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ConnectionSelectPersistentObjectPersistentObjectType Method (PersistentObjectFieldFilterCollection, PersistentObjectFieldSorterCollection, Int32, Int32)
Retrieves a list of the persistent objects from the data store.

Namespace: Obujekutoru
Assembly: obujekutoru (in obujekutoru.dll) Version: 1.1.0.25794
Syntax
public List<PersistentObject> SelectPersistentObject<PersistentObjectType>(
	PersistentObjectFieldFilterCollection persistentObjectFieldFilterCollection,
	PersistentObjectFieldSorterCollection persistentObjectFieldSorterCollection,
	int start,
	int range
)

Parameters

persistentObjectFieldFilterCollection
Type: ObujekutoruPersistentObjectFieldFilterCollection
The persistent object field filters to use for the search.
persistentObjectFieldSorterCollection
Type: ObujekutoruPersistentObjectFieldSorterCollection
The persistent object field sorters to use for the search.
start
Type: SystemInt32
The position of the first persistent object to retrieve (1-based index).
range
Type: SystemInt32
The range of persistent objects to retrieve.

Type Parameters

PersistentObjectType

Return Value

Type: ListPersistentObject
The list of persistent objects.
Exceptions
ExceptionCondition
ArgumentNullException The persistent object type is null, the persistent object field filters list is null, the persistent object field sorters list is null.
ArgumentOutOfRangeException The start has a non-positive value, the range has a non-positive value.
InvalidOperationExceptionThe connection has been disposed of.
Examples
using System;
using System.Collections;
using System.Collections.Generic;

using Obujekutoru;

namespace ObujekutoruExamples.ConnectionSelectExample
{
    class Program
    {
        static void Main(string[] args)
        {
            String dataFolderPath = @"C:\Temp\ObujekutoruData";
            EncryptionType encryptionType = EncryptionType.DESEncryption;
            String encryptionKey = "A proavo habui, quod publicos litterarum ludos non frequentavi, et domi bonis praeceptoribus usus...";

            using (Connection connection = new Connection(dataFolderPath, encryptionType, encryptionKey, true))
            {
                PersistentObjectE persistentObjectE1 = new PersistentObjectE("persistent object E1", 1);
                PersistentObjectE persistentObjectE2 = new PersistentObjectE("persistent object E2", 1);
                PersistentObjectE persistentObjectE3 = new PersistentObjectE("persistent object E3", 1);
                PersistentObjectE persistentObjectE4 = new PersistentObjectE("persistent object E4", 2);
                PersistentObjectE persistentObjectE5 = new PersistentObjectE("persistent object E5", 2);
                PersistentObjectE persistentObjectE6 = new PersistentObjectE("persistent object E6", 2);
                PersistentObjectE persistentObjectE7 = new PersistentObjectE("persistent object E7", 3);
                PersistentObjectE persistentObjectE8 = new PersistentObjectE("persistent object E8", 3);
                PersistentObjectE persistentObjectE9 = new PersistentObjectE("persistent object E9", 3);

                connection.InsertPersistentObject(persistentObjectE1);
                connection.InsertPersistentObject(persistentObjectE2);
                connection.InsertPersistentObject(persistentObjectE3);
                connection.InsertPersistentObject(persistentObjectE4);
                connection.InsertPersistentObject(persistentObjectE5);
                connection.InsertPersistentObject(persistentObjectE6);
                connection.InsertPersistentObject(persistentObjectE7);
                connection.InsertPersistentObject(persistentObjectE8);
                connection.InsertPersistentObject(persistentObjectE9);

                List<PersistentObject> persistentObjects = connection.SelectPersistentObject<PersistentObjectE>(
                    PersistentObjectFieldFilterCollection.Empty().And(
                        "persistentObjectValue", PersistentObjectFieldFilterOperator.Equal, 2),
                    PersistentObjectFieldSorterCollection.Empty().And(
                        "persistentObjectName", PersistentObjectFieldSortOperator.Ascending),
                    1, Int32.MaxValue);

                Console.WriteLine("persistentObjects[0] = {0}", (persistentObjects[0] as PersistentObjectE).PersistentObjectName);
                Console.WriteLine("persistentObjects[1] = {0}", (persistentObjects[1] as PersistentObjectE).PersistentObjectName);
                Console.WriteLine("persistentObjects[2] = {0}", (persistentObjects[2] as PersistentObjectE).PersistentObjectName);
            }
        }
    }

    [PersistentObject("PersistentObjectE")]
    internal class PersistentObjectE : PersistentObject
    {
        [PersistentObjectField("persistentObjectName", true)]
        private String _persistentObjectName;

        [PersistentObjectField("persistentObjectValue", true)]
        private Int32 _persistentObjectValue;

        public PersistentObjectE()
        { }
        public PersistentObjectE(String persistentObjectName, Int32 persistentObjectValue)
        {
            _persistentObjectName = persistentObjectName;
            _persistentObjectValue = persistentObjectValue;
        }

        public String PersistentObjectName
        {
            get { return _persistentObjectName; }
            set
            {
                _persistentObjectName = value;

                OnObjectUpdated();
            }
        }

        public Int32 PersistentObjectValue
        {
            get { return _persistentObjectValue; }
            set
            {
                _persistentObjectValue = value;

                OnObjectUpdated();
            }
        }
    }
}
See Also