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/*
 * 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 com.frameworkset.commons.dbcp2;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.text.MessageFormat;
import java.util.HashSet;
import java.util.ResourceBundle;
import java.util.Set;

/**
 * Utility methods.
 *
 * @since 2.0
 */
public final class Utils {

    private static final ResourceBundle messages = ResourceBundle
            .getBundle(Utils.class.getPackage().getName() + ".LocalStrings");

    /**
     * Whether the security manager is enabled.
     */
    public static final boolean IS_SECURITY_ENABLED = System.getSecurityManager() != null;

    /** Any SQL_STATE starting with this value is considered a fatal disconnect */
    public static final String DISCONNECTION_SQL_CODE_PREFIX = "08";

    /**
     * SQL codes of fatal connection errors.
     * 
    *
  • 57P01 (Admin shutdown)
  • *
  • 57P02 (Crash shutdown)
  • *
  • 57P03 (Cannot connect now)
  • *
  • 01002 (SQL92 disconnect error)
  • *
  • JZ0C0 (Sybase disconnect error)
  • *
  • JZ0C1 (Sybase disconnect error)
  • *
*/ public static final Set DISCONNECTION_SQL_CODES; static { DISCONNECTION_SQL_CODES = new HashSet(); DISCONNECTION_SQL_CODES.add("57P01"); // Admin shutdown DISCONNECTION_SQL_CODES.add("57P02"); // Crash shutdown DISCONNECTION_SQL_CODES.add("57P03"); // Cannot connect now DISCONNECTION_SQL_CODES.add("01002"); // SQL92 disconnect error DISCONNECTION_SQL_CODES.add("JZ0C0"); // Sybase disconnect error DISCONNECTION_SQL_CODES.add("JZ0C1"); // Sybase disconnect error } /** * Clones the given char[] if not null. * * @param value * may be null. * @return a cloned char[] or null. */ public static char[] clone(final char[] value) { return value == null ? null : value.clone(); } /** * Closes the AutoCloseable (which may be null). * * @param autoCloseable * an AutoCloseable, may be {@code null} * @since 2.6.0 */ public static void closeQuietly(final AutoCloseable autoCloseable) { if (autoCloseable != null) { try { autoCloseable.close(); } catch (final Exception e) { // ignored } } } /** * Closes the Connection (which may be null). * * @param connection * a Connection, may be {@code null} * @deprecated Use {@link #closeQuietly(AutoCloseable)}. */ @Deprecated public static void closeQuietly(final Connection connection) { if (connection != null) { try { connection.close(); } catch (final Exception e) { // ignored } } } /** * Closes the ResultSet (which may be null). * * @param resultSet * a ResultSet, may be {@code null} * @deprecated Use {@link #closeQuietly(AutoCloseable)}. */ @Deprecated public static void closeQuietly(final ResultSet resultSet) { if (resultSet != null) { try { resultSet.close(); } catch (final Exception e) { // ignored } } } /** * Closes the Statement (which may be null). * * @param statement * a Statement, may be {@code null}. * @deprecated Use {@link #closeQuietly(AutoCloseable)}. */ @Deprecated public static void closeQuietly(final Statement statement) { if (statement != null) { try { statement.close(); } catch (final Exception e) { // ignored } } } /** * Gets the correct i18n message for the given key. * * @param key * The key to look up an i18n message. * @return The i18n message. */ public static String getMessage(final String key) { return getMessage(key, (Object[]) null); } /** * Gets the correct i18n message for the given key with placeholders replaced by the supplied arguments. * * @param key * A message key. * @param args * The message arguments. * @return An i18n message. */ public static String getMessage(final String key, final Object... args) { final String msg = messages.getString(key); if (args == null || args.length == 0) { return msg; } final MessageFormat mf = new MessageFormat(msg); return mf.format(args, new StringBuffer(), null).toString(); } /** * Converts the given String to a char[]. * * @param value * may be null. * @return a char[] or null. */ public static char[] toCharArray(final String value) { return value != null ? value.toCharArray() : null; } /** * Converts the given char[] to a String. * * @param value * may be null. * @return a String or null. */ public static String toString(final char[] value) { return value == null ? null : String.valueOf(value); } private Utils() { // not instantiable } }




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