11 | Remove a modified entity cause an optimistic lock exceptionHello, the following examples load and modify an entity, and load and remove the same entity. The first example 'SetAndRemoveIssue.java' is a simple java program which executes without errors. The second example is an OSGi program which fails with an optimistic lock exception. Both examples |
2 | javax.persistence.ManyToOne with the dot notation is the name of the respective embedded field or property. Example 1 ... Customer getCustomer() { return customer; } Example 2: @Entity public class Employee |
2 | javax.persistence.Basic property, the default values of the Basic annotation will apply. Example 1: @Basic protected String name; Example 2: @Basic(fetch=LAZY) protected String getName() { return name |
2 | javax.persistence.JoinColumn itself is defaulted, a single join column is assumed and the default values apply. Example: @ManyToOne @JoinColumn(name="ADDR_ID") public Address getAddress() { return address; } Example |
2 | javax.persistence.SecondaryTable of the primary table. Example 1: Single secondary table with a single primary key column. @Entity ... =@PrimaryKeyJoinColumn(name="CUST_ID")) public class Customer { ... } Example 2: Single secondary table |
2 | javax.persistence.AssociationOverride must be specified to override the mapping of the join table and/or its join columns. Example 1: Overriding ... public class PartTimeEmployee extends Employee { ... } Example 2: Overriding the mapping |
2 | javax.persistence.MapKey. Example 1: @Entity public class Department { ... @OneToMany(mappedBy ... getDepartment() { ... } ... } Example 2: @Entity public class Department |
2 | javax.persistence.SecondaryTablesjavax.persistence Annotation SecondaryTables Target: Classes Specifies multiple secondary tables for an entity. Example 1: Multiple secondary tables assuming primary key columns are named the same in ... { ... } Example 2: Multiple secondary tables with differently named primary key columns. @Entity |
0 | javax.jdo.Query declaring an expression (for example, e1 != e2). Rules for constructing valid expressions follow ... with a leading ":". For example, setRange("50, 70"); or setRange(":from, :to"); or setRange("50 |
0 | javax.jdo.spi.JDOImplHelper a call to the field manager for each key field in the ObjectId. For example, an ObjectId class ... the ObjectId. For example, an ObjectId class that has three key fields (int id, String name |
