If you want to bind them dynamically, you can also do this with expression language. It takes a bit of getting around in order to get the fields editable, but the way I've resolved it is to pass a calculated ID into a custom control, then using that for the binding.
For example: If I'm Working with a list of Unique Part Names, I may pass into my custom control a variable for a Comment. If I pass this in as fieldNameComment to my custom control, I can dynamically bind it to an inputText element through the following code.
I'm using a DominoDocument passed in as the dataSource.
Calling the Custom Control:
<xp:repeat var="CurrVal" value="#{DataSource}">
<xc:DynamicTableRow dataSource="#{EmissionsDocument}">
<xc:this.fieldNameComment><![CDATA[#{javascript:CurrVal+"Comment"}]]></xc:this.fieldNameComment>
</xc:DynamicTableRow>
</xp:repeat>
Inside the Custom Control:
<xp:inputText id="inputText5"
value="#{compositeData.dataSource[compositeData.fieldNameComment]}">
</xp:inputText>
As long as (for some reason) none of the string calculations are performed within the expression language syntax, this will yield an editable field. In my testing, if I tried to calculate a value by concatenating any strings, the field would be bound, but not appear as editable under any circumstances. If you want to bind directly to fields, this may be a good approach, but if you want to save your array and parse it through java, then Stephan's solution also works great Hope this helps!
Appended: Added repeat control to show iteration through the data source. Each iteration of the Data Source yeilds a value, CurrVal, to which the string "Comment" is appended. This creates a series of FieldNames based on the Values in the DataSource that are bound to inputs within the custom control called DynamicTableRow
