C# IQuery.Descend方法代码示例

 public void Constrain(IQuery query)
 {
     var icon1 = query.Descend(FieldA).Constrain(10);
     var icon2 = query.Descend(FieldB).Constrain(10);
     icon1.Or(icon2);
 }

			public void Constrain(IQuery query)
			{
				query.Descend(InterfaceQueryTestCase.FieldA).Constrain(10).Not();
			}

		private IxFreespaceMigrationTestCase.Item QueryForItem(IQuery q, int n)
		{
			q.Constrain(typeof(IxFreespaceMigrationTestCase.Item));
			q.Descend("_name").Constrain("item" + n);
			return (IxFreespaceMigrationTestCase.Item)q.Execute().Next();
		}

 private IConstraint AddFieldConstraint(IQuery query, PersistentEntryTemplate template
     , int index)
 {
     return query.Descend(template.fieldNames[index]).Constrain(template.fieldValues[index
         ]);
 }

		/// <summary>
		/// adds a constraint to the passed Query to query only for objects that were
		/// modified since the last replication process between this and the other
		/// ObjectContainer involved in the current replication process.
		/// </summary>
		/// <remarks>
		/// adds a constraint to the passed Query to query only for objects that were
		/// modified since the last replication process between this and the other
		/// ObjectContainer involved in the current replication process.
		/// </remarks>
		/// <param name="query">the Query to be constrained</param>
		public virtual void WhereModified(IQuery query)
		{
			query.Descend(VirtualField.CommitTimestamp).Constrain(GetLastReplicationVersion()
				).Greater();
		}

		/// <summary>
		/// adds a constraint to the passed Query to query only for objects that were
		/// modified since the last replication process between this and the other
		/// ObjectContainer involved in the current replication process.
		/// </summary>
		/// <remarks>
		/// adds a constraint to the passed Query to query only for objects that were
		/// modified since the last replication process between this and the other
		/// ObjectContainer involved in the current replication process.
		/// </remarks>
		/// <param name="query">the Query to be constrained</param>
		public virtual void WhereModified(IQuery query)
		{
			IQuery qTimestamp = query.Descend(VirtualField.CommitTimestamp);
			IConstraint constraint = qTimestamp.Constrain(GetLastReplicationVersion()).Greater
				();
			long[] concurrentTimestamps = _replicationRecord._concurrentTimestamps;
			if (concurrentTimestamps != null)
			{
				for (int i = 0; i < concurrentTimestamps.Length; i++)
				{
					constraint = constraint.Or(qTimestamp.Constrain(concurrentTimestamps[i]));
				}
			}
		}

 private Item QueryForItem(IQuery q, int n)
 {
     q.Constrain(typeof (Item));
     q.Descend("_name").Constrain("item" + n);
     return (Item) q.Execute().Next();
 }