001/*
002 * (C) Copyright 2017 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *    http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Kevin Leturc <kleturc@nuxeo.com>
018 *
019 */
020package org.nuxeo.ecm.platform.audit.api;
021
022import java.util.stream.Collectors;
023import java.util.stream.Stream;
024import java.util.stream.StreamSupport;
025
026import org.nuxeo.ecm.core.query.sql.model.LiteralList;
027import org.nuxeo.ecm.core.query.sql.model.Literals;
028import org.nuxeo.ecm.core.query.sql.model.Operator;
029import org.nuxeo.ecm.core.query.sql.model.Predicate;
030import org.nuxeo.ecm.core.query.sql.model.Reference;
031
032/**
033 * Predicate builders for audit
034 *
035 * @since 9.3
036 */
037public class Predicates {
038
039    private Predicates() {
040        // no instantiation allowed
041    }
042
043    public static Predicate eq(String name, Object value) {
044        return createPredicate(name, Operator.EQ, value);
045    }
046
047    public static Predicate lt(String name, Object value) {
048        return createPredicate(name, Operator.LT, value);
049    }
050
051    public static Predicate lte(String name, Object value) {
052        return createPredicate(name, Operator.LTEQ, value);
053    }
054
055    public static Predicate gte(String name, Object value) {
056        return createPredicate(name, Operator.GTEQ, value);
057    }
058
059    public static Predicate gt(String name, Object value) {
060        return createPredicate(name, Operator.GT, value);
061    }
062
063    public static Predicate startsWith(String name, Object value) {
064        return createPredicate(name, Operator.STARTSWITH, value);
065    }
066
067    public static Predicate in(String name, Iterable<?> values) {
068        return createPredicate(name, Operator.IN, StreamSupport.stream(values.spliterator(), false));
069    }
070
071    public static <T> Predicate in(String name, T value, T... values) {
072        return createPredicate(name, Operator.IN, Stream.concat(Stream.of(value), Stream.of(values)));
073    }
074
075    public static Predicate in(String name, Object[] values) {
076        return createPredicate(name, Operator.IN, Stream.of(values));
077    }
078
079    private static Predicate createPredicate(String name, Operator operator, Object value) {
080        return new Predicate(new Reference(name), operator, Literals.toLiteral(value));
081    }
082
083    private static Predicate createPredicate(String name, Operator operator, Stream<?> values) {
084        return new Predicate(new Reference(name), operator,
085                values.map(Literals::toLiteral).collect(Collectors.toCollection(LiteralList::new)));
086    }
087
088}