org.apache.hadoop.hbase.TableName.createTableNameIfNecessary()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中org.apache.hadoop.hbase.TableName.createTableNameIfNecessary()方法的一些代码示例，展示了TableName.createTableNameIfNecessary()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。TableName.createTableNameIfNecessary()方法的具体详情如下：
包路径：org.apache.hadoop.hbase.TableName
类名称：TableName
方法名：createTableNameIfNecessary

TableName.createTableNameIfNecessary介绍

[英]Check that the object does not exist already. There are two reasons for creating the objects only once: 1) With 100K regions, the table names take ~20MB. 2) Equals becomes much faster as it's resolved with a reference and an int comparison.
[中]检查对象是否不存在。只创建一次对象有两个原因：1）对于100K区域，表名需要~20MB。2） 通过引用和整数比较解析Equals时，速度会快得多。

代码示例

代码示例来源：origin: apache/hbase

public static TableName valueOf(ByteBuffer namespace, ByteBuffer qualifier) {
 if (namespace == null || namespace.remaining() < 1) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME), qualifier);
 }
 return createTableNameIfNecessary(namespace, qualifier);
}

代码示例来源：origin: apache/hbase

public static TableName valueOf(byte[] namespace, byte[] qualifier) {
 if (namespace == null || namespace.length < 1) {
  namespace = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME;
 }
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getQualifier(), qualifier) &&
    Arrays.equals(tn.getNamespace(), namespace)) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(namespace), ByteBuffer.wrap(qualifier));
}

代码示例来源：origin: apache/hbase

public static TableName valueOf(String namespaceAsString, String qualifierAsString) {
 if (namespaceAsString == null || namespaceAsString.length() < 1) {
  namespaceAsString = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR;
 }
 for (TableName tn : tableCache) {
  if (qualifierAsString.equals(tn.getQualifierAsString()) &&
    namespaceAsString.equals(tn.getNamespaceAsString())) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(Bytes.toBytes(namespaceAsString)),
   ByteBuffer.wrap(Bytes.toBytes(qualifierAsString)));
}

代码示例来源：origin: apache/hbase

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this.
 */
public static TableName valueOf(String name) {
 for (TableName tn : tableCache) {
  if (name.equals(tn.getNameAsString())) {
   return tn;
  }
 }
 final int namespaceDelimIndex = name.indexOf(NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(Bytes.toBytes(name)));
 } else {
  // indexOf is by character, not byte (consider multi-byte characters)
  String ns = name.substring(0, namespaceDelimIndex);
  String qualifier = name.substring(namespaceDelimIndex + 1);
  return createTableNameIfNecessary(
    ByteBuffer.wrap(Bytes.toBytes(ns)),
    ByteBuffer.wrap(Bytes.toBytes(qualifier)));
 }
}

代码示例来源：origin: apache/hbase

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this. The test is buried in the table creation to save on array comparison
 *  when we're creating a standard table object that will be in the cache.
 */
public static TableName valueOf(byte[] fullName) throws IllegalArgumentException{
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getName(), fullName)) {
   return tn;
  }
 }
 int namespaceDelimIndex =
  org.apache.hbase.thirdparty.com.google.common.primitives.Bytes.lastIndexOf(fullName,
   (byte) NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(fullName));
 } else {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(fullName, 0, namespaceDelimIndex),
    ByteBuffer.wrap(fullName, namespaceDelimIndex + 1,
      fullName.length - (namespaceDelimIndex + 1)));
 }
}

代码示例来源：origin: com.aliyun.hbase/alihbase-common

public static TableName valueOf(ByteBuffer namespace, ByteBuffer qualifier) {
 if (namespace == null || namespace.remaining() < 1) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME), qualifier);
 }
 return createTableNameIfNecessary(namespace, qualifier);
}

代码示例来源：origin: org.apache.hbase/hbase-common

public static TableName valueOf(ByteBuffer namespace, ByteBuffer qualifier) {
 if (namespace == null || namespace.remaining() < 1) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME), qualifier);
 }
 return createTableNameIfNecessary(namespace, qualifier);
}

代码示例来源：origin: harbby/presto-connectors

public static TableName valueOf(ByteBuffer namespace, ByteBuffer qualifier) {
 if (namespace == null || namespace.remaining() < 1) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME), qualifier);
 }
 return createTableNameIfNecessary(namespace, qualifier);
}

代码示例来源：origin: org.apache.hbase/hbase-common

public static TableName valueOf(String namespaceAsString, String qualifierAsString) {
 if (namespaceAsString == null || namespaceAsString.length() < 1) {
  namespaceAsString = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR;
 }
 for (TableName tn : tableCache) {
  if (qualifierAsString.equals(tn.getQualifierAsString()) &&
    namespaceAsString.equals(tn.getNamespaceAsString())) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(Bytes.toBytes(namespaceAsString)),
   ByteBuffer.wrap(Bytes.toBytes(qualifierAsString)));
}

代码示例来源：origin: org.apache.hbase/hbase-common

public static TableName valueOf(byte[] namespace, byte[] qualifier) {
 if (namespace == null || namespace.length < 1) {
  namespace = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME;
 }
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getQualifier(), qualifier) &&
    Arrays.equals(tn.getNamespace(), namespace)) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(namespace), ByteBuffer.wrap(qualifier));
}

代码示例来源：origin: com.aliyun.hbase/alihbase-common

public static TableName valueOf(String namespaceAsString, String qualifierAsString) {
 if (namespaceAsString == null || namespaceAsString.length() < 1) {
  namespaceAsString = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR;
 }
 for (TableName tn : tableCache) {
  if (qualifierAsString.equals(tn.getQualifierAsString()) &&
    namespaceAsString.equals(tn.getNamespaceAsString())) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(Bytes.toBytes(namespaceAsString)),
   ByteBuffer.wrap(Bytes.toBytes(qualifierAsString)));
}

代码示例来源：origin: com.aliyun.hbase/alihbase-common

public static TableName valueOf(byte[] namespace, byte[] qualifier) {
 if (namespace == null || namespace.length < 1) {
  namespace = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME;
 }
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getQualifier(), qualifier) &&
    Arrays.equals(tn.getNamespace(), namespace)) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(namespace), ByteBuffer.wrap(qualifier));
}

代码示例来源：origin: org.apache.hbase/hbase-common

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this.
 */
public static TableName valueOf(String name) {
 for (TableName tn : tableCache) {
  if (name.equals(tn.getNameAsString())) {
   return tn;
  }
 }
 final int namespaceDelimIndex = name.indexOf(NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(Bytes.toBytes(name)));
 } else {
  // indexOf is by character, not byte (consider multi-byte characters)
  String ns = name.substring(0, namespaceDelimIndex);
  String qualifier = name.substring(namespaceDelimIndex + 1);
  return createTableNameIfNecessary(
    ByteBuffer.wrap(Bytes.toBytes(ns)),
    ByteBuffer.wrap(Bytes.toBytes(qualifier)));
 }
}

代码示例来源：origin: harbby/presto-connectors

public static TableName valueOf(String namespaceAsString, String qualifierAsString) {
 if (namespaceAsString == null || namespaceAsString.length() < 1) {
  namespaceAsString = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME_STR;
 }
 for (TableName tn : tableCache) {
  if (qualifierAsString.equals(tn.getQualifierAsString()) &&
    namespaceAsString.equals(tn.getNameAsString())) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(Bytes.toBytes(namespaceAsString)),
   ByteBuffer.wrap(Bytes.toBytes(qualifierAsString)));
}

代码示例来源：origin: harbby/presto-connectors

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this.
 */
public static TableName valueOf(String name) {
 for (TableName tn : tableCache) {
  if (name.equals(tn.getNameAsString())) {
   return tn;
  }
 }
 int namespaceDelimIndex = name.indexOf(NAMESPACE_DELIM);
 byte[] nameB = Bytes.toBytes(name);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(nameB));
 } else {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(nameB, 0, namespaceDelimIndex),
    ByteBuffer.wrap(nameB, namespaceDelimIndex + 1,
      nameB.length - (namespaceDelimIndex + 1)));
 }
}

代码示例来源：origin: harbby/presto-connectors

public static TableName valueOf(byte[] namespace, byte[] qualifier) {
 if (namespace == null || namespace.length < 1) {
  namespace = NamespaceDescriptor.DEFAULT_NAMESPACE_NAME;
 }
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getQualifier(), qualifier) &&
    Arrays.equals(tn.getNamespace(), namespace)) {
   return tn;
  }
 }
 return createTableNameIfNecessary(
   ByteBuffer.wrap(namespace), ByteBuffer.wrap(qualifier));
}

代码示例来源：origin: com.aliyun.hbase/alihbase-common

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this.
 */
public static TableName valueOf(String name) {
 for (TableName tn : tableCache) {
  if (name.equals(tn.getNameAsString())) {
   return tn;
  }
 }
 final int namespaceDelimIndex = name.indexOf(NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(Bytes.toBytes(name)));
 } else {
  // indexOf is by character, not byte (consider multi-byte characters)
  String ns = name.substring(0, namespaceDelimIndex);
  String qualifier = name.substring(namespaceDelimIndex + 1);
  return createTableNameIfNecessary(
    ByteBuffer.wrap(Bytes.toBytes(ns)),
    ByteBuffer.wrap(Bytes.toBytes(qualifier)));
 }
}

代码示例来源：origin: org.apache.hbase/hbase-common

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this. The test is buried in the table creation to save on array comparison
 *  when we're creating a standard table object that will be in the cache.
 */
public static TableName valueOf(byte[] fullName) throws IllegalArgumentException{
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getName(), fullName)) {
   return tn;
  }
 }
 int namespaceDelimIndex =
  org.apache.hbase.thirdparty.com.google.common.primitives.Bytes.lastIndexOf(fullName,
   (byte) NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(fullName));
 } else {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(fullName, 0, namespaceDelimIndex),
    ByteBuffer.wrap(fullName, namespaceDelimIndex + 1,
      fullName.length - (namespaceDelimIndex + 1)));
 }
}

代码示例来源：origin: harbby/presto-connectors

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this. The test is buried in the table creation to save on array comparison
 *  when we're creating a standard table object that will be in the cache.
 */
public static TableName valueOf(byte[] fullName) throws IllegalArgumentException{
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getName(), fullName)) {
   return tn;
  }
 }
 int namespaceDelimIndex = com.facebook.presto.hbase.$internal.com.google.common.primitives.Bytes.lastIndexOf(fullName,
   (byte) NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(fullName));
 } else {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(fullName, 0, namespaceDelimIndex),
    ByteBuffer.wrap(fullName, namespaceDelimIndex + 1,
      fullName.length - (namespaceDelimIndex + 1)));
 }
}

代码示例来源：origin: com.aliyun.hbase/alihbase-common

/**
 * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
 *  depends on this. The test is buried in the table creation to save on array comparison
 *  when we're creating a standard table object that will be in the cache.
 */
public static TableName valueOf(byte[] fullName) throws IllegalArgumentException{
 for (TableName tn : tableCache) {
  if (Arrays.equals(tn.getName(), fullName)) {
   return tn;
  }
 }
 int namespaceDelimIndex =
  org.apache.hbase.thirdparty.com.google.common.primitives.Bytes.lastIndexOf(fullName,
   (byte) NAMESPACE_DELIM);
 if (namespaceDelimIndex < 0) {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
    ByteBuffer.wrap(fullName));
 } else {
  return createTableNameIfNecessary(
    ByteBuffer.wrap(fullName, 0, namespaceDelimIndex),
    ByteBuffer.wrap(fullName, namespaceDelimIndex + 1,
      fullName.length - (namespaceDelimIndex + 1)));
 }
}

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