| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.tinkerpop.gremlin.process.traversal; |
| |
| import java.io.Serializable; |
| import java.util.Objects; |
| import java.util.function.BiPredicate; |
| import java.util.regex.Pattern; |
| import java.util.regex.Matcher; |
| |
| /** |
| * {@link Text} is a {@code BiPredicate} that determines whether the first string starts with, starts |
| * not with, ends with, ends not with, contains or does not contain the second string argument. |
| * |
| * @author Daniel Kuppitz (http://gremlin.guru) |
| * @since 3.4.0 |
| */ |
| public enum Text implements BiPredicate<String, String> { |
| |
| /** |
| * Evaluates if the first string starts with the second. |
| * |
| * @since 3.4.0 |
| */ |
| startingWith { |
| @Override |
| public boolean test(final String value, final String prefix) { |
| checkNull(value, prefix); |
| return value.startsWith(prefix); |
| } |
| |
| /** |
| * The negative of {@code startsWith} is {@link #notStartingWith}. |
| */ |
| @Override |
| public Text negate() { |
| return notStartingWith; |
| } |
| }, |
| |
| /** |
| * Evaluates if the first string does not start with the second. |
| * |
| * @since 3.4.0 |
| */ |
| notStartingWith { |
| @Override |
| public boolean test(final String value, final String prefix) { |
| return !startingWith.test(value, prefix); |
| } |
| |
| /** |
| * The negative of {@code startsNotWith} is {@link #startingWith}. |
| */ |
| @Override |
| public Text negate() { |
| return startingWith; |
| } |
| }, |
| |
| /** |
| * Evaluates if the first string ends with the second. |
| * |
| * @since 3.4.0 |
| */ |
| endingWith { |
| @Override |
| public boolean test(final String value, final String suffix) { |
| checkNull(value, suffix); |
| return value.endsWith(suffix); |
| } |
| |
| /** |
| * The negative of {@code endsWith} is {@link #notEndingWith}. |
| */ |
| @Override |
| public Text negate() { |
| return notEndingWith; |
| } |
| }, |
| |
| /** |
| * Evaluates if the first string does not end with the second. |
| * |
| * @since 3.4.0 |
| */ |
| notEndingWith { |
| @Override |
| public boolean test(final String value, final String prefix) { |
| return !endingWith.test(value, prefix); |
| } |
| |
| /** |
| * The negative of {@code endsNotWith} is {@link #endingWith}. |
| */ |
| @Override |
| public Text negate() { |
| return endingWith; |
| } |
| }, |
| |
| /** |
| * Evaluates if the first string contains the second. |
| * |
| * @since 3.4.0 |
| */ |
| containing { |
| @Override |
| public boolean test(final String value, final String search) { |
| checkNull(value, search); |
| return value.contains(search); |
| } |
| |
| /** |
| * The negative of {@code contains} is {@link #notContaining}. |
| */ |
| @Override |
| public Text negate() { |
| return notContaining; |
| } |
| }, |
| |
| /** |
| * Evaluates if the first string does not contain the second. |
| * |
| * @since 3.4.0 |
| */ |
| notContaining { |
| @Override |
| public boolean test(final String value, final String search) { |
| return !containing.test(value, search); |
| } |
| |
| /** |
| * The negative of {@code absent} is {@link #containing}. |
| */ |
| @Override |
| public Text negate() { |
| return containing; |
| } |
| }; |
| |
| private static void checkNull(final String... args) { |
| for (String arg : args) |
| if (arg == null) |
| throw new GremlinTypeErrorException(); |
| } |
| |
| /** |
| * Produce the opposite representation of the current {@code Text} enum. |
| */ |
| @Override |
| public abstract Text negate(); |
| |
| /** |
| * Allows for a compiled version of the regex pattern. |
| */ |
| public static class RegexPredicate implements BiPredicate<String, String>, Serializable { |
| |
| private final Pattern pattern; |
| private final boolean negate; |
| |
| public RegexPredicate(final String expression, final boolean negate) { |
| pattern = Pattern.compile(expression); |
| this.negate = negate; |
| } |
| |
| public boolean isNegate() { |
| return negate; |
| } |
| |
| public String getPattern() { |
| return pattern.pattern(); |
| } |
| |
| @Override |
| public boolean test(final String value, final String expression) { |
| // expression can be ignored here since it was passed in on construction in TextP |
| final Matcher matcher = pattern.matcher(value); |
| return negate != matcher.find(); |
| } |
| |
| @Override |
| public BiPredicate<String, String> negate() { |
| return new RegexPredicate(pattern.pattern(), !negate); |
| } |
| |
| @Override |
| public boolean equals(final Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| final RegexPredicate that = (RegexPredicate) o; |
| return negate == that.negate && pattern.pattern().equals(that.pattern.pattern()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(pattern.pattern(), negate); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("regex(%s)", pattern.pattern()); |
| } |
| } |
| } |