/// <summary>
/// Visitor implementation. Adds code to InitClass and InitVars methods of the DataTable classes.
/// </summary>
/// <param name="element"></param>
public override void Visit(VisitableElementComplexType element)
{
// The base visitor will initialize the variables.
base.Visit(element);
if (!IsDataSet)
{
string xpath;
ArrayList fieldsref = new ArrayList();
ArrayList fieldskey = new ArrayList();
CodeMemberMethod initclass = RetrieveMethod(CurrentDataSetType, "InitClass");
CodeMemberMethod initvars = RetrieveMethod(CurrentDataSetType, "InitVars");
#region Initialize InitVars method.
//this.tablepublishers = ((publishersDataTable)(this.Tables["publishers"]));
initvars.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
new CodeCastExpression(element.Name + Configuration.CollectionNaming,
new CodeIndexerExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Tables"),
new CodeExpression[] { new CodePrimitiveExpression(element.Name) }))));
//if ((this.tablepublishers != null)) this.tablepublishers.InitVars();
initvars.Statements.Add(
new CodeConditionStatement(
new CodeBinaryOperatorExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
CodeBinaryOperatorType.IdentityInequality,
new CodePrimitiveExpression(null)),
new CodeStatement[] {
new CodeExpressionStatement(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
"InitVars",
new CodeExpression[0]))
}));
#endregion
#region Initialize InitClass method.
//this.tablepublishers = new publishersDataTable();
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
new CodeObjectCreateExpression(
element.Name + Configuration.CollectionNaming, new CodeExpression[0])));
//this.Tables.Add(this.tablepublishers);
initclass.Statements.Add(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Tables"),
"Add", new CodeExpression[] {
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name)
}));
#endregion
#region Retrieve keyref nodes.
xpath = ".//";
xpath += RetrievePrefix();
xpath += element.Name;
xpath = "//xsd:keyref[xsd:selector/@xpath=\"" + xpath + "\"]";
XmlNodeList keyrefs = CurrentSchemaDom.SelectNodes(xpath, Namespaces);
foreach (XmlNode keyref in keyrefs)
{
string parentname = String.Empty;
string fkname = keyref.Attributes.GetNamedItem("name").Value;
if (keyref.Attributes.GetNamedItem("ConstraintName") != null)
{
fkname = keyref.Attributes.GetNamedItem("ConstraintName").Value;
}
// Retrieve fields which form the keyref
foreach (XmlNode node in keyref.ChildNodes)
{
if (node.LocalName == "field")
{
fieldsref.Add(Regex.Replace(node.Attributes.GetNamedItem("xpath").Value, "([A-z|0-9]+):", ""));
}
}
//Retrieve the key being referenced and its fields
xpath = ".//xsd:key[@name=\"" + keyref.Attributes.GetNamedItem("refer").Value + "\"] | ";
xpath += ".//xsd:unique[@name=\"" + keyref.Attributes.GetNamedItem("refer").Value + "\"]";
XmlNode key = CurrentSchemaDom.SelectSingleNode(xpath, Namespaces);
if (key == null)
{
throw new ArgumentException("A referenced key couldn't be found.");
}
foreach (XmlNode node in key.ChildNodes)
{
if (node.LocalName == "field")
{
fieldskey.Add(
Regex.Replace(node.Attributes.GetNamedItem("xpath").Value, "([A-z|0-9]+):", "").
Replace(".", "").Replace("/", ""));
}
else if (node.LocalName == "selector")
{
parentname = Regex.Replace(node.Attributes.GetNamedItem("xpath").Value, "([A-z|0-9]+):", "").
Replace(".", "").Replace("/", "");
}
}
#region Create Foreign Key
CodeExpression[] fields = new CodeExpression[fieldskey.Count];
for (int i = 0; i < fieldskey.Count; i++)
{
fields[i] = new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + parentname),
fieldskey[i].ToString() + "Column");
}
CodeArrayCreateExpression parentfldcreate =
new CodeArrayCreateExpression(typeof(DataColumn), fields);
fields = new CodeExpression[fieldsref.Count];
for (int i = 0; i < fieldsref.Count; i++)
{
fields[i] = new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
fieldsref[i].ToString() + "Column");
}
CodeArrayCreateExpression childfldcreate =
new CodeArrayCreateExpression(typeof(DataColumn), fields);
//fkc = new ForeignKeyConstraint("publisherstitles", new DataColumn[] {
// this.tablepublishers.pub_idColumn,
// this.tablepublishers.pub_nameColumn}, new DataColumn[] {
// this.tabletitles.titlepub_idColumn,
// this.tabletitles.titleColumn});
initclass.Statements.Add(
new CodeAssignStatement(
new CodeVariableReferenceExpression("fkc"),
new CodeObjectCreateExpression(typeof(ForeignKeyConstraint),
new CodeExpression[] {
new CodePrimitiveExpression(fkname), parentfldcreate, childfldcreate
})));
#endregion
#region Add and initialize the Foreign Key
//this.tabletitles.Constraints.Add(fkc);
initclass.Statements.Add(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "table" + element.Name),
"Constraints"),
"Add", new CodeExpression[] { new CodeVariableReferenceExpression("fkc") }));
//fkc.AcceptRejectRule = AcceptRejectRule.None;
CodeExpression arrule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(AcceptRejectRule)), "None");
if (keyref.Attributes.GetNamedItem("AcceptRejectRule") != null)
{
arrule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(AcceptRejectRule)),
keyref.Attributes.GetNamedItem("AcceptRejectRule").Value);
}
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression("fkc"), "AcceptRejectRule"), arrule));
//fkc.DeleteRule = Rule.Cascade;
CodeExpression rule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(Rule)), "Cascade");
if (keyref.Attributes.GetNamedItem("DeleteRule") != null)
{
arrule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(Rule)),
keyref.Attributes.GetNamedItem("DeleteRule").Value);
}
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression("fkc"), "DeleteRule"), rule));
//fkc.UpdateRule = Rule.Cascade;
rule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(Rule)), "Cascade");
if (keyref.Attributes.GetNamedItem("UpdateRule") != null)
{
arrule = new CodeFieldReferenceExpression(
new CodeTypeReferenceExpression(typeof(Rule)),
keyref.Attributes.GetNamedItem("UpdateRule").Value);
}
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeVariableReferenceExpression("fkc"), "UpdateRule"), rule));
#endregion
#region Add and initialize the DataRelation
if (keyref.Attributes.GetNamedItem("ConstraintOnly") == null ||
keyref.Attributes.GetNamedItem("ConstraintOnly").Value != "false")
{
string relation = keyref.Attributes.GetNamedItem("name").Value;
//private DataRelation relationpublisherstitles; (at dataset-level)
CodeMemberField fld = new CodeMemberField(
typeof(DataRelation), "relation" + keyref.Attributes.GetNamedItem("name").Value);
fld.Attributes = MemberAttributes.Private;
CurrentDataSetType.Members.Add(fld);
//In InitVars:
//this.relationpublisherstitles = this.Relations["publisherstitles"];
initvars.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "relation" + relation),
new CodeIndexerExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Relations"),
new CodeExpression[] { new CodePrimitiveExpression(relation) })));
//this.relationpublisherstitles = new DataRelation("publisherstitles", new DataColumn[] {
// this.tablepublishers.pub_idColumn,
// this.tablepublishers.pub_nameColumn}, new DataColumn[] {
// this.tabletitles.titlepub_idColumn,
// this.tabletitles.titleColumn}, false);
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "relation" + relation),
new CodeObjectCreateExpression(
typeof(DataRelation),
new CodeExpression[] {
new CodePrimitiveExpression(relation), parentfldcreate, childfldcreate
})));
//this.relationpublishertitles.Nested = true;
if (element.Parent != null && element.Parent is VisitableElementComplexType)
{
initclass.Statements.Add(
new CodeAssignStatement(
new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "relation" + relation),
"Nested"),
new CodePrimitiveExpression(true)));
}
//this.Relations.Add(this.relationpublisherstitles);
initclass.Statements.Add(
new CodeMethodInvokeExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Relations"),
"Add", new CodeExpression[] {
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "relation" + relation)
}));
// Add the property to retrieve child rows to the parent type.
parentname += Configuration.TypeNaming;
string childname = element.Name + Configuration.TypeNaming;
foreach (CodeTypeMember type in CurrentNamespace.Types)
{
if (type.Name == parentname)
{
//public titlesRow[] GettitlesRows() {
// return ((titlesRow[])
// (this.GetChildRows(this.Table.ChildRelations["publisherstitles"]))); }
CodeMemberMethod getrows = new CodeMemberMethod();
getrows.Attributes = MemberAttributes.Public | MemberAttributes.Final;
getrows.ReturnType = new CodeTypeReference(childname, 0);
getrows.Name = "Get" + childname;
getrows.Statements.Add(
new CodeMethodReturnStatement(
new CodeCastExpression(new CodeTypeReference(childname, 0),
new CodeMethodInvokeExpression(
new CodeThisReferenceExpression(), "GetChildRows",
new CodeExpression[] {
new CodeIndexerExpression(
new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Table"),
"ChildRelations"),
new CodeExpression[] {
new CodePrimitiveExpression(relation)
})
}))));
break;
}
}
}
#endregion
}
#endregion
/*
* internal void InitVars() {
* this.relationtitlestitleauthors = this.Relations["titlestitleauthors"];
* }
*/
#region Add the Get* method to the parent elements in the relations
/*
* public titlesRow[] GettitlesRows()
* {
* return ((titlesRow[])(this.GetChildRows(this.Table.ChildRelations["publisherstitles"])));
* }
*/
#endregion
}
}
/// <summary>
/// Looks for keys which use the element, and adds parent or child references.
/// </summary>
/// <param name="element">The element being inspected.</param>
/// <remarks>In an xsd schema, the following represents a foreign-key:
/// >xsd:keyref name="publisherstitles" refer="publisherKey"<
/// >xsd:selector xpath=".//mstns:titles" /<
/// >xsd:field xpath="mstns:pub_id" /<
/// >/xsd:keyref<
/// the "refer" attribute designates the parent key.
/// The xsd:selector represents the child element and xsd:field the
/// children field which points to the parent key. There may be multiple fields.
/// </remarks>
public override void Visit(VisitableElementComplexType element)
{
base.Visit(element);
if (!IsDataSet)
{
string xpath;
#region Look for parent relations
// We need to look for every keyref where the current element appears in the xsd:selector element
xpath = ".//";
xpath += RetrievePrefix();
xpath += element.Name;
xpath = ".//xsd:keyref[xsd:selector/@xpath=\"" + xpath + "\"]";
XmlNodeList keyrefs = CurrentSchemaDom.SelectNodes(xpath, Namespaces);
foreach (XmlNode keyref in keyrefs)
{
string parent;
xpath = ".//xsd:key[@name=\"" + keyref.Attributes["refer"].Value + "\"] | ";
xpath += ".//xsd:unique[@name=\"" + keyref.Attributes["refer"].Value + "\"]";
XmlNode key = CurrentSchemaDom.SelectSingleNode(xpath, Namespaces);
XmlNode parentnode = CurrentSchemaDom.SelectSingleNode(
"//xsd:element[@name=\"" +
Regex.Replace(key.SelectSingleNode("xsd:selector/@xpath", Namespaces).Value,
"([A-z|0-9|.|/]+):", "") + "\"]", Namespaces);
parent = parentnode.Attributes["name"].Value;
//public publishersRow publishers
CodeMemberProperty prop = new CodeMemberProperty();
prop.Name = parent;
prop.Attributes = MemberAttributes.Public;
prop.HasGet = true;
prop.HasSet = true;
prop.Type = new CodeTypeReference(parent + Configuration.TypeNaming);
#region Property Get
// get {
// return ((publishersRow)GetParentRow("publisherstitles", typeof(publishersRow)));
// }
prop.GetStatements.Add(
//return
new CodeMethodReturnStatement(
//(publishersRow)
new CodeCastExpression(
parent + Configuration.TypeNaming,
//(GetParentRow
new CodeMethodInvokeExpression(null, "GetParentRow",
//"publishertitltes"
new CodeExpression[] {
new CodePrimitiveExpression(keyref.Attributes["name"].Value),
//, typeof(publishersRow)
new CodeTypeOfExpression(parent + Configuration.TypeNaming)
}))));
#endregion
#region Property Set
// set { SetParentRow(value, this.Table.ParentRelations["publisherstitles"]); }
prop.SetStatements.Add(
//SetParentRow
new CodeMethodInvokeExpression(null, "SetParentRow",
new CodeExpression[] {
//(value
new CodeVariableReferenceExpression("value"),
//, this.Table.ParentRelations
new CodeIndexerExpression(
new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeThisReferenceExpression(), "Table"),
"ParentRelations"),
//["publisherstitles"]
new CodePrimitiveExpression(keyref.Attributes["name"].Value))
}));
#endregion
CurrentType.Members.Add(prop);
}
#endregion
#region Look for child relations
// We need to look for every keyref where the current element appears in the "refer" key
xpath = ".//";
xpath += RetrievePrefix();
xpath += element.Name;
xpath = ".//xsd:key[xsd:selector/@xpath=\"" + xpath + "\"] | " +
".//xsd:unique[xsd:selector/@xpath=\"" + xpath + "\"]";
XmlNodeList keys = CurrentSchemaDom.SelectNodes(xpath, Namespaces);
// For each key, try to find a keyref pointing to it.
foreach (XmlNode key in keys)
{
xpath = ".//xsd:keyref[@refer=\"" + key.Attributes["name"].Value + "\"]";
XmlNode keyref = CurrentSchemaDom.SelectSingleNode(xpath, Namespaces);
if (keyref != null)
{
// Convert ".//mstns:titles" to "titles"
string child = Regex.Replace(
keyref.SelectSingleNode("xsd:selector/@xpath", Namespaces).Value,
"([A-z|0-9|.|/]+):", "");
//public titlesRow[] titles() {
// return ((titlesRow[])(GetChildRows("publisherstitles", typeof(titlesRow)));
//}
CodeMemberProperty prop = new CodeMemberProperty();
//titlesRow[]
CodeTypeReference type = new CodeTypeReference(child + Configuration.TypeNaming, 1);
prop.Name = child;
prop.Type = type;
prop.Attributes = MemberAttributes.Public | MemberAttributes.Final;
prop.HasGet = true;
prop.GetStatements.Add(
//return
new CodeMethodReturnStatement(
//(titlesRow[])
new CodeCastExpression(type,
new CodeMethodInvokeExpression(null, "GetChildRows",
new CodeExpression[] {
//"publisherstitles"
new CodePrimitiveExpression(keyref.Attributes["name"].Value),
new CodeTypeOfExpression(child + Configuration.TypeNaming)
}))));
CurrentType.Members.Add(prop);
}
}
#endregion
}
}