Package rasj

Class RasFastScale

java.lang.Object

rasj.RasFastScale

All Implemented Interfaces:

RasGlobalDefs

public class RasFastScale
extends java.lang.Object
implements RasGlobalDefs

class for fast scaling

Field Summary

Fields inherited from interface rasj.global.RasGlobalDefs

ACC_DEN_CAPABILITY_WRONG, ACC_DEN_INC_LOGIN, ACC_DEN_NO_PERMISSION, BASE_DBS_ERROR, CREATED, DATABASE_NOT_DEFINED, DB_CONN_FAILED, DB_NOT_OPEN, DELETED, DIMENSION_MISMATCH, FAST_PRE_SCALE_FACTORS, FAST_PRE_SCALE_SUFFIXES, GETFREESERVER_WAIT_INCREMENT, GETFREESERVER_WAIT_INITIAL, GUESTIDENT_DEFAULT, ILLEGAL_ULONG_VALUE, ILLEGAL_USHORT_VALUE, INDEX_OUT_OF_BOUNDS, INTERNAL_CLIENT_ERROR, INTERNAL_DL_PARSE_EXCEPTION, INVALID_OBJECT_NAME_ERROR, KEYWORD_ATYPE, KEYWORD_BTYPE, KEYWORD_CLASS, KEYWORD_CODE, KEYWORD_COLNO, KEYWORD_DIM1, KEYWORD_DIM2, KEYWORD_ERRNO, KEYWORD_HIGH, KEYWORD_INDEX, KEYWORD_INVNAME, KEYWORD_LINENO, KEYWORD_LOW, KEYWORD_METHOD, KEYWORD_TAB, KEYWORD_TOKEN, KEYWORD_TYPE, KEYWORD_URL, KEYWORD_VAL, MANAGER_BUSY, MANAGER_CONN_FAILED, MAX_GETFREESERVER_ATTEMPTS, MODIFIED, NO_ACTIVE_SERVERS, NO_STATUS, NUM_FAST_PRE_SCALE, RAS_ARRAY, RAS_AUTO_COMPRESSION, RAS_BOOLEAN, RAS_BYTE, RAS_CHAR, RAS_COLLECTION, RAS_COMPLEX1, RAS_DOUBLE, RAS_FLOAT, RAS_HDF, RAS_INT, RAS_JPEG, RAS_LONG, RAS_MARRAY, RAS_MINTERVAL, RAS_OID, RAS_PNG, RAS_POINT, RAS_RGB, RAS_SHORT, RAS_SINTERVAL, RAS_STRING, RAS_STRUCTURE, RAS_TIFF, RAS_ULONG, RAS_UNKNOWN, RAS_USHORT, RAS_ZLIB, RASJ_VERSION, RASMGRPORT_DEFAULT, READ, REQUEST_FORMAT_ERROR, RESULT_IS_NO_CELL, RESULT_IS_NO_INTERVAL, SIZE_OF_BOOLEAN, SIZE_OF_BYTE, SIZE_OF_CHAR, SIZE_OF_DOUBLE, SIZE_OF_FLOAT, SIZE_OF_INTEGER, SIZE_OF_LONG, SIZE_OF_RAS_BOOLEAN, SIZE_OF_RAS_BYTE, SIZE_OF_RAS_CHAR, SIZE_OF_RAS_DOUBLE, SIZE_OF_RAS_FLOAT, SIZE_OF_RAS_LONG, SIZE_OF_RAS_SHORT, SIZE_OF_RAS_ULONG, SIZE_OF_RAS_USHORT, SIZE_OF_SHORT, STREAM_INPUT_OVERFLOW, TRANSIENT, TYPE_INVALID, TYPE_NOT_SUPPORTED, TYPE_UNKNOWN, URL_FORMAT_ERROR, WRITE_TRANS_IN_PROGRESS

Constructor Summary

Constructors

Constructor	Description
RasFastScale(java.lang.String collection, OQLQuery queryObject)	Default constructor.

Method Summary

Modifier and Type	Method	Description
RasMInterval	getFullDomain()	Returns the full (unscaled) Domain of the image.
double	getLastScale()	gets the last used scale
protected RasGMArray	getMinimalArray(java.lang.String collection)	gets the minimal array
RasMInterval	getScaledDomain(RasMInterval area, double scale)	gets the scaling domain
java.lang.Object	getScaledImage(RasMInterval trimDomain, double scalingFactor, int domType)	Returns the scaled image.
protected RasMInterval	readFullDomain(java.lang.String collection)	Reads the full domain of the given image.
RasMInterval	scaleGetDomain(RasMInterval areaOp, RasPoint origin, double scale)	Returns the scaled domain of the image.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RasFastScale

public RasFastScale(java.lang.String collection,
                    OQLQuery queryObject)

Default constructor. This constructor gets the name of the image collection and and an OQLQuery object as parameters.

Important:This class does not open its own connection to the database nor start or commit any transactions. This has to be done by the application using FastScale.

Parameters:

collection - the name of the collection containing the image(s)

queryObject - the OQLQuery object for connecting to the database

Method Detail

getScaledImage

public java.lang.Object getScaledImage(RasMInterval trimDomain,
                                       double scalingFactor,
                                       int domType)
                                throws QueryException

Returns the scaled image.

Parameters:

trimDomain - the domain of the desired image sector

scalingFactor - the scaling factor ( values greater than 1 mean magnification, lesser than 1 lead to a reduction )

domType - determines wether the scaling or the trimmimg have to be executed first. Currently only domType=1 is supported by the server.

Throws:

QueryException

getFullDomain

public final RasMInterval getFullDomain()

Returns the full (unscaled) Domain of the image.

Returns:

the original domain of the image

scaleGetDomain

public RasMInterval scaleGetDomain(RasMInterval areaOp,
                                   RasPoint origin,
                                   double scale)
                            throws RasClientInternalException

Returns the scaled domain of the image.

Throws:

RasClientInternalException

readFullDomain

protected RasMInterval readFullDomain(java.lang.String collection)
                               throws RasClientInternalException

Reads the full domain of the given image. This method is called in the RasFastScale constructor.

Parameters:

name - name of the collection containing the image

Returns:

the full domain of the image

Throws:

RasClientInternalException

getMinimalArray

protected RasGMArray getMinimalArray(java.lang.String collection)
                              throws RasClientInternalException

gets the minimal array

Throws:

RasClientInternalException

getScaledDomain

public RasMInterval getScaledDomain(RasMInterval area,
                                    double scale)
                             throws RasClientInternalException

gets the scaling domain

Throws:

RasClientInternalException

getLastScale

public double getLastScale()

gets the last used scale