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/*
* Copyright (C) 2008-2023, Juick
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.service;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import javax.inject.Inject;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.sql.Types;
import java.time.Instant;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
/**
* Created by aalexeev on 11/13/16.
*/
public class BaseJdbcService {
@Inject
JdbcTemplate jdbcTemplate;
@Inject
NamedParameterJdbcTemplate namedParameterJdbcTemplate;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'sqlserver')}")
private boolean omitRecursiveKeyword;
@Value("#{('${spring.sql.init.platform}' == 'sqlite') or ('${spring.sql.init.platform}' == 'mysql')}")
// Added in MariaDB 10.6
private boolean haveNoANSIFetch;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'sqlite')}")
private boolean haveNoDates;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'sqlite')}")
private boolean haveNoGreatest;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'sqlite')}")
private boolean haveNoForUpdate;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'mysql')}")
private boolean haveNoOffsetDateTime;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'sqlserver')}")
private boolean haveOutput;
@Value("#{new Boolean('${spring.sql.init.platform}' == 'h2')}")
private boolean haveDeltaTables;
public NamedParameterJdbcTemplate getNamedParameterJdbcTemplate() {
return namedParameterJdbcTemplate;
}
public JdbcTemplate getJdbcTemplate() {
return jdbcTemplate;
}
public String withRecursive() {
return omitRecursiveKeyword ? "WITH" : "WITH RECURSIVE";
}
protected String limit(int rows) {
if (haveNoANSIFetch) {
return "LIMIT " + rows;
} else {
return "OFFSET 0 ROWS FETCH NEXT " + rows + " ROWS ONLY";
}
}
protected String greatest() {
if (haveNoGreatest) {
return "MAX";
}
return "GREATEST";
}
protected String forUpdate() {
if (haveNoForUpdate) {
return "";
}
return "FOR UPDATE";
}
public OffsetDateTime getOffsetDateTime(ResultSet rs, int columnIndex) throws SQLException {
if (haveNoDates) {
var date = rs.getLong(columnIndex);
if (date != 0) {
return Instant.ofEpochMilli(date).atOffset(ZoneOffset.UTC);
}
return null;
}
if (haveNoOffsetDateTime) {
var date = rs.getTimestamp(columnIndex);
if (date != null) {
return date.toInstant().atOffset(ZoneOffset.UTC);
}
return null;
}
return rs.getObject(columnIndex, OffsetDateTime.class);
}
public Object fromEpochMilli(Long milliseconds) {
if (haveNoDates) {
return milliseconds;
}
if (haveNoOffsetDateTime) {
return new Timestamp(milliseconds);
}
return Instant.ofEpochMilli(milliseconds).atOffset(ZoneOffset.UTC);
}
public Object toDateTime(OffsetDateTime now) {
if (haveNoDates) {
return now.toInstant().toEpochMilli();
}
return now;
}
public int dateTimeType() {
if (haveNoDates) {
return Types.INTEGER;
}
if (haveNoOffsetDateTime) {
return Types.TIMESTAMP;
}
return Types.TIMESTAMP_WITH_TIMEZONE;
}
public String returningId(String insertClause, String valuesClause, String idColumn) {
if (haveOutput) {
return insertClause + " OUTPUT inserted."+ idColumn + " " + valuesClause;
}
if (haveDeltaTables) {
return "SELECT " + idColumn + " FROM FINAL TABLE (" + insertClause + " " + valuesClause + ")";
}
return insertClause + " " + valuesClause + " RETURNING " + idColumn;
}
}
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