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Tutorial
13

Step 2: Create a Project and a Report

the new project: Right click the Reports node in the [Navigator] and select New > Report. Enter
Manual
13

Detached Entity Objects

). Retrieval by navigation from detached objects is not supported, so only persistent fields
Manual
13

Storing JPA Entity Objects

, the entire closure of entity objects that are reachable from that object by navigation through persistent
Manual
13

Collections in JPQL and Criteria Queries

Collections may appear in JPQL queries: as parameters - when collections are assigned as arguments. as path expressions - in navigation to persistent collection fields. IS [NOT] EMPTY The IS [NOT] EMPTY operator checks whether a specified collection is empty or not. For example: c.languages
Manual
13

Strings in JPQL and Criteria Queries

String values may appear in JPQL queries in various forms: as string literals - e.g. 'abc', ''. as parameters - when string values are assigned as arguments. as path expressions - in navigation to persistent string fields. as results of predefined JPQL string manipulation functions. LIKE - String
JDO Doc
8

javax.jdo.Query

. Navigation through a null-valued field, which would throw NullPointerException, is treated as ... for variables might still qualify the candidate instance for inclusion in the result set. Navigation ... . Navigation through single-valued fields is specified by the Java language syntax of field_name
JDO Doc
7

setFilter(filter)

to support non-mutating method calls as non-standard extensions. Navigation through a null-valued ... might still qualify the candidate instance for inclusion in the result set. Navigation through multi-valued fields ... , this is a reserved word which means the element of the collection being evaluated. Navigation through single
JDO Doc
4

setOrdering(ordering)

must be declared in the candidate class or must be a navigation expression starting with a field in the candidate
Issue
3

Unexpected Query Token / Casting in Query

;) thanks!! Alex I fixed some issue in ObjectDB in navigation after casting. Then I had to add ... on navigation to routingNumber. Another casting will not help here because bankAccounts is a collection, and you cannot navigate from a collection in JPA without introducing a variable (ObjectDB does
Forum
3

how to query by properties of onetomany relations? (Error 990)

. However, this query is invalid. You cannot navigate through collections in JPQL directly. You have to use ... navigation from collections (with no JOIN) was just added in build 2.2.4_02. The following program ... the following exception is thrown on attempt to use the new navigation from collection syntax