Mongotemplate templates provided by spring data MongoDB for aggregation operation practices

Use the Mongotemplate template provided by spring data MongoDB for aggregation operation practices

public class Flowsizeaggregatetest
{
public static void Main (string[] args) throws Exception
{
ApplicationContext context = new Classpathxmlapplicationcontext (
"Classpath*:meta-inf/spring/*.xml");

Mongotemplate mongotemplate = (org.springframework.data.mongodb.core.MongoTemplate) context
. Getbean (Mongotemplate.class);

Criteria =
Criteria.where ("UserName"). Is ("123123@123.com");
Aggregation Aggregation = aggregation.newaggregation (Aggregation
. Group ("UserName"). SUM ("Flowsize"). As ("Tatoalflowsize"). SUM ("Amount"). As ("TotalAmount"));
aggregationresults<user> aggres = mongotemplate.aggregate (Aggregation,
"Flow_2016_10", User.class);
list<user> listres = Aggres.getmappedresults ();

for (User user:listres)
{
SYSTEM.OUT.PRINTLN (user);
}
System.out.println (Listres.size ());
}

}

Class User implements Serializable
{

/**
*
*/
Private static final long serialversionuid = -6420217644123680385l;


Private String _id;


Private String tatoalflowsize;


Private Double TotalAmount;


Public String get_id ()
{
return _id;
}
public void set_id (String _id)
{
this._id = _id;
}
Public String gettatoalflowsize ()
{
return tatoalflowsize;
}
public void Settatoalflowsize (String tatoalflowsize)
{
This.tatoalflowsize = tatoalflowsize;
}
Public Double Gettotalamount ()
{
return totalamount;
}
public void Settotalamount (Double totalamount)
{
This.totalamount = TotalAmount;
}
@Override
Public String toString ()
{
Return "User [_id=" + _id + ", tatoalflowsize=" + tatoalflowsize
+ ", totalamount=" + TotalAmount + "]";
}


}

Use the Mongotemplate template provided by spring data MongoDB for aggregation operational practices

public class Flowsizeaggregatetest
{
public static void Main (string[] args) throws Exception
{

ApplicationContext context = new Classpathxmlapplicationcontext (
"Classpath*:meta-inf/spring/*.xml");


Mongotemplate mongotemplate = (org.springframework.data.mongodb.core.MongoTemplate) context
. Getbean (Mongotemplate.class);


Criteria =
Criteria.where ("UserName"). Is ("123123@123.com");
Aggregation Aggregation = aggregation.newaggregation (Aggregation
. Group ("UserName"). SUM ("Flowsize"). As ("Tatoalflowsize"). SUM ("Amount"). As ("TotalAmount"));
aggregationresults<user> aggres = mongotemplate.aggregate (Aggregation,
"Flow_2016_10", User.class);
list<user> listres = Aggres.getmappedresults ();


for (User user:listres)
{
SYSTEM.OUT.PRINTLN (user);
}
System.out.println (Listres.size ());
}

}

Class User implements Serializable
{

/**
 * 
 */
private static final long Serialversionuid = -6420217644123680385l;


Private String _id;

Private String tatoalflowsize;

Private Double totalamount;

Public String get_id ()
{
return _id;
}


public void set_id (String _id)
{
this._id = _id;
}

Public String gettatoalflowsize ()
{
return tatoalflowsize;
}

public void settatoalflowsize (String tatoalflowsize)
{
This.tatoalflowsize = tatoalflowsize;
}

Public Double gettotalamount ()
{
return totalamount;
}

public void Settotalamount (Double totalamount)
{
This.totalamount = TotalAmount;
}

@Override
Public String toString ()
{
return "User [_id=" + _id + ", tatoalflowsize=" + tatoalflowsize
+ ", totalamount=" + TotalAmount + "]";
}

}