/**
* writeLink Write both data link or group link depending on the given path.
*
* @param pnSrcPath path of node targeted by the link
* @param prRelPath path of node wearing the link
* @throws NexusException
*/
protected void writeLink(PathNexus pnSrcPath, PathNexus prRelPath) throws NexusException {
PathData pdDestNode;
// Check the source node is well designed
if (pnSrcPath.isRelative())
throw new NexusException("Path is invalid: the targeted path must be absolute!");
// Ensure the wearing node is a DataItem
if (prRelPath.getDataItemName() == null) {
PathGroup pgDest = new PathGroup(prRelPath.clone());
pdDestNode = new PathData(pgDest, generateDataName((PathGroup) pgDest, DataItem_LINK));
} else pdDestNode = (PathData) prRelPath;
// Check the link is valid
// PathNexus pnTgtPath = checkRelativeLinkTarget(prRelPath, pdDestNode);
// Open path to get the corresponding NXlink
openPath(pnSrcPath);
NXlink nlLink = getNXlink();
// Create the source path if needed and open it
createPath(pdDestNode, true);
// Write the link
getNexusFile().makenamedlink(pdDestNode.getDataItemName(), nlLink);
// Update node list buffer
NexusNode nnNode = pdDestNode.getCurrentNode();
pushNodeInBuffer(nnNode.getNodeName(), nnNode.getClassName());
}
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;
}
/** getDescendantsDatas Read all DataItems that are descendants of the currently opened group */
protected Stack<DataItem> getDescendantsDatas() throws NexusException {
Stack<DataItem> sDatas = new Stack<DataItem>();
// Get all direct descendants' datas
sDatas.addAll(getChildrenDatas());
// Get all direct descendants group
ArrayList<NexusNode> nodes = listChildren();
// Start recursion
for (NexusNode node : nodes) {
if (node.isGroup()) {
openNode(node);
sDatas.addAll(getDescendantsDatas());
closeGroup();
}
}
return sDatas;
}
/**
* getChildrenDatas Scan currently opened group, to get all direct descendants' DataItem and
* instrument informations (such as NXtechnical_data). Then return a list of DataItem.
*
* @throws NexusException
*/
@SuppressWarnings("unchecked")
protected Stack<DataItem> getChildrenDatas() throws NexusException {
// Defining variables
NexusNode node;
ArrayList<NexusNode> alNodeList;
Stack<DataItem> alDataItem = new Stack<DataItem>();
// Parse children
alNodeList = (ArrayList<NexusNode>) listChildren().clone();
for (int iIndex = 0; iIndex < alNodeList.size(); iIndex++) {
node = alNodeList.get(iIndex);
if (!node.isGroup()) {
openData(node.getNodeName());
alDataItem.push(getDataItem());
closeData();
}
}
alDataItem.trimToSize();
return alDataItem;
}
/**
* CopyNode make a full copy of the current source node (itself and its descendants) into the
* currently opened destination path. The copy cares of all nodes' attributes.
*
* @param nfrSource handler on the opened source file
*/
protected void copyNode(NexusFileReader nfrSource) throws NexusException {
// Keep in buffer current path (used for recursion process)
PathNexus pnSrcPath = nfrSource.getCurrentRealPath().clone();
PathNexus pnTgtPath = getCurrentRealPath().clone();
NexusNode nnCurNode = pnSrcPath.getCurrentNode();
if (getCurrentRealPath().getCurrentNode() != null
&& !getCurrentRealPath().getCurrentNode().isRealGroup())
throw new NexusException(
"Invalid destination path: only a group can contain nodes!\n" + getCurrentRealPath());
// Check the kind of the node
if (nnCurNode == null
|| nnCurNode.isGroup()
|| "NXtechnical_data".equals(nnCurNode.getClassName())) {
// Copy the current group
PathNexus pnPath = pnTgtPath.clone();
if (nnCurNode != null) pnPath.pushNode(nnCurNode);
createPath(pnPath, true);
copyAllAttr(nfrSource);
// Copy all its descendants
ArrayList<NexusNode> nodes = nfrSource.listChildren();
for (NexusNode node : nodes) {
nfrSource.openNode(node);
copyNode(nfrSource);
}
} else {
// Copy the current DataItem
PathData pdDstPath = new PathData(pnTgtPath.getNodes(), nnCurNode.getNodeName());
DataItem dsData = nfrSource.getDataItem();
writeData(dsData, pdDstPath);
}
// Return back to the original position in both source and destination files
closeAll();
openPath(pnTgtPath);
nfrSource.closeAll();
nfrSource.openPath(pnSrcPath.getParentPath());
}
protected DataItem getDataItem(int iRank) throws NexusException {
DataItem dataItem;
NexusNode nnNode = getCurrentPath().getCurrentNode();
String sNodeName = nnNode.getNodeName();
String sNodeClass = nnNode.getClassName();
// If encountered a DataItem get its datas
if (!nnNode.isGroup() && !sNodeClass.equals("NXtechnical_data")) {
dataItem = readDataItem(iRank);
dataItem.setNodeName(sNodeName);
return dataItem;
}
// else if we encountered a NXtechnical_data group: we get its "data"
// and "description"
else if (!nnNode.isGroup() && sNodeClass.equals("NXtechnical_data")) {
// Get the "data" node
openData("data");
dataItem = readDataItem(iRank);
dataItem.setNodeName(sNodeName);
closeData();
// Try to get a description for the technical data
try {
// Set to "data" as description attribute the "description" node
// beside
openData("description");
dataItem.setDesc(readDataItem(iRank).getData());
closeData();
} catch (NexusException ne) {
closeData();
}
dataItem.setPath(getCurrentPath().clone());
return dataItem;
} else {
return null;
}
}
/**
* 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;
}
protected void createPath(PathNexus paPath, boolean bKeepOpen) throws NexusException {
String sCurClass = ""; // Class name of the group we are processing
String sCurName = ""; // Name of the group we are processing
NexusNode nCurStep = null; // Currently opened node name in the NexusFile
int iCurDepth = 0; // Current depth in the path
int iPathDepth = paPath.getDepth();
// Return to root node
closeAll();
// Create each group
NexusNode nnNode;
while (iCurDepth < iPathDepth) {
// Determine group and class names
nnNode = paPath.getNode(iCurDepth);
sCurName = nnNode.getNodeName();
sCurClass = nnNode.getClassName();
// Create appropriate group and open it
nCurStep = getCurrentRealPath().getCurrentNode();
if (nnNode.isGroup() || "NXtechnical_data".equals(nnNode.getClassName())) {
try {
openGroup(sCurName, sCurClass);
} catch (NexusException ne) {
// Ensure we are still in the expected group
if (nCurStep != null && !nCurStep.equals(getCurrentRealPath().getCurrentNode()))
closeGroup();
// Create the requested group
getNexusFile().makegroup(sCurName, sCurClass);
// Force the buffer node list to be updated
pushNodeInBuffer(sCurName, sCurClass);
// Open created group
openGroup(sCurName, sCurClass);
}
}
// Go one step forward in path
iCurDepth++;
}
// Return to root node if necessary
if (!bKeepOpen) closeAll();
}
