com.jn.sqlhelper.dialect.internal.SQLServerDialect Maven / Gradle / Ivy
/*
* Copyright 2019 the original author or authors.
*
* Licensed under the LGPL, Version 3.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.gnu.org/licenses/lgpl-3.0.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.jn.sqlhelper.dialect.internal;
import com.jn.langx.annotation.Name;
import com.jn.langx.util.Preconditions;
import com.jn.langx.util.Strings;
import com.jn.sqlhelper.common.sql.sqlscript.PlainSqlDelimiter;
import com.jn.sqlhelper.common.sql.sqlscript.PlainSqlScriptParser;
import com.jn.sqlhelper.common.sql.sqlscript.PlainSqlStatementBuilder;
import com.jn.sqlhelper.dialect.internal.limit.OffsetFetchFirstOnlyLimitHandler;
import com.jn.sqlhelper.dialect.internal.limit.SQLServer2005LimitHandler;
import com.jn.sqlhelper.dialect.internal.limit.TopLimitHandler;
import com.jn.sqlhelper.dialect.internal.urlparser.SqlServerUrlParser;
import com.jn.sqlhelper.dialect.likeescaper.BackslashStyleEscaper;
/**
* SQLServer 版本说明
*
* version | Year | Release Name
* 1.0 1989 SQL Server 1.0 (16-bit)
* 1.1 1991 SQL Server 1.1 (16-bit)
* 4.2A 1992 SQL Server 4.2A (16-bit)
* 4.2B 1993 SQL Server 4.2B (16-bit)
* 4.21a 1993 SQL Server 4.21a
* 6.0 1995 SQL Server 6.0
* 6.5 1996 SQL Server 6.5
* 7.0 1998 SQL Server 7.0
* 8.0 2000 SQL Server 2000
* 8.0 2003 SQL Server 2000 64-bit
* 9.0 2005 SQL Server 2005
* 10.0 2008 SQL Server 2008
* 10.25 2010 Azure SQL database
* 10.50 2010 SQL Server 2008 R2
* 11.0 2012 SQL Server 2012
* 12.0 2014 SQL Server 2014
* 13.0 2016 SQL Server 2016
* 14.0 2017 SQL Server 2017
* 15.x 2019 SQL Server 2019
* 16.x 2022 SQL Server 2022
*
*/
@Name("sqlserver")
public class SQLServerDialect extends AbstractTransactSQLDialect {
private static final int PARAM_LIST_SIZE_LIMIT = 2100;
public SQLServerDialect() {
super();
setLikeEscaper(BackslashStyleEscaper.NON_DEFAULT_INSTANCE);
setDelegate(new SQLServer2012Dialect());
setUrlParser(new SqlServerUrlParser());
setPlainSqlScriptParser(new SQLServerSqlScriptParser());
}
/**
* @param productionVersion databaseMeta.getProductionVersion
*/
public static String guessDatabaseId(String productionVersion) {
Preconditions.checkNotNull(productionVersion);
String[] segments = Strings.split(productionVersion, ".");
if (segments.length > 0) {
String majorVersionString = segments[0];
int majorVersion = Integer.parseInt(majorVersionString);
String databaseId = null;
switch (majorVersion) {
case 8:
databaseId = "sqlserver2000";
break;
case 9:
databaseId = "sqlserver2005";
break;
case 10:
databaseId = "sqlserver2008";
break;
case 11:
databaseId = "sqlserver2012";
break;
case 12:
databaseId = "sqlserver2014";
break;
case 13:
databaseId = "sqlserver2016";
break;
case 14:
databaseId = "sqlserver2017";
break;
case 15:
databaseId = "sqlserver2019";
break;
case 16:
databaseId = "sqlserver2022";
break;
default:
break;
}
return databaseId;
}
return null;
}
@Override
public boolean isBindLimitParametersFirst() {
return false;
}
@Name("sqlserver2000")
public static class SQLServer2000Dialect extends AbstractTransactSQLDialect {
public SQLServer2000Dialect() {
setLimitHandler(new TopLimitHandler());
setDelegate(null);
}
@Override
public boolean isSupportsLimit() {
return true;
}
@Override
public boolean isUseMaxForLimit() {
return true;
}
@Override
public boolean isSupportsLimitOffset() {
return false;
}
@Override
public boolean isSupportsVariableLimit() {
return false;
}
@Override
public boolean isBindLimitParametersFirst() {
return true;
}
}
@Name("sqlserver2005")
public static class SQLServer2005Dialect extends AbstractTransactSQLDialect {
public SQLServer2005Dialect() {
setLimitHandler(new SQLServer2005LimitHandler());
setDelegate(null);
}
@Override
public boolean isSupportsLimit() {
return true;
}
@Override
public boolean isUseMaxForLimit() {
return true;
}
@Override
public boolean isSupportsLimitOffset() {
return true;
}
@Override
public boolean isSupportsVariableLimit() {
return true;
}
@Override
public char getBeforeQuote() {
return '[';
}
@Override
public char getAfterQuote() {
return ']';
}
}
@Name("sqlserver2008")
public static class SQLServer2008Dialect extends SQLServer2005Dialect {
}
@Name("sqlserver2012")
public static class SQLServer2012Dialect extends SQLServer2008Dialect {
public SQLServer2012Dialect() {
setLimitHandler(new OffsetFetchFirstOnlyLimitHandler().setSupportSimplifyFirstOnly(false));
}
@Override
public boolean isForceLimitUsage() {
return true;
}
@Override
public boolean isBindLimitParametersInReverseOrder() {
return false;
}
}
@Name("sqlserver2014")
public static class SQLServer2014Dialect extends SQLServer2012Dialect {
}
@Name("sqlserver2016")
public static class SQLServer2016Dialect extends SQLServer2014Dialect {
}
@Name("sqlserver2017")
public static class SQLServer2017Dialect extends SQLServer2016Dialect {
}
@Name("sqlserver2019")
public static class SQLServer2019Dialect extends SQLServer2017Dialect {
}
@Name("sqlserver2022")
public static class SQLServer2022Dialect extends SQLServer2019Dialect {
}
@Override
public char getBeforeQuote() {
return '[';
}
@Override
public char getAfterQuote() {
return ']';
}
private static class SQLServerSqlScriptParser extends PlainSqlScriptParser{
@Override
protected PlainSqlStatementBuilder newSqlStatementBuilder() {
return new SQLServerSqlStatementBuilder();
}
}
/**
* supporting SQL Server-specific delimiter changes.
*/
private static class SQLServerSqlStatementBuilder extends PlainSqlStatementBuilder {
@Override
protected PlainSqlDelimiter getDefaultDelimiter() {
return new PlainSqlDelimiter("GO", true);
}
@Override
protected String extractAlternateOpenQuote(String token) {
if (token.startsWith("N'")) {
return "N'";
}
return null;
}
@Override
protected String computeAlternateCloseQuote(String openQuote) {
return "'";
}
}
}