qwsdcvghyu89
18c5ad83da
- Removed obsolete data providers: `AnchorCollectionDataProvider`, `ContentsDataProvider`, and others, consolidating logic into new composable providers. - Added `ComposeDataProviders`, `SelectDataProvider`, and `RelationalDataProvider` for improved flexibility and reusability. - Introduced `IManySelectionComposableDataProvider` interface to support multiple-node selection. - Enhanced `UnitDownloader` with more robust progress tracking. - Updated package references and project dependencies for consistency. - Improved error handling in `StealthConfig` initialization for better fallback on browser drivers. - Incremented project version to 2.4.5.
83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
using Beam.Abstractions;
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using HtmlAgilityPack;
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namespace Beam.Dynamic;
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/// <summary>
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/// Allows composition of different data providers to adapt to different types of data.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public class ComposeDataProviders<T> : IComposableDataProvider<T> {
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public required IComposableDataProvider<object>[] SelectWith { get; init; }
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public required IComposableDataProvider<T> GetWith { get; init; }
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private ComposeDataProviders() {}
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public static ComposeDataProviders<T> Create(IComposableDataProvider<object> selectWith, IComposableDataProvider<T> getWith) {
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return new ComposeDataProviders<T>() {
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GetWith = getWith,
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SelectWith = [selectWith]
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};
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}
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public static ComposeDataProviders<T> Create(IComposableDataProvider<object>[] selectWiths, IComposableDataProvider<T> getWith) {
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return new ComposeDataProviders<T>() {
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GetWith = getWith,
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SelectWith = selectWiths
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};
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}
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/// <summary>
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/// Composes the data providers, first selecting a node with <see cref="SelectWith"/>, then getting the data with <see cref="GetWith"/>.
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/// </summary>
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/// <exception cref="Exception">Throws when <see cref="SelectWith"/> returns a null value.</exception>
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/// <param name="document"></param>
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/// <returns></returns>
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public T Get(HtmlDocument document) {
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var selected = Select(document);
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if (selected is null)
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throw new Exception("Selection operation failed.");
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return GetWith.Get(selected);
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}
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/// <summary>
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/// Uses the <see cref="GetWith"/> data provider to get the data from the supplied node.
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/// </summary>
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/// <param name="node"></param>
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/// <returns></returns>
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public T Get(HtmlNode node) {
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return GetWith.Get(node);
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}
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/// <summary>
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/// Uses the <see cref="SelectWith"/> data provider to select a node from the supplied document.
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/// </summary>
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/// <param name="doc"></param>
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/// <returns></returns>
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public HtmlNode? Select(HtmlDocument doc) {
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var selected = SelectWith[0].Select(doc);
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foreach(var provider in SelectWith.Skip(1)) {
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if (selected is null)
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return null;
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selected = provider.Select(selected);
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}
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return selected;
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}
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/// <summary>
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/// Uses the <see cref="SelectWith"/> data provider to select a node from the supplied document.
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/// </summary>
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/// <param name="doc"></param>
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/// <returns></returns>
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public HtmlNode? Select(HtmlNode node) {
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var selected = SelectWith[0].Select(node);
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foreach(var provider in SelectWith.Skip(1)) {
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if (selected is null)
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return null;
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selected = provider.Select(selected);
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}
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return selected;
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}
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} |