Overview
The FieldLength class is used to obtain the number of terms after the analysis of a field in an index.
Functions
Function | Description |
FieldLength create(OpsScorerInitParams params, CString indexName, CString fieldName) | Creates a FieldLength object. |
double evaluate(OpsScoreParams params) | Returns the number of terms after the analysis of a field in an index. |
Function details
FieldLength create(OpsScorerInitParams params, CString indexName, CString fieldName)
Creates a FieldLength object.
Parameter: params: the parameters that are used for score calculation. For more information, see OpsScoreParams. indexName: the name of an index. The name must be a constant. fieldName: the name of a field in the specified index. The name must be a constant. The field must be of the TEXT or SHORT_TEXT type. The analyzer can be the general analyzer for Chinese, a custom analyzer, the single character analyzer for Chinese, the analyzer for English, or the analyzer for fuzzy searches.
double evaluate(OpsScoreParams params)
Returns the number of terms after the analysis of a field in an index. Parameter: params: the parameters that are used for score calculation. For more information, see OpsScoreParams. Sample code:
package users.scorer;
import com.aliyun.opensearch.cava.framework.OpsScoreParams;
import com.aliyun.opensearch.cava.framework.OpsScorerInitParams;
import com.aliyun.opensearch.cava.framework.OpsRequest;
import com.aliyun.opensearch.cava.framework.OpsDoc;
import com.aliyun.opensearch.cava.features.similarity.fieldmatch.FieldLength;
class BasicSimilarityScorer {
FieldLength _fieldLength;
boolean init(OpsScorerInitParams params) {
_fieldLength = FieldLength.create(params, "text_index1", "text_field");
return true;
}
double score(OpsScoreParams params) {
return _fieldLength.evaluate(params);
}
}