private void recalcHashes(DataNode item) throws IOException {
if (item.dirty == null) {
return; // not dirty, which means no children are dirty
}
// only directories have derived hashes
if (item instanceof DirectoryNode) {
DirectoryNode dirNode = (DirectoryNode) item;
for (DataNode child : dirNode) {
recalcHashes(child);
}
ByteArrayOutputStream bout = new ByteArrayOutputStream();
hashCalc.sort(dirNode.getChildren());
String newHash = hashCalc.calcHash(dirNode, bout);
item.setHash(newHash);
byte[] arrTriplets = bout.toByteArray();
blobStore.setBlob(newHash, arrTriplets);
log.info(
"recalcHashes: "
+ item.name
+ " children:"
+ dirNode.members.size()
+ " hash="
+ newHash);
}
}
public DataNode find(Path path) {
if (path.isRoot()) {
return rootDataNode;
} else {
DataNode parent = find(path.getParent());
if (parent == null) {
return null;
} else if (parent instanceof DirectoryNode) {
DirectoryNode dirNode = (DirectoryNode) parent;
return dirNode.get(path.getName());
} else {
return null;
}
}
}
/**
* Rename this Entry. This operation will fail if:
*
* <p>There is a sibling Entry (i.e., an Entry whose parent is the same as this Entry's parent)
* with the same name.
*
* <p>This Entry is the root of the Entry tree. Its name is dictated by the Filesystem and many
* not be changed.
*
* @param newName the new name for this Entry
* @return true if the operation succeeded, else false
*/
public boolean renameTo(final String newName) {
boolean rval = false;
if (!isRoot()) {
rval = _parent.changeName(getName(), newName);
}
return rval;
}
/**
* Delete this Entry. This operation should succeed, but there are special circumstances when it
* will not:
*
* <p>If this Entry is the root of the Entry tree, it cannot be deleted, as there is no way to
* create another one.
*
* <p>If this Entry is a directory, it cannot be deleted unless it is empty.
*
* @return true if the Entry was successfully deleted, else false
*/
public boolean delete() {
boolean rval = false;
if ((!isRoot()) && isDeleteOK()) {
rval = _parent.deleteEntry(this);
}
return rval;
}
/**
* Move this item to a new parent, or to a new name, or both
*
* @param newParent
*/
public void move(DirectoryNode newParent, String newName) {
DirectoryNode oldParent = this.getParent();
if (oldParent != newParent) {
this.setParent(newParent);
if (oldParent.members != null) {
oldParent.members.remove(this);
}
newParent.getChildren().add(this);
setDirty();
newParent.setDirty();
oldParent.setDirty();
}
if (!newName.equals(name)) {
setName(newName);
}
parent.checkConsistency(this);
}
protected void setDirty() {
if (dirty != null) {
return; // already set
}
dirty = Boolean.TRUE;
if (parent != null) {
parent.setDirty();
}
}
@Override
public void copy(DirectoryNode newDir, String newName) {
newDir.addFile(newName, this.hash);
}
public void delete() {
parent.getChildren().remove(this);
parent.checkConsistency(parent);
setDirty();
}