// TODO: log make the FieldQuery ensure that there is no more than one instead of similarity
// constraint per query
List<String> fields = new ArrayList<String>();
fields.add(fieldConstraint.getKey());
SimilarityConstraint simConstraint = (SimilarityConstraint) fieldConstraint.getValue();
IndexValue indexValue = indexValueFactory.createIndexValue(simConstraint.getContext());
fields.addAll(simConstraint.getAdditionalFields());
if(!similarityConstraintPresent){
similarityConstraintPresent = true; //similarity constraint present
//add the constraint to the query
query.setQueryType(MLT_QUERY_TYPE);
query.set(MATCH_INCLUDE, false);
query.set(MIN_DOC_FREQ, 1);
query.set(MIN_TERM_FREQ, 1);
query.set(INTERESTING_TERMS, "details");
List<String> indexFields = new ArrayList<String>();
for(String field : fields){
IndexField indexField = new IndexField(Collections.singletonList(field),
IndexDataTypeEnum.TXT.getIndexType());
indexFields.addAll(fieldMapper.getFieldNames(indexField));
}
query.set(SIMILARITY_FIELDS, indexFields.toArray(new String[fields.size()]));
query.set(STREAM_BODY, indexValue.getValue());
processedFieldConstraints.put(fieldConstraint.getKey(), fieldConstraint.getValue());
} else { //similarity constraint already present -> ignore further
//NOTE: users are informed about that by NOT including further
// similarity constraints in the query included in the
// response
log.warn("The parsed FieldQuery contains multiple Similarity constraints." +
"However only a single one can be supported per query. Because of " +
"this all further Similarity constraints will be ignored!");
log.warn("Ignore SimilarityConstraint:");
log.warn(" > Field : {}",fieldConstraint.getKey());
log.warn(" > Context : {}",simConstraint.getContext());
log.warn(" > Add Fields : {}",simConstraint.getAdditionalFields());
}
} else {
IndexConstraint indexConstraint = createIndexConstraint(fieldConstraint);
if (indexConstraint.isInvalid()) {
log.warn("Unable to create IndexConstraint for Constraint {} (type: {}) and Field {} (Reosens: {})",