How to get the td element without using row number in protractor - selenium-webdriver

Question

I have the existing method like below,
getSpecificCell: function(tableObject, rowNumber, columnCss) {
var ele = element(by.repeater(tableObject).row(rowNumber)).element(by.css('[' + columnCss + ']'));
return ele;
}
Is that possible to do the same using the row text instead of rowNumber?
Form the below html I need to get the column value without using the row number
HTML sample:
<table class="table">
<thead>
<tr>
<th class="checkbox-column"></th>
<th class="main-column main-column--checkbox">Name</th>
</tr>
</thead>
<tbody ng-repeat="(a, b) in tests" class="ng-scope" style="">
<tr class="panel__sub-header">
<td>
<input name="item-checkbox" ng-click="toggleSelectAll(a)" type="checkbox">
</td>
<td colspan="4">
<h4 class="ng-binding">ROW2</h4>
</td>
</tr>
<tr ng-repeat="test in testData" ng-class-odd="'odd'" ng-class-even="'even'" class="ng-scope odd" style="">
<td class="checkbox-column"><input name="item-checkbox" ng-click="checkFunction()" type="checkbox"></td>
<td class="main-column">
<a ng-href="#" class="ng-binding" href="#">test.name</a>
</td>
</tr>
<tr ng-repeat="test in testData" ng-class-odd="'odd'" ng-class-even="'even'" class="ng-scope odd" style="">
<td class="checkbox-column"><input name="item-checkbox" ng-click="checkFunction()" type="checkbox"></td>
<td class="main-column">
<a ng-href="#" class="ng-binding" href="#">test.data</a>
</td>
</tr>
</tbody>
<tbody ng-repeat="(a, b) in tests" class="ng-scope" style="">
<tr class="panel__sub-header">
<td>
<input name="item-checkbox" ng-click="toggleSelectAll(a)" type="checkbox">
</td>
<td colspan="4">
<h4 class="ng-binding">ROW1</h4>
</td>
</tr>
<tr ng-repeat="test in testData" ng-class-odd="'odd'" ng-class-even="'even'" class="ng-scope odd" style="">
<td class="checkbox-column"><input name="item-checkbox" ng-click="checkFunction()" type="checkbox"></td>
<td class="main-column">
<a ng-href="#" class="ng-binding" href="#">test.name</a>
</td>
</tr>
<tr ng-repeat="test in testData" ng-class-odd="'odd'" ng-class-even="'even'" class="ng-scope odd" style="">
<td class="checkbox-column"><input name="item-checkbox" ng-click="checkFunction()" type="checkbox"></td>
<td class="main-column">
<a ng-href="#" class="ng-binding" href="#">test.data</a>
</td>
</tr>
</tbody>
</table>

Answer 1

You can use filter() method to filter the array of WebElement. have a look at below example,
getSpecificCell: function(tableObject, expectedRowValue, columnCss) {
var ele =element.all(by.repeater(tableObject).filter(function(rowElement){
return rowElement.element(by.css("td h4")).getText().then(function(rowValue){
return rowValue == expectedRowValue;
})
}).first().element(by.‌​css('[' + columnCss + ']'));
return ele;
}