Logistiki.Projections.ProjectionEngine (logistiki v0.1.0)

Computes projections over immutable postings.

Balances are never authoritative stored state; they are derived here. The simulation backend delegates to this engine. The Beancount backend uses beancount_ex as the oracle and its results are compared against this engine's.

Supported projections

balance/2 — leaf or parent account (aggregates descendants)
balance_for_entity/2 — accounts linked to an entity
balance_for_entity_tree/2 — accounts linked to an entity subtree
statement/2 — running-balance statement lines
trial_balance/1 — debit/credit totals per account per currency
general_ledger/1 — all postings ordered
balance_sheet/1, income_statement/1 — sectioned views

Summary

Functions

balance(account, opts \\ [])

Computes the balance(s) for account (a struct, id, or code). Aggregates descendants for parent accounts.

balance_for_entity(entity, opts \\ [])

Computes balances for accounts linked to entity.

balance_for_entity_tree(entity, opts \\ [])

Computes balances for accounts linked to entity or any of its descendants.

balance_sheet(opts \\ [])

Builds a balance sheet (assets, liabilities, equity).

general_ledger(opts \\ [])

Builds a general ledger view of all posted postings.

income_statement(opts \\ [])

Builds an income statement (income, expenses, net profit).

statement(account, opts \\ [])

Builds a running-balance statement for account (aggregates descendant postings).

trial_balance(opts \\ [])

Builds a trial balance across all posted journals.

Functions

balance(account, opts \\ [])

(since 0.1.0)

Computes the balance(s) for account (a struct, id, or code). Aggregates descendants for parent accounts.

balance_for_entity(entity, opts \\ [])

(since 0.1.0)

Computes balances for accounts linked to entity.

balance_for_entity_tree(entity, opts \\ [])

(since 0.1.0)

Computes balances for accounts linked to entity or any of its descendants.

balance_sheet(opts \\ [])

(since 0.1.0)

Builds a balance sheet (assets, liabilities, equity).

general_ledger(opts \\ [])

(since 0.1.0)

Builds a general ledger view of all posted postings.

income_statement(opts \\ [])

(since 0.1.0)

Builds an income statement (income, expenses, net profit).

statement(account, opts \\ [])

(since 0.1.0)

Builds a running-balance statement for account (aggregates descendant postings).

trial_balance(opts \\ [])

(since 0.1.0)

Builds a trial balance across all posted journals.