private static AttributeDateValue GetFirstDate(Attribute leftAttrib)
{
if (leftAttrib == null || leftAttrib.AttributeDateValues == null)
{
return(null);
}
return(leftAttrib.AttributeDateValues.FirstOrDefault());
}
private static AttributeLongStringValue GetFirstLongString(Attribute leftAttrib)
{
if (leftAttrib == null || leftAttrib.AttributeLongStringValues == null)
{
return(null);
}
return(leftAttrib.AttributeLongStringValues.FirstOrDefault());
}
public override QueryOver <NodeVersion> VisitFieldPredicate(FieldPredicateExpression node)
{
var fieldName = node.SelectorExpression.FieldName;
var valueKey = node.SelectorExpression.ValueKey;
var fieldValue = node.ValueExpression.Value;
var fieldValueType = fieldValue != null?fieldValue.GetType() : typeof(string);
switch (fieldName.ToLowerInvariant())
{
case "id":
Guid idValue = GetIdValue(node);
switch (node.ValueExpression.ClauseType)
{
case ValuePredicateType.Equal:
return(QueryOver.Of <NodeVersion>().Where(x => x.Node.Id == idValue).Select(x => x.Id));
case ValuePredicateType.NotEqual:
return(QueryOver.Of <NodeVersion>().Where(x => x.Node.Id != idValue).Select(x => x.Id));;
default:
throw new InvalidOperationException(
"Cannot query an item by id by any other operator than == or !=");
}
}
// First look up the types of the main field
AttributeDefinition defAlias = null;
AttributeType typeAlias = null;
var attributeType = _activeSession.QueryOver <AttributeDefinition>(() => defAlias)
.JoinAlias(() => defAlias.AttributeType, () => typeAlias)
.Where(() => defAlias.Alias == fieldName)
.Select(x => typeAlias.PersistenceTypeProvider)
.List <string>();
var typesAlreadyEstablished = new List <string>();
var typesToQuery = new List <DataSerializationTypes>();
foreach (var type in attributeType)
{
var typeName = type;
if (typesAlreadyEstablished.Contains(typeName))
{
continue;
}
try
{
typesAlreadyEstablished.Add(typeName);
var persisterType = Type.GetType(typeName, false);
if (persisterType != null)
{
var persisterInstance = Activator.CreateInstance(persisterType) as IAttributeSerializationDefinition;
if (persisterInstance != null)
{
typesToQuery.Add(persisterInstance.DataSerializationType);
}
}
}
catch (Exception)
{
throw;
}
}
// U5-789
// Workaround pending a better check of what data is actually saved
// An issue arose because previous data had been saved in long-string,
// but the datatype changed to be just string, therefore only string was
// being queried despite all the data residing still in long-string
if (typesToQuery.Contains(DataSerializationTypes.String) && !typesToQuery.Contains(DataSerializationTypes.LongString))
{
typesToQuery.Add(DataSerializationTypes.LongString);
}
NodeVersion aliasNodeVersion = null;
Attribute aliasAttribute = null;
AttributeDefinition aliasAttributeDefinition = null;
AttributeStringValue aliasStringValue = null;
AttributeLongStringValue aliasLongStringValue = null;
AttributeIntegerValue aliasIntegerValue = null;
AttributeDecimalValue aliasDecimalValue = null;
NodeRelation aliasNodeRelation = null;
AttributeDateValue aliasDateValue = null;
QueryOver <NodeVersion, AttributeDefinition> queryExtender = QueryOver.Of <NodeVersion>(() => aliasNodeVersion)
.JoinQueryOver <Attribute>(() => aliasNodeVersion.Attributes, () => aliasAttribute)
.JoinQueryOver <AttributeDefinition>(() => aliasAttribute.AttributeDefinition, () => aliasAttributeDefinition);
int numberOfMatchesEvaluated = 0;
AbstractCriterion restrictionBuilder = null;
foreach (var dataSerializationTypese in typesToQuery.Distinct())
{
AbstractCriterion restriction = null;
Expression <Func <object> > propertyExpression = null;
Expression <Func <object> > subkeyExpression = null;
List <ValuePredicateType> validClauseTypes = null;
var useLikeMatchForStrings = false;
switch (dataSerializationTypese)
{
case DataSerializationTypes.SmallInt:
case DataSerializationTypes.LargeInt:
case DataSerializationTypes.Boolean:
queryExtender = queryExtender.Left.JoinAlias(() => aliasAttribute.AttributeIntegerValues, () => aliasIntegerValue);
propertyExpression = () => aliasIntegerValue.Value;
subkeyExpression = () => aliasIntegerValue.ValueKey;
validClauseTypes = new List <ValuePredicateType>()
{
ValuePredicateType.Equal,
ValuePredicateType.GreaterThan,
ValuePredicateType.GreaterThanOrEqual,
ValuePredicateType.LessThan,
ValuePredicateType.LessThanOrEqual,
ValuePredicateType.NotEqual
};
break;
case DataSerializationTypes.Decimal:
queryExtender = queryExtender.Left.JoinAlias(() => aliasAttribute.AttributeDecimalValues, () => aliasDecimalValue);
propertyExpression = () => aliasDecimalValue.Value;
subkeyExpression = () => aliasDecimalValue.ValueKey;
validClauseTypes = new List <ValuePredicateType>()
{
ValuePredicateType.Equal,
ValuePredicateType.GreaterThan,
ValuePredicateType.GreaterThanOrEqual,
ValuePredicateType.LessThan,
ValuePredicateType.LessThanOrEqual,
ValuePredicateType.NotEqual
};
break;
case DataSerializationTypes.String:
queryExtender = queryExtender.Left.JoinAlias(() => aliasAttribute.AttributeStringValues, () => aliasStringValue);
propertyExpression = () => aliasStringValue.Value;
subkeyExpression = () => aliasStringValue.ValueKey;
validClauseTypes = new List <ValuePredicateType>()
{
ValuePredicateType.Equal,
ValuePredicateType.NotEqual,
ValuePredicateType.Contains,
ValuePredicateType.StartsWith,
ValuePredicateType.EndsWith,
ValuePredicateType.MatchesWildcard
};
break;
case DataSerializationTypes.LongString:
queryExtender = queryExtender.Left.JoinAlias(() => aliasAttribute.AttributeLongStringValues, () => aliasLongStringValue);
propertyExpression = () => aliasLongStringValue.Value;
subkeyExpression = () => aliasLongStringValue.ValueKey;
useLikeMatchForStrings = true;
validClauseTypes = new List <ValuePredicateType>()
{
ValuePredicateType.Equal,
ValuePredicateType.NotEqual,
ValuePredicateType.Contains,
ValuePredicateType.StartsWith,
ValuePredicateType.EndsWith,
ValuePredicateType.MatchesWildcard
};
break;
case DataSerializationTypes.Date:
queryExtender = queryExtender.Left.JoinAlias(() => aliasAttribute.AttributeDateValues, () => aliasDateValue);
propertyExpression = () => aliasDateValue.Value;
subkeyExpression = () => aliasDateValue.ValueKey;
validClauseTypes = new List <ValuePredicateType>()
{
ValuePredicateType.Equal,
ValuePredicateType.GreaterThan,
ValuePredicateType.GreaterThanOrEqual,
ValuePredicateType.LessThan,
ValuePredicateType.LessThanOrEqual,
ValuePredicateType.NotEqual,
ValuePredicateType.Empty
};
break;
}
if (!validClauseTypes.Contains(node.ValueExpression.ClauseType))
{
throw new InvalidOperationException("A field of type {0} cannot be queried with operator {1}".InvariantFormat(dataSerializationTypese.ToString(), node.ValueExpression.ClauseType.ToString()));
}
switch (node.ValueExpression.ClauseType)
{
case ValuePredicateType.Equal:
restriction = GetRestrictionEq(fieldValue, useLikeMatchForStrings, propertyExpression, subkeyExpression, valueKey);
break;
case ValuePredicateType.NotEqual:
restriction = !GetRestrictionEq(fieldValue, useLikeMatchForStrings, propertyExpression);
break;
case ValuePredicateType.LessThan:
restriction = GetRestrictionLt(fieldValue, propertyExpression);
break;
case ValuePredicateType.LessThanOrEqual:
restriction = GetRestrictionLtEq(fieldValue, propertyExpression);
break;
case ValuePredicateType.GreaterThan:
restriction = GetRestrictionGt(fieldValue, propertyExpression);
break;
case ValuePredicateType.GreaterThanOrEqual:
restriction = GetRestrictionGtEq(fieldValue, propertyExpression);
break;
case ValuePredicateType.Contains:
restriction = GetRestrictionContains(fieldValue, propertyExpression);
break;
case ValuePredicateType.StartsWith:
restriction = GetRestrictionStarts(fieldValue, propertyExpression);
break;
case ValuePredicateType.EndsWith:
restriction = GetRestrictionEnds(fieldValue, propertyExpression);
break;
}
if (restriction != null)
{
if (numberOfMatchesEvaluated == 0)
{
restrictionBuilder = restriction;
numberOfMatchesEvaluated++;
}
else
{
restrictionBuilder = Restrictions.Or(restriction, restrictionBuilder);
}
}
}
if (restrictionBuilder != null)
{
queryExtender = queryExtender.Where(restrictionBuilder);
}
queryExtender = queryExtender
.And(x => aliasAttributeDefinition.Alias == fieldName);
return(queryExtender.Select(x => x.Id));
}
