/// <inheritdoc/>
public async Task <TModel> SingleOrDefaultAsync(object[] keyValues, CancellationToken ct)
{
var findExpression = EntityFrameworkHelper.FindExpression <TEntity>(keyValues);
var item = await this.OnBaseEntityFindQuery(ct)
.SingleOrDefaultAsync(findExpression, ct)
.ConfigureAwait(false);
return(this.OnConvert(item));
}
public void FindExpression_2()
{
var record = new DoubleKey {
StudentKey = 1, AdmissionNum = "123"
};
var exp1 = EntityFrameworkHelper.FindExpression <DoubleKey>(new object[] { 1, "123" }).Compile();
var exp2 = EntityFrameworkHelper.FindExpression <DoubleKey>(new object[] { 2, string.Empty }).Compile();
Assert.IsTrue(exp1(record));
Assert.IsFalse(exp2(record));
}
public void FindExpression_1()
{
var record = new SingleKey {
StudentKey = 1
};
var exp1 = EntityFrameworkHelper.FindExpression <SingleKey>(1).Compile();
var exp2 = EntityFrameworkHelper.FindExpression <SingleKey>(2).Compile();
Assert.IsTrue(exp1(record));
Assert.IsFalse(exp2(record));
}
public void FindExpression_3()
{
var g = Guid.NewGuid();
var record = new TripleKey {
StudentKey = 33, AdmissionNum = "1123223", Guid = g
};
var exp1 = EntityFrameworkHelper.FindExpression <TripleKey>(new object[] { 33, "1123223", g }).Compile();
var exp2 = EntityFrameworkHelper.FindExpression <TripleKey>(new object[] { 33, "1123223", Guid.NewGuid() }).Compile();
Assert.IsTrue(exp1(record));
Assert.IsFalse(exp2(record));
}