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OverridableAutoMappingProfile.cs
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OverridableAutoMappingProfile.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using MongoDB.Configuration.CollectionAdapters;
using MongoDB.Configuration.DictionaryAdapters;
using MongoDB.Configuration.IdGenerators;
namespace MongoDB.Configuration.Mapping.Auto
{
/// <summary>
/// </summary>
public class OverridableAutoMappingProfile : IAutoMappingProfile
{
private readonly ClassOverridesMap _overrides;
private readonly IAutoMappingProfile _profile;
/// <summary>
/// Initializes a new instance of the <see cref = "AutoMappingProfile" /> class.
/// </summary>
/// <param name = "profile">The profile.</param>
/// <param name = "overrides">The overrides.</param>
public OverridableAutoMappingProfile(IAutoMappingProfile profile, ClassOverridesMap overrides)
{
if(overrides == null)
throw new ArgumentNullException("overrides");
if(profile == null)
throw new ArgumentNullException("profile");
_overrides = overrides;
_profile = profile;
}
/// <summary>
/// Finds the extended properties member.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <returns></returns>
public MemberInfo FindExtendedPropertiesMember(Type classType)
{
return _profile.FindExtendedPropertiesMember(classType);
}
/// <summary>
/// Gets the id member for the class type.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <returns></returns>
public MemberInfo FindIdMember(Type classType)
{
return GetIdOverrideValue(
classType,
o => o.Member,
m => m != null,
_profile.FindIdMember(classType));
}
/// <summary>
/// Finds the members to map for the class type.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <returns></returns>
public IEnumerable<MemberInfo> FindMembers(Type classType)
{
return _profile.FindMembers(classType)
.Where(member => (bool)GetMemberOverrideValue(classType, member, o => !o.Ignore, v => v.HasValue, true));
}
/// <summary>
/// Gets the property name for the member.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <param name = "member">The member.</param>
/// <returns></returns>
public string GetAlias(Type classType, MemberInfo member)
{
var alias = _profile.GetAlias(classType, member);
return GetMemberOverrideValue(classType,
member,
o => o.Alias,
s => !string.IsNullOrEmpty(s),
alias);
}
/// <summary>
/// Gets the collection name for the class type.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <returns></returns>
public string GetCollectionName(Type classType)
{
return GetClassOverrideValue(classType,
o => o.CollectionName,
s => !string.IsNullOrEmpty(s),
_profile.GetCollectionName(classType));
}
/// <summary>
/// Gets the type of the collection.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <param name = "member">The member.</param>
/// <param name = "memberReturnType">Type of the member return.</param>
/// <returns></returns>
public ICollectionAdapter GetCollectionAdapter(Type classType, MemberInfo member, Type memberReturnType)
{
return _profile.GetCollectionAdapter(classType, member, memberReturnType);
}
/// <summary>
/// Gets the type of the collection element.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <param name = "member">The member.</param>
/// <param name = "memberReturnType">Type of the member return.</param>
/// <returns></returns>
public Type GetCollectionElementType(Type classType, MemberInfo member, Type memberReturnType)
{
return _profile.GetCollectionElementType(classType, member, memberReturnType);
}
/// <summary>
/// Gets the default value.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <param name = "member">The member.</param>
/// <returns></returns>
public object GetDefaultValue(Type classType, MemberInfo member)
{
var defaultValue = _profile.GetDefaultValue(classType, member);
return GetMemberOverrideValue(classType,
member,
o => o.DefaultValue,
v => v != null,
defaultValue);
}
/// <summary>
/// Gets the dictionary adadpter.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <param name = "member">The member.</param>
/// <param name = "memberReturnType">Type of the member return.</param>
/// <returns></returns>
public IDictionaryAdapter GetDictionaryAdapter(Type classType, MemberInfo member, Type memberReturnType)
{
return _profile.GetDictionaryAdapter(classType, member, memberReturnType);
}
/// <summary>
/// Gets the descriminator for the class type.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <returns></returns>
public object GetDiscriminator(Type classType)
{
return _profile.GetDiscriminator(classType);
}
/// <summary>
/// Gets the property name of the discriminator for the class type.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <returns></returns>
public string GetDiscriminatorAlias(Type classType)
{
return _profile.GetDiscriminatorAlias(classType);
}
/// <summary>
/// Gets the id generator for the member.
/// </summary>
/// <param name = "classType"></param>
/// <param name = "member">The member.</param>
/// <returns></returns>
public IIdGenerator GetIdGenerator(Type classType, MemberInfo member)
{
return GetIdOverrideValue(
classType,
o => o.Generator,
g => g != null,
_profile.GetIdGenerator(classType, member));
}
/// <summary>
/// Gets the unsaved value for the id.
/// </summary>
/// <param name = "classType">Type of the entity.</param>
/// <param name = "member">The member.</param>
/// <returns></returns>
public object GetIdUnsavedValue(Type classType, MemberInfo member)
{
return GetIdOverrideValue(
classType,
o => o.UnsavedValue,
v => v != null,
_profile.GetIdUnsavedValue(classType, member));
}
/// <summary>
/// Gets a value indicating whether the member should be persisted if it is null.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <param name = "member">The member.</param>
/// <returns></returns>
public bool GetPersistNull(Type classType, MemberInfo member)
{
return (bool)GetMemberOverrideValue(classType,
member,
o => o.PersistIfNull,
v => v.HasValue,
_profile.GetPersistNull(classType, member));
}
/// <summary>
/// Indicates whether the class type is a sub class.
/// </summary>
/// <param name = "classType">Type of the class.</param>
/// <returns>
/// <c>true</c> if the classType is a sub class; otherwise, <c>false</c>.
/// </returns>
public bool IsSubClass(Type classType)
{
return _profile.IsSubClass(classType);
}
/// <summary>
/// Gets the class override value.
/// </summary>
/// <typeparam name = "T"></typeparam>
/// <param name = "classType">Type of the class.</param>
/// <param name = "overrides">The overrides.</param>
/// <param name = "accept">The accept.</param>
/// <param name = "defaultValue">The default value.</param>
/// <returns></returns>
private T GetClassOverrideValue<T>(Type classType, Func<ClassOverrides, T> overrides, Func<T, bool> accept, T defaultValue)
{
if(!_overrides.HasOverridesForType(classType))
return defaultValue;
var value = overrides(_overrides.GetOverridesForType(classType));
return !accept(value) ? defaultValue : value;
}
private T GetIdOverrideValue<T>(Type classType,
Func<IdOverrides, T> overrides,
Func<T, bool> accept,
T defaultValue)
{
if (!_overrides.HasOverridesForType(classType))
return defaultValue;
var idOverrides = _overrides.GetOverridesForType(classType).GetIdOverrides();
if (idOverrides == null)
return defaultValue;
var value = overrides(idOverrides);
return !accept(value) ? defaultValue : value;
}
private T GetMemberOverrideValue<T>(Type classType,
MemberInfo member,
Func<MemberOverrides, T> overrides,
Func<T, bool> accept,
T defaultValue)
{
if(!_overrides.HasOverridesForType(classType))
return defaultValue;
var value = overrides(_overrides.GetOverridesForType(classType).GetOverridesFor(member));
return !accept(value) ? defaultValue : value;
}
}
}