/** * Checks if the predicates are successful for the specified item. * * @param it item to be checked * @param qc query context * @return result of check * @throws QueryException query exception */ protected final boolean preds(final Item it, final QueryContext qc) throws QueryException { if (preds.length == 0) return true; // set context value and position final Value cv = qc.value; try { if (qc.scoring) { double s = 0; for (final Expr p : preds) { qc.value = it; final Item i = p.test(qc, info); if (i == null) return false; s += i.score(); } it.score(Scoring.avg(s, preds.length)); } else { for (final Expr p : preds) { qc.value = it; if (p.test(qc, info) == null) return false; } } return true; } finally { qc.value = cv; } }
@Override public Value value(final QueryContext ctx) throws QueryException { final int o = (int) ctx.resources.output.size(); final Updates updates = ctx.resources.updates(); final ContextModifier tmp = updates.mod; final TransformModifier pu = new TransformModifier(); updates.mod = pu; try { for (final Let fo : copies) { final Iter ir = ctx.iter(fo.expr); Item i = ir.next(); if (!(i instanceof ANode) || ir.next() != null) throw UPCOPYMULT.get(fo.info, fo.var.name); // copy node to main memory data instance i = ((ANode) i).dbCopy(ctx.context.options); // add resulting node to variable ctx.set(fo.var, i, info); pu.addData(i.data()); } final Value v = ctx.value(expr[0]); if (!v.isEmpty()) throw BASEX_MOD.get(info); updates.prepare(); updates.apply(); return ctx.value(expr[1]); } finally { ctx.resources.output.size(o); updates.mod = tmp; } }
/** * Checks two keys for equality. * * @param its1 first keys * @param its2 second keys * @param coll collations * @return {@code true} if the compare as equal, {@code false} otherwise * @throws QueryException query exception */ private boolean eq(final Item[] its1, final Item[] its2, final Collation[] coll) throws QueryException { final int il = its1.length; for (int i = 0; i < il; i++) { final Item it1 = its1[i], it2 = its2[i]; if (it1 == null ^ it2 == null || it1 != null && !it1.equiv(it2, coll[i], info)) return false; } return true; }
/** * Compares results. * * @param expected expected result * @param returned returned result * @throws Exception exception */ private static void compare(final ItemList expected, final ItemList returned) throws Exception { // Compare response with expected result assertEquals("Different number of results", expected.size(), returned.size()); final long es = expected.size(); for (int e = 0; e < es; e++) { final Item exp = expected.get(e), ret = returned.get(e); if (!new DeepEqual().equal(exp, ret)) { final TokenBuilder tb = new TokenBuilder("Result ").addLong(e).add(" differs:\nReturned: "); tb.addExt(ret.serialize()).add("\nExpected: ").addExt(exp.serialize()); fail(tb.toString()); } } }
@Override public final Item atomItem(final QueryContext qc, final InputInfo ii) throws QueryException { final Item it1 = item(qc, info); return it1 == null ? null : it1.atomItem(info); }
/** * Checks if the specified item is a string or binary item. * * @param it item to be checked * @return byte array * @throws QueryException query exception */ protected final byte[] toBytes(final Item it) throws QueryException { if (checkNoEmpty(it).type.isStringOrUntyped()) return it.string(info); if (it instanceof Bin) return ((Bin) it).binary(info); throw STRBIN_X_X.get(info, it.type, it); }
/** * Checks if the specified item yields a node or item. Returns the item or throws an exception. * * @param it item to be checked (can be {@code null}) * @return node or atomized item * @throws QueryException query exception */ protected final Item toNodeOrAtomItem(final Item it) throws QueryException { return it == null || it instanceof ANode ? it : it.atomItem(info); }
@Override public Iter iter(final QueryContext qc) throws QueryException { final Item it = item(qc, info); return it != null ? it.iter() : Empty.ITER; }
/** * Checks if the specified item is a number. Returns a token representation or throws an * exception. * * @param it item to be checked * @return number * @throws QueryException query exception */ protected final long toLong(final Item it) throws QueryException { final Type ip = checkNoEmpty(it, AtomType.ITR).type; if (ip.instanceOf(AtomType.ITR) || ip.isUntyped()) return it.itr(info); throw castError(it, AtomType.ITR, info); }
/** * Checks if the specified expression yields a float. Returns the float or throws an exception. * * @param ex expression to be evaluated * @param qc query context * @return float * @throws QueryException query exception */ protected final float toFloat(final Expr ex, final QueryContext qc) throws QueryException { final Item it = ex.atomItem(qc, info); if (checkNoEmpty(it, AtomType.FLT).type.isNumberOrUntyped()) return it.flt(info); throw numberError(this, it); }
/** * Checks if the specified, non-empty item is a double. Returns the double or throws an exception. * * @param it item to be checked * @return number * @throws QueryException query exception */ private ANum toNumber(final Item it) throws QueryException { if (it.type.isUntyped()) return Dbl.get(it.dbl(info)); if (it instanceof ANum) return (ANum) it; throw numberError(this, it); }
/** * Checks if the specified item is a double. Returns the double or throws an exception. * * @param it item * @return double * @throws QueryException query exception */ protected final double toDouble(final Item it) throws QueryException { if (checkNoEmpty(it, AtomType.DBL).type.isNumberOrUntyped()) return it.dbl(info); throw numberError(this, it); }
/** * Checks if the specified item is a boolean. Returns the boolean or throws an exception. * * @param it item be checked * @return boolean * @throws QueryException query exception */ protected final boolean toBoolean(final Item it) throws QueryException { final Type ip = checkNoEmpty(it, AtomType.BLN).type; if (ip == AtomType.BLN) return it.bool(info); if (ip.isUntyped()) return Bln.parse(it.string(info), info); throw castError(it, AtomType.BLN, info); }
/** * Checks if the specified non-empty item is a string. Returns its value as token or throws an * exception. * * @param it item to be checked * @return token * @throws QueryException query exception */ protected final byte[] toToken(final Item it) throws QueryException { final Type ip = it.type; if (ip.isStringOrUntyped()) return it.string(info); throw it instanceof FItem ? FIATOM_X.get(info, it.type) : castError(it, AtomType.STR, info); }
@Override public final Item test(final QueryContext qc, final InputInfo ii) throws QueryException { final Item it = ebv(qc, info); return (it instanceof ANum ? it.dbl(info) == qc.pos : it.bool(info)) ? it : null; }