org.openmrs.util.databasechange.UpdateCohortMemberIds.java Source code

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Here is the source code for org.openmrs.util.databasechange.UpdateCohortMemberIds.java

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/**
 * This Source Code Form is subject to the terms of the Mozilla Public License,
 * v. 2.0. If a copy of the MPL was not distributed with this file, You can
 * obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
 * the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
 *
 * Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
 * graphic logo is a trademark of OpenMRS Inc.
 */
package org.openmrs.util.databasechange;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import liquibase.change.custom.CustomTaskChange;
import liquibase.database.Database;
import liquibase.database.jvm.JdbcConnection;
import liquibase.exception.CustomChangeException;
import liquibase.exception.DatabaseException;
import liquibase.exception.SetupException;
import liquibase.exception.ValidationErrors;
import liquibase.resource.ResourceAccessor;

/**
 * This change set is run to update cohort member ids
 */
public class UpdateCohortMemberIds implements CustomTaskChange {

    private final static Log log = LogFactory.getLog(UpdateCohortMemberIds.class);

    /**
     * @see CustomTaskChange#execute(Database)
     */
    @Override
    public void execute(Database database) throws CustomChangeException {
        JdbcConnection connection = (JdbcConnection) database.getConnection();
        Statement stmt = null;
        PreparedStatement pStmt = null;

        try {
            stmt = connection.createStatement();
            ResultSet rs = stmt.executeQuery("SELECT * FROM cohort_member");

            pStmt = connection.prepareStatement(
                    "UPDATE cohort_member SET cohort_member_id = ?" + " WHERE cohort_id = ? AND patient_id = ?");
            int i = 0;
            while (rs.next()) {
                int cohortId = rs.getInt("cohort_id");
                int patientId = rs.getInt("patient_id");
                pStmt.setInt(1, ++i);
                pStmt.setInt(2, cohortId);
                pStmt.setInt(3, patientId);
                pStmt.addBatch();
            }
            pStmt.executeBatch();
        } catch (DatabaseException | SQLException e) {
            log.warn("Error generated", e);
        } finally {
            if (stmt != null) {
                try {
                    stmt.close();
                } catch (SQLException e) {
                    log.warn("Failed to close the statement object");
                }
            }

            if (pStmt != null) {
                try {
                    pStmt.close();
                } catch (SQLException e) {
                    log.warn("Failed to close the prepared statement object");
                }
            }
        }
    }

    /**
     * @see liquibase.change.custom.CustomChange#getConfirmationMessage()
     */
    @Override
    public String getConfirmationMessage() {
        return "Finished updating cohort member ids";
    }

    /**
     * @see liquibase.change.custom.CustomChange#setUp()
     */
    @Override
    public void setUp() throws SetupException {
    }

    /**
     * @see liquibase.change.custom.CustomChange#setFileOpener(ResourceAccessor)
     */
    @Override
    public void setFileOpener(ResourceAccessor resourceAccessor) {
    }

    /**
     * @see liquibase.change.custom.CustomChange#validate(Database)
     */
    @Override
    public ValidationErrors validate(Database database) {
        return null;
    }
}