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package rasj;
import rasj.*;
import rasj.odmg.*;
import rasj.global.*;
import java.io.*;
/*
* This file is part of rasdaman community.
*
* Rasdaman community 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.
*
* Rasdaman community 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 rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/** ***********************************************************
* <pre>
*
* PURPOSE:
* This class represents a MArray with base type float.
* @version $Revision: 1.5 $
* method intersectionWith(RasMInterval) uses byte array and is not optimized for special data arrays
*
*
*
* COMMENTS:
*
* </pre>
*********************************************************** */
public class RasMArrayFloat extends RasGMArray
{
/** default constructor */
public RasMArrayFloat()
{
super();
typeLength = SIZE_OF_FLOAT;
}
/**
* constructor for uninitialized MDD objects
* @param initDomain The initial Domain of the MArray
* */
public RasMArrayFloat(final RasMInterval initDomain)
{
super(initDomain, SIZE_OF_FLOAT);
objectData = new float[(int)(dataSize/SIZE_OF_FLOAT)];
data = null;
}
/**
* Constructor for uninitialized MDD objects with Storage Layout
* @param initDomain The initial Domain of the MArray
* @param RasStorageLayout The storage layout to be used
*/
public RasMArrayFloat(final RasMInterval initDomain, RasStorageLayout stl)
{
super(initDomain, SIZE_OF_FLOAT, stl);
objectData = new float[(int)(dataSize/SIZE_OF_FLOAT)];
data = null;
}
/**
* copy constructor
* @param obj a copy of this object will be created
* */
public RasMArrayFloat(final RasMArrayFloat obj)
{
super(obj);
if(obj.objectData!=null)
{
objectData = new float[(int)(obj.dataSize/SIZE_OF_FLOAT)];
System.arraycopy(obj.getFloatArray(), 0, objectData, 0, (int)(obj.dataSize/SIZE_OF_FLOAT));
data = null;
}
}
/**
* subscript operator for read access of a cell. The cell value is returned
* as a byte[SIZE_OF_FLOAT] array. This kind of access to a cell is significantly slower
* than getFloat(), because each cell value has to be converted from float to a
* byte[SIZE_OF_FLOAT] array.
* The user has to take care that each Cell value is stored, before getting the next Cell.
*/
public byte[] getCell(RasPoint point)
throws RasDimensionMismatchException, RasIndexOutOfBoundsException
{
float cellValue;
int tmp;
//first test dimensionality
if(point.dimension() != domain.dimension())
throw new RasDimensionMismatchException(point.dimension(), domain.dimension());
cellValue = ((float[])objectData)[(int)domain.cellOffset(point)];
for(int i=0; i<SIZE_OF_FLOAT; i++)
{
tmp = Float.floatToRawIntBits(cellValue);
tmp >>>= (((SIZE_OF_FLOAT -1)-i)*8);
currentCell[i] = (byte)tmp;
}
return currentCell;
}
/** subscript operator for read access of a cell. The cell value is returned as
* an float. This access method is faster then getCell(), because no conversion
* from float to Byte[SIZE_OF_FLOAT] has to be done.
*/
public float getFloat( final RasPoint point)
throws RasDimensionMismatchException, RasIndexOutOfBoundsException
{
// first test dimensionality
if(point.dimension() != domain.dimension())
throw new RasDimensionMismatchException(point.dimension(), domain.dimension());
return ((float[])objectData)[(int)domain.cellOffset(point)];
}
/**
* get the internal representation of the array
*/
public float[] getFloatArray()
{
if(objectData==null)
{
ByteArrayInputStream bis = new ByteArrayInputStream(data);
DataInputStream dis = new DataInputStream(bis);
objectData = new float[data.length/SIZE_OF_FLOAT];
try
{
for(int j=0; j<data.length/SIZE_OF_FLOAT; j++)
{
((float[])objectData)[j] = dis.readFloat();
}
}
catch(IOException e)
{
throw new RasClientInternalException("RasMArrayFloat", "getFloatArray()",
"IOException while converting data to objectData array " + e.getMessage());
}
}
return (float[])objectData;
}
/** get the internal representation of the array in bytes,
* please use getFloatArray()
*/
public byte[] getArray()
{
if(data==null)
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bos);
try
{
for(int j=0; j<((float[])objectData).length; j++)
dos.writeFloat(((float[])objectData)[j]);
}
catch(IOException e)
{
throw new RasClientInternalException("RasMArrayFloat", "getArray()",
"IOException while converting objectData to data array " + e.getMessage());
}
data = bos.toByteArray();
}
return data;
}
/** set the internal representation of the array */
public void setArray(float[] newData)
{
objectData = newData;
data = null;
dataSize = newData.length * SIZE_OF_FLOAT;
}
}
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