Package com.lucidworks.search.dsl.request.query

Class Query

    • Method Detail

      • getChildQueries

        public abstract java.util.List<Query> getChildQueries()
        Returns all the children of the query in question. The returned List is provided as a copy - changes made to it do not impact the originating Query object in any way.

      • replaceChildQuery

        public abstract boolean replaceChildQuery​(Query toReplace,
                                          Query replacement)
        Swap 'replacement' in as a replacement, if 'toReplace' is currently a child of this Query object. Because a tree of Query objects might conceivably have repeated clauses, this method is implemented to test 'toReplace' using reference-equality instead of value-equality.
        Returns:
        true if a replacement was made, false otherwise.

      • removeChildQuery

        public abstract boolean removeChildQuery​(Query toRemove)
        Remove 'toRemove', if 'toRemove' is currently a child of this Query object. Because a tree of Query objects might conceivably have repeated clauses, this method is implemented to test 'toRemove' using reference-equality instead of value-equality.
        Returns:
        true if a removal was made, false otherwise.

      • isEmptyQuery

        public abstract boolean isEmptyQuery()
        Returns:
        true if this query is now essentially "empty" (doesn't affect query logic at all) and can now be removed from the query tree. This can happen, for example, if all child queries were removed and the query logic depends on having at least one child query.