public boolean catalogAlreadyExists(Connection conn) {
boolean result = false;
try {
List<String> constants = TUtil.newList();
constants.add(CatalogConstants.TB_META);
constants.add(CatalogConstants.TB_SPACES);
constants.add(CatalogConstants.TB_DATABASES);
constants.add(CatalogConstants.TB_TABLES);
constants.add(CatalogConstants.TB_COLUMNS);
constants.add(CatalogConstants.TB_OPTIONS);
constants.add(CatalogConstants.TB_INDEXES);
constants.add(CatalogConstants.TB_STATISTICS);
constants.add(CatalogConstants.TB_PARTITION_METHODS);
constants.add(CatalogConstants.TB_PARTTIONS);
constants.add(CatalogConstants.TB_PARTTION_KEYS);
for (String constant : constants) {
if (checkExistence(conn, DatabaseObjectType.TABLE, constant)) {
return true;
}
}
} catch (SQLException e) {
throw new TajoInternalError(e);
}
return result;
}
public void upgradeBaseSchema(Connection conn, int currentVersion) {
if (!isLoaded()) {
throw new TajoInternalError("Database schema files are not loaded.");
}
final List<SchemaPatch> candidatePatches = new ArrayList<>();
Statement stmt;
for (SchemaPatch patch : this.catalogStore.getPatches()) {
if (currentVersion >= patch.getPriorVersion()) {
candidatePatches.add(patch);
}
}
Collections.sort(candidatePatches);
try {
stmt = conn.createStatement();
} catch (SQLException e) {
throw new TajoInternalError(e);
}
for (SchemaPatch patch : candidatePatches) {
for (DatabaseObject object : patch.getObjects()) {
try {
stmt.executeUpdate(object.getSql());
LOG.info(object.getName() + " " + object.getType() + " was created or altered.");
} catch (SQLException e) {
throw new TajoInternalError(e);
}
}
}
CatalogUtil.closeQuietly(stmt);
}
protected List<DatabaseObject> mergeDatabaseObjects(List<DatabaseObject> objects) {
int maxIdx = -1;
for (DatabaseObject object : objects) {
maxIdx = Math.max(maxIdx, object.getOrder());
}
final List<DatabaseObject> orderedObjects = createListAndFillNull(maxIdx);
final List<DatabaseObject> unorderedObjects = new ArrayList<>();
final List<DatabaseObject> mergedObjects = new ArrayList<>();
for (DatabaseObject object : objects) {
if (object.getOrder() > -1) {
int objIdx = object.getOrder();
if (objIdx < orderedObjects.size() && orderedObjects.get(objIdx) != null) {
throw new TajoInternalError(
"This catalog configuration contains duplicated order of DatabaseObject");
}
orderedObjects.add(objIdx, object);
} else {
unorderedObjects.add(object);
}
}
for (DatabaseObject object : orderedObjects) {
if (object != null) {
mergedObjects.add(object);
}
}
for (DatabaseObject object : unorderedObjects) {
if (object != null) {
mergedObjects.add(object);
}
}
return mergedObjects;
}
protected String[] listFileResources(URL dirURL, String schemaPath, FilenameFilter filter)
throws URISyntaxException, IOException {
String[] files;
String[] tempFiles;
List<String> filesList = new ArrayList<>();
File dirFile = new File(dirURL.toURI());
tempFiles = dirFile.list(filter);
files = new String[tempFiles.length];
for (String fileName : tempFiles) {
filesList.add(schemaPath + "/" + fileName);
}
files = filesList.toArray(files);
return files;
}
public void dropBaseSchema(Connection conn) {
if (!isLoaded()) {
throw new TajoInternalError("Schema files are not loaded yet.");
}
List<DatabaseObject> failedObjects = new ArrayList<>();
Statement stmt = null;
try {
stmt = conn.createStatement();
} catch (SQLException e) {
throw new TajoInternalError(e);
}
for (DatabaseObject object : catalogStore.getSchema().getObjects()) {
try {
if (DatabaseObjectType.TABLE == object.getType()
|| DatabaseObjectType.SEQUENCE == object.getType()
|| DatabaseObjectType.VIEW == object.getType()) {
stmt.executeUpdate(getDropSQL(object.getType(), object.getName()));
}
} catch (SQLException e) {
failedObjects.add(object);
}
}
CatalogUtil.closeQuietly(stmt);
if (failedObjects.size() > 0) {
StringBuffer errorMessage = new StringBuffer(64);
errorMessage.append("Failed to drop database objects ");
for (int idx = 0; idx < failedObjects.size(); idx++) {
DatabaseObject object = failedObjects.get(idx);
errorMessage.append(object.getType().toString()).append(" ").append(object.getName());
if ((idx + 1) < failedObjects.size()) {
errorMessage.append(',');
}
}
LOG.warn(errorMessage.toString());
}
}
protected void loadFromXmlFile(
XMLInputFactory xmlIf, URL filePath, List<StoreObject> storeObjects)
throws IOException, XMLStreamException {
XMLStreamReader xmlReader;
xmlReader = xmlIf.createXMLStreamReader(filePath.openStream());
try {
while (xmlReader.hasNext()) {
if (xmlReader.next() == XMLStreamConstants.START_ELEMENT
&& "store".equals(xmlReader.getLocalName())) {
StoreObject catalogStore = loadCatalogStore(xmlReader);
if (catalogStore != null) {
storeObjects.add(catalogStore);
}
}
}
} finally {
try {
xmlReader.close();
} catch (XMLStreamException ignored) {
}
}
}