public static DbFunctionExpression GetReparentedValue(this DbExpression hierarchyIdValue, DbExpression oldRoot, DbExpression newRoot)
{
Check.NotNull(hierarchyIdValue, "hierarchyIdValue");
Check.NotNull(oldRoot, "oldRoot");
Check.NotNull(newRoot, "newRoot");
return(EdmFunctions.InvokeCanonicalFunction("GetReparentedValue", hierarchyIdValue, oldRoot, newRoot));
}
/// <summary>
/// Creates a <see cref="DbFunctionExpression" /> that invokes the canonical 'GetDescendant' function with the
/// specified argument, which must have a HierarchyId result type.
/// The result type of the expression is Edm.HierarchyId.
/// </summary>
/// <param name="hierarchyIdValue"> An expression that specifies the hierarchyid value. </param>
/// <param name="child1"> An expression that provides a hierarchyid value. </param>
/// <param name="child2"> An expression that provides a hierarchyid value. </param>
/// <returns> A new DbFunctionExpression that returns a hierarchyid. </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="hierarchyIdValue" />
/// or
/// <paramref name="child1" />
/// or
/// <paramref name="child2" />
/// is null.
/// </exception>
/// <exception cref="ArgumentException">
/// No overload of the canonical 'GetDescendant' function accept an argument with the result type of
/// <paramref name="child1" />
/// and
/// <paramref name="child2" />
/// .
/// </exception>
public static DbFunctionExpression GetDescendant(this DbExpression hierarchyIdValue, DbExpression child1, DbExpression child2)
{
Check.NotNull(hierarchyIdValue, "hierarchyIdValue");
Check.NotNull(child1, "child1");
Check.NotNull(child2, "child2");
return(EdmFunctions.InvokeCanonicalFunction("GetDescendant", hierarchyIdValue, child1, child2));
}
public static DbFunctionExpression GetAncestor(this DbExpression hierarchyIdValue, DbExpression n)
{
Check.NotNull(hierarchyIdValue, "hierarchyIdValue");
Check.NotNull(n, "n");
return(EdmFunctions.InvokeCanonicalFunction("GetAncestor", hierarchyIdValue, n));
}
public static DbFunctionExpression HierarchyIdGetRoot()
{
return(EdmFunctions.InvokeCanonicalFunction("HierarchyIdGetRoot"));
}
// HierarchyId ‘Static’ Functions
/// <summary>
/// Creates a <see cref="DbFunctionExpression" /> that invokes the canonical 'HierarchyIdParse' function with the
/// specified argument, which must have a string result type.
/// The result type of the expression is Edm.HierarchyId.
/// </summary>
/// <param name="input"> An expression that provides the canonical representation of the hierarchyid value. </param>
/// <returns> A new DbFunctionExpression that returns a new hierarchyid value based on the specified value. </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="input" />
/// is null.
/// </exception>
/// <exception cref="ArgumentException">
/// No overload of the canonical 'HierarchyIdParse' function accept an argument with the result type of
/// <paramref name="input" />
/// .
/// </exception>
public static DbFunctionExpression HierarchyIdParse(DbExpression input)
{
Check.NotNull(input, "input");
return(EdmFunctions.InvokeCanonicalFunction("HierarchyIdParse", input));
}
/// <summary>
/// Creates a <see cref="DbFunctionExpression" /> that invokes the canonical 'IsDescendantOf' function with the
/// specified argument, which must have a HierarchyId result type.
/// The result type of the expression is Int32.
/// </summary>
/// <param name="hierarchyIdValue"> An expression that specifies the hierarchyid value. </param>
/// <param name="parent"> An expression that provides a hierarchyid value. </param>
/// <returns> A new DbFunctionExpression that returns an integer value. </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="hierarchyIdValue" />
/// or
/// <paramref name="parent" />
/// is null.
/// </exception>
/// <exception cref="ArgumentException">
/// No overload of the canonical 'IsDescendantOf' function accept an argument with the result type of
/// <paramref name="parent" />
/// .
/// </exception>
public static DbFunctionExpression IsDescendantOf(this DbExpression hierarchyIdValue, DbExpression parent)
{
Check.NotNull(hierarchyIdValue, "hierarchyIdValue");
Check.NotNull(parent, "parent");
return(EdmFunctions.InvokeCanonicalFunction("IsDescendantOf", hierarchyIdValue, parent));
}
/// <summary>
/// Creates a <see cref="DbFunctionExpression" /> that invokes the canonical 'GetLevel' function.
/// The result type of the expression is Int32.
/// </summary>
/// <param name="hierarchyIdValue"> An expression that specifies the hierarchyid value. </param>
/// <returns> A new DbFunctionExpression that returns the level of the given hierarchyid. </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="hierarchyIdValue" />
/// is null.
/// </exception>
public static DbFunctionExpression GetLevel(this DbExpression hierarchyIdValue)
{
Check.NotNull(hierarchyIdValue, "hierarchyIdValue");
return(EdmFunctions.InvokeCanonicalFunction("GetLevel", hierarchyIdValue));
}