/**
* Constructor.
*
* @param manager is the ToolManager.
* @param objectDescriptions are the object descriptions.
*/
public RepositoryConnectionExecutor(
RepositoryConnectionManager manager, RepositoryConnectionDescription[] objectDescriptions) {
super();
thisManager = manager;
returnValues = new RepositoryConnection[objectDescriptions.length];
int i = 0;
while (i < objectDescriptions.length) {
returnMap.put(objectDescriptions[i].getConnectionName(), new Integer(i));
i++;
}
}
/**
* Fetch multiple repository connections at a single time.
*
* @param connectionNames are a list of connection names.
* @return the corresponding repository connection objects.
*/
protected RepositoryConnection[] getRepositoryConnectionsMultiple(String[] connectionNames)
throws ManifoldCFException {
RepositoryConnection[] rval = new RepositoryConnection[connectionNames.length];
HashMap returnIndex = new HashMap();
int i = 0;
while (i < connectionNames.length) {
rval[i] = null;
returnIndex.put(connectionNames[i], new Integer(i));
i++;
}
beginTransaction();
try {
i = 0;
ArrayList params = new ArrayList();
int j = 0;
int maxIn = maxClauseGetRepositoryConnectionsChunk();
while (i < connectionNames.length) {
if (j == maxIn) {
getRepositoryConnectionsChunk(rval, returnIndex, params);
params.clear();
j = 0;
}
params.add(connectionNames[i]);
i++;
j++;
}
if (j > 0) getRepositoryConnectionsChunk(rval, returnIndex, params);
return rval;
} catch (Error e) {
signalRollback();
throw e;
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
}
/**
* Notify the implementing class of the existence of a cached version of the object. The object
* is passed to this method so that the execute() method below will have it available to operate
* on. This method is also called for all objects that are freshly created as well.
*
* @param objectDescription is the unique identifier of the object.
* @param cachedObject is the cached object.
*/
public void exists(ICacheDescription objectDescription, Object cachedObject)
throws ManifoldCFException {
// Cast what came in as what it really is
RepositoryConnectionDescription objectDesc =
(RepositoryConnectionDescription) objectDescription;
RepositoryConnection ci = (RepositoryConnection) cachedObject;
// Duplicate it!
if (ci != null) ci = ci.duplicate();
// In order to make the indexes line up, we need to use the hashtable built by
// the constructor.
returnValues[((Integer) returnMap.get(objectDesc.getConnectionName())).intValue()] = ci;
}
/** Install the manager. */
public void install() throws ManifoldCFException {
// First, get the authority manager table name and name column
IAuthorityGroupManager authMgr = AuthorityGroupManagerFactory.make(threadContext);
// Always use a loop, and no transaction, as we may need to retry due to upgrade
while (true) {
Map existing = getTableSchema(null, null);
if (existing == null) {
// Install the "objects" table.
HashMap map = new HashMap();
map.put(nameField, new ColumnDescription("VARCHAR(32)", true, false, null, null, false));
map.put(
descriptionField,
new ColumnDescription("VARCHAR(255)", false, true, null, null, false));
map.put(
classNameField, new ColumnDescription("VARCHAR(255)", false, false, null, null, false));
map.put(
groupNameField,
new ColumnDescription(
"VARCHAR(32)",
false,
true,
authMgr.getTableName(),
authMgr.getGroupNameColumn(),
false));
map.put(maxCountField, new ColumnDescription("BIGINT", false, false, null, null, false));
map.put(configField, new ColumnDescription("LONGTEXT", false, true, null, null, false));
performCreate(map, null);
} else {
// Upgrade code
ColumnDescription cd = (ColumnDescription) existing.get(groupNameField);
if (cd == null) {
Map addMap = new HashMap();
addMap.put(
groupNameField,
new ColumnDescription(
"VARCHAR(32)",
false,
true,
authMgr.getTableName(),
authMgr.getGroupNameColumn(),
false));
performAlter(addMap, null, null, null);
}
// Get rid of the authorityName field. When we do this we need to copy into the group name
// field, adding groups if they don't yet exist first
cd = (ColumnDescription) existing.get(authorityNameField);
if (cd != null) {
ArrayList params = new ArrayList();
IResultSet set =
performQuery(
"SELECT " + nameField + "," + authorityNameField + " FROM " + getTableName(),
null,
null,
null);
for (int i = 0; i < set.getRowCount(); i++) {
IResultRow row = set.getRow(i);
String repoName = (String) row.getValue(nameField);
String authName = (String) row.getValue(authorityNameField);
if (authName != null && authName.length() > 0) {
// Attempt to create a matching auth group. This will fail if the group
// already exists
IAuthorityGroup grp = authMgr.create();
grp.setName(authName);
try {
authMgr.save(grp);
} catch (ManifoldCFException e) {
if (e.getErrorCode() == ManifoldCFException.INTERRUPTED) throw e;
// Fall through; the row exists already
}
Map<String, String> map = new HashMap<String, String>();
map.put(groupNameField, authName);
params.clear();
String query =
buildConjunctionClause(
params, new ClauseDescription[] {new UnitaryClause(nameField, repoName)});
performUpdate(map, " WHERE " + query, params, null);
}
}
List<String> deleteList = new ArrayList<String>();
deleteList.add(authorityNameField);
performAlter(null, null, deleteList, null);
}
}
// Install dependent tables.
historyManager.install(getTableName(), nameField);
throttleSpecManager.install(getTableName(), nameField);
// Index management
IndexDescription authorityIndex = new IndexDescription(false, new String[] {groupNameField});
IndexDescription classIndex = new IndexDescription(false, new String[] {classNameField});
// Get rid of indexes that shouldn't be there
Map indexes = getTableIndexes(null, null);
Iterator iter = indexes.keySet().iterator();
while (iter.hasNext()) {
String indexName = (String) iter.next();
IndexDescription id = (IndexDescription) indexes.get(indexName);
if (authorityIndex != null && id.equals(authorityIndex)) authorityIndex = null;
else if (classIndex != null && id.equals(classIndex)) classIndex = null;
else if (indexName.indexOf("_pkey") == -1)
// This index shouldn't be here; drop it
performRemoveIndex(indexName);
}
// Add the ones we didn't find
if (authorityIndex != null) performAddIndex(null, authorityIndex);
if (classIndex != null) performAddIndex(null, classIndex);
break;
}
}
/**
* Save a repository connection object.
*
* @param object is the object to save.
* @return true if the object was created, false otherwise.
*/
public boolean save(IRepositoryConnection object) throws ManifoldCFException {
StringSetBuffer ssb = new StringSetBuffer();
ssb.add(getRepositoryConnectionsKey());
ssb.add(getRepositoryConnectionKey(object.getName()));
StringSet cacheKeys = new StringSet(ssb);
while (true) {
// Catch deadlock condition
long sleepAmt = 0L;
try {
ICacheHandle ch = cacheManager.enterCache(null, cacheKeys, getTransactionID());
try {
beginTransaction();
try {
// performLock();
// Notify of a change to the configuration
ManifoldCF.noteConfigurationChange();
boolean isNew = object.getIsNew();
// See whether the instance exists
ArrayList params = new ArrayList();
String query =
buildConjunctionClause(
params,
new ClauseDescription[] {new UnitaryClause(nameField, object.getName())});
IResultSet set =
performQuery(
"SELECT * FROM " + getTableName() + " WHERE " + query + " FOR UPDATE",
params,
null,
null);
HashMap values = new HashMap();
values.put(descriptionField, object.getDescription());
values.put(classNameField, object.getClassName());
values.put(groupNameField, object.getACLAuthority());
values.put(maxCountField, new Long((long) object.getMaxConnections()));
String configXML = object.getConfigParams().toXML();
values.put(configField, configXML);
boolean notificationNeeded = false;
boolean isCreated;
if (set.getRowCount() > 0) {
// If the object is supposedly new, it is bad that we found one that already exists.
if (isNew)
throw new ManifoldCFException(
"Repository connection '" + object.getName() + "' already exists");
isCreated = false;
IResultRow row = set.getRow(0);
String oldXML = (String) row.getValue(configField);
if (oldXML == null || !oldXML.equals(configXML)) notificationNeeded = true;
// Update
params.clear();
query =
buildConjunctionClause(
params,
new ClauseDescription[] {new UnitaryClause(nameField, object.getName())});
performUpdate(values, " WHERE " + query, params, null);
throttleSpecManager.deleteRows(object.getName());
} else {
// If the object is not supposed to be new, it is bad that we did not find one.
if (!isNew)
throw new ManifoldCFException(
"Repository connection '" + object.getName() + "' no longer exists");
isCreated = true;
// Insert
values.put(nameField, object.getName());
// We only need the general key because this is new.
performInsert(values, null);
}
// Write secondary table stuff
throttleSpecManager.writeRows(object.getName(), object);
// If notification required, do it.
if (notificationNeeded) {
IJobManager jobManager = JobManagerFactory.make(threadContext);
jobManager.noteConnectionChange(object.getName());
}
cacheManager.invalidateKeys(ch);
return isCreated;
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} catch (Error e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
} finally {
cacheManager.leaveCache(ch);
}
} catch (ManifoldCFException e) {
// Is this a deadlock exception? If so, we want to try again.
if (e.getErrorCode() != ManifoldCFException.DATABASE_TRANSACTION_ABORT) throw e;
sleepAmt = getSleepAmt();
} finally {
sleepFor(sleepAmt);
}
}
}