import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.util.regex.Pattern;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.opensearch.log.bsbhv.BsClickLogBhv;
import org.codelibs.fess.util.ComponentUtil;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.opensearch.user.exbhv;

import java.util.Map;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

import org.codelibs.core.misc.Pair;
import org.codelibs.fess.opensearch.user.bsbhv.BsRoleBhv;
import org.codelibs.fess.opensearch.user.exentity.Role;

import com.google.common.testing.NullPointerTester;
import com.google.common.testing.NullPointerTester.Visibility;
import java.io.File;
import java.io.FilenameFilter;
import java.util.regex.PatternSyntaxException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link PatternFilenameFilter}.
 *
 * @author Chris Nokleberg
 */
@NullUnmarked

Agora você sabe que, sempre que precisar delas, pode usá-las no **FastAPI**.

### Pydantic v1 `regex` em vez de `pattern` { #pydantic-v1-regex-instead-of-pattern }

Antes da versão 2 do Pydantic e antes do FastAPI 0.100.0, o parâmetro se chamava `regex` em vez de `pattern`, mas agora está descontinuado.

Você ainda pode ver algum código usando isso:

//// tab | Pydantic v1

 */
package org.codelibs.fess.crawler.filter.impl;

import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.crawler.container.CrawlerContainer;

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The regular expression pattern field for path mapping.
     */
    public String regex;

    /**
     * The replacement string field for path mapping.
     */
    public String replacement;

     */
    @ValidateTypeFailure
    public Integer crudMode;

    /**
     * The regular expression pattern to match request paths.
     */
    @Required
    @Size(max = 1000)
    public String regex;

    /**
     * The replacement pattern for matched paths.
     */
    @Size(max = 1000)
    public String replacement;

    /**
     * The processing type for path mapping.
     */
    @Required

import java.io.*;
import java.nio.file.*;
import java.util.regex.*;

public class UpdateDevelocityPluginVersion {
    public static void main(String[] args) throws IOException {
        if (args.length != 1) {
            System.out.println("Usage: java build-logic-settings/UpdateDevelocityPluginVersion.java <new-version>");
            System.exit(1);
        }

        String newVersion = args[0];
        String[] files = {

import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.regex.MatchResult;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Stream;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.opensearch.config.exbhv;

import java.util.regex.Pattern;

import org.codelibs.fess.opensearch.config.bsbhv.BsBadWordBhv;
import org.codelibs.fess.util.ComponentUtil;

/**
 * @author FreeGen
 */
public class BadWordBhv extends BsBadWordBhv {