ManyToMany
This trait is what is referred by both the left and right side of a manyToMany relation. Type parameters are : O: the type at the "other" side of the relation A: the association type i.e. the entity in the "middle" of the relation
Object mapping to the "middle" entity are called "association objects"
this trait extends Query[O] and can be queried against like a normal query.
Note that this trait is used on both "left" and "right" sides of the relation, but in a given relation
Attributes
- Source
- ManyToMany.scala
- Graph
-
- Supertypes
Members list
Value members
Abstract methods
Value parameters
- a:
-
the association object Sets the foreign keys of the association object to the primary keys of the left and right side, this method does not update the database, changes to the association object must be done for the operation to be persisted. Alternatively the method 'associate(o, a)' will call this assign(o, a) and persist the changes.
Attributes
- Returns
-
the 'a' parameter is returned
- Source
- ManyToMany.scala
Creates a new association object 'a' and calls assign(o,a)
Value parameters
- a:
-
the association object Calls assign(o,a) and persists the changes the database, by inserting or updating 'a', depending on if it has been persisted or not.
Attributes
- Returns
-
the 'a' parameter is returned
- Source
- ManyToMany.scala
Creates a new association object 'a' and calls associate(o,a)
Creates a new association object 'a' and calls associate(o,a)
Note that this method will fail if the association object has NOT NULL constraint fields apart from the foreign keys in the relations
Attributes
- Source
- ManyToMany.scala
Attributes
- Returns
-
a Query of Tuple2 containing all objects on the 'other side' along with their association object
- Source
- ManyToMany.scala
a Query returning all of this member's association entries
Causes the deletion of the 'Association object' between this side and the other side of the relation.
Causes the deletion of the 'Association object' between this side and the other side of the relation.
Attributes
- Returns
-
true if 'o' was associated (if an association object existed between 'this' and 'o') false otherwise
- Source
- ManyToMany.scala
Deletes all "associations" relating this "side" to the other
Attributes
- Source
- ManyToMany.scala
Inherited methods
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Queryable
- Source
- Queryable.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Returns the first row of the query. An exception will be thrown if the query returns no row or more than one row.
Returns the first row of the query. An exception will be thrown if the query returns no row or more than one row.
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Returns Some(singleRow), None if there are none, throws an exception if the query returns more than one row.
Returns Some(singleRow), None if there are none, throws an exception if the query returns more than one row.
Attributes
- Inherited from:
- Query
- Source
- Query.scala
returns a 'pretty' statement, i.e. values are printed instead of '?'
returns a 'pretty' statement, i.e. values are printed instead of '?'
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Query
- Source
- Query.scala
Attributes
- Inherited from:
- Queryable
- Source
- Queryable.scala