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.VersionDao;

 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;

 public final class PGVersionDao implements VersionDao {

     private final PreparedStatement insert, update, list, find;

     private final PreparedStatement issuesAffected, issuesScheduled, issuesResolved;

     public PGVersionDao(Connection connection) throws SQLException {

         list = connection.prepareStatement(

                 "select versionid, project, name, ordinal, status " +

                         "from lpit_version " +

                         "where project = ? " +

                         "order by ordinal desc, lower(name) desc");

         find = connection.prepareStatement(

                 "select versionid, project, name, ordinal, status " +

                         "from lpit_version " +

                         "where versionid = ?");

         insert = connection.prepareStatement(

                 "insert into lpit_version (project, name, ordinal, status) values (?, ?, ?, ?::version_status)"

         );

         update = connection.prepareStatement(

                 "update lpit_version set name = ?, ordinal = ?, status = ?::version_status where versionid = ?"

         );

         issuesAffected = connection.prepareStatement(

                 "select category, status, count(*) as issuecount " +

                         "from lpit_issue_affected_version " +

                         "join lpit_issue using (issueid) " +

                         "where versionid = ? " +

                         "group by category, status"

         );

         issuesScheduled = connection.prepareStatement(

                 "select category, status, count(*) as issuecount " +

                         "from lpit_issue_scheduled_version " +

                         "join lpit_issue using (issueid) " +

                         "where versionid = ? " +

                         "group by category, status"

         );

         issuesResolved = connection.prepareStatement(

                 "select category, status, count(*) as issuecount " +

                         "from lpit_issue_resolved_version " +

                         "join lpit_issue using (issueid) " +

                         "where versionid = ? " +

                         "group by category, status"

         );

     }

     private Version mapColumns(ResultSet result) throws SQLException {

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

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

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

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

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

         return version;

     }

     private VersionStatistics versionStatistics(Version version, PreparedStatement stmt) throws SQLException {

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

         final var result = stmt.executeQuery();

         final var stats = new VersionStatistics(version);

         while (result.next()) {

             stats.setIssueCount(

                     IssueCategory.valueOf(result.getString("category")),

                     IssueStatus.valueOf(result.getString("status")),

                     result.getInt("issuecount")

             );

         }

         return stats;

     }

     @Override

     public void save(Version instance) throws SQLException {

         Objects.requireNonNull(instance.getName());

         Objects.requireNonNull(instance.getProject());

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

         insert.setString(2, instance.getName());

         insert.setInt(3, instance.getOrdinal());

         insert.setString(4, instance.getStatus().name());

         insert.executeUpdate();

     }

     @Override

     public boolean update(Version instance) throws SQLException {

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

         Objects.requireNonNull(instance.getName());

         update.setString(1, instance.getName());

         update.setInt(2, instance.getOrdinal());

         update.setString(3, instance.getStatus().name());

         update.setInt(4, instance.getId());

         return update.executeUpdate() > 0;

     }

     @Override

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

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

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

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

             while (result.next()) {

                 final var v = mapColumns(result);

                 v.setProject(project);

                 versions.add(v);

             }

         }

         return versions;

     }

     @Override

     public Version find(int id) throws SQLException {

         find.setInt(1, id);

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

             if (result.next()) {

                 return mapColumns(result);

             } else {

                 return null;

             }

         }

     }

     @Override

     public VersionStatistics statsOpenedIssues(Version version) throws SQLException {

         return versionStatistics(version, issuesAffected);

     }

     @Override

     public VersionStatistics statsScheduledIssues(Version version) throws SQLException {

         return versionStatistics(version, issuesScheduled);

     }

     @Override

     public VersionStatistics statsResolvedIssues(Version version) throws SQLException {

         return versionStatistics(version, issuesResolved);

     }

 }