2>
+</div>
+<blockquote><pre>
+unsigned char *sqlite3_serialize(
+ sqlite3 *db, /* The database connection */
+ const char *zSchema, /* Which DB to serialize. ex: "main", "temp", ... */
+ sqlite3_int64 *piSize, /* Write size of the DB here, if not NULL */
+ unsigned int mFlags /* Zero or more SQLITE_SERIALIZE_* flags */
+);
+</pre></blockquote>
+<p>
+The sqlite3_serialize(D,S,P,F) interface returns a pointer to memory
+that is a serialization of the S database on <a href="../c3ref/sqlite3.html">database connection</a> D.
+If P is not a NULL pointer, then the size of the database in bytes
+is written into *P.</p>
+
+<p>For an ordinary on-disk database file, the serialization is just a
+copy of the disk file. For an in-memory database or a "TEMP" database,
+the serialization is the same sequence of bytes which would be written
+to disk if that database where backed up to disk.</p>
+
+<p>The usual case is that sqlite3_serialize() copies the serialization of
+the database into memory obtained from <a href="../c3ref/free.html">sqlite3_malloc64()</a> and returns
+a pointer to that memory. The caller is responsible for freeing the
+returned value to avoid a memory leak. However, if the F argument
+contains the SQLITE_SERIALIZE_NOCOPY bit, then no memory allocations
+are made, and the sqlite3_serialize() function will return a pointer
+to the contiguous memory representation of the database that SQLite
+is currently using for that database, or NULL if the no such contiguous
+memory representation of the database exists. A contiguous memory
+representation of the database will usually only exist if there has
+been a prior call to <a href="../c3ref/deserialize.html">sqlite3_deserialize(D,S,...)</a> with the same
+values of D and S.
+The size of the database is written into *P even if the
+SQLITE_SERIALIZE_NOCOPY bit is set but no contiguous copy
+of the database exists.</p>
+
+<p>After the call, if the SQLITE_SERIALIZE_NOCOPY bit had been set,
+the returned buffer content will remain accessible and unchanged
+until either the next write operation on the connection or when
+the connection is closed, and applications must not modify the
+buffer. If the bit had been clear, the returned buffer will not
+be accessed by SQLite after the call.</p>
+
+<p>A call to sqlite3_serialize(D,S,P,F) might return NULL even if the
+SQLITE_SERIALIZE_NOCOPY bit is omitted from argument F if a memory
+allocation error occurs.</p>
+
+<p>This interface is omitted if SQLite is compiled with the
+<a href="../compile.html#omit_deserialize">SQLITE_OMIT_DESERIALIZE</a> option.
+</p><p>See also lists of
+ <a href="../c3ref/objlist.html">Objects</a>,
+ <a href="../c3ref/constlist.html">Constants</a>, and
+ <a href="../c3ref/funclist.html">Functions</a>.</p>
+