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Added note about Direction.BOTH for @RelatedTo. Fixed code indentation issues (tabs).

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This commit is contained in:
David Montag
2011-03-28 16:42:59 -07:00
parent 3b09ad16dc
commit 596b7ef299
1 changed files with 31 additions and 27 deletions
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58
src/docbkx/reference/programming-model/annotations.xml
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@@ -26,7 +26,7 @@
// simplest example
@NodeEntity
public class Movie {
String title;
String title;
}
]]></programlisting>
</section>
@@ -47,20 +47,26 @@ public class Movie {
null. For multi-relationships the field provides a managed collection (Set) that handles addition and
removal of node entities and reflects those in the graph relationships.
</para>
<note>
By setting direction to BOTH, relationships are created in the outgoing direction, but when the 1:N field
is read, it will include relationships in both directions.
</note>
<programlisting language="java"><![CDATA[
@NodeEntity
public class Movie {
private Actor topActor;
private Actor topActor;
}
@NodeEntity
public class Person {
@RelatedTo(type = "topActor", direction = Direction.INCOMING)
private Movie wasTopActorIn;
@RelatedTo(type = "topActor", direction = Direction.INCOMING)
private Movie wasTopActorIn;
}
@NodeEntity
public class Actor {
@RelatedTo(type = "ACTS_IN", elementClass = Movie.class)
private Set<Movie> movies;
@RelatedTo(type = "ACTS_IN", elementClass = Movie.class)
private Set<Movie> movies;
}
]]></programlisting>
</section>
@@ -82,8 +88,8 @@ public class Actor {
public class Role {
String title;
@StartNode private Actor actor;
@EndNode private Movie movie;
@StartNode private Actor actor;
@EndNode private Movie movie;
}
]]></programlisting>
</section>
@@ -100,13 +106,13 @@ public class Role {
<programlisting language="java"><![CDATA[
@NodeEntity
public class Actor {
@RelatedToVia(type = "ACTS_IN", elementClass = Role.class)
private Iterable<Role> roles;
@RelatedToVia(type = "ACTS_IN", elementClass = Role.class)
private Iterable<Role> roles;
public Role playedIn(Movie movie, String title) {
Role role=relateTo(movie,Role.class,"ACTS_IN");
role.setTitle(title);
return role;
public Role playedIn(Movie movie, String title) {
Role role=relateTo(movie,Role.class,"ACTS_IN");
role.setTitle(title);
return role;
}
}
]]></programlisting>
@@ -153,21 +159,19 @@ public class Actor {
<programlisting language="java"><![CDATA[
@NodeEntity
public class Group {
@GraphTraversal(traversalBuilder = PeopleTraversalBuilder.class,
elementClass = Person.class, params = "persons")
private Iterable<Person> people;
@GraphTraversal(traversalBuilder = PeopleTraversalBuilder.class,
elementClass = Person.class, params = "persons")
private Iterable<Person> people;
private static class PeopleTraversalBuilder implements FieldTraversalDescriptionBuilder {
@Override
public TraversalDescription build(NodeBacked start, Field field, String...params) {
return new TraversalDescriptionImpl()
.relationships(DynamicRelationshipType.withName(params[0]))
.filter(Traversal.returnAllButStartNode());
}
}
private static class PeopleTraversalBuilder implements FieldTraversalDescriptionBuilder {
@Override
public TraversalDescription build(NodeBacked start, Field field, String...params) {
return new TraversalDescriptionImpl()
.relationships(DynamicRelationshipType.withName(params[0]))
.filter(Traversal.returnAllButStartNode());
}
}
}
]]></programlisting>
</para>
</section>