C# QueryTranslator.IsName方法代码示例

		public void Token(string token, QueryTranslator q)
		{
			if (q.IsName(StringHelper.Root(token)))
			{
				ParserHelper.Parse(pathExpressionParser, q.Unalias(token), ParserHelper.PathSeparators, q);
				q.AppendGroupByToken(pathExpressionParser.WhereColumn);
				pathExpressionParser.AddAssociation(q);
			}
			else
			{
				q.AppendGroupByToken(token);
			}
		}

		public void Token(string token, QueryTranslator q)
		{
			if (q.IsName(StringHelper.Root(token)))
			{
				ParserHelper.Parse(pathExpressionParser, q.Unalias(token), ParserHelper.PathSeparators, q);
				q.AppendGroupByToken(pathExpressionParser.WhereColumn);
				pathExpressionParser.AddAssociation(q);
			}
			else if (token.StartsWith(ParserHelper.HqlVariablePrefix))
			{
				q.AddNamedParameter(token.Substring(1));
				q.AppendGroupByParameter();
			}
			else
			{
				q.AppendGroupByToken(token);
			}
		}

		public void Token(string token, QueryTranslator q)
		{
			if (token != null)
			{
				path.Append(token);
			}

			string alias = q.GetPathAlias(path.ToString());
			if (alias != null)
			{
				Reset(q); //reset the dotcount (but not the path)
				currentName = alias; //after reset!
				currentPropertyMapping = q.GetPropertyMapping(currentName);
				if (!ignoreInitialJoin)
				{
					JoinSequence ojf = q.GetPathJoin(path.ToString());
					try
					{
						joinSequence.AddCondition(ojf.ToJoinFragment(q.EnabledFilters, true).ToWhereFragmentString); //after reset!
					}
					catch (MappingException me)
					{
						throw new QueryException(me);
					}
					// we don't need to worry about any condition in the ON clause
					// here (toFromFragmentString), since anything in the ON condition 
					// is already applied to the whole query
				}
			}
			else if (".".Equals(token))
			{
				dotcount++;
			}
			else
			{
				if (dotcount == 0)
				{
					if (!continuation)
					{
						if (!q.IsName(token))
						{
							throw new QueryException("undefined alias or unknown mapping: " + token);
						}
						currentName = token;
						currentPropertyMapping = q.GetPropertyMapping(currentName);
					}
				}
				else if (dotcount == 1)
				{
					if (currentName != null)
					{
						currentProperty = token;
					}
					else if (collectionName != null)
					{
						//IQueryableCollection p = q.GetCollectionPersister( collectionRole );
						//DoCollectionProperty( token, p, collectionName );
						continuation = false;
					}
					else
					{
						throw new QueryException("unexpected");
					}
				}
				else
				{
					// dotcount>=2

					// Do the corresponding RHS
					IType propertyType = PropertyType;

					if (propertyType == null)
					{
						throw new QueryException("unresolved property: " + currentProperty);
					}

					if (propertyType.IsComponentType)
					{
						DereferenceComponent(token);
					}
					else if (propertyType.IsEntityType)
					{
						DereferenceEntity(token, (EntityType) propertyType, q);
					}
					else if (propertyType.IsCollectionType)
					{
						DereferenceCollection(token, ((CollectionType) propertyType).Role, q);
					}
					else if (token != null)
					{
						throw new QueryException("dereferenced: " + currentProperty);
					}
				}
			}
		}

		private void DoToken(string token, QueryTranslator q)
		{
			SessionFactoryHelper helper = new SessionFactoryHelper(q.Factory);
			if (q.IsName(StringHelper.Root(token))) //path expression
			{
				DoPathExpression(q.Unalias(token), q);
			}
			else if (token.StartsWith(ParserHelper.HqlVariablePrefix)) //named query parameter
			{
				var name = token.Substring(1);
				// this is only a temporary parameter to help with the parsing of hql - 
				// when the type becomes known then this will be converted to its real
				// parameter type.
				AppendToken(q, q.GetNamedParameter(name));
			}
			else if (token.Equals(StringHelper.SqlParameter))
			{
				//if the token is a "?" then we have a Parameter so convert it to a SqlCommand.Parameter
				// instead of appending a "?" to the WhereTokens
				AppendToken(q, q.GetPositionalParameter());
			}
			else
			{
				IQueryable persister = q.GetPersisterUsingImports(token);
				if (persister != null) // the name of a class
				{
					string discrim = persister.DiscriminatorSQLValue;
					if (InFragment.Null == discrim || InFragment.NotNull == discrim)
					{
						throw new QueryException("subclass test not allowed for null or not null discriminator");
					}
					AppendToken(q, discrim);
				}
				else
				{
					object constant;
					string fieldName = null;
					System.Type importedType = null;

					int indexOfDot = token.IndexOf(StringHelper.Dot);
					// don't even bother to do the lookups if the indexOfDot is not 
					// greater than -1.  This will save all the string modifications.

					// This allows us to resolve to the full type before obtaining the value e.g. FooStatus.OFF -> NHibernate.Model.FooStatus.OFF
					if (indexOfDot > -1)
					{
						fieldName = StringHelper.Unqualify(token);
						string typeName = StringHelper.Qualifier(token);
						importedType = helper.GetImportedClass(typeName);
					}

					if (indexOfDot > -1 && importedType != null &&
							(constant = ReflectHelper.GetConstantValue(importedType, fieldName)) != null)
					{
						// need to get the NHibernate Type so we can convert the Enum or field from 
						// a class into it's string representation for hql.
						IType type;
						try
						{
							type = TypeFactory.HeuristicType(constant.GetType().AssemblyQualifiedName);
						}
						catch (MappingException me)
						{
							throw new QueryException(me);
						}

						if (type == null)
						{
							throw new QueryException(string.Format("Could not determin the type of: {0}", token));
						}

						try
						{
							AppendToken(q, ((ILiteralType)type).ObjectToSQLString(constant, q.Factory.Dialect));
						}
						catch (Exception e)
						{
							throw new QueryException("Could not format constant value to SQL literal: " + token, e);
						}
					}
					else
					{
						//anything else
						string negatedToken = null;
						if (negated)
							negations.TryGetValue(token.ToLowerInvariant(), out negatedToken);
						if (negatedToken != null && (!betweenSpecialCase || !"or".Equals(negatedToken)))
						{
							AppendToken(q, negatedToken);
						}
						else
						{
							AppendToken(q, token);
						}
					}
				}
			}
		}