Apache Solr Reference Guide Covering Apache Solr 6.0

dist
docfreq(field,val)
exists
field
hsin
Return the distance between two
vectors (points) in an n-dimensional
space. Takes in the power, plus two or
more ValueSource instances and
calculates the distances between the
two vectors. Each ValueSource must
be a number. There must be an even
number of ValueSource instances
passed in and the method assumes
that the first half represent the first
vector and the second half represent
the second vector.
Returns the number of documents that
contain the term in the field. This is a
constant (the same value for all
documents in the index).
You can quote the term if it's more
complex, or do parameter substitution
for the term value.
Returns TRUE if any member of the
field exists.
Returns the numeric docValues or
indexed value of the field with the
specified name. In it's simplest (single
argument) form, this function can only
be used on single valued fields, and
can be called using the name of the
field as a string, or for most
conventional field names simply use
the field name by itself with out using
the field(...) syntax.
When using docValues, an optional
2nd argument can be specified to
select the " min" or " max" value of
multivalued fields.
0 is returned for documents without a
value in the field.
The Haversine distance calculates the
distance between two points on a
sphere when traveling along the
sphere. The values must be in radians.
hsin also take a Boolean argument to
specify whether the function should
convert its output to radians.
dist(2, x, y, 0, 0): calculates the
Euclidean distance between (0,0) and (x,y) for
each document
dist(1, x, y, 0, 0): calculates the
Manhattan (taxicab) distance between (0,0) and
(x,y) for each document
dist(2, x,y,z,0,0,0): Euclidean distance
between (0,0,0) and (x,y,z) for each document.
dist(1,x,y,z,e,f,g): Manhattan distance
between (x,y,z) and (e,f,g) where each letter is a
field name
docfreq(text,'solr')
...&defType=func
&q=docfreq(text,$myterm)
&myterm=solr
exists(author) returns TRUE for any
document has a value in the "author" field.
exists(query(price:5.00)) returns TRUE
if "price" matches "5.00".
These 3 examples are all equivalent:
myFloatFieldName
field(myFloatFieldName)
field("myFloatFieldName")
The last form is convinient when your field name
is atypical:
field("my complex float
fieldName")
For multivalued docValues fields:
field(myMultiValuedFloatField,min)
field(myMultiValuedFloatField,max)
hsin(2, true, x, y, 0, 0)
Apache Solr Reference Guide 6.0
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