Example usage for com.mongodb BasicDBObjectBuilder pop

Introduction

In this page you can find the example usage for com.mongodb BasicDBObjectBuilder pop.

Prototype

public BasicDBObjectBuilder pop() 

Source Link

Document

Pops the active object, which means that the parent object becomes active

Usage

From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> simpleAggregation() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.add("_id", "$manufacturer");
    builder.push("num_products");
    builder.add("$sum", 1);
    builder.pop();
    builder.pop();// w  w w  . ja v a  2  s .co  m

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> compoundAggregation() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.push("_id");
    builder.add("manufacturer", "$manufacturer");
    builder.add("category", "$category");
    builder.pop();
    builder.push("num_products");
    builder.add("$sum", 1);
    builder.pop();//ww w .j av  a 2s .co m
    builder.pop();

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> sumPrices() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.add("_id", "$manufacturer");
    builder.push("sum_prices");
    builder.add("$sum", "$price");
    builder.pop();
    builder.pop();/*from ww  w .jav a2  s.c om*/

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> averagePrices() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.add("_id", "$category");
    builder.push("sum_prices");
    builder.add("$avg", "$price");
    builder.pop();
    builder.pop();/*from   w  w  w. j a va2 s .co m*/

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> addToSet() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.push("_id");
    builder.add("maker", "$manufacturer");
    builder.pop();
    builder.push("categories");
    builder.add("$addToSet", "$category");
    builder.pop();/* w  w w.  j a  v  a 2 s.  c  o  m*/
    builder.pop();

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> push() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.push("_id");
    builder.add("maker", "$manufacturer");
    builder.pop();
    builder.push("categories");
    builder.add("$push", "$category");
    builder.pop();//  w w w .j a  v a  2  s  .c  om
    builder.pop();

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> maxPrice() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$group");
    builder.push("_id");
    builder.add("maker", "$manufacturer");
    builder.pop();
    builder.push("maxprice");
    builder.add("$max", "$price");
    builder.pop();/*from   ww  w. ja va2 s  .c o  m*/
    builder.pop();

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> doubleGroupStages() {
    BasicDBObjectBuilder group_1 = new BasicDBObjectBuilder();
    group_1.push("$group");
    group_1.push("_id");
    group_1.add("class_id", "$class_id");
    group_1.add("student_id", "$student_id");
    group_1.pop();
    group_1.push("average");
    group_1.add("$avg", "$score");
    group_1.pop();/*  w w  w  .ja  v a2s  .  com*/
    group_1.pop();

    BasicDBObjectBuilder group_2 = new BasicDBObjectBuilder();
    group_2.push("$group");
    group_2.add("_id", "$_id.class_id");
    group_2.push("average");
    group_2.add("$avg", "$average");
    group_2.pop();
    group_2.pop();

    return col.aggregate(group_1.get(), group_2.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> project() {
    BasicDBObjectBuilder builder = new BasicDBObjectBuilder();
    builder.push("$project");
    builder.add("_id", 0);
    builder.push("maker");
    builder.add("$toLower", "$manufacturer");
    builder.pop();
    builder.push("details");
    builder.add("category", "$category");
    builder.push("price");
    builder.add("$multiply", new Object[] { "$price", 10 });
    builder.pop();//  w  ww.jav a2  s.c o  m
    builder.pop();
    builder.add("item", "$name");
    builder.pop();

    return col.aggregate(builder.get()).results().iterator();
}

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From source file:com.examples.aggregation.AggregationExample.java

License:Open Source License

public Iterator<DBObject> match() {
    BasicDBObjectBuilder match = buildMatchDBObject();
    BasicDBObjectBuilder group = new BasicDBObjectBuilder();
    group.push("$group");
    group.add("_id", "$city");
    group.push("population");
    group.add("$sum", "$pop");
    group.pop();
    group.push("zip_codes");
    group.add("$addToSet", "$_id");
    group.pop();//from   w  w w  . java  2 s .c  o  m
    group.pop();

    return col.aggregate(match.get(), group.get()).results().iterator();
}

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