private void LoadTableMetaData()
{
// Try to load the partition meta data from the existing table (which contains a list of the partition keys in the table).
_partitionMetaDataEntityWrapper = _tableMetaDataContext.Find(CtConstants.TableMetaDataPartitionKey, CtConstants.PartitionSchemasRowKey);
// Set the default PartitionKey using the combination below in case there are more than one CloudTableContext objects
// on the same table.
_defaultIndexDefinitionName = $"DefaultIndex_ofType_{typeof(TDomainEntity).Name}";
if (_partitionMetaDataEntityWrapper != null)
{
/* This is going through and populating the local PartitionKeysInTable property with the list of keys retrieved
* from the Azure table.
* This also checks to see if there is a PartitionKey for the table meta data and the DefaultPartition
* and adds that if there isn't*/
var metaDataPkIsInList = false;
foreach (var partitionKeyString in _partitionMetaDataEntityWrapper.DomainObjectInstance.PartitionKeys)
{
if (partitionKeyString == CtConstants.TableMetaDataPartitionKey)
{
metaDataPkIsInList = true;
}
var isInList = false;
foreach (var item in IndexNameKeysInTable)
{
if (item == partitionKeyString)
{
isInList = true;
}
}
if (!isInList)
{
IndexNameKeysInTable.Add(partitionKeyString);
}
}
if (!metaDataPkIsInList)
{
IndexNameKeysInTable.Add(CtConstants.TableMetaDataPartitionKey);
}
// The RowKey for the DefaultSchema is set by the given ID property of the TDomainEntity object
DefaultIndex = CreateIndexDefinition(_defaultIndexDefinitionName)
.DefineIndexCriteria(entity => true)
.SetIndexedPropertyCriteria(entity => entity.GetType().Name); // Enables searching directly on the type.
if (IndexDefinitions.All(indexDefinition => indexDefinition.IndexNameKey != DefaultIndex.IndexNameKey))
{
AddIndexDefinition(DefaultIndex);
}
}
else
{
/* Creates a new partition meta data entity and adds the appropriate default partitions and metadata partitions*/
_partitionMetaDataEntityWrapper = new TableEntityWrapper <PartitionMetaData>(CtConstants.TableMetaDataPartitionKey,
CtConstants.PartitionSchemasRowKey);
DefaultIndex = CreateIndexDefinition(_defaultIndexDefinitionName)
.DefineIndexCriteria(entity => true)
.SetIndexedPropertyCriteria(entity => entity.GetType().Name); // Enables searching directly on the type
AddIndexDefinition(DefaultIndex);
}
}
/// <summary>
/// Adds a single Index Definition to the current <see cref="TableContext{TDomainEntity}"/>.
/// </summary>
/// <param name="tableIndexDefinition"></param>
public void AddIndexDefinition(TableIndexDefinition <TDomainEntity> tableIndexDefinition)
{
if (IndexDefinitions.Any(indexDef => indexDef.IndexNameKey == tableIndexDefinition.IndexNameKey))
{
return;
}
IndexDefinitions.Add(tableIndexDefinition);
}
/// <summary>
/// Adds multiple Index Definitions types to the current <see cref="TableContext{TDomainEntity}"/>.
/// </summary>
/// <param name="indexDefinitions"></param>
public void AddMultipleIndexDefinitions(List <TableIndexDefinition <TDomainEntity> > indexDefinitions)
{
foreach (var indexDefinition in indexDefinitions)
{
if (IndexDefinitions.Any(indexDef => indexDef.IndexNameKey == indexDefinition.IndexNameKey))
{
continue;
}
IndexDefinitions.Add(indexDefinition);
}
}
