How to use

BaseResourceIndex

in

ca.uhn.fhir.jpa.model.entity

public void calculateHashes(Collection<? extends BaseResourceIndex> theStringParams) {
  for (BaseResourceIndex next : theStringParams) {
    next.calculateHashes();
  }
}

/**
 * The logic here is that often times when we update a resource we are dropping
 * one index row and adding another. This method tries to reuse rows that would otherwise
 * have been deleted by updating them with the contents of rows that would have
 * otherwise been added. In other words, we're trying to replace
 * "one delete + one insert" with "one update"
 *
 * @param theIndexesToRemove The rows that would be removed
 * @param theIndexesToAdd The rows that would be added
 */
private <T extends BaseResourceIndex> void tryToReuseIndexEntities(List<T> theIndexesToRemove, List<T> theIndexesToAdd) {
  for (int addIndex = 0; addIndex < theIndexesToAdd.size(); addIndex++) {
    // If there are no more rows to remove, there's nothing we can reuse
    if (theIndexesToRemove.isEmpty()) {
      break;
    }
    T targetEntity = theIndexesToAdd.get(addIndex);
    if (targetEntity.getId() != null) {
      continue;
    }
    // Take a row we were going to remove, and repurpose its ID
    T entityToReuse = theIndexesToRemove.remove(theIndexesToRemove.size() - 1);
    targetEntity.setId(entityToReuse.getId());
  }
}

/**
 * The logic here is that often times when we update a resource we are dropping
 * one index row and adding another. This method tries to reuse rows that would otherwise
 * have been deleted by updating them with the contents of rows that would have
 * otherwise been added. In other words, we're trying to replace
 * "one delete + one insert" with "one update"
 *
 * @param theIndexesToRemove The rows that would be removed
 * @param theIndexesToAdd The rows that would be added
 */
private <T extends BaseResourceIndex> void tryToReuseIndexEntities(List<T> theIndexesToRemove, List<T> theIndexesToAdd) {
  for (int addIndex = 0; addIndex < theIndexesToAdd.size(); addIndex++) {
    // If there are no more rows to remove, there's nothing we can reuse
    if (theIndexesToRemove.isEmpty()) {
      break;
    }
    T targetEntity = theIndexesToAdd.get(addIndex);
    if (targetEntity.getId() != null) {
      continue;
    }
    // Take a row we were going to remove, and repurpose its ID
    T entityToReuse = theIndexesToRemove.remove(theIndexesToRemove.size() - 1);
    targetEntity.setId(entityToReuse.getId());
  }
}