public IEnumerable <ITreeNode> GetDisplayTreeNodes(string id)
{
ITreeNode node = GetTreeNode(id);
if (node == null)
{
return(RootNodes);
}
IParamBuilder builder = TreeUtil.GetValueBuilder(fSelector, fDefinition,
TopLevel, node.Convert <NormalDataRowTreeNode>());
builder = GetCustomParamBuilder(builder);
if (builder == null)
{
return(Enumerable.Empty <ITreeNode>());
}
//IParamBuilder customSql = fTreeProvider.CustomSql;
//if (builder == null && customSql == null)
// return TreeUtil.CreateEmptyEnumerable();
//if (customSql != null)
// builder = builder == null ? customSql : SqlParamBuilder.CreateParamBuilder(builder, customSql);
var data = TreeUtil.SelectData(fSelector, this, () => fSelector.Select(builder, fOrder), id);
return(TreeUtil.GetDisplayTreeNodes(data, id));
}
public object MoveUpDown(string nodeId, TreeNodeMoveDirection direction)
{
TkDebug.AssertArgumentNull(nodeId, "nodeId", this);
TreeUtil.SortTree(this, fTreeScheme.TreeDefinition, nodeId, direction);
UpdateDatabase();
return(CreateKeyData());
}
public object MoveTreeNode(string srcNodeId, string dstNodeId)
{
TkDebug.AssertArgumentNull(srcNodeId, "srcNodeId", this);
TkDebug.AssertArgumentNull(dstNodeId, "dstNodeId", this);
TreeUtil.MoveTree(this, fTreeScheme.TreeDefinition, srcNodeId, dstNodeId);
UpdateDatabase();
return(CreateKeyData());
}
public IEnumerable <ITreeNode> GetDisplayTreeNodes(string id)
{
int level = fProvider.GetLevel(fDefinition, id);
IParamBuilder builder = TreeUtil.GetLevelBuilder(fSelector, fDefinition,
level, id, fProvider);
var data = TreeUtil.SelectData(fSelector, this, () => fSelector.Select(builder), id);
return(TreeUtil.GetDisplayTreeNodes(data, id));
}
public ITreeNode GetTreeNode(string id)
{
if (!UseCustomParamBuilder)
{
return(TreeUtil.GetTreeNode(fSelector, this, id));
}
else
{
IParamBuilder builder = fSelector.CreateParamBuilder(null,
new string[] { fDefinition.IdField }, id);
return(GetTreeNodes(builder).FirstOrDefault());
}
}
private IEnumerable <ITreeNode> SelectChildNode(string parentId, int level)
{
string value = fProvider.GetSqlLikeValue(fDefinition, level, parentId);
IFieldInfo fieldInfo = fSelector.GetFieldInfo(fDefinition.IdField);
IParamBuilder builder = SqlParamBuilder.CreateSingleSql(fSelector.Context,
fieldInfo, "LIKE", value);
if (!string.IsNullOrEmpty(parentId))
{
builder = SqlParamBuilder.CreateParamBuilder(builder,
SqlParamBuilder.CreateSingleSql(fSelector.Context, fieldInfo,
"<>", fDefinition.IdField + 1, parentId));
}
return(TreeUtil.SelectData(fSelector, this, () => fSelector.Select(builder), null).ToArray());
}
public IEnumerable <ITreeNode> GetChildNodes(string parentId)
{
TkDebug.AssertArgumentNullOrEmpty(parentId, "parentId", this);
if (!UseCustomParamBuilder)
{
return(TreeUtil.SelectData(fSelector, this,
() => fSelector.SelectWithParam(null, fOrder, fDefinition.ParentIdField, parentId),
null).ToArray());
}
else
{
IParamBuilder builder = fSelector.CreateParamBuilder(null,
new string[] { fDefinition.ParentIdField }, parentId);
return(GetTreeNodes(builder).ToArray());
}
}
protected override void OnUpdatingRow(UpdatingEventArgs e)
{
base.OnUpdatingRow(e);
DbTreeDefinition def = fTreeScheme.TreeDefinition;
switch (e.Status)
{
case UpdateKind.Insert:
if (string.IsNullOrEmpty(e.Row[def.ParentIdField].ToString()))
{
e.Row[def.ParentIdField] = def.ExecuteRootId;
}
e.Row[def.LeafField] = 1;
e.Row[def.LayerField] = TreeUtil.GetLayer(this, def, e.Row[def.ParentIdField].ToString());
break;
case UpdateKind.Update:
if (IsFakeDelete && e.InvokeMethod == UpdateKind.Delete)
{
if (e.Row[def.LeafField].Value <int>() == 0)
{
throw new WebPostException("该节点下还有子节点，不能删除！");
}
TreeUtil.SetParentLeaf(this, def, e.Row[def.ParentIdField].ToString());
}
break;
case UpdateKind.Delete:
if (e.Row[def.LeafField].Value <int>() == 0)
{
throw new WebPostException("该节点下还有子节点，不能删除！");
}
SetCommands(AdapterCommand.Update);
TreeUtil.SetParentLeaf(this, def, e.Row[def.ParentIdField].ToString());
break;
}
}
private IEnumerable <ITreeNode> GetTreeNodes(IParamBuilder builder)
{
builder = GetCustomParamBuilder(builder);
return(TreeUtil.SelectData(fSelector, this,
() => fSelector.Select(builder, fOrder), null));
}
public ITreeNode GetTreeNode(string id)
{
return(TreeUtil.GetTreeNode(fSelector, this, id));
}