private void LoadTableInfo()
{
ClearTableData();
var tableInfoCache = SdkCache.GetCache <string, TableDescription>(DDBClient, TableInfoCacheIdentifier, StringComparer.Ordinal);
bool staleCacheData;
TableDescription table = tableInfoCache.GetValue(TableName, this.DescribeTable, out staleCacheData);
if (staleCacheData)
{
var logger = Logger.GetLogger(typeof(Table));
logger.InfoFormat("Description for table [{0}] loaded from SDK Cache", TableName);
}
foreach (var key in table.KeySchema)
{
string keyName = key.AttributeName;
AttributeDefinition attributeDefinition = table.AttributeDefinitions
.FirstOrDefault(a => string.Equals(a.AttributeName, keyName, StringComparison.Ordinal));
if (attributeDefinition == null)
{
throw new InvalidOperationException("No attribute definition found for key " + key.AttributeName);
}
KeyDescription keyDescription = new KeyDescription
{
IsHash = string.Equals(key.KeyType, "HASH", StringComparison.OrdinalIgnoreCase),
Type = GetType(attributeDefinition.AttributeType)
};
if (keyDescription.IsHash)
{
HashKeys.Add(keyName);
}
else
{
RangeKeys.Add(keyName);
}
Keys[keyName] = keyDescription;
}
if (table.LocalSecondaryIndexes != null)
{
foreach (var index in table.LocalSecondaryIndexes)
{
LocalSecondaryIndexes[index.IndexName] = index;
LocalSecondaryIndexNames.Add(index.IndexName);
}
}
if (table.GlobalSecondaryIndexes != null)
{
foreach (var index in table.GlobalSecondaryIndexes)
{
GlobalSecondaryIndexes[index.IndexName] = index;
GlobalSecondaryIndexNames.Add(index.IndexName);
}
}
foreach (var attribute in table.AttributeDefinitions)
{
Attributes.Add(attribute);
}
}
private void GetTableInfo()
{
DescribeTableRequest req = new DescribeTableRequest
{
TableName = TableName
};
req.BeforeRequestEvent += new RequestEventHandler(this.UserAgentRequestEventHandlerSync);
DescribeTableResult info = this.DDBClient.DescribeTable(req);
if (info.Table == null)
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, "Table name {0} does not exist", TableName));
}
Keys.Clear();
HashKeys.Clear();
RangeKeys.Clear();
TableDescription table = info.Table;
foreach (var key in table.KeySchema)
{
string keyName = key.AttributeName;
AttributeDefinition attributeDefinition = table.AttributeDefinitions
.FirstOrDefault(a => string.Equals(a.AttributeName, keyName, StringComparison.Ordinal));
if (attributeDefinition == null)
{
throw new InvalidOperationException("No attribute definition found for key " + key.AttributeName);
}
KeyDescription keyDescription = new KeyDescription
{
IsHash = string.Equals(key.KeyType, "HASH", StringComparison.OrdinalIgnoreCase),
Type = GetType(attributeDefinition.AttributeType)
};
if (keyDescription.IsHash)
{
HashKeys.Add(keyName);
}
else
{
RangeKeys.Add(keyName);
}
Keys[keyName] = keyDescription;
}
LocalSecondaryIndexes.Clear();
LocalSecondaryIndexNames.Clear();
if (table.LocalSecondaryIndexes != null)
{
foreach (var index in table.LocalSecondaryIndexes)
{
LocalSecondaryIndexes[index.IndexName] = index;
LocalSecondaryIndexNames.Add(index.IndexName);
}
}
GlobalSecondaryIndexes.Clear();
GlobalSecondaryIndexNames.Clear();
if (table.GlobalSecondaryIndexes != null)
{
foreach (var index in table.GlobalSecondaryIndexes)
{
GlobalSecondaryIndexes[index.IndexName] = index;
GlobalSecondaryIndexNames.Add(index.IndexName);
}
}
Attributes.Clear();
foreach (var attribute in table.AttributeDefinitions)
{
Attributes.Add(attribute);
}
keyNames = Keys.Keys.ToArray();
}