On 15/04/2021 15:31, Daniele Nicolodi wrote:
> Hello,
>
> I am writing a tool that should operate on a selection of entries from a
> Benacount ledger. I could come up with my own little DSL to do the
> selection, but we already have BQL, thus I think reusing it would be nice.
Replying to myself. There is not a ready made function, but it is easy
to put together one. For example:
from beancount.query import query_compile
from beancount.query import query_env
from beancount.query import query_execute
from beancount.query import query_parser
def filter_entries(entries, options, what):
env_targets = query_env.TargetsEnvironment()
env_entries = query_env.FilterEntriesEnvironment()
env_postings = query_env.FilterPostingsEnvironment()
# Parse the BQL statement.
parser = query_parser.Parser()
statement = parser.parse(f'PRINT FROM {what:}')
# Compile the BQL statement.
compiled = query_compile.compile(statement,
env_targets, env_postings, env_entries)
# Execute only the filtering part of the BQL statement.
context = query_execute.create_row_context(entries, options)
entries = query_execute.filter_entries(compiled.c_from,
entries, options, context)
return entries
Cheers,
Dan
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