Using querydsl with undetermined schema with mongo and spring boot
I've the following mapping:
@Document
class Event {
Object carbonCopy;
}
carbonCopy has several attributes and its schema is undetermined - various events can have different set of attributes. Assume that carbonCopy has status field. I need to find all Events that have carbonCopy.status equal to NEW. Is it possible with query DSL, how? I'm struggling with various mixes of Path and Expression instances to no avail.
java mongodb spring-boot spring-data-mongodb querydsl
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
add a comment |
I've the following mapping:
@Document
class Event {
Object carbonCopy;
}
carbonCopy has several attributes and its schema is undetermined - various events can have different set of attributes. Assume that carbonCopy has status field. I need to find all Events that have carbonCopy.status equal to NEW. Is it possible with query DSL, how? I'm struggling with various mixes of Path and Expression instances to no avail.
java mongodb spring-boot spring-data-mongodb querydsl
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25
add a comment |
I've the following mapping:
@Document
class Event {
Object carbonCopy;
}
carbonCopy has several attributes and its schema is undetermined - various events can have different set of attributes. Assume that carbonCopy has status field. I need to find all Events that have carbonCopy.status equal to NEW. Is it possible with query DSL, how? I'm struggling with various mixes of Path and Expression instances to no avail.
java mongodb spring-boot spring-data-mongodb querydsl
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
I've the following mapping:
@Document
class Event {
Object carbonCopy;
}
carbonCopy has several attributes and its schema is undetermined - various events can have different set of attributes. Assume that carbonCopy has status field. I need to find all Events that have carbonCopy.status equal to NEW. Is it possible with query DSL, how? I'm struggling with various mixes of Path and Expression instances to no avail.
java mongodb spring-boot spring-data-mongodb querydsl
java mongodb spring-boot spring-data-mongodb querydsl
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
asked Nov 20 '18 at 12:20
Opal
52.4k20104117
52.4k20104117
Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25
add a comment |
Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25
Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25
add a comment |
2 Answers
2
active
oldest
votes
You can use similar like
in terminal
db.events.find({"carbonCopy.status":"NEW"})
in termilnal if you need existance as well
db.events.find({carbonCopy.status:{"$exists":true}},"carbonCopy.status":"NEW"})
NOW when it comes to SDM
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW")
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW").And("carbonCopy.status").exists(true)
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
answered Nov 22 '18 at 5:21
Vipul
437312
add a comment |
It's possible with the following piece of code:
QEvent event = QEvent.event;
PathBuilder<Event> query = new PathBuilder<Event>(Event.class, "entity");
BooleanExpression expr = query.getMap("objectCarbonCopy", String.class, String.class).get("status").eq(Expressions.constant("NEW"));
Where QEvent is querydsl generated class.
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use similar like
in terminal
db.events.find({"carbonCopy.status":"NEW"})
in termilnal if you need existance as well
db.events.find({carbonCopy.status:{"$exists":true}},"carbonCopy.status":"NEW"})
NOW when it comes to SDM
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW")
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW").And("carbonCopy.status").exists(true)
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
answered Nov 22 '18 at 5:21
Vipul
437312
add a comment |
You can use similar like
in terminal
db.events.find({"carbonCopy.status":"NEW"})
in termilnal if you need existance as well
db.events.find({carbonCopy.status:{"$exists":true}},"carbonCopy.status":"NEW"})
NOW when it comes to SDM
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW")
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW").And("carbonCopy.status").exists(true)
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
answered Nov 22 '18 at 5:21
Vipul
437312
add a comment |
You can use similar like
in terminal
db.events.find({"carbonCopy.status":"NEW"})
in termilnal if you need existance as well
db.events.find({carbonCopy.status:{"$exists":true}},"carbonCopy.status":"NEW"})
NOW when it comes to SDM
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW")
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW").And("carbonCopy.status").exists(true)
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
answered Nov 22 '18 at 5:21
Vipul
437312
You can use similar like
in terminal
db.events.find({"carbonCopy.status":"NEW"})
in termilnal if you need existance as well
db.events.find({carbonCopy.status:{"$exists":true}},"carbonCopy.status":"NEW"})
NOW when it comes to SDM
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW")
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
Criteria criteria = Criteria.where("carbonCopy.status").is("NEW").And("carbonCopy.status").exists(true)
Query query = new Query(criteria);
return mongoTemplate.findOne(query, Event.class);
answered Nov 22 '18 at 5:21
Vipul
437312
answered Nov 22 '18 at 5:21
Vipul
437312
answered Nov 22 '18 at 5:21
Vipul
437312
answered Nov 22 '18 at 5:21
Vipul
437312
437312
add a comment |
add a comment |
It's possible with the following piece of code:
QEvent event = QEvent.event;
PathBuilder<Event> query = new PathBuilder<Event>(Event.class, "entity");
BooleanExpression expr = query.getMap("objectCarbonCopy", String.class, String.class).get("status").eq(Expressions.constant("NEW"));
Where QEvent is querydsl generated class.
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
add a comment |
It's possible with the following piece of code:
QEvent event = QEvent.event;
PathBuilder<Event> query = new PathBuilder<Event>(Event.class, "entity");
BooleanExpression expr = query.getMap("objectCarbonCopy", String.class, String.class).get("status").eq(Expressions.constant("NEW"));
Where QEvent is querydsl generated class.
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
add a comment |
It's possible with the following piece of code:
QEvent event = QEvent.event;
PathBuilder<Event> query = new PathBuilder<Event>(Event.class, "entity");
BooleanExpression expr = query.getMap("objectCarbonCopy", String.class, String.class).get("status").eq(Expressions.constant("NEW"));
Where QEvent is querydsl generated class.
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
It's possible with the following piece of code:
QEvent event = QEvent.event;
PathBuilder<Event> query = new PathBuilder<Event>(Event.class, "entity");
BooleanExpression expr = query.getMap("objectCarbonCopy", String.class, String.class).get("status").eq(Expressions.constant("NEW"));
Where QEvent is querydsl generated class.
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
answered Nov 21 '18 at 10:02
Opal
52.4k20104117
52.4k20104117
add a comment |
add a comment |
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Can you please look into below link may it help you. querydsl.com/static/querydsl/2.1.0/reference/html/ch02s07.html
– Raheela Aslam
Nov 20 '18 at 12:24
@RaheelaAslam have you checked the link before suggesting it? Is there any particular section I should pay attention to?
– Opal
Nov 20 '18 at 12:25