Java 实现对mongodb and or 和and or联合查询操作

 转载:

AND:

public void testAnd(){
//agender='female' AND age > 27
DBObject queryCondition = new BasicDBObject();
queryCondition.put("agender", "female");
queryCondition.put("age", new BasicDBObject("$gt", 27));
DBCursor dbCursor = coll.find(queryCondition);
assertEquals(1, dbCursor.size());
assertEquals("Jane", dbCursor.next().get("username"));
}

OR:

public void testOrSingleField(){
DBObject queryCondition = new BasicDBObject();
//age<15 OR age>27
queryCondition = new BasicDBObject();
BasicDBList values = new BasicDBList();
values.add(new BasicDBObject("age", new BasicDBObject("$gt", 27)));
values.add(new BasicDBObject("age", new BasicDBObject("$lt", 15)));
queryCondition.put("$or", values);

DBCursor dbCursor = coll.find(queryCondition);
assertEquals(3, dbCursor.size());
assertEquals("tom", dbCursor.next().get("username"));
}

OR:

public void testOrMultiFields(){
DBObject queryCondition = new BasicDBObject();
//agender=female OR age<=23
queryCondition = new BasicDBObject();
BasicDBList values = new BasicDBList();
values.add(new BasicDBObject("agender", "female"));
values.add(new BasicDBObject("age", new BasicDBObject("$lte", 23)));
queryCondition.put("$or", values);

DBCursor dbCursor = coll.find(queryCondition);
assertEquals(4, dbCursor.size());
assertEquals("Jim", dbCursor.next().get("username"));
}

in:

public void testIn(){
DBObject queryCondition = new BasicDBObject();
//age in [13, 47]
queryCondition = new BasicDBObject();
BasicDBList values = new BasicDBList();
values.add(13);
values.add(47);
queryCondition.put("age", new BasicDBObject("$in", values));

DBCursor dbCursor = coll.find(queryCondition);
assertEquals(2, dbCursor.size());
assertEquals("tom", dbCursor.next().get("username"));
}

自己的:

and 和or的联合查询条件 (换成sql 这个查询条件就是  m=1 and (a=0 or a=1) and (b=1 or c=1))

public  DBObject getWhereField(){
DBObject wheremap = new BasicDBObject();
wheremap.put("m", 1);
//

DBObject[] orDbj = new BasicDBObject[2];
orDbj[0] = new BasicDBObject("a", 0);
orDbj[1] = new BasicDBObject("a", 1);

DBObject[] orDbj1 = new BasicDBObject[2];
orDbj1[0] = new BasicDBObject("b", 1);
orDbj1[1] = new BasicDBObject("c", 1);

BasicDBList values = new BasicDBList();
values.add(new BasicDBObject("$or", orDbj));
values.add(new BasicDBObject("$or", orDbj1));

wheremap.put("$and", values);
return wheremap;
}