org.datanucleus.query.typesafe
Interface MapExpression<T extends java.util.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>

All Known Implementing Classes:

MapExpressionImpl

public interface MapExpression<T extends java.util.Map<K,V>,K,V>
extends Expression<T>

Representation of a map in a query.

Method Summary

BooleanExpression	containsEntry(Expression expr) Method returning whether the specified entry expression is contained in this map.
BooleanExpression	containsEntry(java.util.Map.Entry<K,V> entry) Method returning whether the specified entry is contained in this map.
BooleanExpression	containsKey(Expression expr) Method returning whether the specified key expression is contained in this map.
BooleanExpression	containsKey(K key) Method returning whether the specified key is contained in this map.
BooleanExpression	containsValue(Expression expr) Method returning whether the specified value expression is contained in this map.
BooleanExpression	containsValue(V value) Method returning whether the specified value is contained in this map.
BooleanExpression	isEmpty() Method returning whether the map is empty.
NumericExpression<java.lang.Integer>	size() Method returning an expression for the size of the map

Methods inherited from interface org.datanucleus.query.typesafe.Expression

cast, count, countDistinct, eq, eq, instanceOf, ne, ne

Method Detail

containsKey

BooleanExpression containsKey(Expression 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 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 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(java.util.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

size

NumericExpression<java.lang.Integer> size()

Method returning an expression for the size of the map

Returns:

The size