Java tutorial
package com.che.software.testato.domain.dao.jdbc.impl; import java.sql.Connection; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import org.apache.commons.dbutils.DbUtils; import org.apache.commons.dbutils.handlers.BeanListHandler; import org.apache.commons.dbutils.handlers.ScalarHandler; import org.apache.log4j.Logger; import org.springframework.stereotype.Repository; import com.che.software.testato.domain.dao.IIterationDAO; import com.che.software.testato.domain.dao.jdbc.adao.AbstractDAO; import com.che.software.testato.domain.dao.jdbc.exception.IterationCreationDAOException; import com.che.software.testato.domain.dao.jdbc.exception.IterationSearchDAOException; import com.che.software.testato.domain.dao.jdbc.exception.IterationUpdateDAOException; import com.che.software.testato.domain.entity.Iteration; import com.che.software.testato.domain.entity.Prioritization; import com.che.software.testato.domain.entity.Script; import com.che.software.testato.domain.entity.search.IterationSearch; import com.che.software.testato.domain.enumeration.AssignmentStatus; import com.che.software.testato.domain.enumeration.CriterionTypes; /** * JDBC implementation of the DAO interface dedicated to the iterations * management. * * @author Clement HELIOU (clement.heliou@che-software.com). * @copyright Che Software. * @license GNU General Public License. * @see AbstractDAO, IIterationDAO. * @since July, 2011. * * This file is part of Testato. * * Testato is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation, either version 3 of the License, or (at your * option) any later version. * * Testato is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License * along with Testato. If not, see <http://www.gnu.org/licenses/>. * * Testato's logo is a creation of Arrioch * (http://arrioch.deviantart.com/) and it's distributed under the terms * of the Creative Commons License. */ @Repository("iterationDAO") public class IterationDAO extends AbstractDAO implements IIterationDAO { /** * Constants. */ private static final Logger LOGGER = Logger.getLogger(IterationDAO.class); /** * Creates the next iteration (both analytical and selective) for a given * prioritization. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param prioritization the given prioritization. * @param scripts the scripts to use for this depth. * @since July, 2011. * @throws IterationCreationDAOException if an error occurs during the * creation. */ @Override public void createNextIteration(Prioritization prioritization, List<Script> scripts) throws IterationCreationDAOException { LOGGER.debug("createNextIteration(" + prioritization.getPrioritizationId() + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); connection.setAutoCommit(false); getQueryRunner().update(connection, "INSERT INTO iteration(iteration_id, prioritization_id) VALUES(nextval('iteration_seq'), ?) ", new Object[] { prioritization.getPrioritizationId() }); Integer createdIterationId = (Integer) getQueryRunner().query(connection, "SELECT MAX(iteration_id)::int AS iterationId FROM iteration ", new ScalarHandler("iterationId")); getQueryRunner().update(connection, "INSERT INTO iteration_assignment(iteration_assignment_id, criterion_type, iteration_id, analytical_prioritization_status) VALUES(nextval('iteration_assignment_seq'), ?, ?, ?) ", new Object[] { CriterionTypes.COST.name(), createdIterationId, AssignmentStatus.NOT_ASSIGNED.name() }); createComparisonMatrixItem(connection, scripts, (Integer) getQueryRunner().query(connection, "SELECT MAX(iteration_assignment_id)::int AS result FROM iteration_assignment ", new ScalarHandler("result"))); getQueryRunner().update(connection, "INSERT INTO iteration_assignment(iteration_assignment_id, criterion_type, iteration_id, analytical_prioritization_status) VALUES(nextval('iteration_assignment_seq'), ?, ?, ?) ", new Object[] { CriterionTypes.FIT.name(), createdIterationId, AssignmentStatus.NOT_ASSIGNED.name() }); createComparisonMatrixItem(connection, scripts, (Integer) getQueryRunner().query(connection, "SELECT MAX(iteration_assignment_id)::int AS result FROM iteration_assignment ", new ScalarHandler("result"))); getQueryRunner().update(connection, "INSERT INTO iteration_assignment(iteration_assignment_id, criterion_type, iteration_id, analytical_prioritization_status) VALUES(nextval('iteration_assignment_seq'), ?, ?, ?) ", new Object[] { CriterionTypes.RISK.name(), createdIterationId, AssignmentStatus.NOT_ASSIGNED.name() }); createComparisonMatrixItem(connection, scripts, (Integer) getQueryRunner().query(connection, "SELECT MAX(iteration_assignment_id)::int AS result FROM iteration_assignment ", new ScalarHandler("result"))); getQueryRunner().update(connection, "INSERT INTO iteration_assignment(iteration_assignment_id, criterion_type, iteration_id, analytical_prioritization_status) VALUES(nextval('iteration_assignment_seq'), ?, ?, ?) ", new Object[] { CriterionTypes.VALUE.name(), createdIterationId, AssignmentStatus.NOT_ASSIGNED.name() }); createComparisonMatrixItem(connection, scripts, (Integer) getQueryRunner().query(connection, "SELECT MAX(iteration_assignment_id)::int AS result FROM iteration_assignment ", new ScalarHandler("result"))); getQueryRunner().update(connection, "INSERT INTO iteration_assignment(iteration_assignment_id, iteration_id, selective_prioritization_status) VALUES(nextval('iteration_assignment_seq'), ?, ?) ", new Object[] { createdIterationId, AssignmentStatus.NOT_ASSIGNED.name() }); connection.commit(); } catch (SQLException e) { try { connection.rollback(); } catch (SQLException e1) { throw new IterationCreationDAOException(e1); } throw new IterationCreationDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Retrieves the current iteration to process for a given prioritization. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param prioritization the given prioritization. * @return the current iteration to process id. * @since July, 2011. * @throws IterationSearchDAOException if an error occurs during the search. */ @Override public int getCurrentIterationFromPrioritization(Prioritization prioritization) throws IterationSearchDAOException { LOGGER.debug("getCurrentIterationFromPrioritization(" + prioritization + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); return (Integer) getQueryRunner().query(connection, "SELECT COALESCE(MAX(iteration_id),0)::int AS iterationId FROM iteration WHERE prioritization_id = ? ", new ScalarHandler("iterationId"), new Object[] { prioritization.getPrioritizationId() }); } catch (SQLException e) { throw new IterationSearchDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Retrieves the remaining scripts count for a given prioritization. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param prioritization the given prioritization. * @return the resulting count. * @since July, 2011. * @throws IterationSearchDAOException if an error occurs during the search. */ @Override public int getRemainingScriptsCountFromPrioritization(Prioritization prioritization) throws IterationSearchDAOException { LOGGER.debug("getRemainingScriptsCountFromPrioritization(" + prioritization.getPrioritizationId() + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); return (Integer) getQueryRunner().query(connection, "SELECT COALESCE(((MAX(depth)-MIN(depth))+1),0)::int AS result FROM script WHERE hierarchy_id = ? AND NOT EXISTS( SELECT iteration_assignment_id FROM comparisonMatrixItem WHERE first_script = script_id ) ", new ScalarHandler("result"), new Object[] { prioritization.getHierarchyId() }); } catch (SQLException e) { throw new IterationSearchDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Retrieves the scripts count for a given iteration. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param iterationId the given iteration id. * @return the resulting scripts count. * @since July, 2011. * @throws IterationSearchDAOException if an error occurs during a search. */ @Override public int getScriptsCountFromIteration(int iterationId) throws IterationSearchDAOException { LOGGER.debug("getScriptsCountFromIteration(" + iterationId + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); return (Integer) getQueryRunner().query(connection, "SELECT COUNT(DISTINCT(script_id))::int AS result FROM script JOIN comparisonMatrixItem ON(first_script = script_id) JOIN iteration_assignment USING(iteration_assignment_id) WHERE iteration_id = ? ", new ScalarHandler("result"), new Object[] { iterationId }); } catch (SQLException e) { throw new IterationSearchDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Checks if an iteration is completed. In other words, checks if the * related comparison matrix has been prioritized. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param iterationId the given iteration id. * @return true if the iteration is ended, else false. * @since August, 2011. * @throws IterationSearchDAOException if an error occurs during the search. */ @Override public boolean isIterationCompleted(int iterationId) throws IterationSearchDAOException { LOGGER.debug("isIterationCompleted(" + iterationId + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); return (Boolean) getQueryRunner().query(connection, "SELECT EXISTS( SELECT iteration_assignment_id FROM iteration_assignment WHERE analytical_prioritization_status = 'ENDED' AND iteration_assignment_id = ?) AS result ", new ScalarHandler("result"), new Object[] { iterationId }); } catch (SQLException e) { throw new IterationSearchDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Iteration search from a bean of criterions. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param searchBean the criterions to use for the search. * @return the resulting object list. * @since July, 2011. * @throws IterationSearchDAOException if an error occurs during the search. */ @Override public List<Iteration> searchIteration(IterationSearch searchBean) throws IterationSearchDAOException { LOGGER.debug("searchIteration()."); Connection connection = null; try { connection = getDataSource().getConnection(); List<Object> params = new ArrayList<Object>(); return getQueryRunner().query(connection, getIterationSearchQueryFromCriterion(searchBean, params), new BeanListHandler<Iteration>(Iteration.class), params.toArray()); } catch (SQLException e) { throw new IterationSearchDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Updates an iteration from his object. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param iterationToUpdate the iteration object to update in the database. * @since July, 2011. * @throws IterationUpdateDAOException if an error occurs during the update. */ @Override public void updateIteration(Iteration iterationToUpdate) throws IterationUpdateDAOException { LOGGER.debug("updateIteration(" + iterationToUpdate.getIterationAssignmentId() + ")."); Connection connection = null; try { connection = getDataSource().getConnection(); List<Object> params = new ArrayList<Object>(); getQueryRunner().update(connection, getIterationUpdateQueryFromCriterion(iterationToUpdate, params), params.toArray()); } catch (SQLException e) { throw new IterationUpdateDAOException(e); } finally { if (null != connection) { DbUtils.closeQuietly(connection); } } } /** * Creates the comparison matrix items for a given iteration assignment. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param connection the connection to use. * @param scripts the scripts to use to build the matrix. * @param iterationAssigmentId the given iteration assignment id. * @since July, 2011. * @throws SQLException if an error occurs during the database process. */ private void createComparisonMatrixItem(Connection connection, List<Script> scripts, int iterationAssigmentId) throws SQLException { LOGGER.debug("createComparisonMatrixItem(" + iterationAssigmentId + "," + scripts + ")."); for (Script script : scripts) { for (Script otherScript : scripts) { getQueryRunner().update(connection, "INSERT INTO comparisonMatrixItem(iteration_assignment_id, first_script, second_script, comparison_matrix_item, value) VALUES(?, ?, ?, nextval('comparison_matrix_item_seq'), ?) ", new Object[] { iterationAssigmentId, script.getScriptId(), otherScript.getScriptId(), (script.getScriptId().equals(otherScript.getScriptId())) ? 1 : null }); } } } /** * Recovery of the iteration search query from criterion. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param searchBean the object containing the criterions. * @param params the parameters list corresponding to the built query. * @return the built query. * @since July, 2011. */ private String getIterationSearchQueryFromCriterion(IterationSearch searchBean, List<Object> params) { LOGGER.debug("getIterationSearchQueryFromCriterion()."); setWhereClauseEnabled(false); StringBuilder sBuilder = new StringBuilder( "SELECT iteration_id AS iterationId, iteration_assignment_id AS iterationAssignmentId, criterion_type AS criterionStringType, selection_type AS selectionStringType, service_id AS serviceId, selective_prioritization_status AS selectiveStringStatus, analytical_prioritization_status AS analyticalStringStatus, consistency_index AS consistencyIndex, version_id AS versionId FROM iteration_assignment JOIN iteration USING(iteration_id) JOIN hierarchy_prioritization USING(prioritization_id) JOIN hierarchy_version USING(hierarchy_id) "); if (null != searchBean && null != searchBean.getScriptId()) { sBuilder.append("JOIN iteration_assignment_source_script USING(iteration_assignment_id) "); } if (null != searchBean && null != searchBean.getIterationId() && 0 != searchBean.getIterationId()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("iteration_id = ? "); params.add(searchBean.getIterationId()); } if (null != searchBean && null != searchBean.getScriptId()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("script_id = ? "); params.add(searchBean.getScriptId()); } if (null != searchBean && null != searchBean.getIterationAssignmentId() && 0 != searchBean.getIterationAssignmentId()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("iteration_assignment_id = ? "); params.add(searchBean.getIterationAssignmentId()); } if (null != searchBean && null != searchBean.getServiceId() && 0 != searchBean.getServiceId()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("service_id = ? "); params.add(searchBean.getServiceId()); } if (null != searchBean && null != searchBean.getAnalyticalStatus()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("analytical_prioritization_status = ? "); params.add(searchBean.getAnalyticalStatus().name()); } if (null != searchBean && null != searchBean.getSelectiveStatus()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("selective_prioritization_status = ? "); params.add(searchBean.getSelectiveStatus().name()); } if (null != searchBean && null != searchBean.getAnalyticalNotEnded() && true == searchBean.getAnalyticalNotEnded()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("analytical_prioritization_status != ? "); params.add(AssignmentStatus.ENDED.name()); } if (null != searchBean && null != searchBean.getSelectiveStatusNull() && true == searchBean.getSelectiveStatusNull()) { sBuilder.append(getWhereClauseBegin()); sBuilder.append("selective_prioritization_status IS NULL "); } return sBuilder.toString(); } /** * Recovery of the iteration update query from criterion. * * @author Clement HELIOU (clement.heliou@che-software.com). * @param iterationToUpdate the object containing the criterions. * @param params the parameters list corresponding to the built query. * @return the built query. * @since July, 2011. */ private String getIterationUpdateQueryFromCriterion(Iteration iterationToUpdate, List<Object> params) { LOGGER.debug("getIterationUpdateQueryFromCriterion()."); setSetClauseEnabled(false); StringBuilder sBuilder = new StringBuilder("UPDATE iteration_assignment "); if (null != iterationToUpdate && null != iterationToUpdate.getServiceId() && 0 != iterationToUpdate.getServiceId()) { sBuilder.append(getSetClauseBegin()); sBuilder.append("service_id = ? "); params.add(iterationToUpdate.getServiceId()); } if (null != iterationToUpdate && null != iterationToUpdate.getConsistencyIndex()) { sBuilder.append(getSetClauseBegin()); sBuilder.append("consistency_index = ? "); params.add(iterationToUpdate.getConsistencyIndex()); } if (null != iterationToUpdate && null != iterationToUpdate.getAnalyticalStatus()) { sBuilder.append(getSetClauseBegin()); sBuilder.append("analytical_prioritization_status = ? "); params.add(iterationToUpdate.getAnalyticalStatus().name()); } if (null != iterationToUpdate && null != iterationToUpdate.getSelectiveStatus()) { sBuilder.append(getSetClauseBegin()); sBuilder.append("selective_prioritization_status = ? "); params.add(iterationToUpdate.getSelectiveStatus().name()); } if (null != iterationToUpdate && null != iterationToUpdate.getSelectionType()) { sBuilder.append(getSetClauseBegin()); sBuilder.append("selection_type = ? "); params.add(iterationToUpdate.getSelectionType().name()); } sBuilder.append("WHERE iteration_assignment_id = ? "); params.add(iterationToUpdate.getIterationAssignmentId()); return sBuilder.toString(); } }