non-collection properties (string, decimal, etc) are created on solr as collection typeswith Attribute mapping

Hi, i’m having some problems with Attribute Mapping.

My scenario is:

• Solr 5.2.1 hosted on ubuntu machine
• Project ASP.NET MVC

Following the documentation example, i created the model and insert test data.

public Product()
{
    Id = Guid.NewGuid().ToString();
    Manufacturer = "Sample Manufacturer";
    Categories = new List<string> { "Category 1", "Category 2", "Category 3" };
    Price = 100;
    InStock = true;
    Timestamp = DateTime.Now;
    Weight = null;
}

and the document are created as:

"docs": [{
    "id": "05e77caa-5d54-4f8f-b3c5-5eac14579f4e",
    "manu_exact": [
        "Sample Manufacturer"
    ],
    "cat": [
        "Category 1",
        "Category 2",
        "Category 3"
    ],
    "price": [
        100
    ],
    "inStock": [
        true
    ],
    "timestamp": [
        "2016-01-07T23:54:53.99Z"
    ],
    "_version_": 1522761031815790600
}]

That causing problems when retrieve the data.

Object of type 'System.Collections.ArrayList' cannot be converted to type 'System.String'.

Can anyone help?

[mausch]

There’s a sample app in this repo: https://github.com/mausch/SolrNet/tree/master/SampleSolrApp And here’s the schema.xml it uses: https://github.com/mausch/SolrNet/blob/master/solr/solr/conf/schema.xml

[ledangtuanbk]

I meet the same problem, but I can’t resolve it.

I use Win 10.

My Command to create solr like that :

solr create -c test_query -n basic_configs

public class TestEntity
    {
        // Id duy nhat
        [SolrUniqueKey("id")]
        public string Id { get; set; }

        // Ten benh nhan
        // patient name
        [XmlElement(ElementName = "cdyt_time")]
        [DataMember(Name = "cdyt_time", IsRequired = true)]
        [SolrField("cdyt_time")]
        public long Time { get; set; }

        // patient name
        [XmlElement(ElementName = "cdyt_patient_name")]
        [DataMember(Name = "cdyt_patient_name", IsRequired = true)]
        [SolrField("cdyt_patient_name")]
        public string PatientName { get; set; }


        public TestEntity(string id, long time, string patientName)
        {                      
            this.Id = id;
            this.Time = time;
            this.PatientName = patientName;
        }

        public TestEntity()
        {
            var mgr = new MappingManager();
            var property = typeof(TestEntity).GetProperty("Id");
            mgr.Add(property, "id");
            mgr.SetUniqueKey(property);
            
        }
    }