public void testSlice() {
assertTrue(buf.capacity() > 5);
buf.position(1);
buf.limit(buf.capacity() - 1);
DoubleBuffer slice = buf.slice();
assertEquals(buf.isReadOnly(), slice.isReadOnly());
assertEquals(buf.isDirect(), slice.isDirect());
assertEquals(buf.order(), slice.order());
assertEquals(slice.position(), 0);
assertEquals(slice.limit(), buf.remaining());
assertEquals(slice.capacity(), buf.remaining());
try {
slice.reset();
fail("Should throw Exception"); // $NON-NLS-1$
} catch (InvalidMarkException e) {
// expected
}
// slice share the same content with buf
// FIXME:
if (!slice.isReadOnly()) {
loadTestData1(slice);
assertContentLikeTestData1(buf, 1, 0, slice.capacity());
buf.put(2, 500);
assertEquals(slice.get(1), 500, 0.0);
}
}
@NotNull
public static IndexedCollection<Double> ofDouble(@NotNull ByteBuffer byteBuffer) {
int magic = byteBuffer.getInt();
if (magic != MAGIC) {
throw new IllegalArgumentException("bad magic number");
}
int version = byteBuffer.getInt();
if (version != VERSION) {
throw new IllegalArgumentException("bad version number");
}
int size = byteBuffer.getInt();
DoubleBuffer values = byteBuffer.asDoubleBuffer();
values.limit(size);
byteBuffer.position(byteBuffer.position() + size * Integer.BYTES);
return new DoubleBufferCollection(values.slice());
}