/// <summary>
/// Bind the select and expand clause <see cref="SelectExpandClause"/> at this level.
/// </summary>
/// <param name="expandToken">The expand token to visit.</param>
/// <param name="selectToken">The select token to visit.</param>
/// <param name="segments">The parsed segments to visit.</param>
/// <returns>The null or the built select and expand clause.</returns>
private SelectExpandClause BindSelectExpand(ExpandToken expandToken, SelectToken selectToken,
IList <ODataPathSegment> segments, IEdmNavigationSource navigationSource, IEdmTypeReference elementType,
HashSet <EndPathToken> generatedProperties = null, bool collapsed = false)
{
if (expandToken != null || selectToken != null)
{
BindingState binding = CreateBindingState(this.Configuration, navigationSource, elementType, generatedProperties, collapsed);
SelectExpandBinder selectExpandBinder = new SelectExpandBinder(this.Configuration,
new ODataPathInfo(new ODataPath(segments)), binding);
return(selectExpandBinder.Bind(expandToken, selectToken));
}
else
{
// It's better to return null for both Expand and Select are null.
// However, in order to be consistent, we returns the empty SelectExpandClause with AllSelected = true.
return(new SelectExpandClause(new Collection <SelectItem>(), true));
}
}
/// <summary>
/// Add semantic meaning to a Select or Expand Token
/// </summary>
/// <param name="odataPathInfo">The path info from Uri path.</param>
/// <param name="expandToken">the syntactically parsed expand token</param>
/// <param name="selectToken">the syntactically parsed select token</param>
/// <param name="configuration">The configuration to use for parsing.</param>
/// <param name="state">The state of binding.</param>
/// <returns>A select expand clause bound to metadata.</returns>
public static SelectExpandClause Bind(
ODataPathInfo odataPathInfo,
ExpandToken expandToken,
SelectToken selectToken,
ODataUriParserConfiguration configuration,
BindingState state)
{
ExpandToken normalizedExpand = ExpandTreeNormalizer.NormalizeExpandTree(expandToken);
SelectToken normalizedSelect = SelectTreeNormalizer.NormalizeSelectTree(selectToken);
SelectExpandBinder selectExpandBinder = new SelectExpandBinder(configuration, odataPathInfo, state);
SelectExpandClause clause = selectExpandBinder.Bind(normalizedExpand, normalizedSelect);
SelectExpandClauseFinisher.AddExplicitNavPropLinksWhereNecessary(clause);
new ExpandDepthAndCountValidator(configuration.Settings.MaximumExpansionDepth, configuration.Settings.MaximumExpansionCount).Validate(clause);
return(clause);
}
/// <summary>
/// Add semantic meaning to a Select or Expand Token
/// </summary>
/// <param name="odataPathInfo">The path info from Uri path.</param>
/// <param name="expandToken">the syntactically parsed expand token</param>
/// <param name="selectToken">the syntactically parsed select token</param>
/// <param name="configuration">The configuration to use for parsing.</param>
/// <returns>A select expand clause bound to metadata.</returns>
public SelectExpandClause Bind(
ODataPathInfo odataPathInfo,
ExpandToken expandToken,
SelectToken selectToken,
ODataUriParserConfiguration configuration)
{
ExpandToken unifiedSelectExpandToken = SelectExpandSyntacticUnifier.Combine(expandToken, selectToken);
ExpandTreeNormalizer expandTreeNormalizer = new ExpandTreeNormalizer();
ExpandToken normalizedSelectExpandToken = expandTreeNormalizer.NormalizeExpandTree(unifiedSelectExpandToken);
SelectExpandBinder selectExpandBinder = new SelectExpandBinder(configuration, odataPathInfo);
SelectExpandClause clause = selectExpandBinder.Bind(normalizedSelectExpandToken);
SelectExpandClauseFinisher.AddExplicitNavPropLinksWhereNecessary(clause);
new ExpandDepthAndCountValidator(configuration.Settings.MaximumExpansionDepth, configuration.Settings.MaximumExpansionCount).Validate(clause);
return(clause);
}
/// <summary>
/// Generate a SubExpand based on the current nav property and the curren token
/// </summary>
/// <param name="tokenIn">the current token</param>
/// <returns>a new SelectExpand clause bound to the current token and nav prop</returns>
private SelectExpandClause GenerateSubExpand(ExpandTermToken tokenIn)
{
SelectExpandBinder nextLevelBinder = new SelectExpandBinder(this.Configuration, new ODataPathInfo(new ODataPath(this.parsedSegments)));
return(nextLevelBinder.BindSubLevel(tokenIn.ExpandOption));
}