Hledger.Query

A general query system for matching things (accounts, postings, transactions..) by various criteria, and a SimpleTextParser for query expressions.

Query and QueryOpt

data Query

A query is a composition of search criteria, which can be used to match postings, transactions, accounts and more.

Constructors

Any

always match

None

never match

Not Query

negate this match

Or [Query]

match if any of these match

And [Query]

match if all of these match

Code Regexp

match if code matches this regexp

Desc Regexp

match if description matches this regexp

Acct Regexp

match postings whose account matches this regexp

Date DateSpan

match if primary date in this date span

Date2 DateSpan

match if secondary date in this date span

StatusQ Status

match txns/postings with this status

Real Bool

match if "realness" (involves a real non-virtual account ?) has this value

Amt OrdPlus Quantity

match if the amount's numeric quantity is less thangreater thanequal to/unsignedly equal to some value

Sym Regexp

match if the entire commodity symbol is matched by this regexp

Depth Int

match if account depth is less than or equal to this value. Depth is sometimes used like a query (for filtering report data) and sometimes like a query option (for controlling display)

Tag Regexp (Maybe Regexp)

match if a tag's name, and optionally its value, is matched by these respective regexps matching the regexp if provided, exists

Instances

Eq Query

Defined in Hledger.Query

Methods

(==) :: Query -> Query -> Bool

(/=) :: Query -> Query -> Bool

Show Query

Defined in Hledger.Query

Methods

showsPrec :: Int -> Query -> ShowS

show :: Query -> String

showList :: [Query] -> ShowS

Default Query

Defined in Hledger.Query

Methods

def :: Query

data QueryOpt

A query option changes a query's/report's behaviour and output in some way.

Constructors

QueryOptInAcctOnly AccountName

show an account register focussed on this account

QueryOptInAcct AccountName

as above but include sub-accounts in the account register | QueryOptCostBasis -- ^ show amounts converted to cost where possible | QueryOptDate2 -- ^ show secondary dates instead of primary dates

Instances

Eq QueryOpt

Defined in Hledger.Query

Methods

(==) :: QueryOpt -> QueryOpt -> Bool

(/=) :: QueryOpt -> QueryOpt -> Bool

Show QueryOpt

Defined in Hledger.Query

Methods

showsPrec :: Int -> QueryOpt -> ShowS

show :: QueryOpt -> String

showList :: [QueryOpt] -> ShowS

data OrdPlus

A more expressive Ord, used for amt: queries. The Abs* variants compare with the absolute value of a number, ignoring sign.

Constructors

Lt

LtEq

Gt

GtEq

Eq

AbsLt

AbsLtEq

AbsGt

AbsGtEq

AbsEq

Instances

Eq OrdPlus

Defined in Hledger.Query

Methods

(==) :: OrdPlus -> OrdPlus -> Bool

(/=) :: OrdPlus -> OrdPlus -> Bool

Show OrdPlus

Defined in Hledger.Query

Methods

showsPrec :: Int -> OrdPlus -> ShowS

show :: OrdPlus -> String

showList :: [OrdPlus] -> ShowS

payeeTag :: Maybe Text -> Either RegexError Query

Construct a payee tag

noteTag :: Maybe Text -> Either RegexError Query

Construct a note tag

generatedTransactionTag :: Query

Construct a generated-transaction tag

parsing

parseQuery :: Day -> Text -> Either String (Query, [QueryOpt])

A version of parseQueryList which acts on a single Text of space-separated terms.

The usual shell quoting rules are assumed. When a pattern contains whitespace, it (or the whole term including prefix) should be enclosed in single or double quotes.

>>> parseQuery nulldate "expenses:dining out"
Right (Or [Acct (RegexpCI "expenses:dining"),Acct (RegexpCI "out")],[])

>>> parseQuery nulldate "\"expenses:dining out\""
Right (Acct (RegexpCI "expenses:dining out"),[])

parseQueryList :: Day -> [Text] -> Either String (Query, [QueryOpt])

Convert a list of query expression containing to a query and zero or more query options; or return an error message if query parsing fails.

A query term is either:

1. a search pattern, which matches on one or more fields, eg:

   acct:REGEXP - match the account name with a regular expression desc:REGEXP - match the transaction description date:PERIODEXP - match the date with a period expression

The prefix indicates the field to match, or if there is no prefix account name is assumed.

1. a query option, which modifies the reporting behaviour in some way. There is currently one of these, which may appear only once:

   inacct:FULLACCTNAME

Period expressions may contain relative dates, so a reference date is required to fully parse these.

Multiple terms are combined as follows: 1. multiple account patterns are OR'd together 2. multiple description patterns are OR'd together 3. multiple status patterns are OR'd together 4. then all terms are AND'd together

simplifyQuery :: Query -> Query

filterQuery :: (Query -> Bool) -> Query -> Query

Remove query terms (or whole sub-expressions) not matching the given predicate from this query. XXX Semantics not completely clear.

accessors

queryIsNull :: Query -> Bool

Does this query match everything ?

queryIsAcct :: Query -> Bool

queryIsAmt :: Query -> Bool

queryIsDepth :: Query -> Bool

queryIsDate :: Query -> Bool

queryIsDate2 :: Query -> Bool

queryIsDateOrDate2 :: Query -> Bool

queryIsStartDateOnly :: Bool -> Query -> Bool

Does this query specify a start date and nothing else (that would filter postings prior to the date) ? When the flag is true, look for a starting secondary date instead.

queryIsSym :: Query -> Bool

queryIsReal :: Query -> Bool

queryIsStatus :: Query -> Bool

queryStartDate :: Bool -> Query -> Maybe Day

What start date (or secondary date) does this query specify, if any ? For OR expressions, use the earliest of the dates. NOT is ignored.

queryEndDate :: Bool -> Query -> Maybe Day

What end date (or secondary date) does this query specify, if any ? For OR expressions, use the latest of the dates. NOT is ignored.

queryDateSpan :: Bool -> Query -> DateSpan

What date span (or with a true argument, what secondary date span) does this query specify ? OR clauses specifying multiple spans return their union (the span enclosing all of them). AND clauses specifying multiple spans return their intersection. NOT clauses are ignored.

queryDateSpan' :: Query -> DateSpan

What date span does this query specify, treating primary and secondary dates as equivalent ? OR clauses specifying multiple spans return their union (the span enclosing all of them). AND clauses specifying multiple spans return their intersection. NOT clauses are ignored.

queryDepth :: Query -> Maybe Int

The depth limit this query specifies, if it has one

inAccount :: [QueryOpt] -> Maybe (AccountName, Bool)

The account we are currently focussed on, if any, and whether subaccounts are included. Just looks at the first query option.

inAccountQuery :: [QueryOpt] -> Maybe Query

A query for the account(s) we are currently focussed on, if any. Just looks at the first query option.

matching

matchesTransaction :: Query -> Transaction -> Bool

Does the match expression match this transaction ?

matchesDescription :: Query -> Text -> Bool

Does the query match this transaction description ? Tests desc: terms, any other terms are ignored.

matchesPayeeWIP :: Query -> Payee -> Bool

Does the query match this transaction payee ? Tests desc: (and payee: ?) terms, any other terms are ignored. XXX Currently an alias for matchDescription. I'm not sure if more is needed, There's some shenanigan with payee: and "payeeTag" to figure out.

matchesPosting :: Query -> Posting -> Bool

Does the match expression match this posting ?

Note that for account match we try both original and effective account

matchesAccount :: Query -> AccountName -> Bool

Does the match expression match this account ? A matching in: clause is also considered a match. When matching by account name pattern, if there's a regular expression error, this function calls error.

matchesMixedAmount :: Query -> MixedAmount -> Bool

matchesAmount :: Query -> Amount -> Bool

Does the match expression match this (simple) amount ?

matchesCommodity :: Query -> CommoditySymbol -> Bool

matchesTags :: Regexp -> Maybe Regexp -> [Tag] -> Bool

Does the query match the name and optionally the value of any of these tags ?

matchesPriceDirective :: Query -> PriceDirective -> Bool

Does the query match this market price ?

words'' :: [Text] -> Text -> [Text]

Quote-and-prefix-aware version of words - don't split on spaces which are inside quotes, including quotes which may have one of the specified prefixes in front, and maybe an additional not: prefix in front of that.

prefixes :: [Text]

tests

tests_Query :: TestTree