示例#1
0
        private Entity CreateNewEntityFromTable(ITable table)
        {
            List <ITable> tablesToProcess = new List <ITable>();

            tablesToProcess.Add(table);
            EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor(table.Database.MappingSet.EntitySet.Entities.Select(ent => ent.Name)));
            List <Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, table.Database.MappingSet);

            if (newEntities.Count != 1)
            {
                throw new Exception("Only one entity should be created.");
            }

            return(newEntities[0]);
        }
        internal bool Save()
        {
            if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Column" && comboBoxDiscriminator.SelectedIndex < 0)
            {
                MessageBox.Show(this, "Select a discriminator column.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            else if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Formula" && string.IsNullOrWhiteSpace(textBoxFormula.Text))
            {
                MessageBox.Show(this, "Enter a formula.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            #region Check for entities with no columns selected
            List <string> entitiesWithNoColumns = new List <string>();

            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                bool hasSelectedColumns = false;

                for (int rowIndex = 3; rowIndex < advTree1.Nodes.Count; rowIndex++)
                {
                    if (advTree1.Nodes[rowIndex].Cells[i].Checked)
                    {
                        hasSelectedColumns = true;
                        break;
                    }
                }
                if (!hasSelectedColumns)
                {
                    entitiesWithNoColumns.Add(((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text);
                }
            }
            if (entitiesWithNoColumns.Count > 0)
            {
                string message = "Entites with no columns. Delete them or select some columns: " + Environment.NewLine + Environment.NewLine;

                foreach (var entityname in entitiesWithNoColumns)
                {
                    message += entityname + ", ";
                }

                message = message.TrimEnd(' ', ',');

                MessageBox.Show(this, message, "Entities with no columns", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            #endregion

            #region Check that exactly one Base exists
            bool baseFound = false;
            int  baseIndex = -1;

            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                if (((DevComponents.DotNetBar.CheckBoxItem)advTree1.Nodes[1].Cells[i].HostedItem).Checked)
                {
                    baseFound = true;
                    baseIndex = i;
                    break;
                }
            }
            if (!baseFound)
            {
                MessageBox.Show(this, "Specify a base entity.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            #endregion

            EditModel.BusyPopulating = true;
            Entity        baseEntity    = null;
            List <Entity> childEntities = new List <Entity>();

            // Save all the entities
            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                Entity entity = (Entity)advTree1.Columns[i].Tag;

                if (entity.EntitySet == null)                 // This is a new entity
                {
                    // Create a new entity
                    List <ITable> tablesToProcess = new List <ITable>();
                    tablesToProcess.Add(Table);
                    EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor());
                    List <Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet);

                    if (newEntities.Count != 1)
                    {
                        throw new Exception("Only one entity should be created.");
                    }

                    Entity newEntity = newEntities[0];
                    newEntity.Name = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text;
                    newEntity.DiscriminatorValue = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[2].Cells[i].HostedControl).Text;

                    UpdateProperties(i, newEntity);
                    // Delete the original entity
                    entity.DeleteSelf();
                    entity = newEntity;
                }
                else                 // This is an existing entity
                {
                    entity.Name = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text;
                    UpdateProperties(i, entity);
                }
                if (i == baseIndex)
                {
                    baseEntity = entity;
                }
                else
                {
                    childEntities.Add(entity);
                }
            }
            foreach (Entity child in childEntities)
            {
                child.Parent = baseEntity;
                baseEntity.AddChild(child);
            }
            if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Column")
            {
                baseEntity.Discriminator.DiscriminatorType = Enums.DiscriminatorTypes.Column;
                baseEntity.Discriminator.ColumnName        = comboBoxDiscriminator.SelectedItem.ToString();
            }
            else
            {
                baseEntity.Discriminator.DiscriminatorType = Enums.DiscriminatorTypes.Formula;
                baseEntity.Discriminator.Formula           = textBoxFormula.Text;
            }
            EditModel.BusyPopulating = false;
            return(true);
        }
        private bool CreateNewEntity()
        {
            if (textBoxName.Text == "NewName")
            {
                MessageBox.Show(this, "You need specify a name for the new entity.", "Invalid name", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            if (Table.Database.MappingSet.EntitySet.Entities.Any(e => e.Name.ToLowerInvariant() == textBoxName.Text.ToLowerInvariant()))
            {
                MessageBox.Show(this, "An entity with this name already exists.", "Invalid name", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            if (RequestorType == RequestorTypes.Table)
            {
                if (listViewEx1.CheckedItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select at least one property.", "No properties selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                // Check if this table is currently used as an association table
                var reference = Table.Database.MappingSet.EntitySet.References.FirstOrDefault(r => r.MappedTable() == Table);
                bool keepAssociationEntities = false;

                if (reference != null)
                {
                    if (MessageBox.Show(this, string.Format("This table is currently being used as an association table to implement a many-to-many relationship between {0} and {1} and therefore should normally have no mapped entity.\n\nAre you sure you want to create a new entity for it?", reference.Entity1.Name, reference.Entity2.Name), "Association table", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation) == System.Windows.Forms.DialogResult.No)
                        return false;
                    else
                        keepAssociationEntities = true;
                }

                List<ITable> tablesToProcess = new List<ITable>();
                tablesToProcess.Add(Table);
                EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor(Table.Database.MappingSet.EntitySet.Entities.Select(ent => ent.Name)));
                List<Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet, keepAssociationEntities);
                SelectedEntity = newEntities[0];

                #region Remove un-selected columns
                List<string> selectedColumnNames = new List<string>();

                foreach (ListViewItem col in listViewEx1.CheckedItems)
                    selectedColumnNames.Add(col.Text);

                for (int i = SelectedEntity.Properties.Count() - 1; i >= 0; i--)
                {
                    Property property = SelectedEntity.Properties.ElementAt(i);
                    var mappedColumn = property.MappedColumn();

                    if (mappedColumn != null && !selectedColumnNames.Contains(mappedColumn.Name))
                        SelectedEntity.RemoveProperty(property);
                }
                #endregion

                SelectedEntity.Name = textBoxName.Text;
                return true;
            }
            else
            //else if (RequestorType == RequestorTypes.Entity_Select_Parent ||
            //    RequestorType == RequestorTypes.Entity_Create_Abstract_Parent)
            {
                Entity newEntity = new EntityImpl(textBoxName.Text) { Schema = Entity.Schema };
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return true;
            }
            //else if (RequestorType == RequestorTypes.Entity_Select_Child)
            //{
            //    if (SelectedItems.Count == 0)
            //    {
            //        MessageBox.Show(this, "You need to select some child entities.", "No entities selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            //        return false;
            //    }
            //    Entity newEntity = new EntityImpl("NewChildEntity") { Schema = Entity.Schema };

            //    foreach (ListViewItem item in SelectedItems)
            //    {
            //        Property existingProperty = (Property)item.Tag;
            //        newEntity.AddProperty(new PropertyImpl(existingProperty.Name)
            //        {
            //            Type = existingProperty.Type
            //        });
            //    }
            //    //newEntity.AddChild(Entity);
            //    //Entity.Parent = newEntity;
            //    Entity.EntitySet.AddEntity(newEntity);
            //    SelectedEntity = newEntity;
            //    return true;
            //}
            //else
            //    throw new NotImplementedException("RequestorType not handled yet: " + RequestorType.ToString());
        }
        private bool CreateNewEntity()
        {
            if (textBoxName.Text == "NewName")
            {
                MessageBox.Show(this, "You need specify a name for the new entity.", "Invalid name", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            if (Table.Database.MappingSet.EntitySet.Entities.Any(e => e.Name.ToLowerInvariant() == textBoxName.Text.ToLowerInvariant()))
            {
                MessageBox.Show(this, "An entity with this name already exists.", "Invalid name", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return(false);
            }
            if (RequestorType == RequestorTypes.Table)
            {
                if (listViewEx1.CheckedItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select at least one property.", "No properties selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return(false);
                }
                // Check if this table is currently used as an association table
                var  reference = Table.Database.MappingSet.EntitySet.References.FirstOrDefault(r => r.MappedTable() == Table);
                bool keepAssociationEntities = false;

                if (reference != null)
                {
                    if (MessageBox.Show(this, string.Format("This table is currently being used as an association table to implement a many-to-many relationship between {0} and {1} and therefore should normally have no mapped entity.\n\nAre you sure you want to create a new entity for it?", reference.Entity1.Name, reference.Entity2.Name), "Association table", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation) == System.Windows.Forms.DialogResult.No)
                    {
                        return(false);
                    }
                    else
                    {
                        keepAssociationEntities = true;
                    }
                }

                List <ITable> tablesToProcess = new List <ITable>();
                tablesToProcess.Add(Table);
                EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor(Table.Database.MappingSet.EntitySet.Entities.Select(ent => ent.Name)));
                List <Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet, keepAssociationEntities);
                SelectedEntity = newEntities[0];

                #region Remove un-selected columns
                List <string> selectedColumnNames = new List <string>();

                foreach (ListViewItem col in listViewEx1.CheckedItems)
                {
                    selectedColumnNames.Add(col.Text);
                }

                for (int i = SelectedEntity.Properties.Count() - 1; i >= 0; i--)
                {
                    Property property     = SelectedEntity.Properties.ElementAt(i);
                    var      mappedColumn = property.MappedColumn();

                    if (mappedColumn != null && !selectedColumnNames.Contains(mappedColumn.Name))
                    {
                        SelectedEntity.RemoveProperty(property);
                    }
                }
                #endregion

                SelectedEntity.Name = textBoxName.Text;
                return(true);
            }
            else
            //else if (RequestorType == RequestorTypes.Entity_Select_Parent ||
            //    RequestorType == RequestorTypes.Entity_Create_Abstract_Parent)
            {
                Entity newEntity = new EntityImpl(textBoxName.Text)
                {
                    Schema = Entity.Schema
                };
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return(true);
            }
            //else if (RequestorType == RequestorTypes.Entity_Select_Child)
            //{
            //    if (SelectedItems.Count == 0)
            //    {
            //        MessageBox.Show(this, "You need to select some child entities.", "No entities selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
            //        return false;
            //    }
            //    Entity newEntity = new EntityImpl("NewChildEntity") { Schema = Entity.Schema };

            //    foreach (ListViewItem item in SelectedItems)
            //    {
            //        Property existingProperty = (Property)item.Tag;
            //        newEntity.AddProperty(new PropertyImpl(existingProperty.Name)
            //        {
            //            Type = existingProperty.Type
            //        });
            //    }
            //    //newEntity.AddChild(Entity);
            //    //Entity.Parent = newEntity;
            //    Entity.EntitySet.AddEntity(newEntity);
            //    SelectedEntity = newEntity;
            //    return true;
            //}
            //else
            //    throw new NotImplementedException("RequestorType not handled yet: " + RequestorType.ToString());
        }
        private bool CreateNewEntity()
        {
            if (RequestorType == RequestorTypes.Table)
            {
                List <ITable> tablesToProcess = new List <ITable>();
                tablesToProcess.Add(Table);
                EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor(Table.Database.MappingSet.EntitySet.Entities.Select(ent => ent.Name)));
                List <Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet);
                SelectedEntity = newEntities[0];

                #region Remove un-selected columns
                List <string> selectedColumnNames = new List <string>();

                foreach (ListViewItem col in listViewEntities.CheckedItems)
                {
                    selectedColumnNames.Add(col.Text);
                }

                for (int i = SelectedEntity.Properties.Count() - 1; i >= 0; i--)
                {
                    Property property = SelectedEntity.Properties.ElementAt(i);

                    if (!selectedColumnNames.Contains(property.MappedColumn().Name))
                    {
                        SelectedEntity.RemoveProperty(property);
                    }
                }
                #endregion

                SelectedEntity.Name = textBoxName.Text;
                return(true);
            }
            else if (RequestorType == RequestorTypes.Entity_Select_Parent ||
                     RequestorType == RequestorTypes.Entity_Create_Abstract_Parent)
            {
                if (SelectedPropertyItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select some properties to be moved into the abstract parent (Table Per Concrete Class)", "No properties selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return(false);
                }
                if (RequestorType == RequestorTypes.Entity_Create_Abstract_Parent &&
                    string.IsNullOrWhiteSpace(textBoxName.Text) ||
                    textBoxName.Text == DefaultNewAbstractParentName)
                {
                    MessageBox.Show(this, "Please enter a name for the new abstract parent entity.", "Name missing", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return(false);
                }
                Entity newEntity = new EntityImpl(textBoxName.Text)
                {
                    Schema = Entity.Schema
                };
                newEntity.IsAbstract = true;

                // Check that all key-properties are selected
                List <Property> selectedProperties = new List <Property>();

                foreach (ListViewItem item in SelectedPropertyItems)
                {
                    selectedProperties.Add((Property)item.Tag);
                }

                List <Property> unselectedKepProperties = new List <Property>();

                foreach (Property prop in Entity.Properties)
                {
                    if (prop.IsKeyProperty && !selectedProperties.Contains(prop))
                    {
                        unselectedKepProperties.Add(prop);
                    }
                }

                if (unselectedKepProperties.Count > 0)
                {
                    string keyPropNames = "";

                    foreach (Property p in unselectedKepProperties)
                    {
                        keyPropNames += p.Name + ", ";
                    }

                    MessageBox.Show(this, "All key properties need to be selected: " + keyPropNames.TrimEnd(',', ' '), "Invalid selection", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return(false);
                }
                foreach (ListViewItem item in SelectedPropertyItems)
                {
                    Property     existingProperty = (Property)item.Tag;
                    PropertyImpl newProp          = new PropertyImpl(existingProperty.Name)
                    {
                        Type           = existingProperty.Type,
                        NHibernateType = existingProperty.NHibernateType,
                        IsKeyProperty  = existingProperty.IsKeyProperty
                    };

                    //newProp.SetMappedColumn(existingProperty.MappedColumn());
                    newEntity.AddProperty(newProp);
                    //newEntity.AddProperty(existingProperty);

                    // Remove this property from the existing Entity, as it's now been added to the parent
                    //if (existingProperty.IsKeyProperty)
                    existingProperty.IsHiddenByAbstractParent = true;
                    //else
                    //	Entity.RemoveProperty(existingProperty);
                }
                //newEntity.AddChild(Entity);
                //Entity.Parent = newEntity;
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return(true);
            }
            else if (RequestorType == RequestorTypes.Entity_Select_Child)
            {
                if (SelectedPropertyItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select some child entities.", "No entities selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return(false);
                }
                Entity newEntity = new EntityImpl("NewChildEntity")
                {
                    Schema = Entity.Schema
                };

                foreach (ListViewItem item in SelectedPropertyItems)
                {
                    Property existingProperty = (Property)item.Tag;
                    newEntity.AddProperty(new PropertyImpl(existingProperty.Name)
                    {
                        Type           = existingProperty.Type,
                        NHibernateType = existingProperty.NHibernateType
                    });
                }
                //newEntity.AddChild(Entity);
                //Entity.Parent = newEntity;
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return(true);
            }
            else
            {
                throw new NotImplementedException("RequestorType not handled yet: " + RequestorType.ToString());
            }
        }
        internal bool Save()
        {
            if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Column" && comboBoxDiscriminator.SelectedIndex < 0)
            {
                MessageBox.Show(this, "Select a discriminator column.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            else if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Formula" && string.IsNullOrWhiteSpace(textBoxFormula.Text))
            {
                MessageBox.Show(this, "Enter a formula.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            #region Check for entities with no columns selected
            List<string> entitiesWithNoColumns = new List<string>();

            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                bool hasSelectedColumns = false;

                for (int rowIndex = 3; rowIndex < advTree1.Nodes.Count; rowIndex++)
                {
                    if (advTree1.Nodes[rowIndex].Cells[i].Checked)
                    {
                        hasSelectedColumns = true;
                        break;
                    }
                }
                if (!hasSelectedColumns)
                    entitiesWithNoColumns.Add(((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text);
            }
            if (entitiesWithNoColumns.Count > 0)
            {
                string message = "Entites with no columns. Delete them or select some columns: " + Environment.NewLine + Environment.NewLine;

                foreach (var entityname in entitiesWithNoColumns)
                    message += entityname + ", ";

                message = message.TrimEnd(' ', ',');

                MessageBox.Show(this, message, "Entities with no columns", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            #endregion

            #region Check that exactly one Base exists
            bool baseFound = false;
            int baseIndex = -1;

            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                if (((DevComponents.DotNetBar.CheckBoxItem)advTree1.Nodes[1].Cells[i].HostedItem).Checked)
                {
                    baseFound = true;
                    baseIndex = i;
                    break;
                }
            }
            if (!baseFound)
            {
                MessageBox.Show(this, "Specify a base entity.", "Missing data", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return false;
            }
            #endregion

            EditModel.BusyPopulating = true;
            Entity baseEntity = null;
            List<Entity> childEntities = new List<Entity>();

            // Save all the entities
            for (int i = 1; i < advTree1.Columns.Count; i++)
            {
                Entity entity = (Entity)advTree1.Columns[i].Tag;

                if (entity.EntitySet == null) // This is a new entity
                {
                    // Create a new entity
                    List<ITable> tablesToProcess = new List<ITable>();
                    tablesToProcess.Add(Table);
                    EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor());
                    List<Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet);

                    if (newEntities.Count != 1)
                        throw new Exception("Only one entity should be created.");

                    Entity newEntity = newEntities[0];
                    newEntity.Name = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text;
                    newEntity.DiscriminatorValue = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[2].Cells[i].HostedControl).Text;

                    UpdateProperties(i, newEntity);
                    // Delete the original entity
                    entity.DeleteSelf();
                    entity = newEntity;
                }
                else // This is an existing entity
                {
                    entity.Name = ((DevComponents.DotNetBar.Controls.TextBoxX)advTree1.Nodes[0].Cells[i].HostedControl).Text;
                    UpdateProperties(i, entity);
                }
                if (i == baseIndex)
                    baseEntity = entity;
                else
                    childEntities.Add(entity);
            }
            foreach (Entity child in childEntities)
            {
                child.Parent = baseEntity;
                baseEntity.AddChild(child);
            }
            if (comboBoxDiscriminatorType.SelectedItem.ToString() == "Column")
            {
                baseEntity.Discriminator.DiscriminatorType = Enums.DiscriminatorTypes.Column;
                baseEntity.Discriminator.ColumnName = comboBoxDiscriminator.SelectedItem.ToString();
            }
            else
            {
                baseEntity.Discriminator.DiscriminatorType = Enums.DiscriminatorTypes.Formula;
                baseEntity.Discriminator.Formula = textBoxFormula.Text;
            }
            EditModel.BusyPopulating = false;
            return true;
        }
        private bool CreateNewEntity()
        {
            if (RequestorType == RequestorTypes.Table)
            {
                List<ITable> tablesToProcess = new List<ITable>();
                tablesToProcess.Add(Table);
                EntityModel.Controller.MappingLayer.MappingProcessor proc = new EntityModel.Controller.MappingLayer.MappingProcessor(new EntityModel.Controller.MappingLayer.OneToOneEntityProcessor(Table.Database.MappingSet.EntitySet.Entities.Select(ent => ent.Name)));
                List<Entity> newEntities = proc.CreateOneToOneMappingsFor(tablesToProcess, Table.Database.MappingSet);
                SelectedEntity = newEntities[0];

                #region Remove un-selected columns
                List<string> selectedColumnNames = new List<string>();

                foreach (ListViewItem col in listViewEntities.CheckedItems)
                    selectedColumnNames.Add(col.Text);

                for (int i = SelectedEntity.Properties.Count() - 1; i >= 0; i--)
                {
                    Property property = SelectedEntity.Properties.ElementAt(i);

                    if (!selectedColumnNames.Contains(property.MappedColumn().Name))
                        SelectedEntity.RemoveProperty(property);
                }
                #endregion

                SelectedEntity.Name = textBoxName.Text;
                return true;
            }
            else if (RequestorType == RequestorTypes.Entity_Select_Parent ||
                RequestorType == RequestorTypes.Entity_Create_Abstract_Parent)
            {
                if (SelectedPropertyItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select some properties to be moved into the abstract parent (Table Per Concrete Class)", "No properties selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                if (RequestorType == RequestorTypes.Entity_Create_Abstract_Parent &&
                    string.IsNullOrWhiteSpace(textBoxName.Text) ||
                    textBoxName.Text == DefaultNewAbstractParentName)
                {
                    MessageBox.Show(this, "Please enter a name for the new abstract parent entity.", "Name missing", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                Entity newEntity = new EntityImpl(textBoxName.Text) { Schema = Entity.Schema };
                newEntity.IsAbstract = true;

                // Check that all key-properties are selected
                List<Property> selectedProperties = new List<Property>();

                foreach (ListViewItem item in SelectedPropertyItems)
                    selectedProperties.Add((Property)item.Tag);

                List<Property> unselectedKepProperties = new List<Property>();

                foreach (Property prop in Entity.Properties)
                    if (prop.IsKeyProperty && !selectedProperties.Contains(prop))
                        unselectedKepProperties.Add(prop);

                if (unselectedKepProperties.Count > 0)
                {
                    string keyPropNames = "";

                    foreach (Property p in unselectedKepProperties)
                        keyPropNames += p.Name + ", ";

                    MessageBox.Show(this, "All key properties need to be selected: " + keyPropNames.TrimEnd(',', ' '), "Invalid selection", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                foreach (ListViewItem item in SelectedPropertyItems)
                {
                    Property existingProperty = (Property)item.Tag;
                    PropertyImpl newProp = new PropertyImpl(existingProperty.Name)
                        {
                            Type = existingProperty.Type,
                            NHibernateType = existingProperty.NHibernateType,
                            IsKeyProperty = existingProperty.IsKeyProperty
                        };

                    //newProp.SetMappedColumn(existingProperty.MappedColumn());
                    newEntity.AddProperty(newProp);
                    //newEntity.AddProperty(existingProperty);

                    // Remove this property from the existing Entity, as it's now been added to the parent
                    //if (existingProperty.IsKeyProperty)
                    existingProperty.IsHiddenByAbstractParent = true;
                    //else
                    //	Entity.RemoveProperty(existingProperty);
                }
                //newEntity.AddChild(Entity);
                //Entity.Parent = newEntity;
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return true;
            }
            else if (RequestorType == RequestorTypes.Entity_Select_Child)
            {
                if (SelectedPropertyItems.Count == 0)
                {
                    MessageBox.Show(this, "You need to select some child entities.", "No entities selected", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                    return false;
                }
                Entity newEntity = new EntityImpl("NewChildEntity") { Schema = Entity.Schema };

                foreach (ListViewItem item in SelectedPropertyItems)
                {
                    Property existingProperty = (Property)item.Tag;
                    newEntity.AddProperty(new PropertyImpl(existingProperty.Name)
                    {
                        Type = existingProperty.Type,
                        NHibernateType = existingProperty.NHibernateType
                    });
                }
                //newEntity.AddChild(Entity);
                //Entity.Parent = newEntity;
                Entity.EntitySet.AddEntity(newEntity);
                SelectedEntity = newEntity;
                return true;
            }
            else
                throw new NotImplementedException("RequestorType not handled yet: " + RequestorType.ToString());
        }