class TrailDB

• TrailDB
• Reference
• Object

Overview

Load a TrailDB, including metadata and a trails iterator

Defined in:

traildb.cr

Constructors

• .new(path : String)

  Load a TrailDB at path (the .tdb extension is optional).

Instance Method Summary

• #[](uuidish : String | UInt64 | Int32)

  Return a iterator for the given UUID.

• #create_filter(query : TrailDBEventFilterQuery, set_filter : Bool = false)

  Create TrailDB filter

• #db : Pointer(Void)

  Raw TrailDB pointer.

• #event_filter : TrailDBEventFilter?

  The current event filter.

• #event_filter=(event_filter)

  The current event filter.

• #field(fieldish : TrailDBField) : TdbField

  Return a field ID for given a field name or field ID.

• #fields : Array(String)

  Field strings.

• #finalize
• #get_item(fieldish : String, value : String) : TdbItem

  Return the item corresponding to a field ID or a field name and a string value.

• #get_item_value(item : TdbItem) : String

  Return the string value corresponding to an item.

• #get_trail_id(uuid : String)

  Return Trail ID given a UUID.

• #get_uuid(trail_id : UInt64 | Int32, raw = false) : String

  Return UUID given a Trail ID.

• #get_value(fieldish : TrailDBField, val : TdbVal) : String

  Return the string value corresponding to a field ID or a field name and a value ID.

• #includes?(uuidish)

  Return true if UUID or Trail ID exists in this TrailDB.

• #lexicon(fieldish : TrailDBField)

  Return an iterator over values of the given field ID or field name.

• #lexicon_size(fieldish : TrailDBField) : TdbVal

  Return the number of distinct values in the given field ID or field name.

• #max_timestamp

  Return the maximum time stamp of this TrailDB.

• #min_timestamp

  Return the minimum time stamp of this TrailDB.

• #num_events : UInt64

  Number of events.

• #num_fields : UInt64

  Number of fields.

• #num_trails : UInt64

  Number of trails.

• #parse_timestamp : Bool

  Whether to parse timestamp as a Time, or leave as UInt64

• #parse_timestamp=(parse_timestamp)

  Whether to parse timestamp as a Time, or leave as UInt64

• #reuse_cursor : Bool

  Whether to reuse the TrailDB cursor.

• #reuse_cursor=(reuse_cursor : Bool)

  Set whether to reuse the TrailDB cursor

• #time_range

  Return the time range covered by this TrailDB.

• #trails

  Return a iterator for all trails.

Constructor Detail

Instance Method Detail