OK...here it is... completely untested! This is a rough draft for
community suggestions. This is the CFC guru spot... so let me know what
else should be done with this object guys. I can create a project for
this on CFOpen if anyone is interested in it.
Thanks,
John Farrar
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<cfcomponent displayname="QueryIterator" output="false">
<!--- This CFC is the property of SOSensible. You may use it free of
charge under standard
GNU Open Source Lisc. practices. You may use it for personal or
commercial and modify it
to your needs at no charge. The only exceptions are that you may not
remove this notice and
you must not hold our company or employees liable in any way for it's
performance. If you enhance
this component we request that you send a copy of your enhancements to
us at [EMAIL PROTECTED]
for our review so that the spirit of this open source object will
continue to grow for the
community at large.
www.sosensible.com --->
<cfset variables.query = queryNew("empty","VarChar")>
<cfset variables.currentRow = 0>
<cfset variables.recordCount = 0>
<cfset variables.columnList = "">
<cffunction name="init" access="public" returntype="any" output="false">
<cfargument name="query" type="query" required="yes">
<cfset var local = structNew()>
<cfscript>
variables.query = duplicate(arguments.query);
variables.columnList = arguments.query.columnList;
variables.currentRow = 1;
variables.recordCount = arguments.query.recordCount;
</cfscript>
<cfreturn this>
</cffunction>
<cffunction name="getColumnList" access="public" returntype="numeric"
output="false">
<cfreturn variables.columnList>
</cffunction>
<cffunction name="getCurrentRecord" access="public" returntype="query"
output="false">
<cfargument name="column" type="variablename" required="yes">
<cfset var local = structNew()>
<cfreturn
duplicate(variables.query[arguments.column][variables.currentRow])>
</cffunction>
<cffunction name="getCurrentRow" access="public" returntype="numeric"
output="false">
<cfreturn variables.currentRow>
</cffunction>
<cffunction name="getRecordCount" access="public" returntype="numeric"
output="false">
<cfreturn variables.recordCount>
</cffunction>
<cffunction name="hasNext" access="public" returntype="boolean"
output="false">
<cfreturn (variables.currentRow lt variables.query.recordCount)>
</cffunction>
<cffunction name="hasPrevious" access="public" returntype="boolean"
output="false">
<cfreturn (variables.currentRow gt 1)>
</cffunction>
<cffunction name="isFirst" access="public" returntype="boolean"
output="false">
<cfreturn (variables.currentRow EQ 1)>
</cffunction>
<cffunction name="isLast" access="public" returntype="boolean"
output="false">
<cfreturn (variables.currentRow EQ variables.query.recordCount)>
</cffunction>
<cffunction name="moveFirst" access="public" returntype="boolean"
output="false">
<cfset var local = structNew()>
<cfif variables.recordCount GTE 1>
<cfset variables.currentRow = 1>
<cfset local.myReturn = TRUE>
<cfset setAttributes()>
<cfelse>
<cfset local.myReturn = FALSE>
</cfif>
<cfreturn local.myReturn>
</cffunction>
<cffunction name="moveLast" access="public" returntype="boolean"
output="false">
<cfset var local = structNew()>
<cfif variables.recordCount GTE 1>
<cfset variables.currentRow = variables.recordCount>
<cfset local.myReturn = TRUE>
<cfset setAttributes()>
<cfelse>
<cfset local.myReturn = FALSE>
</cfif>
<cfreturn local.myReturn>
</cffunction>
<cffunction name="moveNext" access="public" returntype="boolean"
output="false">
<cfset var local = structNew()>
<cfif hasNext()>
<cfset variables.currentRow = variables.currentRow + 1>
<cfset local.myReturn = TRUE>
<cfset setAttributes()>
<cfelse>
<cfset local.myReturn = FALSE>
</cfif>
<cfreturn local.myReturn>
</cffunction>
<cffunction name="movePrevious" access="public" returntype="boolean"
output="false">
<cfset var local = structNew()>
<cfif hasPrevious()>
<cfset variables.currentRow = variables.currentRow - 1>
<cfset local.myReturn = TRUE>
<cfset setAttributes()>
<cfelse>
<cfset local.myReturn = FALSE>
</cfif>
<cfreturn local.myReturn>
</cffunction>
<cffunction name="setAttributes" access="private" returntype="boolean"
output="No">
<cfset var local = structNew()>
<cfset local.myReturn = TRUE>
<cftry>
<cfloop index="columnName" list="#variables.columnList#">
<cfset "this.#columnName#" =
variables.query[columnName]>
</cfloop>
<cfcatch>
<cfset local.myReturn = FALSE>
</cfcatch>
</cftry>
<cfreturn local.myReturn>
</cffunction>
</cfcomponent>
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