private void deleteDefaultCluster(final OClass clazz) {
final ODatabaseDocumentInternal database = getDatabase();
final int clusterId = clazz.getDefaultClusterId();
final OCluster cluster = database.getStorage().getClusterById(clusterId);
if (cluster.getName().equalsIgnoreCase(clazz.getName()))
database.getStorage().dropCluster(clusterId, true);
// FREE THE RECORD CACHE
getDatabase().getLocalCache().freeCluster(clusterId);
}
/*
* (non-Javadoc)
*
* @see com.orientechnologies.orient.core.metadata.schema.OSchema#dropClass(java.lang.String)
*/
public void dropClass(final String className) {
final ODatabaseDocumentInternal db = getDatabase();
final OStorage storage = db.getStorage();
final StringBuilder cmd;
acquireSchemaWriteLock();
try {
if (getDatabase().getTransaction().isActive())
throw new IllegalStateException("Cannot drop a class inside a transaction");
if (className == null) throw new IllegalArgumentException("Class name is null");
getDatabase().checkSecurity(ORule.ResourceGeneric.SCHEMA, ORole.PERMISSION_DELETE);
final String key = className.toLowerCase();
OClass cls = classes.get(key);
if (cls == null)
throw new OSchemaException("Class '" + className + "' was not found in current database");
if (!cls.getSubclasses().isEmpty())
throw new OSchemaException(
"Class '"
+ className
+ "' cannot be dropped because it has sub classes. Remove the dependencies before trying to drop it again");
cmd = new StringBuilder("drop class ");
cmd.append(className);
cmd.append(" unsafe");
if (isDistributedCommand()) {
final OAutoshardedStorage autoshardedStorage = (OAutoshardedStorage) storage;
OCommandSQL commandSQL = new OCommandSQL(cmd.toString());
commandSQL.addExcludedNode(autoshardedStorage.getNodeId());
db.command(commandSQL).execute();
dropClassInternal(className);
} else if (storage instanceof OStorageProxy) {
final OCommandSQL commandSQL = new OCommandSQL(cmd.toString());
db.command(commandSQL).execute();
reload();
} else dropClassInternal(className);
// FREE THE RECORD CACHE
getDatabase().getLocalCache().freeCluster(cls.getDefaultClusterId());
} finally {
releaseSchemaWriteLock();
}
}
@Override
public int hashCode() {
final int prime = 31;
int result = super.hashCode();
result = prime * result + ((owner == null) ? 0 : owner.hashCode());
return result;
}
private void dropClassIndexes(final OClass cls) {
final ODatabaseDocument database = getDatabase();
final OIndexManager indexManager = database.getMetadata().getIndexManager();
for (final OIndex<?> index : indexManager.getClassIndexes(cls.getName()))
indexManager.dropIndex(index.getName());
}
@Override
public Set<OClass> getClassesRelyOnCluster(final String clusterName) {
getDatabase().checkSecurity(ORule.ResourceGeneric.SCHEMA, ORole.PERMISSION_READ);
acquireSchemaReadLock();
try {
final int clusterId = getDatabase().getClusterIdByName(clusterName);
final Set<OClass> result = new HashSet<OClass>();
for (OClass c : classes.values()) {
if (OArrays.contains(c.getPolymorphicClusterIds(), clusterId)) result.add(c);
}
return result;
} finally {
releaseSchemaReadLock();
}
}
private void removeClusterClassMap(final OClass cls) {
if (!clustersCanNotBeSharedAmongClasses) return;
for (int clusterId : cls.getClusterIds()) {
if (clusterId < 0) continue;
clustersToClasses.remove(clusterId);
}
}
private void dropClassInternal(final String className) {
acquireSchemaWriteLock();
try {
if (getDatabase().getTransaction().isActive())
throw new IllegalStateException("Cannot drop a class inside a transaction");
if (className == null) throw new IllegalArgumentException("Class name is null");
getDatabase().checkSecurity(ORule.ResourceGeneric.SCHEMA, ORole.PERMISSION_DELETE);
final String key = className.toLowerCase();
final OClass cls = classes.get(key);
if (cls == null)
throw new OSchemaException("Class '" + className + "' was not found in current database");
if (!cls.getSubclasses().isEmpty())
throw new OSchemaException(
"Class '"
+ className
+ "' cannot be dropped because it has sub classes. Remove the dependencies before trying to drop it again");
checkEmbedded(getDatabase().getStorage());
for (OClass superClass : cls.getSuperClasses()) {
// REMOVE DEPENDENCY FROM SUPERCLASS
((OClassImpl) superClass).removeBaseClassInternal(cls);
}
deleteDefaultCluster(cls);
dropClassIndexes(cls);
classes.remove(key);
if (cls.getShortName() != null)
// REMOVE THE ALIAS TOO
classes.remove(cls.getShortName().toLowerCase());
removeClusterClassMap(cls);
} finally {
releaseSchemaWriteLock();
}
}
@Override
public void merge(ImmutableOntologyVocabulary v) {
if (v instanceof OntologyVocabularyImpl) {
OntologyVocabularyImpl vi = (OntologyVocabularyImpl) v;
concepts.putAll(vi.concepts);
objectProperties.putAll(vi.objectProperties);
dataProperties.putAll(vi.dataProperties);
annotationProperties.putAll(vi.annotationProperties);
} else {
for (OClass oc : v.getClasses())
if (!oc.isTop() && !oc.isBottom()) concepts.put(oc.getName(), oc);
for (ObjectPropertyExpression ope : v.getObjectProperties())
if (!ope.isTop() && !ope.isBottom()) objectProperties.put(ope.getName(), ope);
for (DataPropertyExpression dpe : v.getDataProperties())
if (!dpe.isTop() && !dpe.isBottom()) dataProperties.put(dpe.getName(), dpe);
for (AnnotationProperty ap : v.getAnnotationProperties())
annotationProperties.put(ap.getName(), ap);
}
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!super.equals(obj)) return false;
if (getClass() != obj.getClass()) return false;
OProperty other = (OProperty) obj;
if (owner == null) {
if (other.owner != null) return false;
} else if (!owner.equals(other.owner)) return false;
return true;
}
void checkClusterCanBeAdded(int clusterId, OClass cls) {
acquireSchemaReadLock();
try {
if (!clustersCanNotBeSharedAmongClasses) return;
if (clusterId < 0) return;
final OClass existingCls = clustersToClasses.get(clusterId);
if (existingCls != null && !cls.equals(existingCls))
throw new OSchemaException(
"Cluster with id "
+ clusterId
+ " already belongs to class "
+ clustersToClasses.get(clusterId));
} finally {
releaseSchemaReadLock();
}
}
@OBeforeSerialization
public ODocument toStream() {
document.field("name", name);
document.field("type", type.id);
document.field("offset", offset);
document.field("mandatory", mandatory);
document.field("notNull", notNull);
document.field("min", min);
document.field("max", max);
document.field("linkedClass", linkedClass != null ? linkedClass.getName() : null);
document.field("linkedType", linkedType != null ? linkedType.id : null);
// SAVE THE INDEX
if (index != null) {
index.lazySave();
document.field("index", index.getRID());
document.field("index-type", index.getType());
} else {
document.field("index", ORecordId.EMPTY_RECORD_ID);
}
return document;
}
void addClusterForClass(final int clusterId, final OClass cls) {
acquireSchemaWriteLock();
try {
if (!clustersCanNotBeSharedAmongClasses) return;
if (clusterId < 0) return;
final OStorage storage = getDatabase().getStorage();
checkEmbedded(storage);
final OClass existingCls = clustersToClasses.get(clusterId);
if (existingCls != null && !cls.equals(existingCls))
throw new OSchemaException(
"Cluster with id "
+ clusterId
+ " already belongs to class "
+ clustersToClasses.get(clusterId));
clustersToClasses.put(clusterId, cls);
} finally {
releaseSchemaWriteLock();
}
}
public OProperty setDirty() {
document.setDirty();
if (owner != null) owner.setDirty();
return this;
}
private OClass doCreateClass(
final String className, final int[] clusterIds, int retry, OClass... superClasses)
throws ClusterIdsAreEmptyException {
OClass result;
final ODatabaseDocumentInternal db = getDatabase();
final OStorage storage = db.getStorage();
StringBuilder cmd = null;
getDatabase().checkSecurity(ORule.ResourceGeneric.SCHEMA, ORole.PERMISSION_CREATE);
acquireSchemaWriteLock();
try {
final String key = className.toLowerCase();
if (classes.containsKey(key) && retry == 0)
throw new OSchemaException("Class " + className + " already exists in current database");
if (!isDistributedCommand()) checkClustersAreAbsent(clusterIds);
cmd = new StringBuilder("create class ");
// if (getDatabase().getStorage().getConfiguration().isStrictSql())
// cmd.append('`');
cmd.append(className);
// if (getDatabase().getStorage().getConfiguration().isStrictSql())
// cmd.append('`');
List<OClass> superClassesList = new ArrayList<OClass>();
if (superClasses != null && superClasses.length > 0) {
boolean first = true;
for (OClass superClass : superClasses) {
// Filtering for null
if (superClass != null) {
if (first) cmd.append(" extends ");
else cmd.append(", ");
cmd.append(superClass.getName());
first = false;
superClassesList.add(superClass);
}
}
}
if (clusterIds != null) {
if (clusterIds.length == 1 && clusterIds[0] == -1) cmd.append(" abstract");
else {
cmd.append(" cluster ");
for (int i = 0; i < clusterIds.length; ++i) {
if (i > 0) cmd.append(',');
else cmd.append(' ');
cmd.append(clusterIds[i]);
}
}
}
if (isDistributedCommand()) {
createClassInternal(className, clusterIds, superClassesList);
final OAutoshardedStorage autoshardedStorage = (OAutoshardedStorage) storage;
OCommandSQL commandSQL = new OCommandSQL(cmd.toString());
commandSQL.addExcludedNode(autoshardedStorage.getNodeId());
final Object res = db.command(commandSQL).execute();
} else if (storage instanceof OStorageProxy) {
db.command(new OCommandSQL(cmd.toString())).execute();
reload();
} else createClassInternal(className, clusterIds, superClassesList);
result = classes.get(className.toLowerCase());
// WAKE UP DB LIFECYCLE LISTENER
for (Iterator<ODatabaseLifecycleListener> it = Orient.instance().getDbLifecycleListeners();
it.hasNext(); ) it.next().onCreateClass(getDatabase(), result);
} finally {
releaseSchemaWriteLock();
}
return result;
}
private OClass createClassInternal(
final String className, final int[] clusterIdsToAdd, final List<OClass> superClasses)
throws ClusterIdsAreEmptyException {
acquireSchemaWriteLock();
try {
if (className == null || className.length() == 0)
throw new OSchemaException("Found class name null or empty");
if (Character.isDigit(className.charAt(0)))
throw new OSchemaException("Found invalid class name. Cannot start with numbers");
final Character wrongCharacter = checkClassNameIfValid(className);
if (wrongCharacter != null)
throw new OSchemaException(
"Found invalid class name. Character '"
+ wrongCharacter
+ "' cannot be used in class name.");
final ODatabaseDocumentInternal database = getDatabase();
final OStorage storage = database.getStorage();
checkEmbedded(storage);
checkClustersAreAbsent(clusterIdsToAdd);
final int[] clusterIds;
if (clusterIdsToAdd == null || clusterIdsToAdd.length == 0) {
throw new ClusterIdsAreEmptyException();
} else clusterIds = clusterIdsToAdd;
database.checkSecurity(ORule.ResourceGeneric.SCHEMA, ORole.PERMISSION_CREATE);
final String key = className.toLowerCase();
if (classes.containsKey(key))
throw new OSchemaException("Class " + className + " already exists in current database");
OClassImpl cls = new OClassImpl(this, className, clusterIds);
classes.put(key, cls);
if (superClasses != null && superClasses.size() > 0) {
cls.setSuperClassesInternal(superClasses);
for (OClass superClass : superClasses) {
// UPDATE INDEXES
final int[] clustersToIndex = superClass.getPolymorphicClusterIds();
final String[] clusterNames = new String[clustersToIndex.length];
for (int i = 0; i < clustersToIndex.length; i++)
clusterNames[i] = database.getClusterNameById(clustersToIndex[i]);
for (OIndex<?> index : superClass.getIndexes())
for (String clusterName : clusterNames)
if (clusterName != null)
database
.getMetadata()
.getIndexManager()
.addClusterToIndex(clusterName, index.getName());
}
}
addClusterClassMap(cls);
return cls;
} finally {
releaseSchemaWriteLock();
}
}
public OProperty(OClass iOwner) {
document = new ODocument(iOwner.getDocument().getDatabase());
owner = iOwner;
id = iOwner.properties.size();
}
@Override
public OClass createClass(String uri) {
OClass cd = new ClassImpl(uri);
if (!cd.isBottom() && !cd.isTop()) concepts.put(uri, cd);
return cd;
}