Spring Data MongoDB - Spring Web Services - Parent - SpringSource

please define productname in your docbook file!public class XObject {private float x;private float count;public float getX() {return x;}public void setX(float x) {this.x = x;}public float getCount() {return count;}public void setCount(float count) {this.count = count;}}@Overridepublic String toString() {return "XObject [x=" + x + " count = " + count + "]";}You can also obtain tha raw result as a DbObject by calling the method getRawResults on theGroupByResults class.There is an additional method overload of the group method on MongoOperations which lets youspecify a Criteria object for selecting a subset of the rows. An example which uses a Criteriaobject, with some syntax sugar using static imports, as well as referencing a key-function and reducefunction javascript files via a Spring Resource string is shown below.import static org.springframework.data.mongodb.core.mapreduce.GroupBy.keyFunction;import static org.springframework.data.mongodb.core.query.Criteria.where;GroupByResults results = mongoTemplate.group(where("x").gt(0),"group_test_collection",keyFunction("classpath:keyFunction.js").initialDocument("{ count:0 }").reduceFunction("classpath:groupReduce.js"), XObject.class);5.9 Aggregation Framework SupportSpring Data MongoDB provides support for the Aggregation Framework introduced to MongoDB inversion 2.2.The MongoDB Documentation describes the Aggregation Framework as follows:“The MongoDBaggregation framework provides a means to calculate aggregated values without having to use mapreduce.While map-reduce is powerful, it is often more difficult than necessary for many simpleaggregation tasks, such as totaling or averaging field values.”For further information see the full reference documentation of the aggregation framework and otherdata aggregation tools for MongoDB.1.4.0.BUILD-SNAPSHOTSpring Data MongoDB -Reference Documentation 53