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Manual
7

Paths and Types in JPQL and Criteria API

, a NullPointerException is thrown on any attempt to access a field or a method via a null reference. In
Manual
7

SSL Configuration

when accessing remote ObjectDB databases over an insecure network such as the Internet. SSL Keystore
Tutorial
7

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Projects] window under Source Packages) and selecting New
Manual
7

Index Definition

the need to access the entities themselves. Instead, because of the comparison in the WHERE clause
FAQ
7

What is the Java Data Objects (JDO)?

The Java Data Objects (JDO) is another standard for accessing persistent data in databases, using plain old Java objects (POJO) to represent the object model. Unlike Java Persistence API (JPA), which is designated to be used with relational databases, JDO is designated to be used
FAQ
7

What is the Java Persistence API (JPA)?

The Java Persistence API (JPA) is a standard API for accessing databases from within Java applications. The main advantage of JPA over JDBC (the older Java API for interacting with databases) is that in JPA data is represented by classes and objects rather than by tables and records as in JDBC
Manual
7

SELECT clause (JPQL / Criteria API)

) + ", Capital: " + t.get(1)); } The Tuple interface defines several other methods for accessing
Tutorial
7

Step 5: Add a JSP Page

(to prevent direct access to the JSP bypassing Spring). Enter guest as the jsp file name - use exactly
Manual
7

Database Connection using JPA

.createEntityManager(); try { // TODO: Use the EntityManager to access the database } finally
Tutorial
7

Step 3: Define a Spring DAO Component

Operations on the database will be performed by an instance of a Data Access Object (DAO) that we will define in this step as a Spring MVC component: Open the [New Java Class] dialog box by right clicking the guest package node (in the [Package Explorer] window) and selecting New > Class