@Test
public void expressions() throws Exception {
Map<Class<?>, Object> args = Maps.newHashMap();
args.put(Object.class, "obj");
args.put(BeanPath.class, new EntityPathBase<Object>(Object.class, "obj"));
args.put(Class.class, Integer.class);
args.put(Class[].class, new Class<?>[] {Object.class, Object.class});
args.put(java.util.Date.class, new java.util.Date(0));
args.put(java.sql.Date.class, new java.sql.Date(0));
args.put(java.sql.Time.class, new java.sql.Time(0));
args.put(java.sql.Timestamp.class, new java.sql.Timestamp(0));
args.put(Expression.class, Expressions.enumPath(Gender.class, "e"));
args.put(
Expression[].class,
new Expression<?>[] {Expressions.enumPath(Gender.class, "e"), Expressions.stringPath("s")});
args.put(FactoryExpression.class, Projections.tuple(Expressions.stringPath("str")));
args.put(GroupExpression.class, GroupBy.avg(Expressions.numberPath(Integer.class, "num")));
args.put(Number.class, 1);
args.put(Operator.class, Ops.AND);
args.put(Path.class, Expressions.stringPath("str"));
args.put(PathBuilderValidator.class, PathBuilderValidator.DEFAULT);
args.put(PathMetadata.class, PathMetadataFactory.forVariable("obj"));
args.put(PathInits.class, PathInits.DEFAULT);
args.put(Predicate.class, Expressions.path(Object.class, "obj").isNull());
args.put(QueryMetadata.class, new DefaultQueryMetadata());
args.put(String.class, "obj");
Reflections reflections = new Reflections();
Set<Class<? extends Expression>> types = reflections.getSubTypesOf(Expression.class);
for (Class<?> type : types) {
if (!type.isInterface()
&& !type.isMemberClass()
&& !Modifier.isAbstract(type.getModifiers())) {
for (Constructor<?> c : type.getConstructors()) {
Object[] parameters = new Object[c.getParameterTypes().length];
for (int i = 0; i < c.getParameterTypes().length; i++) {
parameters[i] =
Objects.requireNonNull(
args.get(c.getParameterTypes()[i]), c.getParameterTypes()[i].getName());
}
c.setAccessible(true);
Object o = c.newInstance(parameters);
assertEquals(o, Serialization.serialize(o));
}
}
}
}
@Test
public void Various3() {
NumberPath<Integer> num = Expressions.numberPath(Integer.class, "num");
assertEquals(
Arrays.asList(1, 2, 3), from(num, 1, 2, 3, 4).where(num.lt(4)).select(num).fetch());
}
/**
* Create a new variable path
*
* @param arg alias
* @param <D>
* @return expression
*/
@SuppressWarnings("unchecked")
public static <D extends Number & Comparable<D>> NumberPath<D> var(D arg) {
return Expressions.numberPath(
(Class<D>) arg.getClass(), "var" + arg.getClass().getSimpleName() + arg);
}