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#region Apache Notice
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#endregion
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#region Using
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using System;
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using System.Collections.Specialized;
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#endregion
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namespace IBatisNet.DataMapper.TypeHandlers
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{
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internal class TypeHandlerFactory
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{
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#region Fields
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private HybridDictionary _typeHandlerMap = new HybridDictionary();
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private ITypeHandler _unknownTypeHandler = null;
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private const string NULL = "_NULL_TYPE_";
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#endregion
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#region Constructor
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public TypeHandlerFactory()
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{
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ITypeHandler handler = null;
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handler = new BooleanTypeHandler();
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this.Register(typeof(bool), handler);
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handler = new ByteTypeHandler();
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this.Register(typeof(Byte), handler);
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handler = new CharTypeHandler();
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this.Register(typeof(Char), handler);
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handler = new DateTimeTypeHandler();
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this.Register(typeof(DateTime), handler);
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handler = new DecimalTypeHandler();
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this.Register(typeof(Decimal), handler);
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handler = new DoubleTypeHandler();
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this.Register(typeof(Double), handler);
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handler = new Int16TypeHandler();
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this.Register(typeof(Int16), handler);
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handler = new Int32TypeHandler();
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this.Register(typeof(Int32), handler);
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handler = new Int64TypeHandler();
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this.Register(typeof(Int64), handler);
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handler = new SingleTypeHandler();
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this.Register(typeof(Single), handler);
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handler = new StringTypeHandler();
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this.Register(typeof(String), handler);
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handler = new GuidTypeHandler();
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this.Register(typeof(Guid), handler);
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handler = new TimeSpanTypeHandler();
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this.Register(typeof(TimeSpan), handler);
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handler = new ByteArrayTypeHandler();
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this.Register(typeof(Byte[]), handler);
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handler = new ObjectTypeHandler();
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this.Register(typeof(object), handler);
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handler = new EnumTypeHandler();
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this.Register( typeof(System.Enum), handler);
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_unknownTypeHandler = new UnknownTypeHandler(this);
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}
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#endregion
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#region Methods
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public ITypeHandler GetTypeHandler(Type type)
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{
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return GetTypeHandler(type, null);
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}
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public ITypeHandler GetTypeHandler(Type type, string dbType)
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{
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if (type.IsEnum)
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{
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return this.GetPrivateTypeHandler(typeof(System.Enum), dbType);
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}
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else
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{
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return this.GetPrivateTypeHandler(type, dbType);
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}
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}
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private ITypeHandler GetPrivateTypeHandler(Type type, string dbType)
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{
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HybridDictionary dbTypeHandlerMap = (HybridDictionary) _typeHandlerMap[ type ];
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ITypeHandler handler = null;
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if (dbTypeHandlerMap != null)
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{
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if (dbType==null)
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{
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handler = (ITypeHandler) dbTypeHandlerMap[ NULL ];
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}
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else
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{
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handler = (ITypeHandler) dbTypeHandlerMap[ dbType ];
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if (handler == null)
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{
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handler = (ITypeHandler) dbTypeHandlerMap[ NULL ];
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}
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}
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}
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return handler;
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}
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public void Register(Type type, ITypeHandler handler)
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{
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this.Register(type, null, handler);
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}
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public void Register(Type type, string dbType, ITypeHandler handler)
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{
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HybridDictionary map = (HybridDictionary) _typeHandlerMap[ type ];
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if (map == null)
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{
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map = new HybridDictionary();
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_typeHandlerMap.Add(type, map) ;
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}
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if (dbType==null)
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{
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map.Add(NULL, handler);
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}
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else
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{
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map.Add(dbType, handler);
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}
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}
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public ITypeHandler GetUnkownTypeHandler()
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{
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return _unknownTypeHandler;
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}
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public bool IsSimpleType(Type type)
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{
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bool result = false;
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if (type != null)
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{
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ITypeHandler handler = this.GetTypeHandler(type, null);
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if (handler != null)
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{
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result = handler.IsSimpleType;
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}
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}
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return result;
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}
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#endregion
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}
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}
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