/**
* 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());
}
/**
* createDataItem Create all groups defined into the path, then create a DataItem matching type,
* dimensions sizes of the given DataItem item. When the creation process is done it close if
* asked all node to rturn bacxk to document's root.
*
* @param dsData DataItem item which created DataItem will match
* @param paPath Path into which the given DataItem will be created
* @param bKeepOpen boolean telling if the path should be keep opened after work
* @return true if the node was existing yet , false if the process created a node. The purpose of
* this return is to tell whether data compatibility should be checked before writing it
*/
protected boolean createDataItem(DataItem dsData, PathNexus pnPath, boolean bKeepOpen)
throws NexusException {
// Checking path contains a DataItem name
String sDataItemName = pnPath.getDataItemName();
if (sDataItemName == null)
throw new NexusException("Path is invalid: no DataItem name specified to store data!");
// Open path (or create it if needed)
createPath(pnPath, true);
// Open DataItem (or create it if needed)
boolean bCheckData;
try {
openData(sDataItemName);
bCheckData = true;
} catch (NexusException ne) {
makeData(sDataItemName, dsData);
openData(sDataItemName);
bCheckData = false;
}
if (!bKeepOpen) closeAll();
return bCheckData;
}
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();
}
/**
* 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());
}
/**
* checkLinkTarget open the target file and check if pointed data is a DataItem. Returns a string
* array of two elements. The first is the attribute to distinguish if a DataItem or nxgroup is
* pointed, the seconds is the full sibling path (completed by missing class or names).
*
* @param prTgtPath pointed node by the link
* @param paSrcPath path of the starting node for the relative link
* @return the corresponding absolute path if found, else return null
*/
protected PathNexus checkRelativeLinkTarget(PathNexus prTgtPath, PathData paSrcPath) {
PathNexus pnTarget = null;
if (paSrcPath.isRelative()) return null;
// Construct an absolute path using the source and the target
if (!prTgtPath.isRelative()) pnTarget = prTgtPath;
// Try to open the requested absolute path
try {
if (pnTarget == null) {
PathRelative prRelTgtPath = new PathRelative(prTgtPath);
pnTarget = prRelTgtPath.generateAbsolutePath((PathNexus) paSrcPath);
}
openPath(pnTarget);
pnTarget = getCurrentPath().clone();
closeAll();
return pnTarget;
} catch (NexusException ne) {
return null;
}
}
