public static IStoredField GetDeclaredStoredFieldInHeirarchy(IStoredClass aClass, string attribute)
{
try
{
IStoredField sField = null;
if (aClass == null)
{
return(null);
}
while (aClass != null)
{
sField = aClass.StoredField(attribute, null);
if (sField != null)
{
break;
}
aClass = aClass.GetParentStoredClass();
}
return(sField);
}
catch (Exception e)
{
LoggingHelper.HandleException(e);
}
return(null);
}
private static void ChangeType()
{
StoreInDB(new Person(), new Person("John"));
// #example: copying the data from the old field type to the new one
using (IObjectContainer container = Db4oEmbedded.OpenFile("database.db4o"))
{
// first get all objects which should be updated
IList <Person> persons = container.Query <Person>();
foreach (Person person in persons)
{
// get the database-metadata about this object-type
IStoredClass dbClass = container.Ext().StoredClass(person);
// get the old field which was an int-type
IStoredField oldField = dbClass.StoredField("id", typeof(int));
if (null != oldField)
{
// Access the old data and copy it to the new field!
object oldValue = oldField.Get(person);
if (null != oldValue)
{
person.id = new Identity((int)oldValue);
container.Store(person);
}
}
}
}
// #end example
}
private void AssertIndexed(Type clazz, bool expected)
{
IStoredClass storedClass = FileSession().StoredClass(clazz);
IStoredField storedField = storedClass.StoredField("_id", typeof(int));
Assert.AreEqual(expected, storedField.HasIndex());
}
private void AssertStoredType(IStoredClass clazz, string fieldName, Type type)
{
IStoredField field = clazz.StoredField(fieldName, null);
Assert.AreEqual(type.FullName, CrossPlatformServices.SimpleName(field.GetStoredType
().GetName()));
}
public virtual void Test()
{
for (int i = 0; i < ObjectCount; i++)
{
Store(new CommitAfterDroppedFieldIndexTestCase.Item(1));
}
IStoredField storedField = FileSession().StoredClass(typeof(CommitAfterDroppedFieldIndexTestCase.Item
)).StoredField("_id", null);
storedField.CreateIndex();
FileSession().Commit();
IExtObjectContainer session = OpenNewSession();
IObjectSet allItems = session.Query(typeof(CommitAfterDroppedFieldIndexTestCase.Item
));
for (IEnumerator itemIter = allItems.GetEnumerator(); itemIter.MoveNext();)
{
CommitAfterDroppedFieldIndexTestCase.Item item = ((CommitAfterDroppedFieldIndexTestCase.Item
)itemIter.Current);
item._id++;
session.Store(item);
}
// Making sure all storing has been processed.
session.SetSemaphore("anySemaphore", 0);
storedField.DropIndex();
session.Commit();
storedField.CreateIndex();
}
public virtual void TestTraverseValues()
{
IStoredField field = StoredField();
ExpectingVisitor expectingVisitor = new ExpectingVisitor(IntArrays4.ToObjectArray
(Foos));
field.TraverseValues(expectingVisitor);
expectingVisitor.AssertExpectations();
}
private static void TraverseIndex(IObjectContainer container)
{
// #example: Traverse index
IStoredField storedField = container.Ext()
.StoredClass(typeof(Item)).StoredField("data", typeof(int));
storedField.TraverseValues(new IndexVisitor());
// #end example
}
public virtual void TestDropIndex()
{
IStoredField field = StoredField();
field.CreateIndex();
AssertQuery();
field.DropIndex();
Assert.IsFalse(field.HasIndex());
AssertQuery();
}
public virtual void TestCreateIndexAtRuntime()
{
IStoredField field = StoredField();
Assert.IsFalse(field.HasIndex());
field.CreateIndex();
Assert.IsTrue(field.HasIndex());
AssertQuery();
field.CreateIndex();
}
public virtual IStoredField[] GetStoredFields()
{
IStoredField[] fieldMetadata = _classMetadata.GetStoredFields();
IStoredField[] storedFields = new IStoredField[fieldMetadata.Length];
for (int i = 0; i < fieldMetadata.Length; i++)
{
storedFields[i] = new StoredFieldImpl(_transaction, (FieldMetadata)fieldMetadata[
i]);
}
return(storedFields);
}
public virtual IStoredField[] GetStoredFields()
{
IStoredField[] fieldMetadata = _classMetadata.GetStoredFields();
IStoredField[] storedFields = new IStoredField[fieldMetadata.Length];
for (int i = 0; i < fieldMetadata.Length; i++)
{
storedFields[i] = new StoredFieldImpl(_transaction, (FieldMetadata)fieldMetadata[
i]);
}
return storedFields;
}
public Db4oField(IStoredField storedField)
{
this.storedField = storedField;
internalName = storedField.GetName();
name = AutomaticPropertyUtils.TryParseName(internalName);
IsIndexed = storedField.HasIndex();
IReflectClass type = storedField.GetStoredType();
if(type!=null)
DataType = type.ToString();
}
public void RunWith(IObjectContainer db)
{
IStoredClass storedClass = db.Ext().StoredClass(targetClazz);
IStoredField storedField = storedClass.StoredField(fieldName, fieldType);
IObjectSet result = db.Query(targetClazz);
Assert.AreEqual(1, result.Count);
object obj = result.Next();
object value = (object)storedField.Get(obj);
Assert.AreEqual(fieldValue, value);
}
public virtual void TestTraverseValues()
{
IStoredField field = StoredField();
StringFieldIndexTestCase.ExpectedVisitor visitor = new StringFieldIndexTestCase.ExpectedVisitor
(2);
field.TraverseValues(visitor);
for (int i = 0; i < _fooValues.Length; i++)
{
Assert.AreEqual(_fooValues[i], visitor.GetValues()[i]);
}
}
public static void Main(string[] args)
{
using (IObjectContainer container = Db4oEmbedded.OpenFile("database.db4o"))
{
container.Store(new Person("Johnson", "Roman", 42));
container.Store(new Person("Miller", "John", 21));
// #example: All stored classes
// Get the information about all stored classes.
IStoredClass[] classesInDB = container.Ext().StoredClasses();
foreach (IStoredClass storedClass in classesInDB)
{
Console.WriteLine(storedClass.GetName());
}
// Information for a certain class
IStoredClass metaInfo = container.Ext().StoredClass(typeof(Person));
// #end example
// #example: Accessing stored fields
IStoredClass metaInfoForPerson = container.Ext().StoredClass(typeof(Person));
// Access all existing fields
foreach (IStoredField field in metaInfoForPerson.GetStoredFields())
{
Console.WriteLine("Field: " + field.GetName());
}
// Accessing the field 'name' of any type.
IStoredField nameField = metaInfoForPerson.StoredField("name", null);
// Accessing the string field 'name'. Important if this field had another time in previous
// versions of the class model
IStoredField ageField = metaInfoForPerson.StoredField("age", typeof(int));
// Check if the field is indexed
bool isAgeFieldIndexed = ageField.HasIndex();
// Get the type of the field
string fieldType = ageField.GetStoredType().GetName();
// #end example
// #example: Access via meta data
IStoredClass metaForPerson = container.Ext().StoredClass(typeof(Person));
IStoredField metaNameField = metaForPerson.StoredField("name", null);
IList <Person> persons = container.Query <Person>();
foreach (Person person in persons)
{
string name = (string)metaNameField.Get(person);
Console.WriteLine("Name is " + name);
}
// #end example
}
}
private static void ReindexDateTimeField(IStoredField field)
{
IReflectClass claxx = field.GetStoredType();
if (claxx == null)
{
return;
}
Type t = NetReflector.ToNative(claxx);
if (t == typeof(DateTime) || t == typeof(DateTime?))
{
field.DropIndex();
field.CreateIndex();
}
}
public virtual void TestGetStoredFields()
{
AssertStoredField(typeof(StoredClassTestCase.Item), FieldName, ItemName, typeof(string
), true, false);
AssertStoredField(typeof(StoredClassTestCase.ItemParent), "_array", null, typeof(
string), false, true);
IStoredClass itemStoredClass = ItemStoredClass();
IStoredField storedField = itemStoredClass.StoredField(FieldName, null);
IStoredField sameStoredField = itemStoredClass.GetStoredFields()[0];
IStoredField otherStoredField = StoredClass(typeof(StoredClassTestCase.ItemParent
)).GetStoredFields()[0];
Assert.EqualsAndHashcode(storedField, sameStoredField, otherStoredField);
Assert.IsNull(itemStoredClass.StoredField(string.Empty, null));
}
private static void ReindexDateTimeField(IStoredField field)
{
var claxx = field.GetStoredType();
if (claxx == null)
{
return;
}
var t = NetReflector.ToNative(claxx);
if (t == typeof(T) || t == typeof(T?))
{
field.DropIndex();
field.CreateIndex();
}
}
public virtual void TestStoredFieldIsolation()
{
EmbeddedClientObjectContainerTestCase.Item storedItem = StoreItemToClient1AndCommit
();
storedItem._name = ChangedName;
_client1.Store(storedItem);
EmbeddedClientObjectContainerTestCase.Item retrievedItem = RetrieveItemFromClient2
();
IStoredClass storedClass = _client2.StoredClass(typeof(EmbeddedClientObjectContainerTestCase.Item
));
IStoredField storedField = storedClass.StoredField(FieldName, null);
object retrievedName = storedField.Get(retrievedItem);
Assert.AreEqual(OriginalName, retrievedName);
_client1.Commit();
retrievedName = storedField.Get(retrievedItem);
Assert.AreEqual(ChangedName, retrievedName);
}
private void AssertItemStoredField(object expectedValue)
{
IObjectContainer db = OpenContainer();
try
{
IObjectSet objectSet = db.Query(typeof(FieldsToTypeHandlerMigrationTestCase.Item)
);
Assert.AreEqual(1, objectSet.Count);
FieldsToTypeHandlerMigrationTestCase.Item item = (FieldsToTypeHandlerMigrationTestCase.Item
)objectSet.Next();
IStoredField storedField = db.Ext().StoredClass(typeof(FieldsToTypeHandlerMigrationTestCase.Item
)).StoredField("_id", null);
object actualValue = storedField.Get(item);
Assert.AreEqual(expectedValue, actualValue);
}
finally
{
db.Close();
}
}
private void AssertHasIndexInfo(IObjectContainer db)
{
IStoredClass[] scArray = db.Ext().StoredClasses();
for (int scIndex = 0; scIndex < scArray.Length; ++scIndex)
{
IStoredClass sc = scArray[scIndex];
if (!sc.GetName().Equals(typeof(KnownClassesIndexTestCase.WithIndex).FullName))
{
continue;
}
IStoredField[] sfArray = sc.GetStoredFields();
for (int sfIndex = 0; sfIndex < sfArray.Length; ++sfIndex)
{
IStoredField sf = sfArray[sfIndex];
if (sf.HasIndex())
{
return;
}
}
Assert.Fail("no index found");
}
}
private void AssertStoredField(Type objectClass, string fieldName, object expectedFieldValue
, Type expectedFieldType, bool hasIndex, bool isArray)
{
IStoredClass storedClass = StoredClass(objectClass);
IStoredField[] storedFields = storedClass.GetStoredFields();
Assert.AreEqual(1, storedFields.Length);
IStoredField storedField = storedFields[0];
Assert.AreEqual(fieldName, storedField.GetName());
IStoredField storedFieldByName = storedClass.StoredField(fieldName, expectedFieldType
);
Assert.AreEqual(storedField, storedFieldByName);
object item = RetrieveOnlyInstance(objectClass);
Assert.AreEqual(expectedFieldValue, storedField.Get(item));
IReflectClass fieldType = storedField.GetStoredType();
Assert.AreEqual(Reflector().ForClass(expectedFieldType), fieldType);
Assert.AreEqual(isArray, storedField.IsArray());
if (IsMultiSession())
{
return;
}
Assert.AreEqual(hasIndex, storedField.HasIndex());
// FIXME: test rename
if (!hasIndex)
{
Assert.Expect(typeof(Exception), new _ICodeBlock_113(storedField));
}
else
{
IntByRef count = new IntByRef();
storedField.TraverseValues(new _IVisitor4_123(count, expectedFieldValue));
Assert.AreEqual(1, count.value);
}
}
public bool IsIndexed()
{
try
{
IStoredClass storedClass = objectContainer.Ext().StoredClass(m_classname);
if (null == storedClass)
{
return(false);
}
IStoredField field = DataLayerCommon.GetDeclaredStoredFieldInHeirarchy(storedClass, m_fieldname);
if (field == null)
{
return(false);
}
return(field.HasIndex());
}
catch (Exception oEx)
{
LoggingHelper.HandleException(oEx);
return(false);
}
}
private static IndexingState HasIndex(IStoredField sf)
{
return sf.HasIndex() ? IndexingState.Indexed : IndexingState.NotIndexed;
}
private static IndexingState HasIndex(IStoredField sf)
{
return(sf.HasIndex() ? IndexingState.Indexed : IndexingState.NotIndexed);
}
public _ICodeBlock_113(IStoredField storedField)
{
this.storedField = storedField;
}
public virtual IStoredField[] GetStoredFields()
{
lock (Lock())
{
if (_aspects == null)
{
return new IStoredField[0];
}
var storedFields = new Collection4();
TraverseDeclaredFields(new _IProcedure4_1039(storedFields));
var fields = new IStoredField[storedFields.Size()];
storedFields.ToArray(fields);
return fields;
}
}
public _ICodeBlock_113(IStoredField storedField)
{
this.storedField = storedField;
}
