com.blazebit.persistence.impl.dialect.SQL2008DbmsLimitHandler Maven / Gradle / Ivy
/*
* Copyright 2014 - 2023 Blazebit.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.blazebit.persistence.impl.dialect;
import java.sql.PreparedStatement;
import java.sql.SQLException;
/**
* @author Christian Beikov
* @since 1.2.0
*/
public class SQL2008DbmsLimitHandler extends AbstractDbmsLimitHandler {
public SQL2008DbmsLimitHandler() {
super(40);
}
public SQL2008DbmsLimitHandler(int length) {
super(length);
}
@Override
public boolean supportsVariableLimit() {
return true;
}
@Override
public void applySql(StringBuilder sqlSb, boolean isSubquery, String limit, String offset) {
if (offset != null) {
sqlSb.append(" offset ").append(offset).append(" rows");
if (limit != null) {
sqlSb.append(" fetch next ").append(limit).append(" rows only");
}
} else if (limit != null) {
sqlSb.append(" fetch first ").append(limit).append(" rows only");
}
}
@Override
public int bindLimitParametersAtEndOfQuery(Integer limit, Integer offset, PreparedStatement statement, int index) throws SQLException {
if (offset != null) {
statement.setInt(index, offset);
if (limit != null) {
statement.setInt(index + 1, limit);
return 2;
}
return 1;
} else if (limit != null) {
statement.setInt(index, limit);
return 1;
}
return 0;
}
}