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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
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- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
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- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
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- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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-->
<refentry id="fn_serialize">
<refmeta>
<refentrytitle>serialize</refentrytitle>
<refmiscinfo>string</refmiscinfo>
<refmiscinfo>array</refmiscinfo>
</refmeta>
<refnamediv>
<refname>serialize</refname>
<refname>deserialize</refname>
<refpurpose>convert any heterogeneous array or tree of arrays into a binary string and back</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_serialize">
<funcprototype id="fproto_serialize">
<funcdef>binary string <function>serialize</function></funcdef>
<paramdef>in <parameter>tree</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
<funcsynopsis id="fsyn_deserialize">
<funcprototype id="fproto_deserialize">
<funcdef>binary string <function>deserialize</function></funcdef>
<paramdef>in <parameter>str</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc"><title>Description</title>
<para>These functions will convert any heterogeneous
array or tree of arrays into a binary string and back. The format
is platform independent.</para>
<programlisting>
deserialize (serialize (x))
</programlisting>
<para>is the identity function.
</para>
<para>
These functions are useful for persisting heterogeneous arrays.
</para>
<note>
<title>Note:</title>
<para>The serialization can be stored as a blob, so that there is no practical
length limit. The string length is however limited to 16 MB.
</para>
</note>
</refsect1>
</refentry>
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