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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.client.dsl;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* EndQuery contains a 'Query'
* This object holds timeout, offset, limit, group and orderBy information before the semicolon
*/
public class EndQuery {
final QueryChain queryChain;
final Map<String, Integer> map = new LinkedHashMap<>();
final List<Object[]> order = new ArrayList<>();
private String groupQueryStr;
EndQuery(QueryChain queryChain) {
this.queryChain = queryChain;
// make sure the order of limit, offset and timeout
this.map.put("limit", null);
this.map.put("offset", null);
this.map.put("timeout", null);
}
EndQuery setTimeout(Integer timeout) {
map.put("timeout", timeout);
return this;
}
EndQuery setOffset(int offset) {
map.put("offset", offset);
return this;
}
EndQuery setLimit(int limit) {
map.put("limit", limit);
return this;
}
/**
* Offset.
* https://docs.vespa.ai/en/reference/query-language-reference.html#limit-offset
*
* @param offset the offset
* @return the end query
*/
public EndQuery offset(int offset) {
return this.setOffset(offset);
}
/**
* Timeout.
* https://docs.vespa.ai/en/reference/query-language-reference.html#timeout
*
* @param timeout the timeout
* @return the end query
*/
public EndQuery timeout(int timeout) {
return this.setTimeout(timeout);
}
/**
* Limit.
* https://docs.vespa.ai/en/reference/query-language-reference.html#limit-offset
*
* @param limit the limit
* @return the end query
*/
public EndQuery limit(int limit) {
return this.setLimit(limit);
}
/**
* Calls fix()
*
* @deprecated use {link #fix}
*/
@Deprecated // TODO: Remove on Vespa 9
public FixedQuery semicolon() { return fix(); }
/** Returns a fixed query containing this. */
public FixedQuery fix() {
return new FixedQuery(this);
}
/** Calls fix().build() */
public String build() { return fix().build(); }
/**
* Group.
* https://docs.vespa.ai/en/reference/query-language-reference.html#grouping
*
* @param group the group
* @return the end query
*/
public EndQuery group(Group group) {
return group(group.toString());
}
/**
* Group.
* https://docs.vespa.ai/en/reference/query-language-reference.html#grouping
*
* @param groupQueryStr the group str
* @return the end query
*/
public EndQuery group(String groupQueryStr) {
this.groupQueryStr = groupQueryStr;
return this;
}
/**
* Order by asc.
* https://docs.vespa.ai/en/reference/query-language-reference.html#order-by
*
* @param annotation the annotation
* @param fieldName the field name
* @return the end query
*/
public EndQuery orderByAsc(Annotation annotation, String fieldName) {
order.add(new Object[]{annotation, fieldName, "asc"});
return this;
}
/**
* Order by asc.
* https://docs.vespa.ai/en/reference/query-language-reference.html#order-by
*
* @param fieldName the field name
* @return the end query
*/
public EndQuery orderByAsc(String fieldName) {
order.add(new Object[]{A.empty(), fieldName, "asc"});
return this;
}
/**
* Order by desc.
* https://docs.vespa.ai/en/reference/query-language-reference.html#order-by
*
* @param annotation the annotation
* @param fieldName the field name
* @return the end query
*/
public EndQuery orderByDesc(Annotation annotation, String fieldName) {
order.add(new Object[]{annotation, fieldName, "desc"});
return this;
}
/**
* Order by desc.
* https://docs.vespa.ai/en/reference/query-language-reference.html#order-by
*
* @param fieldName the field name
* @return the end query
*/
public EndQuery orderByDesc(String fieldName) {
order.add(new Object[]{A.empty(), fieldName, "desc"});
return this;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
String orderStr = order.stream().map(array -> A.empty().equals(array[0])
? Text.format("%s %s", array[1], array[2])
: Text.format("%s%s %s", array[0], array[1], array[2]))
.collect(Collectors.joining(", "));
String others = map.entrySet().stream()
.filter(entry -> entry.getValue() != null)
.map(entry -> entry.getKey() + " " + entry.getValue())
.collect(Collectors.joining(" "));
if (orderStr.isEmpty()) {
sb.append(others.isEmpty() ? "" : others);
} else if (others.isEmpty()) {
sb.append("order by ").append(orderStr);
} else {
sb.append("order by ").append(orderStr).append(" ").append(others);
}
if (groupQueryStr != null) {
sb.append("| ").append(groupQueryStr);
}
return sb.toString();
}
}
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