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arrayOfObjectsToQuery(theArray)

Last updated June 11, 2009

author

Don Quist

Version: 0 | Requires: CF6 | Library: DataManipulationLib

Description:
Converts an array of objects to a CF Query Object. Only works with "Bean" style CFCs. Uses the result of all getX methods to populate the query. Based on arrayOfStructuresToQuery by David Crawford http://cflib.org/udf/ArrayOfStructuresToQuery

Return Values:
Returns a query.

Example:

<cfset test1 = CreateObject('component','someObj').init( 'foo', 'bar' ) />
<cfset test2 = CreateObject('component','someObj').init( 'foo1', 'bar1' ) />
<cfset myArray = ArrayNew(1) />
<cfset arrayAppend(myArray,test1) />
<cfset arrayAppend(myArray,test2) />

<cfset QoQ = arrayOfObjectsToQuery(myArray)>

<cfdump var="#QoQ#" />

Parameters:

Name Description Required
theArray The array of CFCs. Yes

Full UDF Source:

/**
 * Converts an array of objects to a CF Query Object.
 * 
 * @param theArray 	 The array of CFCs. (Required)
 * @return Returns a query. 
 * @author Don Quist (don.sigmaprojects@gmail.com) 
 * @version 0, June 11, 2009 
 */
function arrayOfObjectsToQuery(theArray){
    var colNames = ArrayNew(1);
    var theQuery = queryNew("");
    var i=0;
    var j=0;
	var o=0;
	var functions = '';
    //if there's nothing in the array, return the empty query
    if(NOT arrayLen(theArray)) return theQuery;
	
	//get meta data for the first object in the array and set the functions
	functions = getMetaData(theArray[1]).functions;
    //get the column names into an array =    
	for(o=1; o LTE arrayLen(functions); o=o+1){
		if( REFindNoCase( 'get+', functions[o].NAME ) and functions[o].NAME IS NOT 'init' ) {
			arrayAppend(colNames, LCase(REReplaceNoCase(functions[o].NAME, "^get",'' )) );
		}
	}

	theQuery = queryNew(arrayToList(colNames));
	
    //add the right number of rows to the query
    queryAddRow(theQuery, arrayLen(theArray));
    //for each element in the array, loop through the columns, populating the query
    for(i=1; i LTE arrayLen(theArray); i=i+1){
        for(j=1; j LTE arrayLen(colNames); j=j+1){
			//bug out incase something isnt defined in the object
			try {
				querySetCell(theQuery, colNames[j], Evaluate('theArray[i].get#colNames[j]#()'), i);
			}
			catch(Any excpt) { }
        }
    }
    return theQuery;
}
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