How to use

getSourceForeignKeysToTargetKeys

method

in

org.eclipse.persistence.eis.mappings.EISOneToManyMapping

/**
 * INTERNAL:
 * Clone the appropriate attributes.
 */
public Object clone() {
  EISOneToManyMapping clone = (EISOneToManyMapping)super.clone();
  clone.setSourceForeignKeysToTargetKeys((Map)((HashMap)getSourceForeignKeysToTargetKeys()).clone());
  return clone;
}

/**
 * INTERNAL:
 * Clone the appropriate attributes.
 */
@Override
public Object clone() {
  EISOneToManyMapping clone = (EISOneToManyMapping)super.clone();
  clone.setSourceForeignKeysToTargetKeys((Map)((HashMap)getSourceForeignKeysToTargetKeys()).clone());
  return clone;
}

/**
 * INTERNAL:
 * Clone the appropriate attributes.
 */
@Override
public Object clone() {
  EISOneToManyMapping clone = (EISOneToManyMapping)super.clone();
  clone.setSourceForeignKeysToTargetKeys((Map)((HashMap)getSourceForeignKeysToTargetKeys()).clone());
  return clone;
}

/**
 * INTERNAL:
 * Selection criteria is created with source foreign keys and target keys.
 * This criteria is then used to read target records from the table.
 *
 * CR#3922 - This method is almost the same as buildSelectionCriteria() the difference
 * is that getSelectionCriteria() is called
 */
protected void initializeSelectionCriteria(AbstractSession session) {
  if (this.getSourceForeignKeysToTargetKeys().isEmpty()) {
    throw DescriptorException.noForeignKeysAreSpecified(this);
  }
  Expression criteria;
  Expression builder = new ExpressionBuilder();
  Iterator keyIterator = getSourceForeignKeysToTargetKeys().keySet().iterator();
  while (keyIterator.hasNext()) {
    DatabaseField foreignKey = (DatabaseField)keyIterator.next();
    DatabaseField targetKey = getSourceForeignKeysToTargetKeys().get(foreignKey);
    Expression expression = builder.getField(targetKey).equal(builder.getParameter(foreignKey));
    criteria = expression.and(getSelectionCriteria());
    setSelectionCriteria(criteria);
  }
}

/**
 * INTERNAL:
 * Selection criteria is created with source foreign keys and target keys.
 * This criteria is then used to read target records from the table.
 *
 * CR#3922 - This method is almost the same as buildSelectionCriteria() the difference
 * is that getSelectionCriteria() is called
 */
protected void initializeSelectionCriteria(AbstractSession session) {
  if (this.getSourceForeignKeysToTargetKeys().isEmpty()) {
    throw DescriptorException.noForeignKeysAreSpecified(this);
  }
  Expression criteria;
  Expression builder = new ExpressionBuilder();
  Iterator keyIterator = getSourceForeignKeysToTargetKeys().keySet().iterator();
  while (keyIterator.hasNext()) {
    DatabaseField foreignKey = (DatabaseField)keyIterator.next();
    DatabaseField targetKey = getSourceForeignKeysToTargetKeys().get(foreignKey);
    Expression expression = builder.getField(targetKey).equal(builder.getParameter(foreignKey));
    criteria = expression.and(getSelectionCriteria());
    setSelectionCriteria(criteria);
  }
}

protected void initializeSourceForeignKeysToTargetKeys() throws DescriptorException {
  // Since we require a custom selection query, these keys are optional.
  if (getSourceForeignKeyFields().size() != getTargetForeignKeyFields().size()) {
    throw DescriptorException.sizeMismatchOfForeignKeys(this);
  }
  for (int i = 0; i < getTargetForeignKeyFields().size(); i++) {
    DatabaseField field = getReferenceDescriptor().buildField(getTargetForeignKeyFields().get(i));
    getTargetForeignKeyFields().set(i, field);
  }
  for (int i = 0; i < getSourceForeignKeyFields().size(); i++) {
    DatabaseField field = getDescriptor().buildField(getSourceForeignKeyFields().get(i));
    getSourceForeignKeyFields().set(i, field);
    getSourceForeignKeysToTargetKeys().put(field, getTargetForeignKeyFields().get(i));
  }
}

protected void initializeSourceForeignKeysToTargetKeys() throws DescriptorException {
  // Since we require a custom selection query, these keys are optional.
  if (getSourceForeignKeyFields().size() != getTargetForeignKeyFields().size()) {
    throw DescriptorException.sizeMismatchOfForeignKeys(this);
  }
  for (int i = 0; i < getTargetForeignKeyFields().size(); i++) {
    DatabaseField field = getReferenceDescriptor().buildField((DatabaseField)getTargetForeignKeyFields().get(i));
    getTargetForeignKeyFields().set(i, field);
  }
  for (int i = 0; i < getSourceForeignKeyFields().size(); i++) {
    DatabaseField field = getReferenceDescriptor().buildField((DatabaseField)getSourceForeignKeyFields().get(i));
    getSourceForeignKeyFields().set(i, field);
    getSourceForeignKeysToTargetKeys().put(field, getTargetForeignKeyFields().get(i));
  }
}

protected void initializeSourceForeignKeysToTargetKeys() throws DescriptorException {
  // Since we require a custom selection query, these keys are optional.
  if (getSourceForeignKeyFields().size() != getTargetForeignKeyFields().size()) {
    throw DescriptorException.sizeMismatchOfForeignKeys(this);
  }
  for (int i = 0; i < getTargetForeignKeyFields().size(); i++) {
    DatabaseField field = getReferenceDescriptor().buildField(getTargetForeignKeyFields().get(i));
    getTargetForeignKeyFields().set(i, field);
  }
  for (int i = 0; i < getSourceForeignKeyFields().size(); i++) {
    DatabaseField field = getDescriptor().buildField(getSourceForeignKeyFields().get(i));
    getSourceForeignKeyFields().set(i, field);
    getSourceForeignKeysToTargetKeys().put(field, getTargetForeignKeyFields().get(i));
  }
}

/**
 * Build and return a database row that contains a foreign key for the specified reference 
 * object.  This will be stored in the nested row(s).
 */
protected XMLRecord extractKeyRowFromReferenceObject(Object object, AbstractSession session, XMLRecord parentRecord) {
  Element newNode = XPathEngine.getInstance().createUnownedElement(parentRecord.getDOM(), getForeignKeyGroupingElement());
  XMLRecord result = new DOMRecord(newNode);
  result.setSession(session);
  for (int i = 0; i < this.getSourceForeignKeyFields().size(); i++) {
    DatabaseField fkField = (DatabaseField)getSourceForeignKeyFields().get(i);
    if (object == null) {
      result.add(fkField, null);
    } else {
      DatabaseField pkField = (DatabaseField)this.getSourceForeignKeysToTargetKeys().get(fkField);
      Object value = this.getReferenceDescriptor().getObjectBuilder().extractValueFromObjectForField(object, pkField, session);
      result.add(fkField, value);
    }
  }
  return result;
}

if (((getSourceForeignKeysToTargetKeys()) == null) || (getSourceForeignKeysToTargetKeys().size() == 0)) {
  return;
} else {
  DatabaseField singleField = getSourceForeignKeyFields().get(0);
  DatabaseField pkField = getSourceForeignKeysToTargetKeys().get(singleField);
  List foreignKeys = new ArrayList(cp.sizeFor(attributeValue));
  for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter);) {

if (((getSourceForeignKeysToTargetKeys()) == null) || (getSourceForeignKeysToTargetKeys().size() == 0)) {
  return;
} else {
  DatabaseField singleField = getSourceForeignKeyFields().get(0);
  DatabaseField pkField = getSourceForeignKeysToTargetKeys().get(singleField);
  List foreignKeys = new ArrayList(cp.sizeFor(attributeValue));
  for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter);) {

if (((getSourceForeignKeysToTargetKeys()) == null) || (getSourceForeignKeysToTargetKeys().size() == 0)) {
  return;
} else {
  DatabaseField singleField = (DatabaseField)getSourceForeignKeyFields().get(0);
  DatabaseField pkField = (DatabaseField)getSourceForeignKeysToTargetKeys().get(singleField);
  for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter);) {
    Object singleValue = getReferenceDescriptor().getObjectBuilder().extractValueFromObjectForField(cp.next(iter, session), pkField, session);

/**
 * INTERNAL:
 * Initialize the mapping.
 */
public void initialize(AbstractSession session) throws DescriptorException {
  super.initialize(session);
  if (!this.hasCustomSelectionQuery()) {
    throw DescriptorException.operationNotSupported("customSelectionQueryRequired");
  }
  if ((this.getForeignKeyGroupingElement() == null) && (this.getSourceForeignKeysToTargetKeys().size() > 1)) {
    throw EISException.groupingElementRequired();
  }
  if (this.getForeignKeyGroupingElement() != null) {
    DatabaseField field = this.getDescriptor().buildField(this.getForeignKeyGroupingElement());
    setForeignKeyGroupingElement((XMLField)field);
  }
  this.initializeSourceForeignKeysToTargetKeys();
  this.initializeDeleteAllQuery();
}

/**
 * INTERNAL:
 * Initialize the mapping.
 */
@Override
public void initialize(AbstractSession session) throws DescriptorException {
  super.initialize(session);
  if ((this.getForeignKeyGroupingElement() == null) && (this.getSourceForeignKeysToTargetKeys().size() > 1)) {
    throw EISException.groupingElementRequired();
  }
  if (this.getForeignKeyGroupingElement() != null) {
    DatabaseField field = this.getDescriptor().buildField(this.getForeignKeyGroupingElement());
    setForeignKeyGroupingElement(field);
  }
  this.initializeSourceForeignKeysToTargetKeys();
  if (shouldInitializeSelectionCriteria()) {
    initializeSelectionCriteria(session);
  }
  this.initializeDeleteAllQuery();
}

/**
 * INTERNAL:
 * Initialize the mapping.
 */
@Override
public void initialize(AbstractSession session) throws DescriptorException {
  super.initialize(session);
  if ((this.getForeignKeyGroupingElement() == null) && (this.getSourceForeignKeysToTargetKeys().size() > 1)) {
    throw EISException.groupingElementRequired();
  }
  if (this.getForeignKeyGroupingElement() != null) {
    DatabaseField field = this.getDescriptor().buildField(this.getForeignKeyGroupingElement());
    setForeignKeyGroupingElement(field);
  }
  this.initializeSourceForeignKeysToTargetKeys();
  
  if (shouldInitializeSelectionCriteria()) {
    initializeSelectionCriteria(session);
  }
  this.initializeDeleteAllQuery();
}