3 | Database Explorer it from the command line as follows: > java -jar explorer.jar If explorer.jar is not in the current ... to close a currently open database connection. Viewing Database Content Viewer Windows The Explorer ... ] tabbed window or an object in a currently open Table or Tree window). You can open a new viewer |
3 | GROUP BY and HAVING clauses. Only identification variables and path expressions are currently supported in the GROUP BY clause by ... the minimum of comparable values (numeric, strings, dates). MAX - returns the maximum of comparable values (numeric, strings, dates). The following query counts for every letter the number of countries |
3 | Paths and Types in JPQL and Criteria API, string, date). Simple type values are more useful in queries. They have special operators ... (number, boolean, string, date). For a path expression to be valid the user defined persistable class ... , the current FROM variable (or FROM tuple when there are multiple variables) is simply skipped |
3 | FROM clause (JPQL / Criteria API), CHARACTER_LENGTH, CLASS, COALESCE, CONCAT, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP |
3 | Retrieving JPA Entity Objects specifying FetchType.LAZY in either @OneToOne or @ManyToOne annotations (currently ObjectDB does not ... in @OneToMany or @ManyToMany annotations (currently ObjectDB does not distinguish between ... of the current fetch policy, as long as the EntityManager is open. This also includes fields that reference |
3 | Index Definition indexedField3; @Unique Integer indexedField4; // unique @Unique(name="u2") Date indexedField5 ... , Long, Float, Double. java.math.BigInteger, java.math.BigDecimal. java.lang.String. java.util.Date, java.sql.Date, java.sql.Time, java.sql.Timestamp. Any enum type. Reference to an entity object |
0 | Step 2: Entity Class and Persistence Unit with the following code: package guest; import java.io.Serializable; import java.sql.Date; import javax ... ; private Date signingDate; // Constructors: public Guest() { } public Guest(String name) { this.name = name; this.signingDate = new Date(System.currentTimeMillis |
0 | Step 2: Entity Class and Persistence Unit.Serializable; import java.sql.Date; import javax.persistence.Entity; import javax.persistence ... Long id; private String name; private Date signingDate; // Constructors ... ; this.signingDate = new Date(System.currentTimeMillis()); } // String Representation |
0 | Step 2: Entity Class and Persistence Unit; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue ... Long id; private String name; private Date signingDate; // Constructors: public ... ; this.signingDate = new Date(System.currentTimeMillis()); } // String Representation: @Override |
0 | javax.jdo.JDOEntityManager if the instance is a managed entity instance belonging to the current persistence context. Check if the instance is a managed entity instance belonging to the current persistence context. Parameters: entity ... is already deleted in the current transaction. This method throws JDOUserException if the instance is transient |
