/**
* replace into low-level store content of Fedora object already in lowlevel store
*
* @return
*/
public final long replace(String pid, InputStream content, Map<String, String> hints)
throws LowlevelStorageException {
String filePath;
File file = null;
try {
filePath = pathRegistry.get(pid);
} catch (ObjectNotInLowlevelStorageException ffff) {
LowlevelStorageException noPath =
new LowlevelStorageException(false, "pid " + pid + " not in registry", ffff);
throw noPath;
}
if (filePath == null || filePath.equals("")) { // guard against registry
// implementation
LowlevelStorageException nullPath =
new LowlevelStorageException(true, "pid " + pid + " not in registry");
throw nullPath;
}
try {
file = new File(filePath);
} catch (Exception eFile) { // purposefully general catch-all
LowlevelStorageException newFile =
new LowlevelStorageException(true, "couldn't make new File for " + filePath, eFile);
throw newFile;
}
long result = fileSystem.rewrite(file, content);
if (hints != null && hints.containsKey(IrodsLowlevelStorageModule.STORAGE_LEVEL_HINT)) {
fileSystem.setStorageLevel(file, hints.get(IrodsLowlevelStorageModule.STORAGE_LEVEL_HINT));
}
return result;
}
/** remove Fedora object from low-level store */
public final void remove(String pid) throws LowlevelStorageException {
String filePath;
File file = null;
try {
filePath = pathRegistry.get(pid);
} catch (ObjectNotInLowlevelStorageException eReg) {
throw eReg;
}
if (filePath == null || filePath.equals("")) { // guard against registry
// implementation
LowlevelStorageException nullPath =
new LowlevelStorageException(true, "null path from registry for pid " + pid);
throw nullPath;
}
try {
file = new File(filePath);
} catch (Exception eFile) { // purposefully general catch-all
LowlevelStorageException newFile =
new LowlevelStorageException(true, "couldn't make File for " + filePath, eFile);
throw newFile;
}
pathRegistry.remove(pid);
fileSystem.delete(file);
}
/** get content of Fedora object from low-level store */
public final InputStream retrieve(String pid) throws LowlevelStorageException {
String filePath = this.getIrodsPath(pid);
File file;
try {
filePath = this.getIrodsPath(pid);
} catch (ObjectNotInLowlevelStorageException eReg) {
throw eReg;
}
if (filePath == null || filePath.equals("")) { // guard against registry
// implementation
LowlevelStorageException nullPath =
new LowlevelStorageException(true, "null path from registry for pid " + pid);
throw nullPath;
}
try {
file = new File(filePath);
} catch (Exception eFile) { // purposefully general catch-all
LowlevelStorageException newFile =
new LowlevelStorageException(true, "couldn't make File for " + filePath, eFile);
throw newFile;
}
return fileSystem.read(file);
}
public IRODSQueryResultSet getMetadata(String pid) throws LowlevelStorageException {
String filePath;
filePath = pathRegistry.get(pid);
if (filePath == null || filePath.equals("")) { // guard against registry
// implementation
LowlevelStorageException nullPath =
new LowlevelStorageException(true, "null path from registry for pid " + pid);
throw nullPath;
}
return fileSystem.getMetadata(filePath);
}
/**
* add to lowlevel store content of Fedora object not already in lowlevel store
*
* @return
*/
public final long add(String pid, InputStream content, Map<String, String> hints)
throws LowlevelStorageException {
String filePath;
File file = null;
try { // check that object is not already in store
filePath = pathRegistry.get(pid);
ObjectAlreadyInLowlevelStorageException already =
new ObjectAlreadyInLowlevelStorageException("" + pid);
throw already;
} catch (ObjectNotInLowlevelStorageException not) {
// OK: keep going
}
filePath = pathAlgorithm.get(pid);
if (filePath == null || filePath.equals("")) { // guard against
// algorithm
// implementation
LowlevelStorageException nullPath =
new LowlevelStorageException(true, "null path from algorithm for pid " + pid);
throw nullPath;
}
try {
file = new File(filePath);
} catch (Exception eFile) { // purposefully general catch-all
LowlevelStorageException newFile =
new LowlevelStorageException(true, "couldn't make File for " + filePath, eFile);
throw newFile;
}
long size = fileSystem.write(file, content);
if (hints != null && hints.containsKey(IrodsLowlevelStorageModule.STORAGE_LEVEL_HINT)) {
fileSystem.setStorageLevel(file, hints.get(IrodsLowlevelStorageModule.STORAGE_LEVEL_HINT));
}
pathRegistry.put(pid, filePath);
irodsPathCache.put(pid, filePath);
return size;
}
