/**
* checkData Check if given data fits the currently opened DataItem
*
* @param dsData DataItem properly initiated containing data to compare with current node
* @throws NexusException if node and data aren't compatible
*/
protected void checkDataMatch(DataItem dsData) throws NexusException {
// Get infos on DataItem (data type, rank, dimsize)
int[] iDimSize = dsData.getSize(); // DataItem dimension's sizes
int[] iNodSize = new int[RANK_MAX]; // whole DataItem dimension's sizes
int[] iDataInf = new int[2]; // iDataInf[0] = DataItem rank ;
// iDataInf[1] = data type
openFile();
getNexusFile().getinfo(iNodSize, iDataInf);
closeFile();
// Checking type compatibility
if (dsData.getType() != iDataInf[1]) {
throw new NexusException("Datas and target node do not have compatible type!");
}
// Checking rank compatibility
if (iDimSize.length > iDataInf[0]) {
throw new NexusException("Datas and target node do not have compatible rank!");
}
// Checking dimensions sizes compatibility
{
// The dimensions to check of the opened DataItem are
// iDimSize.length
// last ones
int iDim = (iDataInf[0] - iDimSize.length);
for (; iDim < iDataInf[0]; iDim++) {
if (iDimSize[iDim + iDimSize.length - iDataInf[0]] != iNodSize[iDim])
throw new NexusException("Datas and target node do not have compatible dimension sizes!");
}
}
}
/**
* readDataItem Return all datas and attributes of the currently opened DataItem
*
* @param iDataRank rank of the required data (1 spectrum, 2 images...) (optional)
* @note if no rank is given, value of the DataItem will be return integrally: all slabs will be
* taken as one entire data
*/
private DataItem readDataItem(int iDataRank) throws NexusException {
DataItem dsData = readDataInfo();
int[] dataInf = new int[] {dsData.getSize().length, dsData.getType()};
Object data = readNodeValue(dataInf, dsData.getSize(), iDataRank);
if (dsData.getType() == NexusFile.NX_CHAR) {
dsData.setData(data);
} else {
dsData.setData(new SoftReference<Object>(data));
}
dsData.isSingleRawArray(m_bResultAsSingleRaw);
return dsData;
}
protected DataItem getDataItem(int[] iStartPos, int[] iShape) throws NexusException {
DataItem dsData = readDataInfo();
NexusNode nnNode = getCurrentPath().getCurrentNode();
String sNodeClass = nnNode.getClassName();
if (!sNodeClass.equals("NXtechnical_data")) {
dsData.setStart(iStartPos);
dsData.setSlabSize(iShape);
int[] iDataInf = new int[] {dsData.getSize().length, dsData.getType()};
// We want a iNbDim dimension array of data, so dimensions are the
// iNbDim last ones of the opened DataItem
int[] length = {1};
for (int iDim : iShape) {
length[0] *= iDim;
}
// Prepare an array data
Object oOutput;
Object oInput = defineArrayObject(iDataInf[1], length);
// Set data into temporary array having a single raw shape
openFile();
getNexusFile().getslab(iStartPos, iShape, oInput);
closeFile();
if (m_bResultAsSingleRaw) {
oOutput = oInput;
} else {
// Changing the array into matrix (having iDimSize dimensions'
// sizes) instead of single row
oOutput = defineArrayObject(iDataInf[1], iShape);
}
// Converting byte[] to string in case of NX_CHAR data
if (iDataInf[1] == NexusFile.NX_CHAR) {
oOutput = new String((byte[]) oOutput).toCharArray();
}
// Setting DataItem's data
if (iDataInf[1] == NexusFile.NX_BOOLEAN) {
oOutput = convertArray(new DataItem(oOutput));
}
dsData.setData(new SoftReference<Object>(oOutput));
}
dsData.isSingleRawArray(m_bResultAsSingleRaw);
return dsData;
}
/**
* makeData Create a DataItem named sDataName that fit dsData in the currently opened group:
* detecting type, size and dim
*
* @param sDataName name of the DataItem to create
* @param oData shape of data that the DataItem will have to contain
*/
protected void makeData(String sDataName, DataItem dsData) throws NexusException {
/* ******** Warning: jnexus API doesn't support NX_INT64 for writing
* those lines convert NX_INT64 into NX_FLOAT64, so long to double
// Converting long as double because the JAVA Nexus API uses C++ native methods whom don't support integer 64 bit
if( dsData.getType() == NexusFile.NX_INT64 )
{
dsData.setData(convertArray(dsData));
dsData.setType(NexusFile.NX_FLOAT64);
}
*/
long iLength = 1;
int[] iDimSize = dsData.getSize();
int iType = dsData.getType();
int iRank = iDimSize.length;
for (int i = 0; i < iRank; i++) {
iLength *= iDimSize[i];
}
// Create the DataItem
if (m_bCompressed && iLength > 1000 && iType != NexusFile.NX_CHAR) {
getNexusFile()
.compmakedata(sDataName, iType, iRank, iDimSize, NexusFile.NX_COMP_LZW, iDimSize);
} else {
getNexusFile().makedata(sDataName, iType, iRank, iDimSize);
}
// Update the buffer node list
pushNodeInBuffer(sDataName, "SDS");
// Init DataItem of type NX_CHAR
if (iType == NexusFile.NX_CHAR) {
openData(sDataName);
Object oBuffer = defineArrayObject(iType, iDimSize);
Arrays.fill((byte[]) oBuffer, (Byte) initTypeFromNexus(iType));
getNexusFile().putdata(oBuffer);
oBuffer = null;
closeData();
}
}
/**
* readDataInfo Return the DataItem fitting the opened DataItem, without main data. The DataItem
* is initialized with dimsize, type... but the DataItem isn't read.
*/
public DataItem readDataInfo() throws NexusException {
NexusNode nnNode = getCurrentPath().getCurrentNode();
if (!nnNode.isGroup() && nnNode.getClassName().equals("NXtechnical_data")) {
return getDataItem();
}
// Get infos on DataItem (data type, rank, dimsize)
int[] iNodeSize = new int[RANK_MAX]; // whole DataItem dimension's sizes
int[] iDimSize; // data dimension's sizes
int[] iDataInf = new int[2]; // iDataInf[0] = DataItem rank ;
// iDataInf[1]= data type
openFile();
getNexusFile().getinfo(iNodeSize, iDataInf);
// Initialize dimension's sizes
iDimSize = new int[iDataInf[0]];
System.arraycopy(iNodeSize, 0, iDimSize, 0, iDataInf[0]);
// Check if DataItem is linked to an external DataItem
DataItem dsData = new DataItem();
dsData.setType(iDataInf[1]);
dsData.setSize(iDimSize);
dsData.setSlabSize(iDimSize);
dsData.setStart(new int[iDimSize.length]);
dsData.setNodeName(getCurrentPath().getDataItemName());
dsData.setPath(getCurrentPath().clone());
dsData.isSingleRawArray(m_bResultAsSingleRaw);
if (dsData.getType() == NexusFile.NX_CHAR) {
dsData.setData(readNodeValue(iDataInf, dsData.getSize(), iDimSize.length));
}
closeFile();
// Initialize DataItem's attributes
getDataItemAttribute(dsData);
return dsData;
}