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The "Aggregators" page has been changed by AnastasisAndronidis: https://wiki.apache.org/hama/Aggregators?action=diff&rev1=4&rev2=5 There are lots of different aggregators and you can also make your own. Look for already implemented aggregators in org.apache.hama.graph package. + === Start working with aggregators === + + === Get results === + Inside your vertex, you can get the results of each aggregator by using this method: + + {{{ + this.getAggregatedValue(0); + }}} + + The parameter of this method is a number that is equivalent to the order of the registered aggregator. (The first registered aggregator is number 0, second is number 1 etc.) + + === Write your own aggregators === + To write your own aggregator, you have o extend AbstractAggregator class and implement the methods of #aggregate(value) and #getValue(). For more, please see the default implemented aggregators in org.apache.hama.graph package. +
