ColdFusion 9.0 Resources

ObjectSave

Description

Converts a ColdFusion array, CFC, DateTime object, Java object, query, or structure into a serializable binary object and optionally saves the object in a file.

Returns

A serializable binary representation of the object.

Function syntax

ObjectSave(object[, filePath])

Parameters

Parameter	Description
`object`	The complex object, such as a query or CFC, that will be serialized.
`filePath`	The path of the file in which to save the serialized data.

Usage

This function is useful for handling dynamic data that has a relatively long period of usefulness and takes substantial time or resources to obtain. It lets you save the data in a file and use it in multiple application instances.

For example, you can create a CFC that stores a query that takes long time to run and retrieves infrequently updated data. If you use the ObjectSave function to initially save the CFC as a file, and deserialize the CFC file on future application starts, you can improve application performance.

Example

<h3>Saving and loading an object</h3> 
 
<!--- Create the component object. ---> 
<cfobject component="tellTime" name="tellTimeObj"> 
<!--- Save the component object to a file. ---> 
<cfset ObjectSave(tellTimeObj, "data.out")/> 
 
<!--- Load the component object again. ---> 
<cfset ObjLoaded = ObjectLoad("data.out") > 
 
<!--- Invoke the methods from loaded objects. ---> 
<cfinvoke component="#ObjLoaded#" method="getLocalTime" returnvariable="localTime"> 
<cfinvoke component="#ObjLoaded#" method="getUTCTime" returnvariable="UTCTime"> 
<!--- Display the results. ---> 
<h3>Time Display Page</h3> 
<cfoutput> 
Server's Local Time: #localTime#<br> 
Calculated UTC Time: #UTCTime# 
</cfoutput>