[SOLR-5546] Add the aggregate function in the faceted function

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.5.1
• Component/s: contrib - Clustering
• Assignee: Unassigned
• Reporter: Raintung Li
• Created: 11/Dec/13 09:39
• Updated: 20/Dec/13 09:07

Description

Faceted only provide the count for different type in one field, sometimes we will want to aggregate the other field in the same faceted not only count.

The API maybe can use:
Date Query:
facet=true&facet.date=tTransDate&facet.date.start=NOW/MONTH-12MONTHS&facet.date.end=NOW&facet.date.gap=%2B1MONTH&f.tTransDate.facet.sum.field=amountMoney&f.tTransDate.facet.max.field=amountMoney

Query:
facet=true&facet.query=amountMoney:[*+TO+500]&facet.query=amountMoney:[500+TO+*]&f.query.facet.sum.field=amountMoney

Range:
facet.range=amountMoney&f.amountMoney.facet.range.start=0&f.amountMoney.facet.range.end=1000&f.amountMoney.facet.range.gap=100&f.amountMoney.facet.sum.field=amountMoney

Field:
facet=true&facet.field=amountMoney&f.amountMoney.facet.sum.field=amountMoney

facetd.rt=sum(field1),max(field2),count

that means:
Response XML will be

<lst name="count">
<int name="2007-08-11T00:00:00.000Z">1</int>
<int name="2007-08-12T00:00:00.000Z">5</int>
<int name="2007-08-13T00:00:00.000Z">3</int>
<int name="2007-08-14T00:00:00.000Z">7</int>
<int name="2007-08-15T00:00:00.000Z">2</int>
<int name="2007-08-16T00:00:00.000Z">16</int>
</lst>
<lst name="sum.field1">
<int name="2007-08-11T00:00:00.000Z">1</int>
<int name="2007-08-12T00:00:00.000Z">5</int>
<int name="2007-08-13T00:00:00.000Z">3</int>
<int name="2007-08-14T00:00:00.000Z">7</int>
<int name="2007-08-15T00:00:00.000Z">2</int>
<int name="2007-08-16T00:00:00.000Z">16</int>
</lst>
<lst name="max.field2">
<int name="2007-08-11T00:00:00.000Z">1</int>
<int name="2007-08-12T00:00:00.000Z">5</int>
<int name="2007-08-13T00:00:00.000Z">3</int>
<int name="2007-08-14T00:00:00.000Z">7</int>
<int name="2007-08-15T00:00:00.000Z">2</int>
<int name="2007-08-16T00:00:00.000Z">16</int>
</lst>