hadoop LongParam 源码

  • 2022-10-20
  • 浏览 (120)

haddop LongParam 代码

文件路径:/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/resources/LongParam.java

/**
 * 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.hadoop.hdfs.web.resources;

/** Long parameter. */
abstract class LongParam extends Param<Long, LongParam.Domain> {
  LongParam(final Domain domain, final Long value, final Long min,
            final Long max) {
    super(domain, value);
    checkRange(min, max);
  }

  private void checkRange(final Long min, final Long max) {
    if (value == null) {
      return;
    }
    if (min != null && value < min) {
      throw new IllegalArgumentException("Invalid parameter range: " + getName()
          + " = " + domain.toString(value) + " < " + domain.toString(min));
    }
    if (max != null && value > max) {
      throw new IllegalArgumentException("Invalid parameter range: " + getName()
          + " = " + domain.toString(value) + " > " + domain.toString(max));
    }
  }

  @Override
  public String toString() {
    return getName() + "=" + domain.toString(getValue());
  }

  /** @return the parameter value as a string */
  @Override
  public String getValueString() {
    return domain.toString(getValue());
  }

  /** The domain of the parameter. */
  static final class Domain extends Param.Domain<Long> {
    /** The radix of the number. */
    final int radix;

    Domain(final String paramName) {
      this(paramName, 10);
    }

    Domain(final String paramName, final int radix) {
      super(paramName);
      this.radix = radix;
    }

    @Override
    public String getDomain() {
      return "<" + NULL + " | long in radix " + radix + ">";
    }

    @Override
    Long parse(final String str) {
      try {
        return NULL.equals(str) || str == null ? null: Long.parseLong(str,
          radix);
      } catch(NumberFormatException e) {
        throw new IllegalArgumentException("Failed to parse \"" + str
            + "\" as a radix-" + radix + " long integer.", e);
      }
    }

    /** Convert a Long to a String. */
    String toString(final Long n) {
      return n == null? NULL: Long.toString(n, radix);
    }
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AccessTimeParam 源码

hadoop AclPermissionParam 源码

hadoop BlockSizeParam 源码

hadoop BooleanParam 源码

hadoop BufferSizeParam 源码

hadoop ConcatSourcesParam 源码

hadoop CreateFlagParam 源码

hadoop CreateParentParam 源码

hadoop DelegationParam 源码

hadoop DeleteOpParam 源码

0  赞