For an aggregation result i have a field (type_name2) in my mapping with a lowercased filter and a keyword tokenizer. But if I set this filter and tokenizer to the field my bucket is now empty. I have set this token and filter to ignoring spaces in words like: Fun X or Viva X. Here my mapping (in PHP):
'cars' => array(
'properties' => array(
/**'type_name2' => array(
'type' => 'string',
'fields' => array(
'raw' => array(
'type' => 'string',
'analyzer' => 'keyword'
)
)
),**/
'type_name2' => array(
'type' => 'string',
'analyzer' => 'keyword_lower'
),
'type_kw' => array(
'type' => 'float'
),
'type_hp' => array(
'type' => 'float'
)
)
),
and the custom analyzer:
'analysis' => array(
'analyzer' => array(
'keyword_lower' => array(
'tokenizer' => 'keyword',
'filter' => 'lowercase'
),
'nGram_analyzer' => array(
'type' => 'custom',
'tokenizer' => 'whitespace',
'filter' => array(
'lowercase',
'asciifolding',
'nGram_filter'
)
),
'whitespace_analyzer' => array(
'type' => 'custom',
'tokenizer' => 'whitespace',
'filter' => array(
'lowercase',
'asciifolding'
)
)
),
'filter' => array(
'nGram_filter' => array(
'type' => 'ngram',
'min_gram' => 2,
'max_gram' => 20,
'token_chars' => array(
'letter',
'digit',
'punctation',
'symbol'
)
),
)
)
but the result of type_name2 is empty:
'type_name2' =>
array (size=1)
'buckets' =>
array (size=0)
empty
Any ideas, what is wrong?
Thx and regards Stefan
