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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.client.dsl;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.List;
import java.util.Map;
/**
* Helper class for generating Vespa search queries
* https://docs.vespa.ai/en/reference/query-language-reference.html
*/
public final class Q {
private static final ObjectMapper mapper = new ObjectMapper();
static String toJson(Object o) {
try {
return mapper.writeValueAsString(o);
}
catch (JsonProcessingException e) {
throw new RuntimeException(e);
}
}
private static final Sources SELECT_ALL_FROM_SOURCES_ALL = new Sources(new Select("*"), "*");
public static Select select(String fieldName) { return new Select(fieldName);
}
public static Select select(String fieldName, String... others) {
return new Select(fieldName, others);
}
/**
* P represents "parentheses", used for generated a query in the parentheses.
*
* @param fieldName the field name
* @return the field
*/
public static Field p(String fieldName) {
return SELECT_ALL_FROM_SOURCES_ALL.where(fieldName);
}
/**
* P represents "parentheses", used for generated a query in the parentheses.
*
* @param query the query
* @return the query
*/
public static Query p(QueryChain query) {
return new Query(SELECT_ALL_FROM_SOURCES_ALL, query);
}
/**
* P represents "parentheses", used for generated a query in the parentheses.
* This method generates an empty query
*
* @return the empty query
*/
public static Query p() {
return new Query(SELECT_ALL_FROM_SOURCES_ALL);
}
/**
* Rank rank.
* https://docs.vespa.ai/en/reference/query-language-reference.html#rank
*
* @param query the query
* @param ranks the ranks
* @return the rank query
*/
public static Rank rank(Query query, QueryChain... ranks) {
return new Rank(query, ranks);
}
/**
* UI represents "userInput".
* https://docs.vespa.ai/en/reference/query-language-reference.html#userinput
*
* @param value the value
* @return the user input query
*/
public static UserInput ui(String value) {
return new UserInput(value);
}
/**
* userInput with an annotation.
* https://docs.vespa.ai/en/reference/query-language-reference.html#userinput
*
* @param a the a
* @param value the value
* @return the user input query
*/
public static UserInput ui(Annotation a, String value) {
return new UserInput(a, value);
}
/**
* A convenience method to generate userInput with default index annotation.
* https://docs.vespa.ai/en/reference/query-language-reference.html#userinput
*
* @param index the index
* @param value the value
* @return the user input query
*/
public static UserInput ui(String index, String value) {
return ui(A.defaultIndex(index), value);
}
/**
* dotPdt represents "dotProduct".
* https://docs.vespa.ai/en/reference/query-language-reference.html#dotproduct
*
* @param field the field
* @param weightedSet the weighted set
* @return the dot product query
*/
public static DotProduct dotPdt(String field, Map<String, Integer> weightedSet) {
return new DotProduct(field, weightedSet);
}
/**
* wtdSet represents "weightedSet".
* https://docs.vespa.ai/en/reference/query-language-reference.html#weightedset
*
* @param field the field
* @param weightedSet the weighted set
* @return the weighted set query
*/
public static WeightedSet wtdSet(String field, Map<String, Integer> weightedSet) {
return new WeightedSet(field, weightedSet);
}
/**
* NonEmpty non empty.
* https://docs.vespa.ai/en/reference/query-language-reference.html#nonempty
*
* @param query the query
* @return the non empty query
*/
public static NonEmpty nonEmpty(Query query) {
return new NonEmpty(query);
}
/**
* Wand wand.
* https://docs.vespa.ai/en/reference/query-language-reference.html#wand
*
* @param field the field
* @param weightedSet the weighted set
* @return the wand query
*/
public static Wand wand(String field, Map<String, Integer> weightedSet) {
return new Wand(field, weightedSet);
}
/**
* Wand wand.
* https://docs.vespa.ai/en/reference/query-language-reference.html#wand
*
* @param field the field
* @param numericRange the numeric range
* @return the wand query
*/
public static Wand wand(String field, List<List<Integer>> numericRange) {
return new Wand(field, numericRange);
}
/**
* Weakand weak and.
* https://docs.vespa.ai/en/reference/query-language-reference.html#weakand
*
* @param query the query
* @return the weak and query
*/
public static WeakAnd weakand(Query query) {
return new WeakAnd(query);
}
/**
* GeoLocation geo location
* https://docs.vespa.ai/en/reference/query-language-reference.html#geolocation
*
* @param field the field
* @param longitude longitude
* @param latitude latitude
* @param radius a string specifying the radius and it's unit
* @return the geo-location query
*/
public static GeoLocation geoLocation(String field, Double longitude, Double latitude, String radius) {
return new GeoLocation(field, longitude, latitude, radius);
}
/**
* NearestNeighbor nearest neighbor
* https://docs.vespa.ai/en/reference/query-language-reference.html#nearestneighbor
*
* @param docVectorName the vector name defined in the vespa schema
* @param queryVectorName the vector name in this query
* @return the nearest neighbor query
*/
public static NearestNeighbor nearestNeighbor(String docVectorName, String queryVectorName) {
return new NearestNeighbor(docVectorName, queryVectorName);
}
}
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