Package javax.jdo.query

Interface MapExpression<T extends Map<K,​V>,​K,​V>

  • Type Parameters:
    T - Java type being represented here
    K - Key type of the map being represented here
    V - Value type of the map being represented here
    All Superinterfaces:
    Expression<T>
    public interface MapExpression<T extends Map<K,​V>,​K,​V>
extends Expression<T>
    Representation of a map in a query.

    • Method Detail

      • get

        Expression<V> get​(Expression<K> expr)
        Method returning the value expression for a specified key expression.
        Parameters:
        expr - Key expression
        Returns:
        The value expression

      • get

        Expression<V> get​(K key)
        Method returning the value expression for a specified key.
        Parameters:
        key - Key
        Returns:
        The value expression

      • containsKey

        BooleanExpression containsKey​(Expression<K> expr)
        Method returning whether the specified key expression is contained in this map.
        Parameters:
        expr - The key expression
        Returns:
        Whether it is contained here

      • containsKey

        BooleanExpression containsKey​(K key)
        Method returning whether the specified key is contained in this map.
        Parameters:
        key - The key
        Returns:
        Whether it is contained here

      • containsValue

        BooleanExpression containsValue​(Expression<V> expr)
        Method returning whether the specified value expression is contained in this map.
        Parameters:
        expr - The value expression
        Returns:
        Whether it is contained here

      • containsValue

        BooleanExpression containsValue​(V value)
        Method returning whether the specified value is contained in this map.
        Parameters:
        value - The value
        Returns:
        Whether it is contained here

      • containsEntry

        BooleanExpression containsEntry​(Expression<Map.Entry<K,​V>> expr)
        Method returning whether the specified entry expression is contained in this map.
        Parameters:
        expr - The entry expression
        Returns:
        Whether it is contained here

      • containsEntry

        BooleanExpression containsEntry​(Map.Entry<K,​V> entry)
        Method returning whether the specified entry is contained in this map.
        Parameters:
        entry - The entry expression
        Returns:
        Whether it is contained here

      • isEmpty

        BooleanExpression isEmpty()
        Method returning whether the map is empty.
        Returns:
        Whether it is empty