Mercurial > hg > LightPIT / file revision

 /*

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  * Copyright 2018 Mike Becker. All rights reserved.

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 package de.uapcore.lightpit.dao.postgres;

 import de.uapcore.lightpit.dao.IssueDao;

 import de.uapcore.lightpit.entities.*;

 import java.sql.Connection;

 import java.sql.PreparedStatement;

 import java.sql.ResultSet;

 import java.sql.SQLException;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Objects;

 import static de.uapcore.lightpit.dao.Functions.*;

 public final class PGIssueDao implements IssueDao {

     private final PreparedStatement insert, update, list, find, affectedVersions, scheduledVersions, resolvedVersions;

     public PGIssueDao(Connection connection) throws SQLException {

         list = connection.prepareStatement(

                 "select issueid, project, status, category, subject, description, " +

                         "userid, username, givenname, lastname, mail, " +

                         "created, updated, eta " +

                         "from lpit_issue " +

                         "left join lpit_user on userid = assignee " +

                         "where project = ? ");

         find = connection.prepareStatement(

                 "select issueid, project, status, category, subject, description, " +

                         "userid, username, givenname, lastname, mail, " +

                         "created, updated, eta " +

                         "from lpit_issue " +

                         "left join lpit_user on userid = assignee " +

                         "where issueid = ? ");

         insert = connection.prepareStatement(

                 "insert into lpit_issue (project, status, category, subject, description, assignee, eta) " +

                         "values (?, ?::issue_status, ?::issue_category, ?, ?, ?, ?) returning issueid"

         );

         update = connection.prepareStatement(

                 "update lpit_issue set updated = now(), status = ?::issue_status, category = ?::issue_category, " +

                         "subject = ?, description = ?, assignee = ?, eta = ? where issueid = ?"

         );

         affectedVersions = connection.prepareStatement(

                 "select v.versionid, v.name, v.status, v.ordinal " +

                         "from lpit_version v join lpit_issue_affected_version using (versionid) " +

                         "where issueid = ? " +

                         "order by v.ordinal, v.name"

         );

         scheduledVersions = connection.prepareStatement(

                 "select v.versionid, v.name, v.status, v.ordinal " +

                         "from lpit_version v join lpit_issue_scheduled_version using (versionid) " +

                         "where issueid = ? " +

                         "order by v.ordinal, v.name"

         );

         resolvedVersions = connection.prepareStatement(

                 "select v.versionid, v.name, v.status, v.ordinal " +

                         "from lpit_version v join lpit_issue_resolved_version using (versionid) " +

                         "where issueid = ? " +

                         "order by v.ordinal, v.name"

         );

     }

     private User obtainAssignee(ResultSet result) throws SQLException {

         final int id = result.getInt("userid");

         if (id != 0) {

             final var user = new User(id);

             user.setUsername(result.getString("username"));

             user.setGivenname(result.getString("givenname"));

             user.setLastname(result.getString("lastname"));

             user.setMail(result.getString("mail"));

             return user;

         } else {

             return null;

         }

     }

     private Issue mapColumns(ResultSet result) throws SQLException {

         final var project = new Project(result.getInt("project"));

         final var issue = new Issue(result.getInt("issueid"), project);

         issue.setStatus(IssueStatus.valueOf(result.getString("status")));

         issue.setCategory(IssueCategory.valueOf(result.getString("category")));

         issue.setSubject(result.getString("subject"));

         issue.setDescription(result.getString("description"));

         issue.setAssignee(obtainAssignee(result));

         issue.setCreated(result.getTimestamp("created"));

         issue.setUpdated(result.getTimestamp("updated"));

         issue.setEta(result.getDate("eta"));

         return issue;

     }

     private Version mapVersion(ResultSet result, Project project) throws SQLException {

         final var version = new Version(result.getInt("v.versionid"), project);

         version.setName(result.getString("v.name"));

         version.setOrdinal(result.getInt("v.ordinal"));

         version.setStatus(VersionStatus.valueOf(result.getString("v.status")));

         return version;

     }

     @Override

     public void save(Issue instance) throws SQLException {

         Objects.requireNonNull(instance.getSubject());

         Objects.requireNonNull(instance.getProject());

         insert.setInt(1, instance.getProject().getId());

         insert.setString(2, instance.getStatus().name());

         insert.setString(3, instance.getCategory().name());

         insert.setString(4, instance.getSubject());

         setStringOrNull(insert, 5, instance.getDescription());

         setForeignKeyOrNull(insert, 6, instance.getAssignee(), User::getId);

         setDateOrNull(insert, 7, instance.getEta());

         // insert and retrieve the ID

         final var rs = insert.executeQuery();

         rs.next();

         instance.setId(rs.getInt(1));

     }

     @Override

     public boolean update(Issue instance) throws SQLException {

         if (instance.getId() < 0) return false;

         Objects.requireNonNull(instance.getSubject());

         update.setString(1, instance.getStatus().name());

         update.setString(2, instance.getCategory().name());

         update.setString(3, instance.getSubject());

         setStringOrNull(update, 4, instance.getDescription());

         setForeignKeyOrNull(update, 5, instance.getAssignee(), User::getId);

         setDateOrNull(update, 6, instance.getEta());

         update.setInt(7, instance.getId());

         return update.executeUpdate() > 0;

     }

     @Override

     public List<Issue> list(Project project) throws SQLException {

         list.setInt(1, project.getId());

         List<Issue> issues = new ArrayList<>();

         try (var result = list.executeQuery()) {

             while (result.next()) {

                 issues.add(mapColumns(result));

             }

         }

         return issues;

     }

     @Override

     public Issue find(int id) throws SQLException {

         find.setInt(1, id);

         try (var result = find.executeQuery()) {

             if (result.next()) {

                 return mapColumns(result);

             } else {

                 return null;

             }

         }

     }

     private List<Version> listVersions(PreparedStatement stmt, Issue issue) throws SQLException {

         stmt.setInt(1, issue.getId());

         List<Version> versions = new ArrayList<>();

         try (var result = stmt.executeQuery()) {

             while (result.next()) {

                 versions.add(mapVersion(result, issue.getProject()));

             }

         }

         return versions;

     }

     @Override

     public void joinVersionInformation(Issue issue) throws SQLException {

         Objects.requireNonNull(issue.getProject());

         issue.setAffectedVersions(listVersions(affectedVersions, issue));

         issue.setScheduledVersions(listVersions(scheduledVersions, issue));

         issue.setResolvedVersions(listVersions(resolvedVersions, issue));

     }

 }