com.codename1.impl.javase.SECursor Maven / Gradle / Ivy
/*
* Copyright (c) 2012, Codename One and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Codename One designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.impl.javase;
import com.codename1.db.Cursor;
import com.codename1.db.Row;
import com.codename1.db.RowExt;
import com.codename1.io.Util;
import java.io.IOException;
import java.io.InputStream;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Chen
*/
public class SECursor implements Cursor, RowExt {
private ResultSet resultSet;
private boolean closed;
public SECursor(ResultSet resultSet) {
this.resultSet = resultSet;
}
@Override
protected void finalize() throws Throwable {
if(!closed) {
System.out.println("**** WARNING! DB Cursor was released by the GC without being closed first! This might cause crashes on iOS *****");
}
}
@Override
public boolean first() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.first();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
@Override
public boolean last() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.last();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
@Override
public boolean next() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.next();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
@Override
public boolean prev() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.previous();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public int getColumnIndex(String columnName) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
ResultSetMetaData meta = resultSet.getMetaData();
int colsCount = meta.getColumnCount();
for (int i = 0; i < colsCount; i++) {
String c = meta.getColumnLabel(i+1);
if(c.equalsIgnoreCase(columnName)){
return i;
}
}
return -1;
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public String getColumnName(int columnIndex) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
ResultSetMetaData meta = resultSet.getMetaData();
return meta.getColumnName(columnIndex + 1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public int getPosition() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getRow();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public Row getRow() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
return this;
}
public boolean position(int row) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.absolute(row);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public void close() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
closed = true;
resultSet.close();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public byte[] getBlob(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getBytes(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public double getDouble(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getDouble(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public float getFloat(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getFloat(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public int getInteger(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getInt(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public long getLong(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getLong(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public short getShort(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getShort(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public String getString(int index) throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.getString(index+1);
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
@Override
public boolean wasNull()throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
return resultSet.wasNull();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
public int getColumnCount() throws IOException {
if(closed) {
throw new IOException("Cursor is closed");
}
try {
ResultSetMetaData meta = resultSet.getMetaData();
return meta.getColumnCount();
} catch (SQLException ex) {
ex.printStackTrace();
throw new IOException(ex.getMessage());
}
}
}
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