About JPQL

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Issue
12

JPQL Case Statements (JPA 2.0)

JPQL 2.0 adds support of CASE statements for conditional expressions in queries, similarly to switch/case/default in Java, and based on the SQL syntax. Case statements are currently not supported by ObjectDB. I wish to express also my interest in CASE statement support, which I need for conditional
Issue
12

JPQL Subqueries (JPA 1.0)

The JPQL (Java Persistence Query Language) supports defining subqueries, which are nested queries that are embedded in other queries. Subqueries are currently not supported by ObjectDB, and as a workaround, you can use a sequence of two or more queries, where the results of one query serves as
Forum
12

member visiting in jpql

? TIA The length field of arrays is not supported by JDOQL / JPQL queries. You may maintain an ordinary
Forum
12

Possible issue for JPQL IS EMPTY expression

Possible issue for JPQL IS EMPTY comparison expression: SELECT e FROM MyEntity e WHERE e.collection-valued IS EMPTY throws javax.persistence.PersistenceException: Invalid operand type  for operator IS EMPTY (error 756) Thanks. Note: It doesn' t work with SIZE(): SELECT e FROM MyEntity e WHERE SIZE
Forum
12

Will Entire JPQL Supported by ObjectDb?

management taken care here ? Thanks in Advance , Jana Some JPQL features are not supported yet by
JPA Doc
11

JPA Annotations for SQL Queries

The following JPA annotations are designated for SQL queries on relational databases: ObjectDB supports only the preferred JPA query language, JPQL, and silently ignores all the above annotations.
FAQ
11

What are the main benefits of using ObjectDB?

JPQL (JPA Query Language) and JDOQL (JDO Query Language) queries directly, where ORM tools first
Manual
11

ObjectDB Developer's Guide [2018-08-07]

how to use the JPA Query Language (JPQL).             Presents ObjectDB Tools: the Explorer
Manual
11

Deleting JPA Entity Objects

when many entity objects have to be deleted in one operation. The DELETE Queries in JPA/JPQL in chapter 4 explains how to use JPA DELETE queries.
Tutorial
11

Step 4: Create an ObjectDB Data Set

contains Point entity objects. We will use a simple JPQL query that retrieves points with x value in