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ADBA implementation for PostgreSQL
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/*
 * Copyright (c)  2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package jdk.incubator.sql2;

import java.util.function.Function;

/**
 * Properties that apply to the DataSource as a whole, not to the individual
 * {@link Session}s that the {@link DataSource} creates.
 */
public enum AdbaDataSourceProperty implements DataSourceProperty {
  
 
  MAX_RESOURCES(Integer.class,
                v -> v instanceof Integer && (int) v >= 0,
                Integer.MAX_VALUE,
                false),
  
  MAX_IDLE_RESOURCES(Integer.class,
                v -> v instanceof Integer && (int) v >= 0,
                Integer.MAX_VALUE,
                false);

  private final Class range;
  private final Function validator;
  private final Object defaultValue;
  private final boolean isSensitive;

  private AdbaDataSourceProperty(Class range, 
          Function validator,
          Object value,
          boolean isSensitive) {
    this.range = range;
    this.validator = validator;
    this.defaultValue = value;
    this.isSensitive = isSensitive;
  }
  
  @Override
  /**
   * {@inheritDoc}
   */
  public Class range() {
    return range;
  }

  @Override
  /**
   * {@inheritDoc}
   */
  public Object defaultValue() {
    return defaultValue;
  }

  @Override
  /**
   * {@inheritDoc}
   */
  public boolean isSensitive() {
    return isSensitive;
  }
  
  @Override
  public boolean validate(Object value) {
    return validator.apply(value);
  }
}