Hi 

I am trying to work on Generic Related List .

Here I am unable to add row . can any one help on this issue..

This is my code :

public with sharing class RelatedListController {

String objectLabel;
String objectLabelPlural;
Boolean showNewButton;
public ApexPages.StandardSetController ssc {get; set;}
public List<String> fieldNames {get; set;}
public Map<String,String> fieldAlignMap {get; set;}
public Map<String,String> nameLabelMap {get; set;}
transient Schema.DescribeSObjectResult objectDescribe;
public Id deleteRecordId {get; set;}
public String sortByField {get; set;}
public Map<String,String> fieldSortDirectionMap {get; set;}

//----Variables set from attributes defined in the component----
public String objectName {get; set;}
public String fieldsCSV {get; set;}
public List<String> fieldsList {get; set;}
public String parentFieldName {get; set;}
public Id parentFieldId {get; set;}
public String filter {get; set;}
public String orderByFieldName {get; set;}
public String sortDirection {get; set;}
public Integer pageSize {get; set;}


public List<sObject> getRecords(){
if(ssc == null){
//Do validation to ensure required attributes are set and attributes have correct values
//fieldList or fieldsCSV must be defined
Boolean validationPass = true;

if(fieldsList == null && fieldsCSV == null){
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.WARNING,'fieldList or fieldsCSV attribute must be defined.'));
validationPass = false;
}

//Ensure sortDirection attribute has value of 'asc' or 'desc'
if(sortDirection != null && sortDirection != 'asc' && sortDirection != 'desc'){
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.WARNING,'sortDirection attribute must have value of "asc" or "desc"'));
validationPass = false;
}

//Ensure parentFieldId is not null
if(parentFieldId == null){
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.WARNING,'parentFieldId attribute can not be null'));
validationPass = false;
}

//Proceed with returning the related list if validation passed
if(validationPass == false){
return null;
}else{
//Build the query string dynamically
String queryString = 'SELECT ';

/*If field CSV was defined use this and also add fields to the fieldNames
List so they can be used with Visualforce dynamic binding to define coloumns*/
if(fieldsCSV != null){
queryString += fieldsCSV;
fieldNames = fieldsCSV.split(',');
}else{
//Add fields to fieldNames list so it can be used with VF dynamic binding to define coloumns
fieldNames = fieldsList.clone();

//Loop through list of field names in fieldList and add to query
for(String fld : fieldsList){
queryString += fld + ',';
}

//Remove the very last comma that was added to the end of the field selection part of the query string
queryString = queryString.substring(0,queryString.length() - 1);
}

//add from object and parent criteria
queryString += ' FROM ' + objectName + ' WHERE ' + parentFieldName + ' = \'' + parentFieldId + '\'';

//Add any addtional filter criteria to query string if it was defined in component
if(filter != null){
queryString += 'AND ' + filter;
}

//Add order by field to query if defined in component
//If sortByField != null then user has clicked a header and sort by this field
if(sortByField != null){
queryString += 'order by ' + sortByField;
}else if(orderByFieldName != null){
queryString += 'order by ' + orderByFieldName;
}

//If sortByField != null then user has clicked a header, sort based on values stored in map
if(sortByField != null){
/*Use a map to store the sort direction for each field, on first click of header sort asc
and then alternate between desc*/
if(fieldSortDirectionMap == null){
fieldSortDirectionMap = new Map<String,String>();
}

String direction = '';

//check to see if field has direction defined, if not or it is asc, order by asc
if(fieldSortDirectionMap.get(sortByField) == null || fieldSortDirectionMap.get(sortByField) == 'desc' ){
direction = 'asc';
fieldSortDirectionMap.put(sortByField,'asc');
}else{
direction = 'desc';
fieldSortDirectionMap.put(sortByField,'desc');
}

queryString += ' ' + direction;
}else if(sortDirection != null){
//Add sort direction to query if defined in component
queryString += ' ' + sortDirection;
}

//Add limit clause to end of the query
queryString += ' limit ' + (Limits.getLimitQueryRows() - Limits.getQueryRows());

//Query records and setup standard set controller for pagination
ssc = new ApexPages.StandardSetController(Database.query(queryString));

//Check to see if more than 10,000 records where return, if so display warning as standard set controller can only process 10,000 recores
if(ssc.getCompleteResult() == false){
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.WARNING,'There were more related records than could be processed. This is a partially complete list.'));
}

//Set pagination size based on value set in component
if(pageSize != null){
ssc.setPageSize(pageSize);
}

/*For the fields that will be displayed identify the field type and set styleClass for
cell alignment. Numbers, Currency, %, etc should align right in table. put in map FieldName -> class name*/
//Get the meta data info for the fields is the related object
Map<String, Schema.SObjectField> fieldMap = getObjectDescribe().fields.getMap();

//For the fields in the related list populate fieldAlignMap map with the name of the correct style class. Also populate name->label map for header display
fieldAlignMap = new Map<String,String>();
nameLabelMap = new Map<String,STring>();
for(String fld : fieldNames){
String fieldType = fieldMap.get(fld).getDescribe().getType().name();

if(fieldType == 'CURRENCY' || fieldType == 'DOUBLE' || fieldType == 'PERCENT' || fieldType == 'INTEGER'){
fieldAlignMap.put(fld,'alignRight');
}else{
fieldAlignMap.put(fld,'alignLeft');
}

//Add to name->label map
String label = fieldMap.get(fld).getDescribe().getLabel();
nameLabelMap.put(fld,label);
}
}
}
return ssc.getRecords();
}

public Boolean getShowNewButton(){
//Display new button if user has create permission for related object
return getObjectDescribe().isCreateable();
}

public DescribeSObjectResult getObjectDescribe(){
/*Returns object describe for related list object. This is used in many places so we are using a dedicated method that only invokes
Schema describe calls once as these count against Apex limits. Because this methodo returns a DescribeSObjectResult all the get
methods for this object can be used directly in Visualforce: {!objectDescribe.label}*/
if(objectDescribe == null){
objectDescribe = Schema.getGlobalDescribe().get(objectName).getDescribe();
}
return objectDescribe;
}

public void sortByField(){
//Making ssc variable null will cause getRecords method to requery records based on new sort by field clicked by user
ssc = null;
}

public void deleteRecord(){
//Delete the selected object
for(sObject obj : ssc.getRecords()){
if(obj.get('Id') == deleteRecordId){
delete obj;
break;
}
}

//Make ssc variable null and execute get method
ssc = null;
getRecords();

}
public void saveRecord(){
for(sObject obje : ssc.getRecords()){
upsert obje;
}
//Make ssc variable null and execute get method
ssc = null;
getRecords();

}
}