XmlSchemaAttribute.cs

using System.ComponentModel;
using System.Xml.Serialization;

namespace System.Xml.Schema
{
    public class XmlSchemaAttribute : XmlSchemaAnnotated
    {
        private string defaultValue;

        private string fixedValue;

        private string name;

        private XmlSchemaForm form;

        private XmlSchemaUse use;

        private XmlQualifiedName refName = XmlQualifiedName.Empty;

        private XmlQualifiedName typeName = XmlQualifiedName.Empty;

        private XmlQualifiedName qualifiedName = XmlQualifiedName.Empty;

        private XmlSchemaSimpleType type;

        private XmlSchemaSimpleType attributeType;

        private SchemaAttDef attDef;

        [XmlAttribute("default")]
        [DefaultValue(null)]
        public string DefaultValue
        {
            get
            {
                return defaultValue;
            }
            set
            {
                defaultValue = value;
            }
        }

        [XmlAttribute("fixed")]
        [DefaultValue(null)]
        public string FixedValue
        {
            get
            {
                return fixedValue;
            }
            set
            {
                fixedValue = value;
            }
        }

        [XmlAttribute("form")]
        [DefaultValue(XmlSchemaForm.None)]
        public XmlSchemaForm Form
        {
            get
            {
                return form;
            }
            set
            {
                form = value;
            }
        }

        [XmlAttribute("name")]
        public string Name
        {
            get
            {
                return name;
            }
            set
            {
                name = value;
            }
        }

        [XmlAttribute("ref")]
        public XmlQualifiedName RefName
        {
            get
            {
                return refName;
            }
            set
            {
                refName = ((value == null) ? XmlQualifiedName.Empty : value);
            }
        }

        [XmlAttribute("type")]
        public XmlQualifiedName SchemaTypeName
        {
            get
            {
                return typeName;
            }
            set
            {
                typeName = ((value == null) ? XmlQualifiedName.Empty : value);
            }
        }

        [XmlElement("simpleType")]
        public XmlSchemaSimpleType SchemaType
        {
            get
            {
                return type;
            }
            set
            {
                type = value;
            }
        }

        [XmlAttribute("use")]
        [DefaultValue(XmlSchemaUse.None)]
        public XmlSchemaUse Use
        {
            get
            {
                return use;
            }
            set
            {
                use = value;
            }
        }

        [XmlIgnore]
        public XmlQualifiedName QualifiedName
        {
            get
            {
                return qualifiedName;
            }
        }

        [XmlIgnore]
        [Obsolete("This property has been deprecated. Please use AttributeSchemaType property that returns a strongly typed attribute type. http://go.microsoft.com/fwlink/?linkid=14202")]
        public object AttributeType
        {
            get
            {
                if (attributeType == null)
                {
                    return null;
                }
                if (attributeType.QualifiedName.Namespace == "http://www.w3.org/2001/XMLSchema")
                {
                    return attributeType.Datatype;
                }
                return attributeType;
            }
        }

        [XmlIgnore]
        public XmlSchemaSimpleType AttributeSchemaType
        {
            get
            {
                return attributeType;
            }
        }

        [XmlIgnore]
        internal XmlSchemaDatatype Datatype
        {
            get
            {
                if (attributeType != null)
                {
                    return attributeType.Datatype;
                }
                return null;
            }
        }

        internal SchemaAttDef AttDef
        {
            get
            {
                return attDef;
            }
            set
            {
                attDef = value;
            }
        }

        internal bool HasDefault => defaultValue != null;

        [XmlIgnore]
        internal override string NameAttribute
        {
            get
            {
                return Name;
            }
            set
            {
                Name = value;
            }
        }

        internal XmlReader Validate(XmlReader reader, XmlResolver resolver, XmlSchemaSet schemaSet, ValidationEventHandler valEventHandler)
        {
            if (schemaSet != null)
            {
                XmlReaderSettings xmlReaderSettings = new XmlReaderSettings();
                xmlReaderSettings.ValidationType = ValidationType.Schema;
                xmlReaderSettings.Schemas = schemaSet;
                xmlReaderSettings.ValidationEventHandler += valEventHandler;
                return new XsdValidatingReader(reader, resolver, xmlReaderSettings, this);
            }
            return null;
        }

        internal void SetQualifiedName(XmlQualifiedName value)
        {
            qualifiedName = value;
        }

        internal void SetAttributeType(XmlSchemaSimpleType value)
        {
            attributeType = value;
        }

        internal override XmlSchemaObject Clone()
        {
            XmlSchemaAttribute xmlSchemaAttribute = (XmlSchemaAttribute)MemberwiseClone();
            xmlSchemaAttribute.refName = refName.Clone();
            xmlSchemaAttribute.typeName = typeName.Clone();
            xmlSchemaAttribute.qualifiedName = qualifiedName.Clone();
            return xmlSchemaAttribute;
        }
    }
}