Package graphql.language

Class SelectionSet

    • Field Detail

      • CHILD_SELECTIONS

        public static final java.lang.String CHILD_SELECTIONS
        See Also:
        Constant Field Values

    • Constructor Detail

      • SelectionSet

        protected SelectionSet​(java.util.Collection<? extends Selection> selections,
                       SourceLocation sourceLocation,
                       java.util.List<Comment> comments,
                       IgnoredChars ignoredChars,
                       java.util.Map<java.lang.String,​java.lang.String> additionalData)

      • SelectionSet

        public SelectionSet​(java.util.Collection<? extends Selection> selections)
        alternative to using a Builder for convenience
        Parameters:
        selections - the list of selection in this selection set

    • Method Detail

      • getSelections

        public java.util.List<Selection> getSelections()

      • getSelectionsOfType

        public <T extends Selection> java.util.List<T> getSelectionsOfType​(java.lang.Class<T> selectionClass)
        Returns a list of selections of the specific type. It uses Class.isAssignableFrom(Class) for the test
        Type Parameters:
        T - the type of selection
        Parameters:
        selectionClass - the selection class
        Returns:
        a list of selections of that class or empty list

      • getChildren

        public java.util.List<Node> getChildren()
        Returns:
        a list of the children of this node

      • getNamedChildren

        public NodeChildrenContainer getNamedChildren()
        Description copied from interface: Node
        Alternative to Node.getChildren() where the children are not all in one list regardless of type but grouped by name/type of the child.
        Returns:
        a container of the child nodes

      • withNewChildren

        public SelectionSet withNewChildren​(NodeChildrenContainer newChildren)
        Description copied from interface: Node
        Replaces the specified children and returns a new Node.
        Parameters:
        newChildren - must be empty for Nodes without children
        Returns:
        a new node

      • isEqualTo

        public boolean isEqualTo​(Node o)
        Description copied from interface: Node
        Compares just the content and not the children.
        Parameters:
        o - the other node to compare to
        Returns:
        isEqualTo

      • deepCopy

        public SelectionSet deepCopy()
        Returns:
        a deep copy of this node

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object

      • accept

        public TraversalControl accept​(TraverserContext<Node> context,
                               NodeVisitor visitor)
        Description copied from interface: Node
        Double-dispatch entry point. A node receives a Visitor instance and then calls a method on a Visitor that corresponds to a actual type of this Node. This binding however happens at the compile time and therefore it allows to save on rather expensive reflection based instanceOf check when decision based on the actual type of Node is needed, which happens redundantly during traversing AST. Additional advantage of this pattern is to decouple tree traversal mechanism from the code that needs to be executed when traversal "visits" a particular Node in the tree. This leads to a better code re-usability and maintainability.
        Parameters:
        context - TraverserContext bound to this Node object
        visitor - Visitor instance that performs actual processing on the Nodes(s)
        Returns:
        Result of Visitor's operation. Note! Visitor's operation might return special results to control traversal process.