Android Open Source - jepldroid J E P L Non J T A Connection S Q L Droid Impl

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License

The source code is released under:

Apache License

Java Source Code

package jepl.impl.nonjta.android;
//from  w  w  w.  j  a  v a  2  s  .  co m
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import jepl.JEPLException;
import jepl.impl.JEPLDALImpl;
import jepl.impl.JEPLPreparedStatementImpl;
import jepl.impl.nonjta.JEPLNonJTAConnectionImpl;

public class JEPLNonJTAConnectionSQLDroidImpl extends JEPLNonJTAConnectionImpl 
{
  protected Field androidCursorField;
  protected Method androidMoveToPositionMethod;  
  
    public JEPLNonJTAConnectionSQLDroidImpl(JEPLNonJTADataSourceAndroidImpl ds,Connection con) throws SQLException
    {
        super(ds,con);
    }
    
    protected JEPLPreparedStatementImpl createJEPLPreparedStatement(JEPLDALImpl dal,PreparedStatement stmt,String key) throws SQLException
    {
      return new JEPLPreparedStatementSQLDroidImpl(this,dal,stmt,key);
    }    
        
    @Override
    protected PreparedStatement prepareStatement(String sql,int autoGeneratedKeys) throws SQLException
    {
    // No est soportado prepareStatement(sql, autoGeneratedKeys)
    return con.prepareStatement(sql); 
    }

    public void moveResultSetAbsolutePosition(ResultSet result, int position)
    {
      try
      {
        if (androidCursorField == null)
        {
          this.androidCursorField = result.getClass().getDeclaredField("c");  // Es un atributo privado de SqldroidResultSet (no usar getField que requiere que sea pblico) 
            androidCursorField.setAccessible(true); // Es privado el atributo
        }      
        
        Object cursor = androidCursorField.get(result); //android.database.Cursor              
        
        if (androidMoveToPositionMethod == null)
        {
          // moveToPosition(int position)
          this.androidMoveToPositionMethod = cursor.getClass().getMethod("moveToPosition", new Class[]{int.class});  // Usamos getMethod porque es un mtodo pblico de Android y no getDeclaredMethod no sea que no est en esa clase exactamente
        }
        androidMoveToPositionMethod.invoke(cursor, position - 1);
    }
    catch (InvocationTargetException ex)
    {
      throw new JEPLException(ex);
    }                
    catch (NoSuchMethodException ex)
    {
      throw new JEPLException(ex);
    }              
    catch (IllegalAccessException ex)
    {
      throw new JEPLException(ex);
    }
    catch (NoSuchFieldException ex) 
    {
      throw new JEPLException(ex);
    }         
    }
      
}

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