private Tuple <PropertyMapping, PropertyMapping>[] GetRelationshipLink(
IStatementSqlBuilder sourceSqlBuilder,
PropertyMapping sourcePropMapping,
IStatementSqlBuilder destinationSqlBuilder,
PropertyMapping destinationPropMapping)
{
var sourcePropNames = sourcePropMapping.RelationshipPropertyNames;
var destinationPropNames = destinationPropMapping.RelationshipPropertyNames;
if (sourcePropNames == null)
{
throw new InvalidOperationException($"No property was found for the relationship denoted by '{sourcePropMapping.PropertyName}' on '{sourceSqlBuilder.EntityMapping.EntityType.Name}'");
}
if (destinationPropNames == null)
{
throw new InvalidOperationException($"No property was found for the relationship denoted by '{destinationPropMapping.PropertyName}' on '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
if (sourcePropNames.Length == 0 && destinationPropNames.Length == 0)
{
throw new InvalidOperationException($"No properties were found for the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
if (sourcePropNames.Length == 0)
{
if (sourceSqlBuilder.KeyProperties.Length != 1)
{
throw new InvalidOperationException($"Unable to infer the property used in the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
sourcePropNames = new[] { sourceSqlBuilder.KeyProperties[0].PropertyName };
}
if (destinationPropNames.Length == 0)
{
if (destinationSqlBuilder.KeyProperties.Length != 1)
{
throw new InvalidOperationException($"Unable to infer the property used in the relationship between '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]' and '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' ");
}
destinationPropNames = new[] { sourceSqlBuilder.KeyProperties[0].PropertyName };
}
if (sourcePropNames.Length != destinationPropNames.Length)
{
throw new InvalidOperationException("Invalid number of properties used in the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
return(Enumerable.Range(0, sourcePropNames.Length).Select(
index =>
{
PropertyMapping sourcePropertyMapping;
if (!sourceSqlBuilder.EntityMapping.PropertyMappings.TryGetValue(sourcePropNames[index], out sourcePropertyMapping))
{
throw new InvalidOperationException($"Unable to locate property '{sourcePropNames[index]}' on the entity '{sourceSqlBuilder.EntityMapping.EntityType.Name}' for the relationship with '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
PropertyMapping destinationPropertyMapping;
if (!destinationSqlBuilder.EntityMapping.PropertyMappings.TryGetValue(destinationPropNames[index], out destinationPropertyMapping))
{
throw new InvalidOperationException($"Unable to locate property '{destinationPropNames[index]}' on the entity '{destinationSqlBuilder.EntityMapping.EntityType.Name}' for the relationship with '{sourceSqlBuilder.EntityMapping.EntityType.Name}'");
}
return new Tuple <PropertyMapping, PropertyMapping>(sourcePropertyMapping, destinationPropertyMapping);
}).ToArray());
}
private void PrepareEnvironment <TEntity>(SqlDialect dialect)
{
OrmConfiguration.DefaultDialect = dialect;
// in real library usage, people will use the ISqlBuilder, but for our tests we're gonna need more than that
_currentSqlBuilder = OrmConfiguration.GetSqlBuilder <TEntity>() as IStatementSqlBuilder;
_currentDialect = dialect;
_selectColumnNames = _currentSqlBuilder.SelectProperties.Select(propInfo => propInfo.DatabaseColumnName).ToArray();
}
public EntityRelationship(IStatementSqlBuilder sourceSqlBuilder, IStatementSqlBuilder destinationSqlBuilder)
{
this.Relationship = RelationshipType.None;
var sourceRelationshipMapping = this.GetRelationshipMapping(
sourceSqlBuilder,
destinationSqlBuilder,
parentChildRelationship: false);
var destinationRelationshipMapping = this.GetRelationshipMapping(
destinationSqlBuilder,
sourceSqlBuilder,
parentChildRelationship: true);
if (sourceRelationshipMapping != null && destinationRelationshipMapping != null)
{
// found a child-parent relationship
this.Relationship = RelationshipType.ChildParent;
}
else
{
sourceRelationshipMapping = this.GetRelationshipMapping(
sourceSqlBuilder,
destinationSqlBuilder,
parentChildRelationship: true);
destinationRelationshipMapping = this.GetRelationshipMapping(
destinationSqlBuilder,
sourceSqlBuilder,
parentChildRelationship: false);
if (sourceRelationshipMapping != null && destinationRelationshipMapping != null)
{
// found a parent child relationship
this.Relationship = RelationshipType.ParentChild;
}
}
if (this.Relationship != RelationshipType.None)
{
this.OwnPropertyDescriptor = sourceRelationshipMapping.Descriptor;
this.ForeignPropertyDescriptor = destinationRelationshipMapping.Descriptor;
this.RelationshipLink = GetRelationshipLink(
sourceSqlBuilder,
sourceRelationshipMapping,
destinationSqlBuilder,
destinationRelationshipMapping);
}
}
public EntityRelationship(IStatementSqlBuilder sourceSqlBuilder, IStatementSqlBuilder destinationSqlBuilder)
{
this.Relationship = RelationshipType.None;
var sourceRelationshipMapping = this.GetRelationshipMapping(
sourceSqlBuilder,
destinationSqlBuilder,
parentChildRelationship:false);
var destinationRelationshipMapping = this.GetRelationshipMapping(
destinationSqlBuilder,
sourceSqlBuilder,
parentChildRelationship: true);
if (sourceRelationshipMapping != null && destinationRelationshipMapping != null)
{
// found a child-parent relationship
this.Relationship = RelationshipType.ChildParent;
}
else
{
sourceRelationshipMapping = this.GetRelationshipMapping(
sourceSqlBuilder,
destinationSqlBuilder,
parentChildRelationship: true);
destinationRelationshipMapping = this.GetRelationshipMapping(
destinationSqlBuilder,
sourceSqlBuilder,
parentChildRelationship: false);
if (sourceRelationshipMapping != null && destinationRelationshipMapping != null)
{
// found a parent child relationship
this.Relationship = RelationshipType.ParentChild;
}
}
if (this.Relationship != RelationshipType.None)
{
this.OwnPropertyDescriptor = sourceRelationshipMapping.Descriptor;
this.ForeignPropertyDescriptor = destinationRelationshipMapping.Descriptor;
this.RelationshipLink = GetRelationshipLink(
sourceSqlBuilder,
sourceRelationshipMapping,
destinationSqlBuilder,
destinationRelationshipMapping);
}
}
private PropertyMapping GetRelationshipMapping(
IStatementSqlBuilder sourceSqlBuilder,
IStatementSqlBuilder destinationSqlBuilder,
bool parentChildRelationship)
{
var relationshipSourcePropertyMappings = sourceSqlBuilder.ForeignEntityProperties.Where(propMapping => parentChildRelationship
?this.IsChildrenPropertyMapping(propMapping, destinationSqlBuilder.EntityMapping.EntityType)
:this.IsParentPropertyMapping(propMapping, destinationSqlBuilder.EntityMapping.EntityType)).ToArray();
if (relationshipSourcePropertyMappings.Length > 1)
{
throw new InvalidOperationException($"Entity '{sourceSqlBuilder.EntityMapping.EntityType.Name}' has more than one relationship of type {(parentChildRelationship?"parent-child":"child-parent")} with the entity '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
var relationshipSourcePropertyMapping = relationshipSourcePropertyMappings.SingleOrDefault();
return relationshipSourcePropertyMapping;
}
private PropertyMapping GetRelationshipMapping(
IStatementSqlBuilder sourceSqlBuilder,
IStatementSqlBuilder destinationSqlBuilder,
bool parentChildRelationship)
{
var relationshipSourcePropertyMappings = sourceSqlBuilder.ForeignEntityProperties.Where(propMapping => parentChildRelationship
?this.IsChildrenPropertyMapping(propMapping, destinationSqlBuilder.EntityMapping.EntityType)
:this.IsParentPropertyMapping(propMapping, destinationSqlBuilder.EntityMapping.EntityType)).ToArray();
if (relationshipSourcePropertyMappings.Length > 1)
{
throw new InvalidOperationException($"Entity '{sourceSqlBuilder.EntityMapping.EntityType.Name}' has more than one relationship of type {(parentChildRelationship?"parent-child":"child-parent")} with the entity '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
var relationshipSourcePropertyMapping = relationshipSourcePropertyMappings.SingleOrDefault();
return(relationshipSourcePropertyMapping);
}
/// <summary>
/// Default constructor.
/// </summary>
public GenericSqlStatements(IStatementSqlBuilder sqlBuilder)
{
_sqlBuilder = sqlBuilder;
}
private Tuple<PropertyMapping, PropertyMapping>[] GetRelationshipLink(
IStatementSqlBuilder sourceSqlBuilder,
PropertyMapping sourcePropMapping,
IStatementSqlBuilder destinationSqlBuilder,
PropertyMapping destinationPropMapping)
{
var sourcePropNames = sourcePropMapping.RelationshipPropertyNames;
var destinationPropNames = destinationPropMapping.RelationshipPropertyNames;
if (sourcePropNames == null)
{
throw new InvalidOperationException($"No property was found for the relationship denoted by '{sourcePropMapping.PropertyName}' on '{sourceSqlBuilder.EntityMapping.EntityType.Name}'");
}
if (destinationPropNames == null)
{
throw new InvalidOperationException($"No property was found for the relationship denoted by '{destinationPropMapping.PropertyName}' on '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
if (sourcePropNames.Length == 0 && destinationPropNames.Length == 0)
{
throw new InvalidOperationException($"No properties were found for the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
if (sourcePropNames.Length == 0)
{
if (sourceSqlBuilder.KeyProperties.Length != 1)
{
throw new InvalidOperationException($"Unable to infer the property used in the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
sourcePropNames = new[] { sourceSqlBuilder.KeyProperties[0].PropertyName };
}
if (destinationPropNames.Length == 0)
{
if (destinationSqlBuilder.KeyProperties.Length != 1)
{
throw new InvalidOperationException($"Unable to infer the property used in the relationship between '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]' and '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' ");
}
destinationPropNames = new[] { sourceSqlBuilder.KeyProperties[0].PropertyName };
}
if (sourcePropNames.Length != destinationPropNames.Length)
{
throw new InvalidOperationException("Invalid number of properties used in the relationship between '{sourceSqlBuilder.EntityMapping.EntityType.Name}[{sourcePropMapping.PropertyName}]' and '{destinationSqlBuilder.EntityMapping.EntityType.Name}[{destinationPropMapping.PropertyName}]'");
}
return Enumerable.Range(0, sourcePropNames.Length).Select(
index =>
{
PropertyMapping sourcePropertyMapping;
if (!sourceSqlBuilder.EntityMapping.PropertyMappings.TryGetValue(sourcePropNames[index], out sourcePropertyMapping))
{
throw new InvalidOperationException($"Unable to locate property '{sourcePropNames[index]}' on the entity '{sourceSqlBuilder.EntityMapping.EntityType.Name}' for the relationship with '{destinationSqlBuilder.EntityMapping.EntityType.Name}'");
}
PropertyMapping destinationPropertyMapping;
if (!destinationSqlBuilder.EntityMapping.PropertyMappings.TryGetValue(destinationPropNames[index], out destinationPropertyMapping))
{
throw new InvalidOperationException($"Unable to locate property '{destinationPropNames[index]}' on the entity '{destinationSqlBuilder.EntityMapping.EntityType.Name}' for the relationship with '{sourceSqlBuilder.EntityMapping.EntityType.Name}'");
}
return new Tuple<PropertyMapping, PropertyMapping>(sourcePropertyMapping, destinationPropertyMapping);
}).ToArray();
}
