com.ibm.pdq.annotation

Annotation Type JoinPoint

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@Target(value={METHOD,FIELD})


@Retention(value=RUNTIME)


public @interface JoinPoint

For queries against databases, specifies an array of zero or more @JoinColumn annotations. This annotation is the only way to activate Nested Query Bean support. If this annotation is coded with no @JoinColumn annotations the @Id annotation(s) of the nested bean is used to define the key of the nested bean. If this annotation is coded with one or more @JoinColumn annotations the @Id annotation(s) of the nested bean are ignored and the key of the nested bean is defined by the @JoinColumn annotations.

The following example illustrates how property-to-column mappings can be specified for nested beans by using @JoinPoint:

Example 1:

@JoinPoint( {
  @JoinColumn(name = "WORKDEPT", table = "EMPLOYEE", propertyName = "deptNo"),
  @JoinColumn(name = "EMPNO", table = "EMPLOYEE", propertyName = "employeeNumber") })
  public List<Employee> getDepartmentEmployees ()
  @{. . .}
Example 2:

@JoinPoint
  @JoinColumn(name = "WORKDEPT", table = "EMPLOYEE", propertyName = "deptNo"),
  @JoinColumn(name = "EMPNO", table = "EMPLOYEE", propertyName = "employeeNumber") })
  public List<Employee> getDepartmentEmployees ()
  @{. . .}

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Optional Element Summary

Modifier and Type	Optional Element and Description
String	columnPrefix An String to be prefixed to all the nested bean's properties (and column labels).
JoinColumn[]	joinCol An array of zero or more @JoinColumn annotations to apply to the nested bean's Property.
JoinColumn[]	value An array of zero or more @JoinColumn annotations to apply to the nested bean's Property.

Optional Element Detail

columnPrefix

public abstract String columnPrefix

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joinCol

public abstract JoinColumn[] joinCol

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value

public abstract JoinColumn[] value