public async Task ShouldThrowExceptionIfNullResult()
{
IStatementResultCursor result = null;
var exception = await Record.ExceptionAsync(() => result.ToListAsync());
exception.Should().BeOfType <ArgumentNullException>();
}
public async Task <int> AddEmployeesAsync(string companyName)
{
var session = Driver.Session();
try
{
var persons = await session.ReadTransactionAsync(async tx =>
{
IStatementResultCursor result = await tx.RunAsync("MATCH (a:Person) RETURN a.name AS name");
return(await result.ToListAsync());
});
return(persons.Sum(person => session.WriteTransactionAsync(async tx =>
{
await tx.RunAsync("MATCH (emp:Person {name: $person_name}) " +
"MERGE (com:Company {name: $company_name}) " +
"MERGE (emp)-[:WORKS_FOR]->(com)",
new { person_name = person["name"].As <string>(), company_name = companyName });
return 1;
}).Result));
}
finally
{
await session.CloseAsync();
}
}
public async Task <string> Read()
{
string result = string.Empty;
using (ISession session = GlobalDatabaseContext.Driver.Session())
{
string query = "match (user:User {name:\"User\"}) return user.name as Name";
await session.ReadTransactionAsync(async x =>
{
IStatementResultCursor cursor = await x.RunAsync(query);
var tmp = await cursor.ToListAsync(c => {
return(c.To <string>("Name"));
});
result = tmp.FirstOrDefault();
query = string.Empty;
});
return(result);
}
}
