/// <summary>
/// Initializes a new instance of the <see cref="PsiStoreReader"/> class.
/// </summary>
/// <param name="name">The name of the application that generated the persisted files, or the root name of the files.</param>
/// <param name="path">The directory in which the main persisted file resides or will reside, or null to create a volatile data store.</param>
/// <param name="metadataUpdateHandler">Delegate to call.</param>
/// <param name="autoOpenAllStreams">Automatically open all streams.</param>
public PsiStoreReader(string name, string path, Action <IEnumerable <Metadata>, RuntimeInfo> metadataUpdateHandler, bool autoOpenAllStreams = false)
{
this.Name = name;
this.Path = PsiStore.GetPathToLatestVersion(name, path);
this.AutoOpenAllStreams = autoOpenAllStreams;
// open the data readers
this.messageReader = new MessageReader(PsiStoreCommon.GetDataFileName(this.Name), this.Path);
this.largeMessageReader = new MessageReader(PsiStoreCommon.GetLargeDataFileName(this.Name), this.Path);
this.indexCache = Shared.Create(new PageIndexCache(name, this.Path));
this.metadataCache = Shared.Create(new MetadataCache(name, this.Path, metadataUpdateHandler));
}
/// <summary>
/// Initializes a new instance of the <see cref="JsonStoreReader"/> class.
/// </summary>
/// <param name="name">The name of the application that generated the persisted files, or the root name of the files.</param>
/// <param name="path">The directory in which the main persisted file resides or will reside, or null to create a volatile data store.</param>
/// <param name="extension">The extension for the underlying file.</param>
public JsonStoreReader(string name, string path, string extension = DefaultExtension)
: base(extension)
{
this.Name = name;
this.Path = PsiStore.GetPathToLatestVersion(name, path);
// load catalog
string metadataPath = System.IO.Path.Combine(this.Path, PsiStoreCommon.GetCatalogFileName(this.Name) + this.Extension);
this.Size = new FileInfo(metadataPath).Length;
using (var file = File.OpenText(metadataPath))
using (var reader = new JsonTextReader(file))
{
this.catalog = this.Serializer.Deserialize <List <JsonStreamMetadata> >(reader);
}
// compute originating time interval
this.originatingTimeInterval = TimeInterval.Empty;
foreach (var metadata in this.catalog)
{
var metadataTimeInterval = new TimeInterval(metadata.FirstMessageOriginatingTime, metadata.LastMessageOriginatingTime);
this.originatingTimeInterval = TimeInterval.Coverage(new TimeInterval[] { this.originatingTimeInterval, metadataTimeInterval });
}
}
