dbobject

Converting DBObject to Java Object while retrieve values from MongoDB

由 时光毁灭记忆、已成空白 提交于 2019-12-09 10:12:00
问题 From my Java application, I have stored the values in mongoDB in ArrayList(set of Java objects). How can I retrieve the data from DBObject I am storing the data in mongoDB like this: { "students" : [{"firstName" : "Jesse", "lastName" : "Varnell", "age" : "15", "gender" : "M" }, { "firstName" : "John", "lastName" : "Doe", "age" : "13", "gender" : "F"}] } I am having the Java Object for the Student like: public class Student { public String firstName; public String lastName; public String age;

Insert DBObject into MongoDB using Spring Data

由 。_饼干妹妹 提交于 2019-12-04 19:52:28
问题 I tried to insert the following DBObject into MongoDB using Spring Data: BasicDBObject document = new BasicDBObject(); document.put("country", "us"); document.put("city", "NY"); mongoTemplate.insert(document); where mongoTemplate is my Spring template (org.springframework.data.mongodb.core.MongoTemplate). When executing, I get: Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: No Persitent Entity information found for the class com.mongodb.BasicDBObject at org

Converting DBObject to Java Object while retrieve values from MongoDB

由 假装没事ソ 提交于 2019-12-03 13:46:47
From my Java application, I have stored the values in mongoDB in ArrayList(set of Java objects). How can I retrieve the data from DBObject I am storing the data in mongoDB like this: { "students" : [{"firstName" : "Jesse", "lastName" : "Varnell", "age" : "15", "gender" : "M" }, { "firstName" : "John", "lastName" : "Doe", "age" : "13", "gender" : "F"}] } I am having the Java Object for the Student like: public class Student { public String firstName; public String lastName; public String age; public String gender; // M, F } I am retrieving the data from mongoDB like: BasicDBObject query = new

Insert DBObject into MongoDB using Spring Data

由 久未见 提交于 2019-12-03 13:03:05
I tried to insert the following DBObject into MongoDB using Spring Data: BasicDBObject document = new BasicDBObject(); document.put("country", "us"); document.put("city", "NY"); mongoTemplate.insert(document); where mongoTemplate is my Spring template (org.springframework.data.mongodb.core.MongoTemplate). When executing, I get: Caused by: org.springframework.dao.InvalidDataAccessApiUsageException: No Persitent Entity information found for the class com.mongodb.BasicDBObject at org.springframework.data.mongodb.core.MongoTemplate.determineCollectionName(MongoTemplate.java:1747) at org

Convert DBObject to a POJO using MongoDB Java Driver

由 [亡魂溺海] 提交于 2019-11-27 14:39:41
问题 MongoDB seems to return BSON/JSON objects. I thought that surely you'd be able to retrieve values as Strings, ints etc. which can then be saved as POJO. I have a DBObject (instantiated as a BasicDBObject) as a result of iterating over a list ... (cur.next()). Is the only way (other than using some sort of persistence framework) to get the data into a POJO to use a JSON serlialiser/deserialiser? My method looks like this: public List<User> findByEmail(String email){ DBCollection userColl; try
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