How to use

isForeignKeyRelationship

method

in

org.eclipse.persistence.eis.mappings.EISOneToManyMapping

/**
 * Return all the fields mapped by the mapping.
 */
protected Vector collectFields() {
  if (isForeignKeyRelationship()) {
    if (this.getForeignKeyGroupingElement() != null) {
      Vector fields = new Vector(1);
      fields.addElement(this.getForeignKeyGroupingElement());
      return fields;
    } else {
      return NO_FIELDS;
    }
  } else {
    return NO_FIELDS;
  }
}

/**
 * Return all the fields mapped by the mapping.
 */
@Override
protected Vector collectFields() {
  if (isForeignKeyRelationship()) {
    if (this.getForeignKeyGroupingElement() != null) {
      Vector fields = new Vector(1);
      fields.addElement(this.getForeignKeyGroupingElement());
      return fields;
    } else {
      return NO_FIELDS;
    }
  } else {
    return NO_FIELDS;
  }
}

/**
 * INTERNAL:
 * Compare the attributes belonging to this mapping for the objects.
 */
@Override
public boolean compareObjects(Object object1, Object object2, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    return (new EISOneToManyMappingHelper(this)).compareObjects(object1, object2, session);
  }
  return super.compareObjects(object1, object2, session);
}

/**
 * INTERNAL:
 * If the mapping has a foreign key, it is order, so must use a different merge.
 */
@Override
public void mergeIntoObject(Object target, boolean isTargetUnInitialized, Object source, MergeManager mergeManager, AbstractSession targetSession) {
  if (isForeignKeyRelationship()) {
    (new EISOneToManyMappingHelper(this)).mergeIntoObject(target, isTargetUnInitialized, source, mergeManager, targetSession);
    return;
  }
  super.mergeIntoObject(target, isTargetUnInitialized, source, mergeManager, targetSession);
}

/**
 * INTERNAL:
 * Compare the attributes belonging to this mapping for the objects.
 */
public boolean compareObjects(Object object1, Object object2, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    return (new EISOneToManyMappingHelper(this)).compareObjects(object1, object2, session);
  }
  return super.compareObjects(object1, object2, session);
}

/**
 * INTERNAL:
 * Compare the attributes belonging to this mapping for the objects.
 */
@Override
public boolean compareObjects(Object object1, Object object2, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    return (new EISOneToManyMappingHelper(this)).compareObjects(object1, object2, session);
  }
  return super.compareObjects(object1, object2, session);
}
 

/**
 * INTERNAL:
 * If the mapping has a foreign key, it is order, so must use a different merge.
 */
@Override
public void mergeChangesIntoObject(Object target, ChangeRecord chgRecord, Object source, MergeManager mergeManager, AbstractSession targetSession) {
  if (isForeignKeyRelationship()) {
    (new EISOneToManyMappingHelper(this)).mergeChangesIntoObject(target, chgRecord, source, mergeManager, targetSession);
    return;
  }
  super.mergeChangesIntoObject(target, chgRecord, source, mergeManager, targetSession);
}

/**
 * INTERNAL:
 * If the mapping has a foreign key, it is order, so must use a different merge.
 */
@Override
public void mergeIntoObject(Object target, boolean isTargetUnInitialized, Object source, MergeManager mergeManager, AbstractSession targetSession) {
  if (isForeignKeyRelationship()) {
    (new EISOneToManyMappingHelper(this)).mergeIntoObject(target, isTargetUnInitialized, source, mergeManager, targetSession);
    return;
  }
  super.mergeIntoObject(target, isTargetUnInitialized, source, mergeManager, targetSession);
}
   

/**
 * INTERNAL:
 * If the mapping has a foreign key, it is order, so must use a different merge.
 */
@Override
public void mergeChangesIntoObject(Object target, ChangeRecord chgRecord, Object source, MergeManager mergeManager, AbstractSession targetSession) {
  if (isForeignKeyRelationship()) {
    (new EISOneToManyMappingHelper(this)).mergeChangesIntoObject(target, chgRecord, source, mergeManager, targetSession);
    return;
  }
  super.mergeChangesIntoObject(target, chgRecord, source, mergeManager, targetSession);
}
 

/**
 * INTERNAL:
 * Get the appropriate attribute value from the object
 * and put it in the appropriate field of the database row.
 * Loop through the reference objects and extract the
 * primary keys and put them in the vector of "nested" rows.
 */
public void writeFromObjectIntoRowWithChangeRecord(ChangeRecord changeRecord, AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    Object object = ((ObjectChangeSet)changeRecord.getOwner()).getUnitOfWorkClone();
    this.writeFromObjectIntoRow(object, row, session);
  } else {
    super.writeFromObjectIntoRowWithChangeRecord(changeRecord, row, session);
  }
}

/**
 * INTERNAL:
 * Get the appropriate attribute value from the object
 * and put it in the appropriate field of the database row.
 * Loop through the reference objects and extract the
 * primary keys and put them in the vector of "nested" rows.
 */
@Override
public void writeFromObjectIntoRowWithChangeRecord(ChangeRecord changeRecord, AbstractRecord row, AbstractSession session, WriteType writeType) {
  if (isForeignKeyRelationship()) {
    Object object = ((ObjectChangeSet)changeRecord.getOwner()).getUnitOfWorkClone();
    this.writeFromObjectIntoRow(object, row, session, writeType);
  } else {
    super.writeFromObjectIntoRowWithChangeRecord(changeRecord, row, session, writeType);
  }
}

/**
 * INTERNAL:
 * Get the appropriate attribute value from the object
 * and put it in the appropriate field of the database row.
 * Loop through the reference objects and extract the
 * primary keys and put them in the vector of "nested" rows.
 */
@Override
public void writeFromObjectIntoRowWithChangeRecord(ChangeRecord changeRecord, AbstractRecord row, AbstractSession session, WriteType writeType) {
  if (isForeignKeyRelationship()) {
    Object object = ((ObjectChangeSet)changeRecord.getOwner()).getUnitOfWorkClone();
    this.writeFromObjectIntoRow(object, row, session, writeType);
  } else {
    super.writeFromObjectIntoRowWithChangeRecord(changeRecord, row, session, writeType);
  }
}

/**
 * INTERNAL:
 * Write fields needed for insert into the template for with null values.
 */
public void writeInsertFieldsIntoRow(AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeInsertFieldsIntoRow(row, session);
  }
}

/**
 * INTERNAL:
 * Write fields needed for insert into the template for with null values.
 */
@Override
public void writeInsertFieldsIntoRow(AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeInsertFieldsIntoRow(row, session);
  }
}

/**
 * INTERNAL:
 * This row is built for shallow insert which happens in case of bidirectional inserts.
 * The foreign keys must be set to null to avoid constraints.
 */
public void writeFromObjectIntoRowForShallowInsert(Object object, AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeFromObjectIntoRowForShallowInsert(object, row, session);
  }
}

/**
 * INTERNAL:
 * This row is built for shallow insert which happens in case of bidirectional inserts.
 * The foreign keys must be set to null to avoid constraints.
 */
@Override
public void writeFromObjectIntoRowForShallowInsert(Object object, AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeFromObjectIntoRowForShallowInsert(object, row, session);
  }
}

/**
 * INTERNAL:
 * Write fields needed for insert into the template for with null values.
 */
@Override
public void writeInsertFieldsIntoRow(AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeInsertFieldsIntoRow(row, session);
  }
}

/**
 * INTERNAL:
 * This row is built for shallow insert which happens in case of bidirectional inserts.
 * The foreign keys must be set to null to avoid constraints.
 */
public void writeFromObjectIntoRowForShallowInsertWithChangeRecord(ChangeRecord changeRecord, AbstractRecord row, AbstractSession session) {
  if (isForeignKeyRelationship() && !isReadOnly()) {
    if (getForeignKeyGroupingElement() != null) {
      row.put(getForeignKeyGroupingElement(), null);
    } else if (this.getSourceForeignKeyFields().size() > 0) {
      row.put(getSourceForeignKeyFields().get(0), null);
    }
  } else {
    super.writeFromObjectIntoRowForShallowInsertWithChangeRecord(changeRecord, row, session);
  }
}

/**
 * INTERNAL:
 * Compare the changes between two collections. Element comparisons are
 * made using identity and, when appropriate, the value of the element's key
 * for the Map container.
 */
@Override
public ChangeRecord compareForChange(Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    if ((this.getAttributeValueFromObject(clone) != null) && (!this.isAttributeValueInstantiatedOrChanged(clone))) {
      return null;// never instantiated - no changes to report
    }
    return (new EISOneToManyMappingHelper(this)).compareForChange(clone, backup, owner, session);
  } else {
    return super.compareForChange(clone, backup, owner, session);
  }
}

/**
 * INTERNAL:
 * Compare the changes between two collections. Element comparisons are
 * made using identity and, when appropriate, the value of the element's key
 * for the Map container.
 */
public ChangeRecord compareForChange(Object clone, Object backup, ObjectChangeSet owner, AbstractSession session) {
  if (isForeignKeyRelationship()) {
    if ((this.getAttributeValueFromObject(clone) != null) && (!this.isAttributeValueInstantiatedOrChanged(clone))) {
      return null;// never instantiated - no changes to report
    }
    return (new EISOneToManyMappingHelper(this)).compareForChange(clone, backup, owner, session);
  } else {
    return super.compareForChange(clone, backup, owner, session);
  }
}