ejava.jpa.examples.tuning.dao

Class MovieDAOImpl

java.lang.Object

ejava.jpa.examples.tuning.dao.MovieDAOImpl

public class MovieDAOImpl
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	MovieDAOImpl.DateParam
protected static class	MovieDAOImpl.Pair<T,U>
private class	MovieDAOImpl.QueryLogger<T>

Field Summary

Fields

Modifier and Type	Field and Description
private EntityManager	em
private static org.apache.commons.logging.Log	log

Constructor Summary

Constructors

Constructor and Description
MovieDAOImpl()

Method Summary

Modifier and Type	Method and Description
protected <T> MovieDAOImpl.QueryLogger<T>	createQuery(String jpaql, Class<T> resultClass) Helper method to log the JPAQL portion of the query.
int	getCastCountForMovie(String movieId)
Person	getKevinBacon() Returns a Person instance for the Kevin Bacon actor who played in Tremors.
List<String>	getKevinBaconMovieIds(Integer offset, Integer limit, String orderBy)
List<Object[]>	getMovieAndDirector(Integer offset, Integer limit, String orderBy)
Movie	getMovieById(String id)
Movie	getMovieByIdUnfetched(String id)
int	getMovieCastCountByDAO(String movieId)
int	getMovieCastCountByDAORelation(String movieId)
int	getMovieCastCountByDB(String movieId)
Movie	getMovieFetchedByIdFetched(String id)
List<Movie>	getMovies(Integer offset, Integer limit, String orderBy) Returns a bulk, unordered page of movies.
List<Movie>	getMoviesByLikeRole(String role, Integer offset, Integer limit, String orderBy)
List<Movie>	getMoviesByRatingLowerFunction(MovieRating rating, Integer offset, Integer limit) Returns an unordered page of movies matching the supplied rating -- but calling lower() on the DB value.
List<Movie>	getMoviesByRatingUpperFunction(MovieRating rating, Integer offset, Integer limit) Returns an unordered page of movies matching the supplied rating -- but calling upper() on the DB value.
List<Movie>	getMoviesByRatingValue(MovieRating rating, Integer offset, Integer limit, String orderBy) Returns an unordered page of movies matching the supplied rating -- without calling any function()s on the stored data.
List<Movie>	getMoviesByReleaseDate(Date releaseDate, Integer offset, Integer limit)
List<Movie>	getMoviesByReleaseDateAndRating(Date releaseDate, MovieRating rating, Integer offset, Integer limit)
List<Movie>	getMoviesByReleaseDateAndTitle(String title, Date releaseDate, Integer offset, Integer limit)
List<Movie>	getMoviesByRole(String role, Integer offset, Integer limit, String orderBy)
List<Movie>	getMoviesByTitleAndReleaseDate(String title, Date releaseDate, Integer offset, Integer limit)
List<Movie>	getMoviesByTitleAndReleaseDateAndRating(String title, Date releaseDate, MovieRating rating, Integer offset, Integer limit)
List<Movie>	getMoviesEqualsTitle(String title, Integer offset, Integer limit) Returns movies exactly matching the provided title.
protected MovieDAOImpl.Pair<Subquery<Movie>,Void>	getMoviesForPerson(AbstractQuery<String> parentQuery, Person person)
protected MovieDAOImpl.Pair<Subquery<Movie>,Join<Actor,Person>>	getMoviesForPersonIds(AbstractQuery<String> parentQuery)
List<Movie>	getMoviesLikeTitle(String title, Integer offset, Integer limit, String orderBy) Returns an unordered page of movies that have a title "like" the one passed in.
protected CriteriaQuery<Person>	getPeopleQuery(Person person, int steps)
protected CriteriaQuery<Person>	getPeopleQuery2(Person person, int steps)
protected MovieDAOImpl.Pair<Subquery<String>,Join<MovieRole,Movie>>	getPersonIdsInMovie(AbstractQuery<?> parentQuery)
List<String>	getRatingsByTitle(String title, Integer offset, Integer limit, String orderBy) Returns a list of ratings for movies that exactly match the provided title.
List<String>	getRatingsLikeTitle(String title, Integer offset, Integer limit, String orderBy) Returns ratings that match the title like criteria.
List<MovieRole>	getRolesByMovie(String title, Date releaseDate, Integer offset, Integer limit, String orderBy)
List<String>	getTitlesByRating(MovieRating rating, Integer offset, Integer limit) Returns an unordered page of titles that match a specified rating.
protected MovieDAOImpl.Pair<Subquery<String>,Join<MovieRole,Movie>>	nthRemoved(AbstractQuery<String> parentQuery, Path<Movie> parentTerm, Person person)
List<Person>	oneStepFromPerson0(Person p, Integer offset, Integer limit) Find people who are 1 step from Kevin Bacon.
Collection<Person>	oneStepFromPersonByDAO(Person p) Find people who are 1 step from Person.
Collection<Person>	oneStepFromPersonByDAO(Person p, Integer offset, Integer limit, String orderBy)
List<Person>	oneStepFromPersonByDB(Person p) Find people who are 1 step from Person.
List<Person>	oneStepFromPersonByDB(Person p, Integer offset, Integer limit, String orderBy)
void	setEntityManager(EntityManager em)
List<Person>	stepsFromPerson(Person person, int steps, Integer offset, Integer limit)
protected <T> MovieDAOImpl.QueryLogger<T>	withPaging(MovieDAOImpl.QueryLogger<T> query, Integer offset, Integer limit, String orderBy) Helper method to add paging parameters to a query

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

private static final org.apache.commons.logging.Log log

em

private EntityManager em

Constructor Detail

MovieDAOImpl

public MovieDAOImpl()

Method Detail

setEntityManager

public void setEntityManager(EntityManager em)

createQuery

protected <T> MovieDAOImpl.QueryLogger<T> createQuery(String jpaql,
                                                      Class<T> resultClass)

Helper method to log the JPAQL portion of the query.

Parameters:

jpaql -

resultClass -

Returns:

withPaging

protected <T> MovieDAOImpl.QueryLogger<T> withPaging(MovieDAOImpl.QueryLogger<T> query,
                                                     Integer offset,
                                                     Integer limit,
                                                     String orderBy)

Helper method to add paging parameters to a query

Parameters:

query -

offset -

limit -

Returns:

getKevinBacon

public Person getKevinBacon()

Returns a Person instance for the Kevin Bacon actor who played in Tremors.

Returns:

getKevinBaconMovieIds

public List<String> getKevinBaconMovieIds(Integer offset,
                                          Integer limit,
                                          String orderBy)

oneStepFromPerson0

public List<Person> oneStepFromPerson0(Person p,
                                       Integer offset,
                                       Integer limit)

Find people who are 1 step from Kevin Bacon.

Parameters:

p -

offset -

limit -

Returns:

oneStepFromPersonByDAO

public Collection<Person> oneStepFromPersonByDAO(Person p)

Find people who are 1 step from Person.

Parameters:

p -

offset -

limit -

orderBy -

Returns:

oneStepFromPersonByDAO

public Collection<Person> oneStepFromPersonByDAO(Person p,
                                                 Integer offset,
                                                 Integer limit,
                                                 String orderBy)

oneStepFromPersonByDB

public List<Person> oneStepFromPersonByDB(Person p)

Find people who are 1 step from Person.

Parameters:

p -

offset -

limit -

orderBy -

Returns:

oneStepFromPersonByDB

public List<Person> oneStepFromPersonByDB(Person p,
                                          Integer offset,
                                          Integer limit,
                                          String orderBy)

getMoviesForPerson

protected MovieDAOImpl.Pair<Subquery<Movie>,Void> getMoviesForPerson(AbstractQuery<String> parentQuery,
                                                                     Person person)

getMoviesForPersonIds

protected MovieDAOImpl.Pair<Subquery<Movie>,Join<Actor,Person>> getMoviesForPersonIds(AbstractQuery<String> parentQuery)

getPersonIdsInMovie

protected MovieDAOImpl.Pair<Subquery<String>,Join<MovieRole,Movie>> getPersonIdsInMovie(AbstractQuery<?> parentQuery)

nthRemoved

protected MovieDAOImpl.Pair<Subquery<String>,Join<MovieRole,Movie>> nthRemoved(AbstractQuery<String> parentQuery,
                                                                               Path<Movie> parentTerm,
                                                                               Person person)

getPeopleQuery2

protected CriteriaQuery<Person> getPeopleQuery2(Person person,
                                                int steps)

getPeopleQuery

protected CriteriaQuery<Person> getPeopleQuery(Person person,
                                               int steps)

stepsFromPerson

public List<Person> stepsFromPerson(Person person,
                                    int steps,
                                    Integer offset,
                                    Integer limit)

getMovies

public List<Movie> getMovies(Integer offset,
                             Integer limit,
                             String orderBy)

Returns a bulk, unordered page of movies. This will cause a full table scan since there is no reason to consult the index.

Parameters:

offset -

limit -

orderBy -

Returns:

getMoviesByRatingUpperFunction

public List<Movie> getMoviesByRatingUpperFunction(MovieRating rating,
                                                  Integer offset,
                                                  Integer limit)

Returns an unordered page of movies matching the supplied rating -- but calling upper() on the DB value. This will cause an index to be bypassed except for an upper() function index.

Parameters:

rating -

offset -

limit -

Returns:

getMoviesByRatingLowerFunction

public List<Movie> getMoviesByRatingLowerFunction(MovieRating rating,
                                                  Integer offset,
                                                  Integer limit)

Returns an unordered page of movies matching the supplied rating -- but calling lower() on the DB value. This will cause an index to be bypassed except for a lower() function index.

Parameters:

rating -

offset -

limit -

Returns:

getMoviesByRatingValue

public List<Movie> getMoviesByRatingValue(MovieRating rating,
                                          Integer offset,
                                          Integer limit,
                                          String orderBy)

Returns an unordered page of movies matching the supplied rating -- without calling any function()s on the stored data. If the column contains an index, it will be used.

Parameters:

rating -

offset -

limit -

orderBy -

Returns:

getMoviesLikeTitle

public List<Movie> getMoviesLikeTitle(String title,
                                      Integer offset,
                                      Integer limit,
                                      String orderBy)

Returns an unordered page of movies that have a title "like" the one passed in. Note the difference in index behavior when there is a wildcard at the beginning or end of the searched title

Parameters:

title -

offset -

limit -

orderBy -

Returns:

getMoviesEqualsTitle

public List<Movie> getMoviesEqualsTitle(String title,
                                        Integer offset,
                                        Integer limit)

Returns movies exactly matching the provided title.

Parameters:

title -

offset -

limit -

Returns:

getRatingsByTitle

public List<String> getRatingsByTitle(String title,
                                      Integer offset,
                                      Integer limit,
                                      String orderBy)

Returns a list of ratings for movies that exactly match the provided title.

Parameters:

title -

offset -

limit -

orderBy -

Returns:

getRatingsLikeTitle

public List<String> getRatingsLikeTitle(String title,
                                        Integer offset,
                                        Integer limit,
                                        String orderBy)

Returns ratings that match the title like criteria.

Parameters:

title -

offset -

limit -

orderBy -

Returns:

getTitlesByRating

public List<String> getTitlesByRating(MovieRating rating,
                                      Integer offset,
                                      Integer limit)

Returns an unordered page of titles that match a specified rating. This query will be impacted by a presence of an index on the rating column and the presence of the title column with the rating column as a part of a composite index.

Parameters:

rating -

offset -

limit -

Returns:

getMoviesByTitleAndReleaseDate

public List<Movie> getMoviesByTitleAndReleaseDate(String title,
                                                  Date releaseDate,
                                                  Integer offset,
                                                  Integer limit)

getMoviesByReleaseDateAndTitle

public List<Movie> getMoviesByReleaseDateAndTitle(String title,
                                                  Date releaseDate,
                                                  Integer offset,
                                                  Integer limit)

getMoviesByTitleAndReleaseDateAndRating

public List<Movie> getMoviesByTitleAndReleaseDateAndRating(String title,
                                                           Date releaseDate,
                                                           MovieRating rating,
                                                           Integer offset,
                                                           Integer limit)

getMoviesByReleaseDate

public List<Movie> getMoviesByReleaseDate(Date releaseDate,
                                          Integer offset,
                                          Integer limit)

getMoviesByReleaseDateAndRating

public List<Movie> getMoviesByReleaseDateAndRating(Date releaseDate,
                                                   MovieRating rating,
                                                   Integer offset,
                                                   Integer limit)

getMoviesByRole

public List<Movie> getMoviesByRole(String role,
                                   Integer offset,
                                   Integer limit,
                                   String orderBy)

getMoviesByLikeRole

public List<Movie> getMoviesByLikeRole(String role,
                                       Integer offset,
                                       Integer limit,
                                       String orderBy)

getRolesByMovie

public List<MovieRole> getRolesByMovie(String title,
                                       Date releaseDate,
                                       Integer offset,
                                       Integer limit,
                                       String orderBy)

getMovieById

public Movie getMovieById(String id)

getMovieByIdUnfetched

public Movie getMovieByIdUnfetched(String id)

getMovieFetchedByIdFetched

public Movie getMovieFetchedByIdFetched(String id)

getMovieCastCountByDAORelation

public int getMovieCastCountByDAORelation(String movieId)

getMovieCastCountByDAO

public int getMovieCastCountByDAO(String movieId)

getMovieCastCountByDB

public int getMovieCastCountByDB(String movieId)

getCastCountForMovie

public int getCastCountForMovie(String movieId)

getMovieAndDirector

public List<Object[]> getMovieAndDirector(Integer offset,
                                          Integer limit,
                                          String orderBy)