com.epam.ta.reportportal.database.search.FilterRules.java Source code

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Here is the source code for com.epam.ta.reportportal.database.search.FilterRules.java

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/*
 * Copyright 2016 EPAM Systems
 * 
 * 
 * This file is part of EPAM Report Portal.
 * https://github.com/reportportal/commons-dao
 * 
 * Report Portal is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Report Portal is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Report Portal.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.epam.ta.reportportal.database.search;

import java.time.*;
import java.util.Collection;
import java.util.Date;
import java.util.function.Predicate;

import org.apache.commons.lang3.math.NumberUtils;

/**
 * Set of predicates which may be applied to the query builder and filter
 * conditions<br>
 * 
 * @see com.epam.ta.reportportal.database.search.Condition
 * @see com.epam.ta.reportportal.database.search.QueryBuilder
 * 
 * @author Andrei Varabyeu
 * 
 */
public class FilterRules {

    private FilterRules() {

    }

    /**
     * Accepts only strings as data type
     * 
     * @return Predicate
     */
    public static Predicate<CriteriaHolder> filterForString() {
        return filter -> String.class.equals(filter.getDataType());
    }

    /**
     * Accepts only strings as data type
     * 
     * @return Predicate
     */
    public static Predicate<CriteriaHolder> filterForBoolean() {
        return filter -> boolean.class.equals(filter.getDataType())
                || Boolean.class.isAssignableFrom(filter.getDataType());
    }

    /**
     * Accepts numbers only numbers as data type
     * 
     * @return Predicate
     */
    public static Predicate<CriteriaHolder> filterForNumbers() {
        return filter -> Number.class.isAssignableFrom(filter.getDataType());
    }

    /**
     * Accepts collections as data type
     * 
     * @return Predicate
     */
    public static Predicate<CriteriaHolder> filterForCollections() {
        return filter -> Collection.class.isAssignableFrom(filter.getDataType());
    }

    /**
     * Accepts numbers only numbers as data type
     * 
     * @return Predicate
     */
    public static <T extends Number> Predicate<T> numberIsPositive() {
        return number -> number.longValue() >= 0;
    }

    /**
     * Accepts numbers only
     * 
     * @return Predicate
     */
    public static Predicate<String> number() {
        return NumberUtils::isCreatable;
    }

    /**
     * Accepts numbers only
     * 
     * @return Predicate
     */
    public static Predicate<String> dateInMillis() {
        return object -> {
            /*
             * May be rewritten in future. I suppose date as long value
             */
            return number().test(object);
        };
    }

    /**
     * Accepts only dates as data type
     * 
     * @return Predicate
     */
    public static Predicate<CriteriaHolder> filterForDates() {
        return filter -> Date.class.isAssignableFrom(filter.getDataType());
    }

    /**
     * Count of values provided to filter
     * 
     * @return Predicate
     */
    public static Predicate<String[]> countOfValues(final int count) {
        return values -> count == values.length;
    }

    public static Predicate<String> zoneOffset() {
        return value -> {
            if (value == null)
                return false;
            try {
                ZoneOffset.of(value);
            } catch (DateTimeException e) {
                return false;
            }
            return true;
        };
    }

    public static Predicate<String> timeStamp() {
        return value -> {
            if (value == null) {
                return false;
            }
            try {
                long offset = Long.parseLong(value);
                LocalDateTime.of(LocalDate.now(), LocalTime.of(0, 0)).plusMinutes(offset);
            } catch (NumberFormatException | DateTimeException e) {
                return false;
            }
            return true;
        };
    }

}