/// <summary>
/// 通过多个参数构造一个新的<see cref="GetRangeRequest"/>
/// </summary>
/// <param name="tableName">表名称</param>
/// <param name="direction">前向还是后向</param>
/// <param name="inclusiveStartPrimaryKey">区间开始位置，包含</param>
/// <param name="exclusiveEndPrimaryKey">区间结束位置，不包含</param>
/// <param name="columnsToGet">返回的列名称的列表</param>
/// <param name="limit">最大返回数</param>
public GetRangeRequest(string tableName,
GetRangeDirection direction,
PrimaryKey inclusiveStartPrimaryKey,
PrimaryKey exclusiveEndPrimaryKey,
HashSet <string> columnsToGet = null,
int?limit = null,
IColumnCondition condition = null)
{
QueryCriteria = new RangeRowQueryCriteria(tableName)
{
Direction = direction,
Limit = limit,
InclusiveStartPrimaryKey = inclusiveStartPrimaryKey,
ExclusiveEndPrimaryKey = exclusiveEndPrimaryKey
};
if (columnsToGet != null)
{
QueryCriteria.SetColumnsToGet(columnsToGet);
}
if (condition != null)
{
QueryCriteria.Filter = condition.ToFilter();
}
}
/// <summary>
/// 添加一个表的多行读请求。
/// </summary>
/// <param name="tableName">表名</param>
/// <param name="primaryKeys">多行的主键</param>
/// <param name="columnsToGet">要读取的列</param>
/// <param name="condition">过滤条件</param>
public void Add(string tableName,
List <PrimaryKey> primaryKeys,
HashSet <string> columnsToGet = null,
IColumnCondition condition = null)
{
var rowQueryCriteria = new MultiRowQueryCriteria(tableName);
rowQueryCriteria.SetRowKeys(primaryKeys);
if (columnsToGet != null)
{
rowQueryCriteria.SetColumnsToGet(columnsToGet);
}
if (condition != null)
{
rowQueryCriteria.Filter = condition.ToFilter();
}
rowQueryCriteriaDict[tableName] = rowQueryCriteria;
}
/// <summary>
/// 构造一个新的<see cref="GetRowRequest" />实例。
/// </summary>
/// <param name="tableName">表名称</param>
/// <param name="primaryKey">主键</param>
/// <param name="columnsToGet">获取的列名称列表，如果为空，则获取所有列</param>
/// <param name="condition">过滤条件</param>
public GetRowRequest(string tableName,
PrimaryKey primaryKey,
HashSet <string> columnsToGet = null,
IColumnCondition condition = null,
TimeRange timeRange = null,
int?maxVersion = null,
bool?cacheBlocks = null,
string startColumn = null,
string endColumn = null,
byte[] token = null
)
{
QueryCriteria = new SingleRowQueryCriteria(tableName)
{
RowPrimaryKey = primaryKey
};
if (columnsToGet != null)
{
QueryCriteria.SetColumnsToGet(columnsToGet);
}
if (condition != null)
{
QueryCriteria.Filter = condition.ToFilter();
}
if (timeRange != null)
{
QueryCriteria.TimeRange = timeRange;
}
QueryCriteria.MaxVersions = maxVersion;
QueryCriteria.CacheBlocks = cacheBlocks;
QueryCriteria.StartColumn = startColumn;
QueryCriteria.EndColumn = endColumn;
QueryCriteria.Token = token;
}