Package org.apache.cayenne.query

Class PrefetchSelectQuery<T>

    • Field Detail

      • prefetchPath

        protected String prefetchPath
        The relationship path from root objects to the objects being prefetched.

      • lastPrefetchHint

        protected ObjRelationship lastPrefetchHint
        Stores the last ObjRelationship in the prefetch path.

    • Constructor Detail

      • PrefetchSelectQuery

        public PrefetchSelectQuery​(String prefetchPath,
                           ObjRelationship lastPrefetchHint)
        Creates a new disjoint prefetch select query.
        Since:
        3.1

    • Method Detail

      • getPrefetchPath

        public String getPrefetchPath()
        Returns the prefetchPath.

      • setPrefetchPath

        public void setPrefetchPath​(String prefetchPath)
        Sets the prefetchPath.
        Parameters:
        prefetchPath - The prefetchPath to set

      • setPrefetchTree

        public void setPrefetchTree​(PrefetchTreeNode prefetch)
        Clean set of the prefetch tree without any merge with existing nodes.
        Parameters:
        prefetch - prefetch tree
        Since:
        4.2

      • getLastPrefetchHint

        public ObjRelationship getLastPrefetchHint()
        Returns last incoming ObjRelationship in the prefetch relationship chain.
        Since:
        1.1

      • setLastPrefetchHint

        public void setLastPrefetchHint​(ObjRelationship relationship)
        Since:
        1.1

      • addResultPath

        public void addResultPath​(String path)
        Configures an "extra" path that will resolve to an extra column (or columns) in the result set.
        Parameters:
        path - A valid path expression. E.g. "abc" or "db:ABC" or "abc.xyz".
        Since:
        1.2

      • removeResultPath

        public void removeResultPath​(String path)
        Removes an extra result path. Note that this method doesn't check for expression invariants, as it doesn't have a proper context to do so. E.g. for the purpose of this method "db:ARTIST_NAME" and "obj:artistName" are not the same, though both will resolve to the same column name.

      • getResultPaths

        public Collection<String> getResultPaths()
        Returns extra result paths.
        Since:
        1.2