xdev.db.db2.jdbc.DB2DMLAssembler Maven / Gradle / Ivy

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/*
 * SqlEngine Database Adapter DB2 - XAPI SqlEngine Database Adapter for DB2
 * Copyright © 2003 XDEV Software (https://xdev.software)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */
package xdev.db.db2.jdbc;

import com.xdev.jadoth.sqlengine.SELECT;
import com.xdev.jadoth.sqlengine.dbms.standard.StandardDMLAssembler;


public class DB2DMLAssembler extends StandardDMLAssembler
{
	protected static final String _FETCH_FIRST_ = " FETCH FIRST ";
	
	public DB2DMLAssembler(final DB2Dbms dbms)
	{
		super(dbms);
	}
	
	/**
	 * @param query
	 * @param sb
	 * @param flags
	 * @param clauseSeperator
	 * @param newLine
	 * @param indentLevel
	 * @return
	 * @see StandardDMLAssembler#assembleSelectRowLimit(SELECT, StringBuilder, int, String, String, int)
	 */
	@Override
	protected StringBuilder assembleSelectRowLimit(
		final SELECT        query,
		final StringBuilder sb,
		final int           flags,
		final String        clauseSeperator,
		final String        newLine,
		final int           indentLevel)
	{
		final Integer top = query.getFetchFirstRowCount();
		if(top != null)
		{
			sb.append(_FETCH_FIRST_).append(top).append(_ROWS_ONLY);
		}
		return sb;
	}
}