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author | Constantin Jucovschi <cj@ubuntu.localdomain> | 2009-04-24 07:20:22 -0400 |
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committer | Constantin Jucovschi <cj@ubuntu.localdomain> | 2009-04-24 07:20:22 -0400 |
commit | 8f27e65bddd7d4b8515ce620fb485fdd78fcdf89 (patch) | |
tree | bd328a4dd4f92d32202241b5e3a7f36177792c5f /java/rasj/RasMArrayShort.java | |
download | rasdaman-upstream-8f27e65bddd7d4b8515ce620fb485fdd78fcdf89.tar.gz rasdaman-upstream-8f27e65bddd7d4b8515ce620fb485fdd78fcdf89.tar.xz rasdaman-upstream-8f27e65bddd7d4b8515ce620fb485fdd78fcdf89.zip |
Initial commitv8.0
Diffstat (limited to 'java/rasj/RasMArrayShort.java')
-rw-r--r-- | java/rasj/RasMArrayShort.java | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/java/rasj/RasMArrayShort.java b/java/rasj/RasMArrayShort.java new file mode 100644 index 0000000..98c4657 --- /dev/null +++ b/java/rasj/RasMArrayShort.java @@ -0,0 +1,195 @@ +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 short. + * @version $Revision: 1.6 $ + * method intersectionWith(RasMInterval) uses byte array and is not optimized for special data arrays + * + * + * + * COMMENTS: + * + * </pre> + *********************************************************** */ + +public class RasMArrayShort extends RasGMArray +{ + + /** default constructor */ + public RasMArrayShort() + { + super(); + typeLength = SIZE_OF_SHORT; + } + + /** + * constructor for uninitialized MDD objects + * @param initDomain The initial Domain of the MArray + */ + public RasMArrayShort(final RasMInterval initDomain) + { + super(initDomain, SIZE_OF_SHORT); + objectData = new short[(int)(dataSize/SIZE_OF_SHORT)]; + 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 RasMArrayShort(final RasMInterval initDomain, RasStorageLayout stl) + { + super(initDomain, SIZE_OF_SHORT, stl); + objectData = new short[(int)(dataSize/SIZE_OF_SHORT)]; + data = null; + } + + /** + * copy constructor + * @param obj a copy of this object will be created + */ + public RasMArrayShort(final RasMArrayShort obj) + { + super(obj); + if(obj.objectData!=null) + { + objectData = new short[(int)(obj.dataSize/SIZE_OF_SHORT)]; + System.arraycopy(obj.getShortArray(), 0, objectData, 0, (int)(obj.dataSize/SIZE_OF_SHORT)); + data = null; + } + } + + /** + * subscript operator for read access of a cell. The cell value is returned + * as a byte[SIZE_OF_SHORT] array. This kind of access to a cell is significantly slower + * than getShort(), because each cell value has to be converted from short to a + * byte[SIZE_OF_SHORT] 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 + { + short cellValue; + short tmp; + + //first test dimensionality + if(point.dimension() != domain.dimension()) + throw new RasDimensionMismatchException(point.dimension(), domain.dimension()); + + cellValue = ((short[])objectData)[(int)domain.cellOffset(point)]; + for(int i=0; i<SIZE_OF_SHORT; i++) + { + tmp = cellValue; + tmp >>>= (((SIZE_OF_SHORT -1)-i)*8); + currentCell[i] = (byte)tmp; + } + + return currentCell; + + } + + /** subscript operator for read access of a cell. The cell value is returned as + * an short. This access method is faster then getCell(), because no conversion + * from short to byte[SIZE_OF_SHORT] has to be done. + */ + public int getShort(final RasPoint point) + throws RasDimensionMismatchException, RasIndexOutOfBoundsException + { + // first test dimensionality + if(point.dimension() != domain.dimension()) + throw new RasDimensionMismatchException(point.dimension(), domain.dimension()); + + return ((short[])objectData)[(int)domain.cellOffset(point)]; + } + + /** + * get the internal representation of the array + */ + public short[] getShortArray() + { + if(objectData==null) + { + ByteArrayInputStream bis = new ByteArrayInputStream(data); + DataInputStream dis = new DataInputStream(bis); + objectData = new short[data.length/SIZE_OF_SHORT]; + try + { + for(int j=0; j<data.length/SIZE_OF_SHORT; j++) + { + ((short[])objectData)[j] = dis.readShort(); + } + } + catch(IOException e) + { + throw new RasClientInternalException("RasMArrayShort", "getShortArray()", + "IOException while converting data to objectData array " + e.getMessage()); + } + } + return (short[])objectData; + } + + /** get the internal representation of the array in bytes, + * please use getShortArray() + */ + public byte[] getArray() + { + if(data==null) + { + ByteArrayOutputStream bos = new ByteArrayOutputStream(); + DataOutputStream dos = new DataOutputStream(bos); + try + { + for(int j=0; j<((short[])objectData).length; j++) + dos.writeShort(((short[])objectData)[j]); + } + catch(IOException e) + { + throw new RasClientInternalException("RasMArrayShort", "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(short[] newData) + { + objectData = newData; + data = null; + dataSize = newData.length * SIZE_OF_SHORT; + } + +} + |