class

Spacetime::TableCache(T)

Inherits Enumerable < Spacetime::AbstractTableCache < Reference < Object

Strongly-typed reactive client-side cache for a SpacetimeDB table T.

Automatically reconciles row insertions, deletions, and primary-key updates from InitialSubscription, SubscribeApplied, and TransactionUpdate messages.

Constructors

new(custom_name : String | Nil = nil)
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Instance methods

[](pk) : T
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all
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apply_table_update(update : Protocol::TableUpdate) : Nil

Applies a Protocol::TableUpdate (from BSATN or SATS-JSON) and triggers reactive callbacks.

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clear
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count
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each

Must yield this collection's elements to the block.

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empty?

Returns true if self does not contain any element.

([] of Int32).empty? # => true
([1]).empty?         # => false
[nil, false].empty?  # => false
  • #present? returns the inverse.
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filter
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find_by_pk(pk) : T | Nil

Looks up a row by its @[Spacetime::PrimaryKey] value.

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on_delete
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on_insert
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on_update
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size

Returns the number of elements in the collection.

[1, 2, 3, 4].size # => 4
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table_name
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