public virtual object Clone()
{
PersistentStub obj = (PersistentStub)base.MemberwiseClone();
obj.oid = 0;
return(obj);
}
public void Unpin()
{
for (int i = 0, n = used; i < n; i++)
{
IPersistent elem = arr[i];
if (elem != null && !elem.IsRaw() && elem.IsPersistent())
{
arr[i] = new PersistentStub(elem.Storage, elem.Oid);
}
}
}
public void Unpin()
{
for (int i = 0, n = used; i < n; i++)
{
object elem = arr[i];
if (elem != null && db.IsLoaded(elem))
{
arr[i] = new PersistentStub(db, db.GetOid(elem));
}
}
}
internal void createIndex(String indexType)
{
XMLScanner.Token tkn;
int oid = 0;
bool unique = false;
String className = null;
String fieldName = null;
String[] fieldNames = null;
long autoinc = 0;
String type = null;
ClassDescriptor.FieldType[] types = null;
while ((tkn = scanner.scan()) == XMLScanner.Token.IDENT)
{
string attrName = scanner.Identifier;
if (scanner.scan() != XMLScanner.Token.EQ || scanner.scan() != XMLScanner.Token.SCONST)
{
throwException("Attribute value expected");
}
string attrValue = scanner.String;
if (attrName.Equals("id"))
{
oid = mapId(parseInt(attrValue));
}
else if (attrName.Equals("unique"))
{
unique = parseInt(attrValue) != 0;
}
else if (attrName.Equals("class"))
{
className = attrValue;
}
else if (attrName.Equals("type"))
{
type = attrValue;
}
else if (attrName.Equals("autoinc"))
{
autoinc = parseInt(attrValue);
}
else if (attrName.Equals("field"))
{
fieldName = attrValue;
}
else if (attrName.StartsWith("field"))
{
int fieldNo = Int32.Parse(attrName.Substring(5));
if (fieldNames == null || fieldNames.Length <= fieldNo)
{
String[] newFieldNames = new String[fieldNo+1];
if (fieldNames != null)
{
Array.Copy(fieldNames, 0, newFieldNames, 0, fieldNames.Length);
}
fieldNames = newFieldNames;
}
fieldNames[fieldNo] = attrValue;
}
else if (attrName.StartsWith("type"))
{
int typeNo = Int32.Parse(attrName.Substring(4));
if (types == null || types.Length <= typeNo)
{
ClassDescriptor.FieldType[] newTypes = new ClassDescriptor.FieldType[typeNo+1];
if (types != null)
{
Array.Copy(types, 0, newTypes, 0, types.Length);
}
types = newTypes;
}
types[typeNo] = mapType(attrValue);
}
}
if (tkn != XMLScanner.Token.GT)
{
throwException("Unclosed element tag");
}
if (oid == 0)
{
throwException("ID is not specified or index");
}
#if USE_GENERICS
ClassDescriptor desc = storage.getClassDescriptor(findClassByName(indexType));
Btree btree = (Btree)desc.newInstance();
#else
Btree btree = null;
#endif
if (className != null)
{
Type cls = findClassByName(className);
if (fieldName != null)
{
#if USE_GENERICS
btree.init(cls, null, new string[]{fieldName}, unique, autoinc);
#else
btree = indexType.StartsWith("Perst.Impl.BtreeCaseInsensitiveFieldIndex")
? (Btree)new BtreeCaseInsensitiveFieldIndex(cls, fieldName, unique, autoinc)
: (Btree)new BtreeFieldIndex(cls, fieldName, unique, autoinc);
#endif
}
else if (fieldNames != null)
{
#if USE_GENERICS
btree.init(cls, null, fieldNames, unique, autoinc);
#else
btree = indexType.StartsWith("Perst.Impl.BtreeCaseInsensitiveMultiFieldIndex")
? (Btree)new BtreeCaseInsensitiveMultiFieldIndex(cls, fieldNames, unique)
: (Btree)new BtreeMultiFieldIndex(cls, fieldNames, unique);
#endif
}
else
{
throwException("Field name is not specified for field index");
}
}
else
{
if (types != null)
{
#if USE_GENERICS
btree.init(null, types, null, unique, autoinc);
#else
btree = new BtreeCompoundIndex(types, unique);
#endif
}
else if (type == null)
{
if (indexType.StartsWith("Perst.Impl.PersistentSet"))
{
#if !USE_GENERICS
btree = new PersistentSet(unique);
#endif
}
else
{
throwException("Key type is not specified for index");
}
}
else
{
if (indexType.StartsWith("org.garret.perst.impl.BitIndexImpl"))
{
#if !USE_GENERICS
btree = new BitIndexImpl();
#endif
}
else
{
#if USE_GENERICS
btree.init(null, new ClassDescriptor.FieldType[]{mapType(type)}, null, unique, autoinc);
#else
btree = new Btree(mapType(type), unique);
#endif
}
}
}
storage.AssignOid(btree, oid, false);
while ((tkn = scanner.scan()) == XMLScanner.Token.LT)
{
if (scanner.scan() != XMLScanner.Token.IDENT || !scanner.Identifier.Equals("ref"))
{
throwException("<ref> element expected");
}
XMLElement refElem = readElement("ref");
Key key;
if (fieldNames != null)
{
String[] values = new String[fieldNames.Length];
#if USE_GENERICS
types = btree.FieldTypes;
#else
types = ((BtreeMultiFieldIndex)btree).types;
#endif
for (int i = 0; i < values.Length; i++)
{
values[i] = getAttribute(refElem, "key"+i);
}
key = createCompoundKey(types, values);
}
else if (types != null)
{
String[] values = new String[fieldNames.Length];
for (int i = 0; i < values.Length; i++)
{
values[i] = getAttribute(refElem, "key"+i);
}
key = createCompoundKey(types, values);
}
else
{
key = createKey(btree.FieldType, getAttribute(refElem, "key"));
}
object obj = new PersistentStub(storage, mapId(getIntAttribute(refElem, "id")));
btree.insert(key, obj, false);
}
if (tkn != XMLScanner.Token.LTS
|| scanner.scan() != XMLScanner.Token.IDENT
|| !scanner.Identifier.Equals(indexType)
|| scanner.scan() != XMLScanner.Token.GT)
{
throwException("Element is not closed");
}
#if USE_GENERICS
ByteBuffer buf = new ByteBuffer();
buf.extend(ObjectHeader.Sizeof);
int size = storage.packObject(btree, desc, ObjectHeader.Sizeof, buf);
byte[] data = buf.arr;
ObjectHeader.setSize(data, 0, size);
ObjectHeader.setType(data, 0, desc.Oid);
#else
byte[] data = storage.packObject(btree, false);
int size = ObjectHeader.getSize(data, 0);
#endif
long pos = storage.allocate(size, 0);
storage.setPos(oid, pos | StorageImpl.dbModifiedFlag);
storage.pool.put(pos & ~ StorageImpl.dbFlagsMask, data, size);
}