#region Disclaimer / License // Copyright (C) 2010, Jackie Ng // http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2.1 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA // #endregion using System; using System.Collections.Generic; using System.Text; using OSGeo.MapGuide.MaestroAPI.Schema; using GeoAPI.Geometries; namespace OSGeo.MapGuide.MaestroAPI.Feature { /// <summary> /// Base class of all MapGuide property values. Functions as a nullable box type /// around an underlying data type /// </summary> public abstract class PropertyValue { /// <summary> /// Initializes a new instance of the <see cref="PropertyValue"/> class. /// </summary> protected PropertyValue() { this.IsNull = true; } /// <summary> /// Gets or sets a value indicating whether this instance is null. /// </summary> /// <value> /// <c>true</c> if this instance is null; otherwise, <c>false</c>. /// </value> public virtual bool IsNull { get; protected set; } /// <summary> /// Sets the value to null. /// </summary> public virtual void SetNull() { this.IsNull = true; } /// <summary> /// Gets the type. /// </summary> public abstract PropertyValueType Type { get; } } /// <summary> /// Base class of all nullable value type property values. /// </summary> /// <typeparam name="T"></typeparam> public abstract class ValueTypePropertyValue<T> : PropertyValue where T : struct { /// <summary> /// Initializes a new instance of the <see cref="ValueTypePropertyValue<T>"/> class. /// </summary> protected ValueTypePropertyValue() : base() { } /// <summary> /// Initializes a new instance of the <see cref="ValueTypePropertyValue<T>"/> class. /// </summary> /// <param name="value">The value.</param> protected ValueTypePropertyValue(T value) : base() { _value = value; } private Nullable<T> _value; /// <summary> /// Gets or sets a value indicating whether this instance is null. /// </summary> /// <value> /// <c>true</c> if this instance is null; otherwise, <c>false</c>. /// </value> public override bool IsNull { get { return !_value.HasValue; } } /// <summary> /// Gets or sets the value. /// </summary> /// <value> /// The value. /// </value> public T Value { get { if (IsNull) throw new Exception("Null Value"); //LOCALIZEME return _value.Value; } set { _value = value; } } /// <summary> /// Sets the value to null. /// </summary> public override void SetNull() { _value = null; } } /// <summary> /// Base class of all reference type property values /// </summary> /// <typeparam name="T"></typeparam> public abstract class ReferenceTypePropertyValue<T> : PropertyValue where T : class { /// <summary> /// Initializes a new instance of the <see cref="ReferenceTypePropertyValue<T>"/> class. /// </summary> protected ReferenceTypePropertyValue() : base() { } /// <summary> /// Initializes a new instance of the <see cref="ReferenceTypePropertyValue<T>"/> class. /// </summary> /// <param name="value">The value.</param> protected ReferenceTypePropertyValue(T value) : base() { _value = value; this.IsNull = false; } private T _value; /// <summary> /// Gets or sets the value. /// </summary> /// <value> /// The value. /// </value> public T Value { get { if (IsNull) throw new Exception("Null Value"); //LOCALIZEME return _value; } set { _value = value; this.IsNull = (value == null); } } } /// <summary> /// Stores byte data /// </summary> public class ByteValue : ValueTypePropertyValue<byte> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Byte; } } } /// <summary> /// Stores boolean data /// </summary> public class BooleanValue : ValueTypePropertyValue<bool> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Boolean; } } } /// <summary> /// Stores blob data /// </summary> public class BlobValue : ReferenceTypePropertyValue<byte[]> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Blob; } } } /// <summary> /// Stores clob data /// </summary> public class ClobValue : ReferenceTypePropertyValue<char[]> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Clob; } } } /// <summary> /// Stores datetime data /// </summary> public class DateTimeValue : ValueTypePropertyValue<DateTime> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.DateTime; } } } /// <summary> /// Stores double data /// </summary> public class DoubleValue : ValueTypePropertyValue<double> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Double; } } } /// <summary> /// Stores feature data /// </summary> public class FeatureValue : ReferenceTypePropertyValue<IFeature[]> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Feature; } } } /// <summary> /// Stores geometry data /// </summary> public class GeometryValue : ReferenceTypePropertyValue<IGeometry> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Geometry; } } } /// <summary> /// Stores int16 data /// </summary> public class Int16Value : ValueTypePropertyValue<short> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Int16; } } } /// <summary> /// Stores int32 data /// </summary> public class Int32Value : ValueTypePropertyValue<int> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Int32; } } } /// <summary> /// Stores int64 data /// </summary> public class Int64Value : ValueTypePropertyValue<long> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Int64; } } } /// <summary> /// Stores raster data /// </summary> public class RasterValue : ReferenceTypePropertyValue<byte[]> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Raster; } } } /// <summary> /// Stores float data /// </summary> public class SingleValue : ValueTypePropertyValue<float> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.Single; } } } /// <summary> /// Stores string data /// </summary> public class StringValue : ReferenceTypePropertyValue<string> { /// <summary> /// Gets the type. /// </summary> public override PropertyValueType Type { get { return PropertyValueType.String; } } } }