ComparisonEvaluationResult

ComparisonEvaluationResult(bool)

إنشاء نتيجة تقييم المقارنة.

public ComparisonEvaluationResult(bool result)

أمثلة

يوضح كيفية تنفيذ التقييم المخصص لحقول IF وCOMPARE.

public void ConditionEvaluationExtensionPoint(string fieldCode, sbyte comparisonResult, string comparisonError,
    string expectedResult)
{
    const string left = "\"left expression\"";
    const string @operator = "<>";
    const string right = "\"right expression\"";

    DocumentBuilder builder = new DocumentBuilder();

    // رموز الحقول التي نستخدمها في هذا المثال:
    // 1. " IF {0} {1} {2} \"الوسيطة الحقيقية\" \"الوسيطة الخاطئة\" ".
    // 2. " قارن {0} {1} {2}".
    Field field = builder.InsertField(string.Format(fieldCode, left, @operator, right), null);

    // إذا كانت "comparisonResult" غير محددة، فإننا ننشئ "ComparisonEvaluationResult" بسلسلة بدلاً من bool.
    ComparisonEvaluationResult result = comparisonResult != -1
        ? new ComparisonEvaluationResult(comparisonResult == 1)
        : comparisonError != null ? new ComparisonEvaluationResult(comparisonError) : null;

    ComparisonExpressionEvaluator evaluator = new ComparisonExpressionEvaluator(result);
    builder.Document.FieldOptions.ComparisonExpressionEvaluator = evaluator;

    builder.Document.UpdateFields();

    Assert.AreEqual(expectedResult, field.Result);
    evaluator.AssertInvocationsCount(1).AssertInvocationArguments(0, left, @operator, right);
}

/// <summary>
/// تقييم تعبيرات المقارنة لـ FieldIf و FieldCompare.
/// </summary>
private class ComparisonExpressionEvaluator : IComparisonExpressionEvaluator
{
    public ComparisonExpressionEvaluator(ComparisonEvaluationResult result)
    {
        mResult = result;
    }

    public ComparisonEvaluationResult Evaluate(Field field, ComparisonExpression expression)
    {
        mInvocations.Add(new[]
        {
            expression.LeftExpression,
            expression.ComparisonOperator,
            expression.RightExpression
        });

        return mResult;
    }

    public ComparisonExpressionEvaluator AssertInvocationsCount(int expected)
    {
        Assert.AreEqual(expected, mInvocations.Count);
        return this;
    }

    public ComparisonExpressionEvaluator AssertInvocationArguments(
        int invocationIndex,
        string expectedLeftExpression,
        string expectedComparisonOperator,
        string expectedRightExpression)
    {
        string[] arguments = mInvocations[invocationIndex];

        Assert.AreEqual(expectedLeftExpression, arguments[0]);
        Assert.AreEqual(expectedComparisonOperator, arguments[1]);
        Assert.AreEqual(expectedRightExpression, arguments[2]);

        return this;
    }

    private readonly ComparisonEvaluationResult mResult;
    private readonly List<string[]> mInvocations = new List<string[]>();
}

أنظر أيضا

ComparisonEvaluationResult(string)

إنشاء نتيجة تقييم مقارنة فاشلة مع رسالة الخطأ المقابلة.

public ComparisonEvaluationResult(string errorMessage)

أمثلة

يوضح كيفية تنفيذ التقييم المخصص لحقول IF وCOMPARE.

public void ConditionEvaluationExtensionPoint(string fieldCode, sbyte comparisonResult, string comparisonError,
    string expectedResult)
{
    const string left = "\"left expression\"";
    const string @operator = "<>";
    const string right = "\"right expression\"";

    DocumentBuilder builder = new DocumentBuilder();

    // رموز الحقول التي نستخدمها في هذا المثال:
    // 1. " IF {0} {1} {2} \"الوسيطة الحقيقية\" \"الوسيطة الخاطئة\" ".
    // 2. " قارن {0} {1} {2}".
    Field field = builder.InsertField(string.Format(fieldCode, left, @operator, right), null);

    // إذا كانت "comparisonResult" غير محددة، فإننا ننشئ "ComparisonEvaluationResult" بسلسلة بدلاً من bool.
    ComparisonEvaluationResult result = comparisonResult != -1
        ? new ComparisonEvaluationResult(comparisonResult == 1)
        : comparisonError != null ? new ComparisonEvaluationResult(comparisonError) : null;

    ComparisonExpressionEvaluator evaluator = new ComparisonExpressionEvaluator(result);
    builder.Document.FieldOptions.ComparisonExpressionEvaluator = evaluator;

    builder.Document.UpdateFields();

    Assert.AreEqual(expectedResult, field.Result);
    evaluator.AssertInvocationsCount(1).AssertInvocationArguments(0, left, @operator, right);
}

/// <summary>
/// تقييم تعبيرات المقارنة لـ FieldIf و FieldCompare.
/// </summary>
private class ComparisonExpressionEvaluator : IComparisonExpressionEvaluator
{
    public ComparisonExpressionEvaluator(ComparisonEvaluationResult result)
    {
        mResult = result;
    }

    public ComparisonEvaluationResult Evaluate(Field field, ComparisonExpression expression)
    {
        mInvocations.Add(new[]
        {
            expression.LeftExpression,
            expression.ComparisonOperator,
            expression.RightExpression
        });

        return mResult;
    }

    public ComparisonExpressionEvaluator AssertInvocationsCount(int expected)
    {
        Assert.AreEqual(expected, mInvocations.Count);
        return this;
    }

    public ComparisonExpressionEvaluator AssertInvocationArguments(
        int invocationIndex,
        string expectedLeftExpression,
        string expectedComparisonOperator,
        string expectedRightExpression)
    {
        string[] arguments = mInvocations[invocationIndex];

        Assert.AreEqual(expectedLeftExpression, arguments[0]);
        Assert.AreEqual(expectedComparisonOperator, arguments[1]);
        Assert.AreEqual(expectedRightExpression, arguments[2]);

        return this;
    }

    private readonly ComparisonEvaluationResult mResult;
    private readonly List<string[]> mInvocations = new List<string[]>();
}

أنظر أيضا

ComparisonEvaluationResult.ErrorMessage