private void verifyArguments(Operation<?> operation) { List<Expression<?>> arguments = operation.getArgs(); for (int i = 1; i < arguments.size(); ++i) { if (!(arguments.get(i) instanceof Constant<?>) && !(arguments.get(i) instanceof ParamExpression<?>) && !(arguments.get(i) instanceof PhraseElement) && !(arguments.get(i) instanceof TermElement)) { throw new IllegalArgumentException("operand was of unsupported type " + arguments.get(i).getClass().getName()); } } }
@Override public Void visit(Operation<?> expr, Void context) { handle(expr.getArgs()); return null; }
@Override public Void visit(Operation<?> expr, List<Path<?>> paths) { visit(expr.getArgs(), paths); return null; }
@Override public Path<?> visit(Operation<?> expr, Void context) { return visit(expr.getArgs()); }
@Override public Integer visit(Operation<?> expr, Void context) { int result = expr.getOperator().hashCode(); return 31 * result + expr.getArgs().hashCode(); }
@Override public Void visit(Operation<?> expr, QueryMetadata context) { visit(expr.getArgs(), context); return null; }
@Override public Set<RelationalPath<?>> visit(Operation<?> expr, Set<RelationalPath<?>> known) { for (Expression<?> arg : expr.getArgs()) { known = arg.accept(this, known); } return known; }
@Override public final boolean equals(Object o) { if (o == this) { return true; } else if (o instanceof Operation<?>) { Operation<?> op = (Operation<?>)o; return op.getOperator() == operator && op.getArgs().equals(args) && op.getType().equals(getType()); } else { return false; } }
@Override public Expression<?> visit(Operation<?> expr, @Nullable Void context) { ImmutableList<Expression<?>> args = visit(expr.getArgs()); if (args.equals(expr.getArgs())) { return expr; } else if (expr instanceof Predicate) { return new PredicateOperation((Operator)expr.getOperator(), args); } else { return new OperationImpl(expr.getType(), expr.getOperator(), args); } }
@SuppressWarnings("unchecked") private <T> Expr<?> regexToLike(Operation<T> operation) { List<Expr<?>> args = new ArrayList<Expr<?>>(); for (Expr<?> arg : operation.getArgs()){ if (!arg.getType().equals(String.class)){ args.add(arg); }else if (arg instanceof Constant){ args.add(regexToLike(arg.toString())); }else if (arg instanceof Operation){ args.add(regexToLike((Operation)arg)); }else{ args.add(arg); } } return OSimple.create( operation.getType(), operation.getOperator(), args.<Expr<?>>toArray(new Expr[args.size()])); }
@Override public Void visit(Operation<?> expr, Void context) { visitOperation(expr.getType(), expr.getOperator(), expr.getArgs()); return null; }
@Override public Set<Expression<?>> visit(Operation<?> expr, Set<Expression<?>> known) { if (expr.getOperator() == Ops.ALIAS) { known = add(known, expr.getArg(1)); } for (Expression<?> arg : expr.getArgs()) { known = arg.accept(this, known); } return known; }
@Override public String visit(Operation<?> o, Templates templates) { final Template template = templates.getTemplate(o.getOperator()); if (template != null) { final int precedence = templates.getPrecedence(o.getOperator()); final StringBuilder builder = new StringBuilder(); for (Template.Element element : template.getElements()) { final Object rv = element.convert(o.getArgs()); if (rv instanceof Expression) { if (precedence > -1 && rv instanceof Operation) { if (precedence < templates.getPrecedence(((Operation<?>)rv).getOperator())) { builder.append("("); builder.append(((Expression)rv).accept(this, templates)); builder.append(")"); continue; } } builder.append(((Expression)rv).accept(this, templates)); } else { builder.append(rv.toString()); } } return builder.toString(); } else { return "unknown operation with operator " + o.getOperator().getId() + " and args " + o.getArgs(); } }
@SuppressWarnings("unchecked") @Override public Expression<?> visit(Operation<?> expr, Context context) { final Expression<?>[] args = new Expression<?>[expr.getArgs().size()]; for (int i = 0; i < args.length; i++) { Context c = new Context(); args[i] = expr.getArg(i).accept(this, c); context.add(c); } if (context.replace) { if (expr.getType().equals(Boolean.class)) { Predicate predicate = new PredicateOperation((Operator)expr.getOperator(), ImmutableList.copyOf(args)); return !context.paths.isEmpty() ? exists(context, predicate) : predicate; } else { return new OperationImpl(expr.getType(), expr.getOperator(), ImmutableList.copyOf(args)); } } else { return expr; } }
@SuppressWarnings("rawtypes") @Override public Expression<?> visit(Operation<?> expr, Context context) { Expression<?>[] args = new Expression<?>[expr.getArgs().size()]; for (int i = 0; i < args.length; i++) { Context c = new Context(); args[i] = expr.getArg(i).accept(this, c); context.add(c); } if (context.replace) { if (expr.getType().equals(Boolean.class)) { Predicate predicate = new PredicateOperation((Operator<Boolean>)expr.getOperator(), ImmutableList.copyOf(args)); return !context.paths.isEmpty() ? exists(context, predicate) : predicate; } else { return new OperationImpl(expr.getType(), expr.getOperator(), ImmutableList.copyOf(args)); } } else { return expr; } }
List<Expression<?>> args = new ArrayList<Expression<?>>(expr.getArgs().size()); boolean leftPath = expr.getArg(0) instanceof Path<?>; boolean rightPath = expr.getArgs().size() > 1 ? expr.getArg(1) instanceof Path<?> : false; boolean leftConstant = expr.getArg(0) instanceof Constant<?>; boolean rightConstant = expr.getArgs().size() > 1 ? expr.getArg(1) instanceof Constant<?> : false; for (Expression<?> arg : expr.getArgs()) { Expression<?> transformed = transform(arg, filters); if (transformed != null) {