mirror of
https://gitee.com/mybatis-flex/mybatis-flex.git
synced 2025-12-06 08:38:26 +08:00
feat: add sqlServer 2005 LimitOffsetProcessor
This commit is contained in:
开源海哥
parent
81016ec601
commit
9582f88cf7
@ -58,6 +58,10 @@ public enum DbType {
|
||||
* SQLSERVER
|
||||
*/
|
||||
SQLSERVER("sqlserver", "SQLServer 数据库"),
|
||||
/**
|
||||
* SqlServer 2005 数据库
|
||||
*/
|
||||
SQLSERVER_2005("sqlserver_2005", "SQLServer 数据库"),
|
||||
/**
|
||||
* DM
|
||||
*/
|
||||
|
||||
@ -31,148 +31,151 @@ import java.util.regex.Pattern;
|
||||
*/
|
||||
public class DbTypeUtil {
|
||||
|
||||
private DbTypeUtil() {}
|
||||
private DbTypeUtil() {
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取当前配置的 DbType
|
||||
*/
|
||||
public static DbType getDbType(DataSource dataSource) {
|
||||
String jdbcUrl = getJdbcUrl(dataSource);
|
||||
/**
|
||||
* 获取当前配置的 DbType
|
||||
*/
|
||||
public static DbType getDbType(DataSource dataSource) {
|
||||
String jdbcUrl = getJdbcUrl(dataSource);
|
||||
|
||||
if (StringUtil.isNotBlank(jdbcUrl)) {
|
||||
return parseDbType(jdbcUrl);
|
||||
}
|
||||
if (StringUtil.isNotBlank(jdbcUrl)) {
|
||||
return parseDbType(jdbcUrl);
|
||||
}
|
||||
|
||||
throw new IllegalStateException("Can not get dataSource jdbcUrl: " + dataSource.getClass().getName());
|
||||
}
|
||||
throw new IllegalStateException("Can not get dataSource jdbcUrl: " + dataSource.getClass().getName());
|
||||
}
|
||||
|
||||
/**
|
||||
* 通过数据源中获取 jdbc 的 url 配置
|
||||
* 符合 HikariCP, druid, c3p0, DBCP, beecp 数据源框架 以及 MyBatis UnpooledDataSource 的获取规则
|
||||
* UnpooledDataSource 参考 @{@link UnpooledDataSource#getUrl()}
|
||||
*
|
||||
* @return jdbc url 配置
|
||||
*/
|
||||
public static String getJdbcUrl(DataSource dataSource) {
|
||||
String[] methodNames = new String[]{"getUrl", "getJdbcUrl"};
|
||||
for (String methodName : methodNames) {
|
||||
try {
|
||||
Method method = dataSource.getClass().getMethod(methodName);
|
||||
return (String) method.invoke(dataSource);
|
||||
} catch (Exception e) {
|
||||
//ignore
|
||||
}
|
||||
}
|
||||
/**
|
||||
* 通过数据源中获取 jdbc 的 url 配置
|
||||
* 符合 HikariCP, druid, c3p0, DBCP, beecp 数据源框架 以及 MyBatis UnpooledDataSource 的获取规则
|
||||
* UnpooledDataSource 参考 @{@link UnpooledDataSource#getUrl()}
|
||||
*
|
||||
* @return jdbc url 配置
|
||||
*/
|
||||
public static String getJdbcUrl(DataSource dataSource) {
|
||||
String[] methodNames = new String[]{"getUrl", "getJdbcUrl"};
|
||||
for (String methodName : methodNames) {
|
||||
try {
|
||||
Method method = dataSource.getClass().getMethod(methodName);
|
||||
return (String) method.invoke(dataSource);
|
||||
} catch (Exception e) {
|
||||
//ignore
|
||||
}
|
||||
}
|
||||
|
||||
Connection connection = null;
|
||||
try {
|
||||
connection = dataSource.getConnection();
|
||||
return connection.getMetaData().getURL();
|
||||
} catch (Exception e) {
|
||||
throw FlexExceptions.wrap("Can not get the dataSource jdbcUrl", e);
|
||||
} finally {
|
||||
if (connection != null) {
|
||||
try {
|
||||
connection.close();
|
||||
} catch (SQLException e) { //ignore
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Connection connection = null;
|
||||
try {
|
||||
connection = dataSource.getConnection();
|
||||
return connection.getMetaData().getURL();
|
||||
} catch (Exception e) {
|
||||
throw FlexExceptions.wrap("Can not get the dataSource jdbcUrl", e);
|
||||
} finally {
|
||||
if (connection != null) {
|
||||
try {
|
||||
connection.close();
|
||||
} catch (SQLException e) { //ignore
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* 参考 druid 和 MyBatis-plus 的 JdbcUtils
|
||||
* {@link com.alibaba.druid.util.JdbcUtils#getDbType(String, String)}
|
||||
* {@link com.baomidou.mybatisplus.extension.toolkit.JdbcUtils#getDbType(String)}
|
||||
*
|
||||
* @param jdbcUrl jdbcURL
|
||||
* @return 返回数据库类型
|
||||
*/
|
||||
public static DbType parseDbType(String jdbcUrl) {
|
||||
jdbcUrl = jdbcUrl.toLowerCase();
|
||||
if (jdbcUrl.contains(":mysql:") || jdbcUrl.contains(":cobar:")) {
|
||||
return DbType.MYSQL;
|
||||
} else if (jdbcUrl.contains(":mariadb:")) {
|
||||
return DbType.MARIADB;
|
||||
} else if (jdbcUrl.contains(":oracle:")) {
|
||||
return DbType.ORACLE;
|
||||
} else if (jdbcUrl.contains(":sqlserver:") || jdbcUrl.contains(":microsoft:") || jdbcUrl.contains(":sqlserver2012:")) {
|
||||
return DbType.SQLSERVER;
|
||||
} else if (jdbcUrl.contains(":postgresql:")) {
|
||||
return DbType.POSTGRE_SQL;
|
||||
} else if (jdbcUrl.contains(":hsqldb:")) {
|
||||
return DbType.HSQL;
|
||||
} else if (jdbcUrl.contains(":db2:")) {
|
||||
return DbType.DB2;
|
||||
} else if (jdbcUrl.contains(":sqlite:")) {
|
||||
return DbType.SQLITE;
|
||||
} else if (jdbcUrl.contains(":h2:")) {
|
||||
return DbType.H2;
|
||||
} else if (isMatchedRegex(":dm\\d*:", jdbcUrl)) {
|
||||
return DbType.DM;
|
||||
} else if (jdbcUrl.contains(":xugu:")) {
|
||||
return DbType.XUGU;
|
||||
} else if (isMatchedRegex(":kingbase\\d*:", jdbcUrl)) {
|
||||
return DbType.KINGBASE_ES;
|
||||
} else if (jdbcUrl.contains(":phoenix:")) {
|
||||
return DbType.PHOENIX;
|
||||
} else if (jdbcUrl.contains(":zenith:")) {
|
||||
return DbType.GAUSS;
|
||||
} else if (jdbcUrl.contains(":gbase:")) {
|
||||
return DbType.GBASE;
|
||||
} else if (jdbcUrl.contains(":gbasedbt-sqli:") || jdbcUrl.contains(":informix-sqli:")) {
|
||||
return DbType.GBASE_8S;
|
||||
} else if (jdbcUrl.contains(":ch:") || jdbcUrl.contains(":clickhouse:")) {
|
||||
return DbType.CLICK_HOUSE;
|
||||
} else if (jdbcUrl.contains(":oscar:")) {
|
||||
return DbType.OSCAR;
|
||||
} else if (jdbcUrl.contains(":sybase:")) {
|
||||
return DbType.SYBASE;
|
||||
} else if (jdbcUrl.contains(":oceanbase:")) {
|
||||
return DbType.OCEAN_BASE;
|
||||
} else if (jdbcUrl.contains(":highgo:")) {
|
||||
return DbType.HIGH_GO;
|
||||
} else if (jdbcUrl.contains(":cubrid:")) {
|
||||
return DbType.CUBRID;
|
||||
} else if (jdbcUrl.contains(":goldilocks:")) {
|
||||
return DbType.GOLDILOCKS;
|
||||
} else if (jdbcUrl.contains(":csiidb:")) {
|
||||
return DbType.CSIIDB;
|
||||
} else if (jdbcUrl.contains(":sap:")) {
|
||||
return DbType.SAP_HANA;
|
||||
} else if (jdbcUrl.contains(":impala:")) {
|
||||
return DbType.IMPALA;
|
||||
} else if (jdbcUrl.contains(":vertica:")) {
|
||||
return DbType.VERTICA;
|
||||
} else if (jdbcUrl.contains(":xcloud:")) {
|
||||
return DbType.XCloud;
|
||||
} else if (jdbcUrl.contains(":firebirdsql:")) {
|
||||
return DbType.FIREBIRD;
|
||||
} else if (jdbcUrl.contains(":redshift:")) {
|
||||
return DbType.REDSHIFT;
|
||||
} else if (jdbcUrl.contains(":opengauss:")) {
|
||||
return DbType.OPENGAUSS;
|
||||
} else if (jdbcUrl.contains(":taos:") || jdbcUrl.contains(":taos-rs:")) {
|
||||
return DbType.TDENGINE;
|
||||
} else if (jdbcUrl.contains(":informix")) {
|
||||
return DbType.INFORMIX;
|
||||
} else if (jdbcUrl.contains(":uxdb:")) {
|
||||
return DbType.UXDB;
|
||||
} else if (jdbcUrl.contains(":greenplum:")) {
|
||||
return DbType.GREENPLUM;
|
||||
} else {
|
||||
return DbType.OTHER;
|
||||
}
|
||||
}
|
||||
/**
|
||||
* 参考 druid 和 MyBatis-plus 的 JdbcUtils
|
||||
* {@link com.alibaba.druid.util.JdbcUtils#getDbType(String, String)}
|
||||
* {@link com.baomidou.mybatisplus.extension.toolkit.JdbcUtils#getDbType(String)}
|
||||
*
|
||||
* @param jdbcUrl jdbcURL
|
||||
* @return 返回数据库类型
|
||||
*/
|
||||
public static DbType parseDbType(String jdbcUrl) {
|
||||
jdbcUrl = jdbcUrl.toLowerCase();
|
||||
if (jdbcUrl.contains(":mysql:") || jdbcUrl.contains(":cobar:")) {
|
||||
return DbType.MYSQL;
|
||||
} else if (jdbcUrl.contains(":mariadb:")) {
|
||||
return DbType.MARIADB;
|
||||
} else if (jdbcUrl.contains(":oracle:")) {
|
||||
return DbType.ORACLE;
|
||||
} else if (jdbcUrl.contains(":sqlserver2012:")) {
|
||||
return DbType.SQLSERVER;
|
||||
} else if (jdbcUrl.contains(":sqlserver:") || jdbcUrl.contains(":microsoft:")) {
|
||||
return DbType.SQLSERVER_2005;
|
||||
} else if (jdbcUrl.contains(":postgresql:")) {
|
||||
return DbType.POSTGRE_SQL;
|
||||
} else if (jdbcUrl.contains(":hsqldb:")) {
|
||||
return DbType.HSQL;
|
||||
} else if (jdbcUrl.contains(":db2:")) {
|
||||
return DbType.DB2;
|
||||
} else if (jdbcUrl.contains(":sqlite:")) {
|
||||
return DbType.SQLITE;
|
||||
} else if (jdbcUrl.contains(":h2:")) {
|
||||
return DbType.H2;
|
||||
} else if (isMatchedRegex(":dm\\d*:", jdbcUrl)) {
|
||||
return DbType.DM;
|
||||
} else if (jdbcUrl.contains(":xugu:")) {
|
||||
return DbType.XUGU;
|
||||
} else if (isMatchedRegex(":kingbase\\d*:", jdbcUrl)) {
|
||||
return DbType.KINGBASE_ES;
|
||||
} else if (jdbcUrl.contains(":phoenix:")) {
|
||||
return DbType.PHOENIX;
|
||||
} else if (jdbcUrl.contains(":zenith:")) {
|
||||
return DbType.GAUSS;
|
||||
} else if (jdbcUrl.contains(":gbase:")) {
|
||||
return DbType.GBASE;
|
||||
} else if (jdbcUrl.contains(":gbasedbt-sqli:") || jdbcUrl.contains(":informix-sqli:")) {
|
||||
return DbType.GBASE_8S;
|
||||
} else if (jdbcUrl.contains(":ch:") || jdbcUrl.contains(":clickhouse:")) {
|
||||
return DbType.CLICK_HOUSE;
|
||||
} else if (jdbcUrl.contains(":oscar:")) {
|
||||
return DbType.OSCAR;
|
||||
} else if (jdbcUrl.contains(":sybase:")) {
|
||||
return DbType.SYBASE;
|
||||
} else if (jdbcUrl.contains(":oceanbase:")) {
|
||||
return DbType.OCEAN_BASE;
|
||||
} else if (jdbcUrl.contains(":highgo:")) {
|
||||
return DbType.HIGH_GO;
|
||||
} else if (jdbcUrl.contains(":cubrid:")) {
|
||||
return DbType.CUBRID;
|
||||
} else if (jdbcUrl.contains(":goldilocks:")) {
|
||||
return DbType.GOLDILOCKS;
|
||||
} else if (jdbcUrl.contains(":csiidb:")) {
|
||||
return DbType.CSIIDB;
|
||||
} else if (jdbcUrl.contains(":sap:")) {
|
||||
return DbType.SAP_HANA;
|
||||
} else if (jdbcUrl.contains(":impala:")) {
|
||||
return DbType.IMPALA;
|
||||
} else if (jdbcUrl.contains(":vertica:")) {
|
||||
return DbType.VERTICA;
|
||||
} else if (jdbcUrl.contains(":xcloud:")) {
|
||||
return DbType.XCloud;
|
||||
} else if (jdbcUrl.contains(":firebirdsql:")) {
|
||||
return DbType.FIREBIRD;
|
||||
} else if (jdbcUrl.contains(":redshift:")) {
|
||||
return DbType.REDSHIFT;
|
||||
} else if (jdbcUrl.contains(":opengauss:")) {
|
||||
return DbType.OPENGAUSS;
|
||||
} else if (jdbcUrl.contains(":taos:") || jdbcUrl.contains(":taos-rs:")) {
|
||||
return DbType.TDENGINE;
|
||||
} else if (jdbcUrl.contains(":informix")) {
|
||||
return DbType.INFORMIX;
|
||||
} else if (jdbcUrl.contains(":uxdb:")) {
|
||||
return DbType.UXDB;
|
||||
} else if (jdbcUrl.contains(":greenplum:")) {
|
||||
return DbType.GREENPLUM;
|
||||
} else {
|
||||
return DbType.OTHER;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 正则匹配，验证成功返回 true，验证失败返回 false
|
||||
*/
|
||||
public static boolean isMatchedRegex(String regex, String jdbcUrl) {
|
||||
if (null == jdbcUrl) {
|
||||
return false;
|
||||
}
|
||||
return Pattern.compile(regex).matcher(jdbcUrl).find();
|
||||
}
|
||||
/**
|
||||
* 正则匹配，验证成功返回 true，验证失败返回 false
|
||||
*/
|
||||
public static boolean isMatchedRegex(String regex, String jdbcUrl) {
|
||||
if (null == jdbcUrl) {
|
||||
return false;
|
||||
}
|
||||
return Pattern.compile(regex).matcher(jdbcUrl).find();
|
||||
}
|
||||
}
|
||||
|
||||
@ -134,6 +134,8 @@ public class DialectFactory {
|
||||
return new CommonsDialectImpl(KeywordWrap.DOUBLE_QUOTATION, LimitOffsetProcessor.DERBY);
|
||||
case SQLSERVER:
|
||||
return new CommonsDialectImpl(KeywordWrap.SQUARE_BRACKETS, LimitOffsetProcessor.SQLSERVER);
|
||||
case SQLSERVER_2005:
|
||||
return new CommonsDialectImpl(KeywordWrap.SQUARE_BRACKETS, LimitOffsetProcessor.SQLSERVER_2005);
|
||||
case INFORMIX:
|
||||
return new CommonsDialectImpl(KeywordWrap.DOUBLE_QUOTATION, LimitOffsetProcessor.INFORMIX);
|
||||
case SYBASE:
|
||||
|
||||
@ -29,136 +29,152 @@ import static com.mybatisflex.core.constant.SqlConsts.*;
|
||||
*/
|
||||
public interface LimitOffsetProcessor {
|
||||
|
||||
/**
|
||||
* MySql 的处理器
|
||||
* 适合 {@link DbType#MYSQL,DbType#MARIADB,DbType#H2,DbType#CLICK_HOUSE,DbType#XCloud}
|
||||
*/
|
||||
LimitOffsetProcessor MYSQL = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
sql.append(LIMIT).append(limitOffset).append(DELIMITER).append(limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(LIMIT).append(limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
/**
|
||||
* MySql 的处理器
|
||||
* 适合 {@link DbType#MYSQL,DbType#MARIADB,DbType#H2,DbType#CLICK_HOUSE,DbType#XCloud}
|
||||
*/
|
||||
LimitOffsetProcessor MYSQL = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
sql.append(LIMIT).append(limitOffset).append(DELIMITER).append(limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(LIMIT).append(limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Postgresql 的处理器
|
||||
* 适合 {@link DbType#POSTGRE_SQL,DbType#SQLITE,DbType#H2,DbType#HSQL,DbType#KINGBASE_ES,DbType#PHOENIX}
|
||||
* 适合 {@link DbType#SAP_HANA,DbType#IMPALA,DbType#HIGH_GO,DbType#VERTICA,DbType#REDSHIFT}
|
||||
* 适合 {@link DbType#OPENGAUSS,DbType#TDENGINE,DbType#UXDB}
|
||||
*/
|
||||
LimitOffsetProcessor POSTGRESQL = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
sql.append(LIMIT).append(limitRows).append(OFFSET).append(limitOffset);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(LIMIT).append(limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
/**
|
||||
* Postgresql 的处理器
|
||||
* 适合 {@link DbType#POSTGRE_SQL,DbType#SQLITE,DbType#H2,DbType#HSQL,DbType#KINGBASE_ES,DbType#PHOENIX}
|
||||
* 适合 {@link DbType#SAP_HANA,DbType#IMPALA,DbType#HIGH_GO,DbType#VERTICA,DbType#REDSHIFT}
|
||||
* 适合 {@link DbType#OPENGAUSS,DbType#TDENGINE,DbType#UXDB}
|
||||
*/
|
||||
LimitOffsetProcessor POSTGRESQL = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
sql.append(LIMIT).append(limitRows).append(OFFSET).append(limitOffset);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(LIMIT).append(limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* derby 的处理器
|
||||
* 适合 {@link DbType#DERBY,DbType#ORACLE_12C,DbType#SQLSERVER ,DbType#POSTGRE_SQL}
|
||||
*/
|
||||
LimitOffsetProcessor DERBY = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// OFFSET ** ROWS FETCH NEXT ** ROWS ONLY")
|
||||
sql.append(OFFSET).append(limitOffset).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(OFFSET).append(0).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
/**
|
||||
* derby 的处理器
|
||||
* 适合 {@link DbType#DERBY,DbType#ORACLE_12C,DbType#SQLSERVER ,DbType#POSTGRE_SQL}
|
||||
*/
|
||||
LimitOffsetProcessor DERBY = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// OFFSET ** ROWS FETCH NEXT ** ROWS ONLY")
|
||||
sql.append(OFFSET).append(limitOffset).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else if (limitRows != null) {
|
||||
sql.append(OFFSET).append(0).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* derby 的处理器
|
||||
* 适合 {@link DbType#DERBY,DbType#ORACLE_12C,DbType#SQLSERVER ,DbType#POSTGRE_SQL}
|
||||
*/
|
||||
LimitOffsetProcessor SQLSERVER = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// OFFSET ** ROWS FETCH NEXT ** ROWS ONLY")
|
||||
sql.append(OFFSET).append(limitOffset).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else if (limitRows != null) {
|
||||
List<QueryOrderBy> orderBys = CPI.getOrderBys(queryWrapper);
|
||||
if (CollectionUtil.isNotEmpty(orderBys)) {
|
||||
sql.append(OFFSET).append(0).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else {
|
||||
sql.insert(6, TOP + limitRows);
|
||||
}
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
/**
|
||||
* derby 的处理器
|
||||
* 适合 {@link DbType#DERBY,DbType#ORACLE_12C,DbType#SQLSERVER ,DbType#POSTGRE_SQL}
|
||||
*/
|
||||
LimitOffsetProcessor SQLSERVER = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// OFFSET ** ROWS FETCH NEXT ** ROWS ONLY")
|
||||
sql.append(OFFSET).append(limitOffset).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else if (limitRows != null) {
|
||||
List<QueryOrderBy> orderBys = CPI.getOrderBys(queryWrapper);
|
||||
if (CollectionUtil.isNotEmpty(orderBys)) {
|
||||
sql.append(OFFSET).append(0).append(ROWS_FETCH_NEXT).append(limitRows).append(ROWS_ONLY);
|
||||
} else {
|
||||
sql.insert(6, TOP + limitRows);
|
||||
}
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Informix 的处理器
|
||||
* 适合 {@link DbType#INFORMIX}
|
||||
* 文档 {@link <a href="https://www.ibm.com/docs/en/informix-servers/14.10?topic=clause-restricting-return-values-skip-limit-first-options">https://www.ibm.com/docs/en/informix-servers/14.10?topic=clause-restricting-return-values-skip-limit-first-options</a>}
|
||||
*/
|
||||
LimitOffsetProcessor INFORMIX = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// SELECT SKIP 2 FIRST 1 * FROM
|
||||
sql.insert(6, SKIP + limitOffset + FIRST + limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, FIRST + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Firebird 的处理器
|
||||
* 适合 {@link DbType#FIREBIRD}
|
||||
*/
|
||||
LimitOffsetProcessor FIREBIRD = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// ROWS 2 TO 3
|
||||
sql.append(ROWS).append(limitOffset).append(TO).append(limitOffset + limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, FIRST + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Oracle11g及以下数据库的处理器
|
||||
* 适合 {@link DbType#ORACLE,DbType#DM,DbType#GAUSS}
|
||||
*/
|
||||
LimitOffsetProcessor ORACLE = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null) {
|
||||
if (limitOffset == null) {
|
||||
limitOffset = 0;
|
||||
}
|
||||
StringBuilder newSql = new StringBuilder("SELECT * FROM (SELECT TEMP_DATAS.*, ROWNUM RN FROM (");
|
||||
newSql.append(sql);
|
||||
newSql.append(") TEMP_DATAS WHERE ROWNUM <= ").append(limitOffset + limitRows).append(") WHERE RN > ").append(limitOffset);
|
||||
return newSql;
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Sybase 处理器
|
||||
* 适合 {@link DbType#SYBASE}
|
||||
*/
|
||||
LimitOffsetProcessor SYBASE = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
//SELECT TOP 1 START AT 3 * FROM
|
||||
sql.insert(6, TOP + limitRows + START_AT + (limitOffset + 1));
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, TOP + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
/**
|
||||
* SqlServer 2005 limit 处理器
|
||||
*/
|
||||
LimitOffsetProcessor SQLSERVER_2005 = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null) {
|
||||
if (limitOffset == null) {
|
||||
limitOffset = 0;
|
||||
}
|
||||
StringBuilder newSql = new StringBuilder("SELECT * FROM (SELECT TEMP_DATAS.*, ROW_NUMBER() OVER() AS RN FROM (");
|
||||
newSql.append(sql).append(") AS TEMP_DATAS) WHERE RN > ").append(limitOffset).append(" AND RN <= ").append(limitRows + limitRows);
|
||||
return newSql;
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* 处理构建 limit 和 offset
|
||||
*
|
||||
* @param sql 已经构建的 sql
|
||||
* @param queryWrapper 参数内容
|
||||
* @param limitRows 用户传入的 limit 参数 可能为 null
|
||||
* @param limitOffset 用户传入的 offset 参数，可能为 null
|
||||
*/
|
||||
StringBuilder process(StringBuilder sql, QueryWrapper queryWrapper, Integer limitRows, Integer limitOffset);
|
||||
/**
|
||||
* Informix 的处理器
|
||||
* 适合 {@link DbType#INFORMIX}
|
||||
* 文档 {@link <a href="https://www.ibm.com/docs/en/informix-servers/14.10?topic=clause-restricting-return-values-skip-limit-first-options">https://www.ibm.com/docs/en/informix-servers/14.10?topic=clause-restricting-return-values-skip-limit-first-options</a>}
|
||||
*/
|
||||
LimitOffsetProcessor INFORMIX = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// SELECT SKIP 2 FIRST 1 * FROM
|
||||
sql.insert(6, SKIP + limitOffset + FIRST + limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, FIRST + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Firebird 的处理器
|
||||
* 适合 {@link DbType#FIREBIRD}
|
||||
*/
|
||||
LimitOffsetProcessor FIREBIRD = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
// ROWS 2 TO 3
|
||||
sql.append(ROWS).append(limitOffset).append(TO).append(limitOffset + limitRows);
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, FIRST + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Oracle11g及以下数据库的处理器
|
||||
* 适合 {@link DbType#ORACLE,DbType#DM,DbType#GAUSS}
|
||||
*/
|
||||
LimitOffsetProcessor ORACLE = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null) {
|
||||
if (limitOffset == null) {
|
||||
limitOffset = 0;
|
||||
}
|
||||
StringBuilder newSql = new StringBuilder("SELECT * FROM (SELECT TEMP_DATAS.*, ROWNUM RN FROM (");
|
||||
newSql.append(sql);
|
||||
newSql.append(") TEMP_DATAS WHERE ROWNUM <= ").append(limitOffset + limitRows).append(") WHERE RN > ").append(limitOffset);
|
||||
return newSql;
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
/**
|
||||
* Sybase 处理器
|
||||
* 适合 {@link DbType#SYBASE}
|
||||
*/
|
||||
LimitOffsetProcessor SYBASE = (sql, queryWrapper, limitRows, limitOffset) -> {
|
||||
if (limitRows != null && limitOffset != null) {
|
||||
//SELECT TOP 1 START AT 3 * FROM
|
||||
sql.insert(6, TOP + limitRows + START_AT + (limitOffset + 1));
|
||||
} else if (limitRows != null) {
|
||||
sql.insert(6, TOP + limitRows);
|
||||
}
|
||||
return sql;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* 处理构建 limit 和 offset
|
||||
*
|
||||
* @param sql 已经构建的 sql
|
||||
* @param queryWrapper 参数内容
|
||||
* @param limitRows 用户传入的 limit 参数 可能为 null
|
||||
* @param limitOffset 用户传入的 offset 参数，可能为 null
|
||||
*/
|
||||
StringBuilder process(StringBuilder sql, QueryWrapper queryWrapper, Integer limitRows, Integer limitOffset);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user