// GreenPOS is a point of sales application designed for touch screens.
// Copyright (C) 2007-2009 Openbravo, S.L.
// http://code.google.com/p/openbravocustom/
//
// This file is part of GreenPOS.
//
// GreenPOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GreenPOS 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GreenPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.data.loader;
import java.util.*;
import com.openbravo.basic.BasicException;
public abstract class BaseSentence implements SentenceList, SentenceFind, SentenceExec {
// Funciones de bajo nivel
public abstract DataResultSet openExec(Object params) throws BasicException;
public abstract DataResultSet moreResults() throws BasicException;
public abstract void closeExec() throws BasicException;
// Funciones
public final int exec() throws BasicException {
return exec((Object) null);
}
public final int exec(Object... params) throws BasicException {
return exec((Object) params);
}
public final int exec(Object params) throws BasicException {
DataResultSet SRS = openExec(params);
if (SRS == null) {
throw new BasicException(LocalRes.getIntString("exception.noupdatecount"));
}
int iResult = SRS.updateCount();
SRS.close();
closeExec();
return iResult;
}
public final List list() throws BasicException {
return list((Object) null);
}
public final List list(Object... params) throws BasicException {
return list((Object) params);
}
public final List list(Object params) throws BasicException {
// En caso de error o lanza un pepinazo en forma de DataException
DataResultSet SRS = openExec(params);
List aSO = fetchAll(SRS);
SRS.close();
closeExec();
return aSO;
}
public final List listPage(int offset, int length) throws BasicException {
return listPage(null, offset, length);
}
public final List listPage(Object params, int offset, int length) throws BasicException {
// En caso de error o lanza un pepinazo en forma de DataException
DataResultSet SRS = openExec(params);
List aSO = fetchPage(SRS, offset, length);
SRS.close();
closeExec();
return aSO;
}
public final Object find() throws BasicException {
return find((Object) null);
}
public final Object find(Object... params) throws BasicException {
return find((Object) params);
}
public final Object find(Object params) throws BasicException {
// En caso de error o lanza un pepinazo en forma de SQLException
DataResultSet SRS = openExec(params);
Object obj = fetchOne(SRS);
SRS.close();
closeExec();
return obj;
}
// Utilidades
public final List fetchAll(DataResultSet SRS) throws BasicException {
if (SRS == null) {
throw new BasicException(LocalRes.getIntString("exception.nodataset"));
}
List aSO = new ArrayList();
while (SRS.next()) {
aSO.add(SRS.getCurrent());
}
return aSO;
}
// Utilidades
public final List fetchPage(DataResultSet SRS, int offset, int length) throws BasicException {
if (SRS == null) {
throw new BasicException(LocalRes.getIntString("exception.nodataset"));
}
if (offset < 0 || length < 0) {
throw new BasicException(LocalRes.getIntString("exception.nonegativelimits"));
}
// Skip los primeros que no me importan
while (offset > 0 && SRS.next()) {
offset--;
}
// me traigo tantos como me han dicho
List aSO = new ArrayList();
if (offset == 0) {
while (length > 0 && SRS.next()) {
length--;
aSO.add(SRS.getCurrent());
}
}
return aSO;
}
public final Object fetchOne(DataResultSet SRS) throws BasicException {
if (SRS == null) {
throw new BasicException(LocalRes.getIntString("exception.nodataset"));
}
if (SRS.next()) {
return SRS.getCurrent();
} else {
return null;
}
}
}