/*
 * Copyright (c) 2011-2015 EPFL DATA Laboratory
 * Copyright (c) 2014-2015 The Squall Collaboration (see NOTICE)
 *
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ch.epfl.data.squall.predicates;

import java.util.ArrayList;
import java.util.List;

import org.apache.log4j.Logger;

import ch.epfl.data.squall.expressions.ValueExpression;
import ch.epfl.data.squall.visitors.PredicateVisitor;

/* This class is syntactic sugar for complex AndPredicate
 */
public class BetweenPredicate<T extends Comparable<T>> implements Predicate {
    /**
	 * 
	 */
    private static final long serialVersionUID = 1L;

    private static Logger LOG = Logger.getLogger(BetweenPredicate.class);

    private final Predicate _and;

    public BetweenPredicate(ValueExpression<T> ve, boolean includeLower,
	    ValueExpression<T> veLower, boolean includeUpper,
	    ValueExpression<T> veUpper) {

	// set up boundaries correctly
	int opLower = ComparisonPredicate.GREATER_OP;
	if (includeLower)
	    opLower = ComparisonPredicate.NONLESS_OP;
	int opUpper = ComparisonPredicate.LESS_OP;
	if (includeUpper)
	    opUpper = ComparisonPredicate.NONGREATER_OP;

	// create syntactic sugar
	final Predicate lower = new ComparisonPredicate(opLower, ve, veLower);
	final Predicate upper = new ComparisonPredicate(opUpper, ve, veUpper);
	_and = new AndPredicate(lower, upper);
    }

    @Override
    public void accept(PredicateVisitor pv) {
	pv.visit(this);
    }

    @Override
    public List<Predicate> getInnerPredicates() {
	final List<Predicate> result = new ArrayList<Predicate>();
	result.add(_and);
	return result;
    }

    @Override
    public boolean test(List<String> tupleValues) {
	return _and.test(tupleValues);
    }

    @Override
    public boolean test(List<String> firstTupleValues,
	    List<String> secondTupleValues) {
	return _and.test(firstTupleValues, secondTupleValues);
    }

    @Override
    public String toString() {
	final StringBuilder sb = new StringBuilder();
	sb.append("BETWEEN implemented as AND: ").append(_and.toString());
	return sb.toString();
    }

}