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Comparing two Objects

· Java Zone

What every Java engineer should know about microservices: Reactive Microservices Architecture.  Brought to you in partnership with Lightbend.

I recently wanted to compare two objects to see if they were the same. After looking through the cfml ref I couldn't find anything, but I did find that you can use ArrayFind to do it.

Here's a quick test I wrote:

Foo.cfc

component 
{ 
  this.uuid = CreateUUID(); 
}

test.cfm

<cfset foo = new foo()>
<cfset bar = new foo()>
<cfoutput>

is foo equal to foo? #ArrayFind( [foo], foo ) gt 0#<br />
is foo equal to bar? #ArrayFind( [foo], bar ) gt 0#<br />
</cfoutput>

The output when I run this script is:

is foo equal to foo? YES

is foo equal to bar? NO

It also works with persistent entities, this is a test I wrote using the cfcodeexplorer datasource:

<cfset NewArtist = EntityNew( "Artist" )>
<cfset Artist = EntityLoadByPK( "Artist", 1 )>
<cfset Artist2 = EntityLoadByPK( "Artist", 1 )>

<cfset foo = new foo()>

<cfoutput>
is Artist equal to Artist? #ArrayFind( [Artist], Artist ) gt 0#<br />
is NewArtist equal to Artist? #ArrayFind( [NewArtist], Artist ) gt 0#<br />
is Artist equal to Artist2? #ArrayFind( [Artist], Artist2 ) gt 0#<br />
is foo equal to Artist? #ArrayFind( [foo], Artist ) gt 0#
</cfoutput>

The output when I run this script is:

is Artist equal to Artist? YES
is NewArtist equal to Artist? NO
is Artist equal to Artist2? YES
is foo equal to Artist? NO

Microservices for Java, explained. Revitalize your legacy systems (and your career) with Reactive Microservices Architecture, a free O'Reilly book. Brought to you in partnership with Lightbend.

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Published at DZone with permission of John Whish, DZone MVB. See the original article here.

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