| Option name | Type | Description |
|---|---|---|
| childOperator | Object | a child operator |
Count operator. TODO.
function CountOperator(childOperator){
var self = this;
Operator.call(this, childOperator);
Get the next matching block from both left and right operators
self.getNextValueBlock = function(){
var block = null,
count = 0;
if(this.childOperator != null){
block = this.childOperator.getNextValueBlock();
if(block == null)
return null;
do{
count += block.getSize();
block = this.childOperator.getNextValueBlock();
}while(block != null);
}
return new BasicBlock(count, 0);
};
Get the next position block
self.getNextPositionBlock = function(){
};
}
CountOperator.prototype = Object.create(Operator.prototype);
CountOperator.prototype.constructor = CountOperator;
return CountOperator;
});