private MetaTable BuildOrGetMetaTable(ViewTable parentVTable, ViewTable buildingVTable)
{
if (parentVTable == null)
{
//no parent view table mean we are building the root table and must create a meta table.
if (buildingVTable == null)
{
//we must be building a view table when building the root.
DebugUtility.LogError("Failed to build the root view table.");
MemoryProfilerAnalytics.AddMetaDatatoEvent <MemoryProfilerAnalytics.LoadViewXMLEvent>(8);
}
Database.MetaTable metaTable = new Database.MetaTable();
metaTable.name = name;
metaTable.displayName = name;
metaTable.defaultFilter = defaultFilter;
metaTable.defaultAllLevelSortFilter = defaultAllLevelSortFilter;
buildingVTable.m_Meta = metaTable;
return(metaTable);
}
else
{
// if has a parent, use parent's meta table
if (buildingVTable != null)
{
buildingVTable.m_Meta = parentVTable.m_Meta;
}
return(parentVTable.m_Meta);
}
}
public long GetChildCount(ViewSchema vs, ViewTable vTable, Operation.ExpressionParsingContext expressionParsingContext)
{
switch (type)
{
case DataType.Node:
if (vTable.ValidChildNodeIndices != null)
{
return(vTable.ValidChildNodeIndices.LongLength);
}
else
{
return(child.Count);
}
case DataType.Select:
if (vTable.dataSelectSet.IsManyToMany())
{
return(0);
}
else
{
return(vTable.dataSelectSet.GetMainRowCount());
}
case DataType.NoData:
default:
return(0);
}
}
public WhereUnion(List <Where.Builder> builders, ViewSchema vs, ViewTable vTable, SelectSet selectSet, Select select, Schema baseSchema, Table table, Operation.ExpressionParsingContext expressionParsingContext)
{
foreach (var b in builders)
{
Add(b.Build(vs, vTable, selectSet, select, baseSchema, table, expressionParsingContext));
}
}
public bool EvaluateCondition(ViewSchema vs, ViewTable parentViewTable, Operation.ExpressionParsingContext expressionParsingContext)
{
if (condition == null)
{
return(true);
}
using (ScopeDebugContext.Func(() => { return("EvaluateCondition on Node '" + GetFullName() + "'"); }))
{
var option = new Operation.Expression.ParseIdentifierOption(vs, parentViewTable, true, true, null, expressionParsingContext);
option.formatError = (string s, Operation.Expression.ParseIdentifierOption opt) =>
{
string str = "Error while evaluating node condition.";
if (vs != null)
{
str += " schema '" + vs.name + "'";
}
if (parentViewTable != null)
{
str += " view table '" + parentViewTable.GetName() + "'";
}
return(str + " : " + s);
};
var resolvedCondition = condition.Build(option);
if (resolvedCondition == null)
{
return(false);
}
return(resolvedCondition.GetValue(0));
}
}
//A column under a <Node> (or <View>) element is either a declaration (build meta data only) or defines an entry in the parent's ViewColumnNode
public void BuildNodeValue(ViewTable.Builder.BuildingData buildingData, ViewTable vTable, ViewTable.Builder.Node node, long row, ViewTable parentViewTable, Operation.ExpressionParsingContext expressionParsingContext, ref Database.MetaColumn metaColum)
{
BuildOrUpdateDeclaration(buildingData, vTable, ref metaColum, expressionParsingContext);
//If the parent's node data type is Node
if (node.parent != null && node.parent.data.type == ViewTable.Builder.Node.Data.DataType.Node)
{
// this column is an entry in the parent's column
var option = new Operation.Expression.ParseIdentifierOption(buildingData.Schema, parentViewTable, true, true, metaColum != null ? metaColum.Type.scriptingType : null, expressionParsingContext);
option.formatError = (string s, Operation.Expression.ParseIdentifierOption opt) =>
{
return(FormatErrorContextInfo(buildingData.Schema, parentViewTable) + " : " + s);
};
Operation.Expression expression = Operation.Expression.ParseIdentifier(value, option);
//if the meta column does not have a type defined yet, define it as the expression's type.
if (metaColum.Type.scriptingType == null)
{
DataMatchMethod matchMethod = expression.type == typeof(string) ? DataMatchMethod.AsString : DataMatchMethod.AsNumber;
metaColum.Type = new MetaType()
{
scriptingType = expression.type, comparisonMethod = matchMethod
};
}
ViewColumnNode.IViewColumnNode column = BuildOrGetColumnNode(parentViewTable, metaColum, name, expressionParsingContext);
column.SetEntry(row, expression, m_MetaLink);
}
}
static ViewColumnNode.IViewColumnNode BuildOrGetColumnNode(ViewTable vTable, Database.MetaColumn metaColumn, string columnName, Operation.ExpressionParsingContext expressionParsingContext)
{
var column = vTable.GetColumnByName(columnName);
if (column == null)
{
var columnNode = (ViewColumnNode.IViewColumnNode)Operation.ColumnCreator.CreateColumn(typeof(ViewColumnNodeTyped <>), metaColumn.Type);
ViewColumnNode viewColumnNode = new ViewColumnNode(vTable, metaColumn, expressionParsingContext);
columnNode.SetColumn(viewColumnNode);
vTable.SetColumn(metaColumn, columnNode.GetColumn());
return(columnNode);
}
// View table use expand column to decorate the IViewColumnNode with required functionality for expanding rows.
// So we need to get the underlying column, which is the IViewColumnNode we want.
if (column is IColumnDecorator)
{
column = (column as IColumnDecorator).GetBaseColumn();
}
if (column is ViewColumnNode.IViewColumnNode)
{
return((ViewColumnNode.IViewColumnNode)column);
}
else
{
throw new Exception("Expecting column '" + vTable.GetName() + "." + metaColumn.Name + "' to be a from a node data type (ViewColumnNode) but is of type '" + column.GetType().Name + "'");
}
}
// When building as node, the columns are interpreted as entries in the parent's view table.
public void BuildAsNode(ViewTable parentViewTable, long row, ViewSchema vs, Database.Schema baseSchema, Operation.ExpressionParsingContext parentExpressionParsingContext)
{
MetaTable metaTable = BuildOrGetMetaTable(parentViewTable, null);
if (localSelectSet.select.Count > 0)
{
DebugUtility.LogError("Node '" + GetFullName() + " ' cannot have any local select statement when the parent data type is 'node'. Ignoring all selects.");
}
//build columns
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
bool hadMetaColumn = metaColumn != null;
colb.BuildNodeValue(this, row, vs, baseSchema, parentViewTable, parentExpressionParsingContext, ref metaColumn);
// add the metacolum to the metatable if it just got created
if (!hadMetaColumn)
{
metaTable.AddColumn(metaColumn);
}
}
//Build missing column
for (int i = 0; i != metaTable.GetColumnCount(); ++i)
{
var metaColumn = metaTable.GetColumnByIndex(i);
if (!HasColumn(metaColumn.Name))
{
ViewColumn.Builder.BuildNodeValueDefault(this, row, vs, baseSchema, parentViewTable, parentExpressionParsingContext, metaColumn);
}
}
}
// When building as node, the columns are interpreted as entries in the parent's view table.
public void BuildAsNode(BuildingData buildingData, ViewTable parentViewTable, long row, Operation.ExpressionParsingContext parentExpressionParsingContext)
{
MetaTable metaTable = BuildOrGetMetaTable(parentViewTable, null);
if (localSelectSet.select.Count > 0)
{
DebugUtility.LogError("Node '" + GetFullName() + " ' cannot have any local select statement when the parent data type is 'node'. Ignoring all selects.");
}
//build columns
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
colb.BuildNodeValue(buildingData, parentViewTable, this, row, parentViewTable, parentExpressionParsingContext, ref metaColumn);
}
//Build missing column
for (int i = 0; i != metaTable.GetColumnCount(); ++i)
{
var metaColumn = metaTable.GetColumnByIndex(i);
if (!HasColumn(metaColumn.Name))
{
ViewColumn.Builder.BuildNodeValueDefault(buildingData, this, row, parentViewTable, parentExpressionParsingContext, metaColumn);
}
}
}
//Create a column that merge the result of all sub nodes
static public Column BuildColumnNodeMerge(ViewTable vTable, Database.MetaColumn metaColumn, Operation.ExpressionParsingContext expressionParsingContext)
{
var columnNode = (ViewColumnNode.IViewColumnNode)Operation.ColumnCreator.CreateColumn(typeof(ViewColumnNodeMergeTyped <>), metaColumn.Type);
ViewColumnNode viewColumnNode = new ViewColumnNode(vTable, metaColumn, expressionParsingContext);
columnNode.SetColumn(viewColumnNode);
return(columnNode.GetColumn());
}
public void Build(BuildingData buildingData, Node node, ViewTable vTable, ViewTable parent, Operation.ExpressionParsingContext parentExpressionParsingContext)
{
// build selects
vTable.SetupDataSelectSet(dataSelectSet.Build(vTable, buildingData.Schema, buildingData.BaseSchema));
// build columns
switch (type)
{
case Data.DataType.Node:
// these column are declarations
foreach (var colb in column)
{
MetaColumn metaColumn = buildingData.MetaTable.GetColumnByName(colb.name);
colb.BuildOrUpdateDeclaration(buildingData, vTable, ref metaColumn, vTable.ExpressionParsingContext);
}
// for node type we need to build all child node right away as they defines the entries in this viewtable
var validChildNodeIndices = new List <int>();
int iValidChild = 0;
for (int iChild = 0; iChild != child.Count; ++iChild)
{
var c = child[iChild];
if (c.EvaluateCondition(buildingData.Schema, vTable, vTable.ExpressionParsingContext))
{
validChildNodeIndices.Add(iChild);
c.BuildAsNode(buildingData, vTable, (long)iValidChild, vTable.ExpressionParsingContext);
++iValidChild;
}
}
if (iValidChild != child.Count)
{
vTable.ValidChildNodeIndices = validChildNodeIndices.ToArray();
}
else
{
vTable.ValidChildNodeIndices = null;
}
break;
case DataType.Select:
// these columns are instances of ViewColumn. They have the result of select statement as entries
foreach (var colb in column)
{
MetaColumn metaColumn = buildingData.MetaTable.GetColumnByName(colb.name);
var newColumn = colb.Build(buildingData, node, vTable, vTable.ExpressionParsingContext, ref metaColumn);
vTable.SetColumn(metaColumn, newColumn.GetColumn());
}
break;
}
}
public Where Build(ViewSchema vs, ViewTable vTable, SelectSet selectSet, Select select, Schema baseSchema, Table table, Operation.ExpressionParsingContext expressionParsingContext)
{
Where w = new Where();
var option = new Operation.Expression.ParseIdentifierOption(vs, table, true, false, null, expressionParsingContext);
option.formatError = (msg, y) =>
{
return(FormatErrorContextInfo(vs, vTable, select) + msg);
};
option.BypassSelectSetCondition = selectSet;
w.m_Comparison = comparison.Build(option);
return(w);
}
private string FormatErrorContextInfo(ViewSchema vs, ViewTable vTable)
{
string str = "Error while building view column '" + name + "'";
if (vs != null)
{
str += " schema '" + vs.name + "'";
}
if (vTable != null)
{
str += " view table '" + vTable.GetName() + "'";
}
return(str);
}
public void Build(ViewSchema vs, ViewTable vTable, SelectSet selectSet, Select sel, Database.Schema baseSchema, Operation.ExpressionParsingContext expressionParsingContext)
{
if (where.Count > 0)
{
sel.where = new WhereUnion();
foreach (var w in where)
{
var w2 = w.Build(vs, vTable, selectSet, sel, baseSchema, sel.sourceTable, expressionParsingContext);
if (w2.Comparison.IsManyToMany())
{
sel.isManyToMany = true;
}
sel.where.Add(w2);
}
}
}
public SelectSet Build(ViewTable viewTable, ViewSchema viewSchema, Database.Schema baseSchema)
{
if (select.Count == 0)
{
return(null);
}
SelectSet selectSet = new SelectSet();
// Create select statements (first pass)
foreach (var iSelect in select)
{
Select s = iSelect.Create(viewTable.ViewSchema, baseSchema, viewTable);
if (s != null)
{
selectSet.Add(s);
}
else
{
DebugUtility.LogError("Could not create Select named '" + iSelect.name + "'");
}
}
// add current set to the expression parsing hierarchy
var expressionParsingContext = new Operation.ExpressionParsingContext(viewTable.ExpressionParsingContext, selectSet);
// Build select statements (second pass)
var eSelBuilder = select.GetEnumerator();
var eSelList = selectSet.select.GetEnumerator();
while (eSelBuilder.MoveNext())
{
eSelList.MoveNext();
eSelBuilder.Current.Build(viewSchema, viewTable, selectSet, eSelList.Current, baseSchema, expressionParsingContext);
}
if (Condition != null)
{
Operation.Expression.ParseIdentifierOption parseOpt = new Operation.Expression.ParseIdentifierOption(viewSchema, viewTable, true, false, null, expressionParsingContext);
parseOpt.BypassSelectSetCondition = selectSet;
selectSet.Condition = Condition.Build(parseOpt);
}
return(selectSet);
}
private string FormatErrorContextInfo(ViewSchema vs, ViewTable vTable, Select select)
{
string str = "";
if (vs != null && vTable != null)
{
str += "Error while building view '" + vs.name + "' table '" + vTable.GetName() + "'";
}
if (select != null)
{
str += " select '" + select.name + "'";
}
if (str != "")
{
str += ". ";
}
return(str);
}
public ViewTable Build(BuildingData buildingData, ViewTable parent, long row, ViewSchema vs, Database.Schema baseSchema, Operation.ExpressionParsingContext parentExpressionParsingContext)
{
// Check for usage error from data.
if (parent == null && String.IsNullOrEmpty(name))
{
DebugUtility.LogError("Table need a name");
return(null);
}
using (ScopeDebugContext.Func(() => { return("View '" + GetFullName() + "'"); }))
{
// Check for usage error from code.
DebugUtility.CheckCondition(parent == null || (parent.node == this.parent), "Parent ViewTable must points to the node's parent while building child node's ViewTable.");
ViewTable vTable = new ViewTable(vs, baseSchema, this, parentExpressionParsingContext);
// If has local select set, create it and add it to the expression parsing context hierarchy. see [Figure.1]
vTable.SetupLocalSelectSet(localSelectSet.Build(vTable, vs, baseSchema));
MetaTable metaTable = BuildOrGetMetaTable(parent, vTable);
if (buildingData.MetaTable == null)
{
buildingData.MetaTable = metaTable;
}
//declare columns
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
colb.BuildOrUpdateDeclaration(buildingData, vTable, ref metaColumn, vTable.ExpressionParsingContext);
}
if (data != null)
{
data.Build(buildingData, this, vTable, parent, parentExpressionParsingContext);
}
// Fix meta columns (that does not have a data type set) to their fallback value
foreach (var fb in buildingData.FallbackColumnType)
{
if (fb.Key.Type == null)
{
fb.Key.Type = fb.Value;
}
}
//Build missing column with default behavior
for (int i = 0; i != metaTable.GetColumnCount(); ++i)
{
var metaColumn = metaTable.GetColumnByIndex(i);
var column = vTable.GetColumnByIndex(i);
if (column == null)
{
if (metaColumn.DefaultMergeAlgorithm != null)
{
//when we have a merge algorithm, set the entries as the result of each group's merge value.
column = ViewColumn.Builder.BuildColumnNodeMerge(vTable, metaColumn, parentExpressionParsingContext);
}
vTable.SetColumn(metaColumn, column);
}
}
if (data != null && data.type == Data.DataType.Select && vTable.dataSelectSet.IsManyToMany())
{
DebugUtility.LogError("Cannot build a view using a many-to-many select statement. Specify a row value for your select statement where condition(s).");
MemoryProfilerAnalytics.AddMetaDatatoEvent <MemoryProfilerAnalytics.LoadViewXMLEvent>(7);
}
return(vTable);
}
}
public IViewColumn Build(ViewTable.Builder.Node node, ViewSchema vs, Database.Schema baseSchema, ViewTable vTable, Operation.ExpressionParsingContext expressionParsingContext, ref Database.MetaColumn metaColumn)
{
// Check if we have a type mismatch
Type columnValueType = metaColumn != null ? metaColumn.Type : null;
if (value.type != null)
{
if (columnValueType != null && columnValueType != value.type)
{
DebugUtility.LogWarning("While building column '" + name + "' : "
+ "Cannot override type from '" + columnValueType.Name
+ "' to '" + value.type.Name + "'");
}
columnValueType = value.type;
}
// Parse expression value
Operation.Expression.ParseIdentifierOption parseOpt = new Operation.Expression.ParseIdentifierOption(vs, vTable, true, false, columnValueType, expressionParsingContext);
parseOpt.formatError = (string s, Operation.Expression.ParseIdentifierOption opt) => {
return(FormatErrorContextInfo(vs, vTable) + " : " + s);
};
Operation.Expression expression = Operation.Expression.ParseIdentifier(value, parseOpt);
// Build declaration with the type we've just parsed
BuildOrUpdateDeclaration(ref metaColumn, expression.type);
IViewColumn result = (IViewColumn)Operation.ColumnCreator.CreateViewColumnExpression(expression);
ViewColumn vc = new ViewColumn();
vc.m_MetaLink = m_MetaLink;
vc.viewTable = vTable;
vc.ParsingContext = expressionParsingContext;
result.SetColumn(vc, null);
return(result);
}
// Set a Node value to the merged result of it's sub entries
public static void BuildNodeValueDefault(ViewTable.Builder.Node node, long row, ViewSchema vs, Database.Schema baseSchema, ViewTable parentViewTable, Operation.ExpressionParsingContext expressionParsingContext, Database.MetaColumn metaColumn)
{
//set the entry for merge column
if (metaColumn.DefaultMergeAlgorithm != null && metaColumn.Type != null)
{
ViewColumnNode.IViewColumnNode column = BuildOrGetColumnNode(parentViewTable, metaColumn, metaColumn.Name, expressionParsingContext);
Operation.Expression expression = Operation.ColumnCreator.CreateTypedExpressionColumnMerge(metaColumn.Type, parentViewTable, row, column.GetColumn(), metaColumn);
column.SetEntry(row, expression, null);
}
}
//A column under a <Node> (or <View>) element is either a declaration (build meta data only) or defines an entry in the parent's ViewColumnNode
public void BuildNodeValue(ViewTable.Builder.Node node, long row, ViewSchema vs, Database.Schema baseSchema, ViewTable parentViewTable, Operation.ExpressionParsingContext expressionParsingContext, ref Database.MetaColumn metaColum)
{
BuildOrUpdateDeclaration(ref metaColum);
//If the parent's node data type is Node
if (node.parent != null && node.parent.data.type == ViewTable.Builder.Node.Data.DataType.Node)
{
// this column is an entry in the parent's column
var option = new Operation.Expression.ParseIdentifierOption(vs, parentViewTable, true, true, metaColum != null ? metaColum.Type : null, expressionParsingContext);
option.formatError = (string s, Operation.Expression.ParseIdentifierOption opt) =>
{
return(FormatErrorContextInfo(vs, parentViewTable) + " : " + s);
};
Operation.Expression expression = Operation.Expression.ParseIdentifier(value, option);
//if the meta column does not have a type defined yet, define it as the expression's type.
if (metaColum.Type == null)
{
metaColum.Type = expression.type;
}
ViewColumnNode.IViewColumnNode column = BuildOrGetColumnNode(parentViewTable, metaColum, name, expressionParsingContext);
column.SetEntry(row, expression, m_MetaLink);
}
}
public ViewTable Build(ViewTable parent, long row, ViewSchema vs, Database.Schema baseSchema, Operation.ExpressionParsingContext parentExpressionParsingContext)
{
// Check for usage error from data.
if (parent == null && String.IsNullOrEmpty(name))
{
DebugUtility.LogError(FormatErrorContextInfo(vs) + ": Table need a name");
return(null);
}
using (ScopeDebugContext.Func(() => { return("View '" + GetFullName() + "'"); }))
{
// Check for usage error from code.
DebugUtility.CheckCondition(parent == null || (parent.node == this.parent), FormatErrorContextInfo(vs) + ": Parent ViewTable must points to the node's parent while building child node's ViewTable.");
if (data == null)
{
//no data
return(null);
}
ViewTable vTable = new ViewTable(vs, baseSchema);
vTable.node = this;
vTable.parentExpressionParsingContext = parentExpressionParsingContext;
vTable.expressionParsingContext = parentExpressionParsingContext;
// If has local select set, create it and add it to the expression parsing context hierarchy. see [Figure.1]
vTable.localSelectSet = localSelectSet.Build(vTable, vs, baseSchema);
if (vTable.localSelectSet != null)
{
vTable.expressionParsingContext = new Operation.ExpressionParsingContext(vTable.expressionParsingContext, vTable.localSelectSet);
}
MetaTable metaTable = BuildOrGetMetaTable(parent, vTable);
//declare columns
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
bool hadMetaColumn = metaColumn != null;
colb.BuildOrUpdateDeclaration(ref metaColumn);
// add the metacolum to the metatable if it just got created
if (!hadMetaColumn)
{
metaTable.AddColumn(metaColumn);
}
}
data.Build(this, vTable, parent, vs, baseSchema, parentExpressionParsingContext, metaTable);
//Build missing column with default behavior
for (int i = 0; i != metaTable.GetColumnCount(); ++i)
{
var metaColumn = metaTable.GetColumnByIndex(i);
var column = vTable.GetColumnByIndex(i);
if (column == null)
{
if (metaColumn.DefaultMergeAlgorithm != null)
{
//when we have a merge algorithm, set the entries as the result of each group's merge value.
column = ViewColumn.Builder.BuildColumnNodeMerge(vTable, metaColumn, parentExpressionParsingContext);
}
vTable.SetColumn(metaColumn, column);
}
}
if (data.type == Data.DataType.Select && vTable.dataSelectSet.IsManyToMany())
{
DebugUtility.LogError("Cannot build the view table '" + vTable.GetName() + "' using a many-to-many select statement. Specify a row value for your select statement where condition(s).");
MemoryProfilerAnalytics.AddMetaDatatoEvent <MemoryProfilerAnalytics.LoadViewXMLEvent>(7);
}
return(vTable);
}
}
// a column declaration only creates or adds to the column meta data. it does not create the actual column.
public void BuildOrUpdateDeclaration(ViewTable.Builder.BuildingData buildingData, ViewTable vTable, ref MetaColumn metaColumn, Operation.ExpressionParsingContext expressionParsingContext, Type aOverrideType = null)
{
Type finalType = aOverrideType != null
? aOverrideType
: (value == null
? null
: value.type
);
//Build meta data
var mergeAlgo = BuildOrGetMergeAlgo(null, finalType, metaColumn);
BuildOrUpdateMetaColumn(buildingData, ref metaColumn, finalType, mergeAlgo);
if (metaColumn != null && metaColumn.Type.scriptingType == null && finalType == null && !buildingData.FallbackColumnType.ContainsKey(metaColumn))
{
Operation.Expression.ParseIdentifierOption parseOpt = new Operation.Expression.ParseIdentifierOption(buildingData.Schema, vTable, true, false, null, expressionParsingContext);
var fallbackType = Operation.Expression.ResolveTypeOf(value, parseOpt);
if (fallbackType != null)
{
buildingData.FallbackColumnType.Add(metaColumn, fallbackType);
}
}
}
public ViewColumnNode(ViewTable viewTable, MetaColumn metaColumn, Operation.ExpressionParsingContext parsingContext)
{
this.viewTable = viewTable;
this.metaColumn = metaColumn;
ParsingContext = parsingContext;
}
public void Build(Node node, ViewTable vTable, ViewTable parent, ViewSchema vs, Database.Schema baseSchema, Operation.ExpressionParsingContext parentExpressionParsingContext, MetaTable metaTable)
{
// build selects
vTable.dataSelectSet = dataSelectSet.Build(vTable, vs, baseSchema);
if (vTable.dataSelectSet != null)
{
// add the select set to the expression parsing context hierarchy. see [Figure.1]
vTable.expressionParsingContext = new Operation.ExpressionParsingContext(vTable.expressionParsingContext, vTable.dataSelectSet);
}
// build columns
switch (type)
{
case Data.DataType.Node:
// these column are declarations
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
bool hadMetaColumn = metaColumn != null;
colb.BuildOrUpdateDeclaration(ref metaColumn);
// add the metacolum to the metatable if it just got created
if (!hadMetaColumn)
{
metaTable.AddColumn(metaColumn);
}
}
// for node type we need to build all child node right away as they defines the entries in this viewtable
var validChildNodeIndices = new List <int>();
int iValidChild = 0;
for (int iChild = 0; iChild != child.Count; ++iChild)
{
var c = child[iChild];
if (c.EvaluateCondition(vs, vTable, vTable.expressionParsingContext))
{
validChildNodeIndices.Add(iChild);
c.BuildAsNode(vTable, (long)iValidChild, vs, baseSchema, vTable.expressionParsingContext);
++iValidChild;
}
}
if (iValidChild != child.Count)
{
vTable.ValidChildNodeIndices = validChildNodeIndices.ToArray();
}
else
{
vTable.ValidChildNodeIndices = null;
}
break;
case DataType.Select:
// these columns are instances of ViewColumn. They have the result of select statement as entries
foreach (var colb in column)
{
MetaColumn metaColumn = metaTable.GetColumnByName(colb.name);
bool hadMetaColumn = metaColumn != null;
var newColumn = colb.Build(node, vs, baseSchema, vTable, vTable.expressionParsingContext, ref metaColumn);
// add the metacolum to the metatable if it just got created
if (!hadMetaColumn)
{
metaTable.AddColumn(metaColumn);
}
vTable.SetColumn(metaColumn, newColumn.GetColumn());
}
break;
}
}