Anders Rune Jensen created ARROW-7738:
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Summary: Implement list contains predicate
Key: ARROW-7738
URL: https://issues.apache.org/jira/browse/ARROW-7738
Project: Apache Arrow
Issue Type: Improvement
Components: JavaScript
Affects Versions: 0.15.1
Reporter: Anders Rune Jensen
As far as I can see there is no way to check if a list contains a specific
element.
My code is as follows:
{code:java}
var all = arrow.Table.new([
arrow.DateVector.from(dates),
arrow.Int32Vector.from(flumeseqs),
arrow.Utf8Vector.from(keys),
arrow.Vector.from({ values: authors, type: new arrow.Dictionary(new
arrow.Utf8(), new arrow.Int32()) }),
arrow.Int32Vector.from(sequences),
arrow.Vector.from({ values: types, type: new arrow.Dictionary(new
arrow.Utf8(), new arrow.Int32()) }),
arrow.Vector.from({ values: links, type: new arrow.List(listChild) }),
], ["date", "flumeseq", "key", "author", "sequence", "type", "links"])
{code}
And I want to get all the items that has a specific element in the links
section.
So something like:
{code:java}
var q2 = Array.from(
all.filter(
arrow.predicate.col('links').contains('%GcvjVk+NLsjOB5Vd+vceGXEOeYmHoRA6lgXVJzPuMxw=.sha256')))
{code}
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