/// <summary>
/// Initializes a new instance of the <see cref="CacheDependency"/> class that monitors an array of file paths (to files or
/// directories), an array of cache keys, or both for changes. It also
/// makes itself dependent upon another instance of the <see cref="CacheDependency"/>
/// class and a time when the change monitoring begins.
/// </summary>
/// <param name="fileNames">An array of file paths (to files or directories) that the cached object
/// is dependent upon. When any of these resources change, the cached object becomes obsolete and
/// is removed from the cache.</param>
/// <param name="cacheKeys">An array of cache keys that the new object monitors for changes. When
/// any of these cache keys change, the cached object associated with this dependency object
/// becomes obsolete and is removed from the cache.</param>
/// <param name="dependency">Another instance of the <see cref="CacheDependency"/> class that this
/// instance is dependent upon.</param>
/// <param name="start">The time when change tracking begins.</param>
/// <exception cref="ArgumentNullException"><paramref name="fileNames"/> or <paramref name="cacheKeys"/> contains a
/// null reference (Nothing in Visual Basic).</exception>
/// <remarks>
/// If any of the files or directories in the array were to change or be removed from the array,
/// the cached item becomes obsolete and is removed from the application's <see cref="Cache"/> object.
/// <para>
/// Also, if any of the directories or files specified in the <paramref name="fileNames"/> parameter is not found in the
/// file system, they are treated as missing files. If any of them are created after the object with the
/// dependency is added to the <see cref="Cache"/>, the cached object will be removed from the <see cref="Cache"/>.For example,
/// assume that you add an object to the <see cref="Cache"/> with a dependency on the following file path:
/// c:\stocks\xyz.dat. If that file is not found when the <see cref="CacheDependency"/> object is created, but is
/// created later, the cached object is removed upon the creation of the xyz.dat file.
/// </para>
/// </remarks>
public CacheDependency(string[] fileNames, string[] cacheKeys, CacheDependency dependency, DateTime start)//:base(start)
{
CacheDependency fileDependency = null;
CacheDependency keyDependency = null;
if (fileNames != null)
{
if (fileNames.Length == 0)
{
throw new ArgumentException("fileNames array must have atleast one file name");
}
foreach (string fileName in fileNames)
{
if (fileName == null)
{
throw new ArgumentNullException("fileName");
}
if (fileName == string.Empty)
{
throw new ArgumentException("fileName cannot be empty string");
}
}
fileDependency = new FileDependency(fileNames, start);
}
if (cacheKeys != null)
{
if (cacheKeys.Length == 0)
{
throw new ArgumentException("fileNames array must have atleast one file name");
}
foreach (string cachekey in cacheKeys)
{
if (cachekey == null)
{
throw new ArgumentNullException("cacheKey");
}
if (cachekey == string.Empty)
{
throw new ArgumentException("cacheKey cannot be empty string");
}
}
keyDependency = new KeyDependency(cacheKeys, start);
}
if (fileDependency != null || keyDependency != null || dependency != null)
{
if (_dependencies == null)
{
_dependencies = new List <CacheDependency>();
}
if (fileDependency != null)
{
_dependencies.Add(fileDependency);
}
if (keyDependency != null)
{
_dependencies.Add(keyDependency);
}
if (dependency != null)
{
_dependencies.Add(dependency);
}
}
_startAfter = start;
}
public static Dependency GetProtoBufDependency(CacheDependency cacheDependency, Dependency dependency)
{
if (cacheDependency is Runtime.Dependencies.FileDependency)
{
Runtime.Dependencies.FileDependency fileDependency = cacheDependency as Runtime.Dependencies.FileDependency;
Protobuf.FileDependency protoDependency = new Protobuf.FileDependency();
protoDependency.filePaths.AddRange(fileDependency.fileNames);
protoDependency.startAfter = fileDependency.StartAfterTicks;
dependency.fileDep.Add(protoDependency);
return(dependency);
}
else if (cacheDependency is Runtime.Dependencies.KeyDependency)
{
Runtime.Dependencies.KeyDependency keyDependency = cacheDependency as Runtime.Dependencies.KeyDependency;
Alachisoft.NCache.Common.Protobuf.KeyDependency protoDependency = new Alachisoft.NCache.Common.Protobuf.KeyDependency();
protoDependency.keys.AddRange(keyDependency.CacheKeys);
protoDependency.startAfter = keyDependency.StartAfterTicks;
dependency.keyDep.Add(protoDependency);
return(dependency);
}
else if (cacheDependency is Runtime.Dependencies.DBCacheDependency)
{
Runtime.Dependencies.DBCacheDependency dbDependency = cacheDependency as Runtime.Dependencies.DBCacheDependency;
switch (dbDependency.Type)
{
case Runtime.Dependencies.DBDependencyType.OleDbCacheDependency:
OleDbDependency oleDbDependency = new OleDbDependency();
oleDbDependency.connectionString = dbDependency.ConnectionString;
oleDbDependency.dbCacheKey = dbDependency.PrimaryKey;
dependency.oleDbDep.Add(oleDbDependency);
break;
case Runtime.Dependencies.DBDependencyType.SqlCacheDependency:
Sql7Dependency sqlDependency = new Sql7Dependency();
sqlDependency.connectionString = dbDependency.ConnectionString;
sqlDependency.dbCacheKey = dbDependency.PrimaryKey;
dependency.sql7Dep.Add(sqlDependency);
break;
}
return(dependency);
}
else if (cacheDependency is Runtime.Dependencies.SqlCacheDependency)
{
Runtime.Dependencies.SqlCacheDependency sqlDependency = cacheDependency as Runtime.Dependencies.SqlCacheDependency;
YukonDependency yukonDependency = new YukonDependency();
yukonDependency.commandType = Convert.ToInt32(sqlDependency.CommandType);
yukonDependency.connectionString = sqlDependency.ConnectionString;
yukonDependency.query = sqlDependency.CommandText;
if (sqlDependency.CommandParams != null)
{
foreach (KeyValuePair <string, Runtime.Dependencies.SqlCmdParams> pair in sqlDependency.CommandParams)
{
Runtime.Dependencies.SqlCmdParams param = pair.Value;
YukonParam yukonParam = new YukonParam();
yukonParam.key = pair.Key;
YukonCommandParam yukonCmdParam = new YukonCommandParam();
yukonCmdParam.dbType = (int)param.SqlParamType;
yukonCmdParam.direction = (int)param.SqlParamDir;
yukonCmdParam.isNullable = param.IsNullable;
yukonCmdParam.localeId = param.LocaleID;
yukonCmdParam.offset = param.Offset;
yukonCmdParam.precision = param.Precision;
yukonCmdParam.scale = param.Scale;
yukonCmdParam.size = param.Size;
yukonCmdParam.sourceColumn = param.SourceColumn;
yukonCmdParam.sourceColumnNull = param.SourceColumnNullMapping;
yukonCmdParam.sqlValue = param.SqlValue != null?param.SqlValue.ToString() : "";
yukonCmdParam.version = (int)param.SrcVersion;
yukonCmdParam.typeName = param.TypeName;
yukonCmdParam.typeId = (int)param.Type;
yukonCmdParam.udtTypeName = param.UdtTypeName;
yukonCmdParam.nullValueProvided = param.Value == null ? true : false;
if (!yukonCmdParam.nullValueProvided)
{
if (param.Type == CmdParamsType.Binary || param.Type == CmdParamsType.VarBinary /*|| param.Type == CmdParamsType.Image */ || param.Type == CmdParamsType.Timestamp)
{
byte[] val = param.Value as byte[];
if (val == null)
{
throw new OperationFailedException("Expected 'System.Byte[]' value for parameter '" + param.SourceColumn + "'");
}
else
{
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
yukonCmdParam.value = encoding.GetString(val);
}
}
else if (param.Type == CmdParamsType.DateTime || param.Type == CmdParamsType.DateTime2 || param.Type == CmdParamsType.Date || param.Type == CmdParamsType.SmallDateTime)
{
try
{
DateTime val = (DateTime)param.Value;
yukonCmdParam.value = val.Ticks.ToString();
}
catch (InvalidCastException ex)
{
throw new OperationFailedException("Expected 'System.DateTime' value for parameter type '" + param.Type + "'");
}
}
else if (param.Type == CmdParamsType.Time)
{
try
{
TimeSpan val = (TimeSpan)param.Value;
yukonCmdParam.value = val.Ticks.ToString();
}
catch (InvalidCastException ex)
{
throw new OperationFailedException("Expected 'System.TimeSpan' value for parameter '" + param.Type + "'");
}
}
else if (param.Type == CmdParamsType.DateTimeOffset)
{
try
{
DateTimeOffset val = (DateTimeOffset)param.Value;
yukonCmdParam.value = String.Concat(val.Date.Ticks, ",", val.Offset.Minutes);
}
catch (InvalidCastException ex)
{
throw new OperationFailedException("Expected 'System.DateTimeOffset' value for parameter '" + param.Type + "'");
}
}
else
{
yukonCmdParam.value = param.Value.ToString();
}
}
yukonParam.cmdParam = yukonCmdParam;
yukonDependency.param.Add(yukonParam);
}
}
dependency.yukonDep.Add(yukonDependency);
return(dependency);
}
else if (cacheDependency is Runtime.Dependencies.OracleCacheDependency)
{
Runtime.Dependencies.OracleCacheDependency oracleDependency = cacheDependency as Runtime.Dependencies.OracleCacheDependency;
OracleDependency protoDependency = new OracleDependency();
protoDependency.commandType = (int)oracleDependency.CommandType;
protoDependency.connectionString = oracleDependency.ConnectionString;
protoDependency.query = oracleDependency.CommandText;
if (oracleDependency.CommandParams != null)
{
foreach (KeyValuePair <string, Runtime.Dependencies.OracleCmdParams> pair in oracleDependency.CommandParams)
{
Runtime.Dependencies.OracleCmdParams oracleCommandParams = pair.Value;
OracleParam param = new OracleParam();
param.key = pair.Key;
OracleCommandParam oracleCmdParam = new OracleCommandParam();
oracleCmdParam.dbType = (int)oracleCommandParams.Type;
oracleCmdParam.direction = (int)oracleCommandParams.Direction;
oracleCmdParam.value = oracleCommandParams.Value != null?oracleCommandParams.Value.ToString() : "";
param.cmdParam = oracleCmdParam;
protoDependency.param.Add(param);
}
}
dependency.oracleDep.Add(protoDependency);
return(dependency);
}
else if (cacheDependency is Runtime.Dependencies.ExtensibleDependency)
{
Runtime.Dependencies.ExtensibleDependency extDependency = cacheDependency as Runtime.Dependencies.ExtensibleDependency;
IFormatter formatter = new BinaryFormatter();
MemoryStream stream = new MemoryStream();
formatter.Serialize(stream, extDependency);
Alachisoft.NCache.Common.Protobuf.ExtensibleDependency extensibleDependency = new Alachisoft.NCache.Common.Protobuf.ExtensibleDependency();
extensibleDependency.data = stream.ToArray();
dependency.xtDep.Add(extensibleDependency);
return(dependency);
}
else if (cacheDependency is NosDBDependency)
{
NosDBDependency sqlDependency = cacheDependency as NosDBDependency;
NosDbDependency nosDependency = new NosDbDependency();
nosDependency.timeout = Convert.ToInt32(sqlDependency.Timeout);
nosDependency.connectionString = sqlDependency.ConnectionString;
nosDependency.query = sqlDependency.CommandText;
if (sqlDependency.Parameters != null)
{
CommandHelper.PopulateValues(sqlDependency.Parameters, nosDependency.param);
}
dependency.NosDep.Add(nosDependency);
return(dependency);
}
else
{
foreach (Runtime.Dependencies.CacheDependency dep in cacheDependency.Dependencies)
{
dependency = GetProtoBufDependency(dep, dependency);
}
return(dependency);
}
}
