Java ColumnDescriptor类代码示例

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Hbase HColumnDescriptor object based on a
 * Thrift ColumnDescriptor "struct".
 *
 * @param in
 *          Thrift ColumnDescriptor object
 * @return HColumnDescriptor
 * @throws IllegalArgument
 */
static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
    throws IllegalArgument {
  Compression.Algorithm comp =
    Compression.getCompressionAlgorithmByName(in.compression.toLowerCase());
  BloomType bt =
    BloomType.valueOf(in.bloomFilterType);

  if (in.name == null || !in.name.hasRemaining()) {
    throw new IllegalArgument("column name is empty");
  }
  byte [] parsedName = KeyValue.parseColumn(Bytes.getBytes(in.name))[0];
  HColumnDescriptor col = new HColumnDescriptor(parsedName)
      .setMaxVersions(in.maxVersions)
      .setCompressionType(comp)
      .setInMemory(in.inMemory)
      .setBlockCacheEnabled(in.blockCacheEnabled)
      .setTimeToLive(in.timeToLive > 0 ? in.timeToLive : Integer.MAX_VALUE)
      .setBloomFilterType(bt);
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 *
 * @return a List of ColumnDescriptors for use in creating a table.  Has one
 * default ColumnDescriptor and one ColumnDescriptor with fewer versions
 */
private static List<ColumnDescriptor> getColumnDescriptors() {
  ArrayList<ColumnDescriptor> cDescriptors = new ArrayList<ColumnDescriptor>();

  // A default ColumnDescriptor
  ColumnDescriptor cDescA = new ColumnDescriptor();
  cDescA.name = columnAname;
  cDescriptors.add(cDescA);

  // A slightly customized ColumnDescriptor (only 2 versions)
  ColumnDescriptor cDescB = new ColumnDescriptor(columnBname, 2, "NONE",
      false, "NONE", 0, 0, false, -1);
  cDescriptors.add(cDescB);

  return cDescriptors;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Hbase HColumnDescriptor object based on a
 * Thrift ColumnDescriptor "struct".
 *
 * @param in
 *          Thrift ColumnDescriptor object
 * @return HColumnDescriptor
 * @throws IllegalArgument
 */
static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
    throws IllegalArgument {
  Compression.Algorithm comp =
    Compression.getCompressionAlgorithmByName(in.compression.toLowerCase());
  StoreFile.BloomType bt =
    BloomType.valueOf(in.bloomFilterType);

  if (in.name == null || !in.name.hasRemaining()) {
    throw new IllegalArgument("column name is empty");
  }
  byte [] parsedName = KeyValue.parseColumn(Bytes.getBytes(in.name))[0];
  HColumnDescriptor col = new HColumnDescriptor(parsedName)
      .setMaxVersions(in.maxVersions)
      .setCompressionType(comp)
      .setInMemory(in.inMemory)
      .setBlockCacheEnabled(in.blockCacheEnabled)
      .setTimeToLive(in.timeToLive)
      .setBloomFilterType(bt);
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Hbase HColumnDescriptor object based on a
 * Thrift ColumnDescriptor "struct".
 *
 * @param in
 *          Thrift ColumnDescriptor object
 * @return HColumnDescriptor
 * @throws IllegalArgument
 */
static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
    throws IllegalArgument {
  Compression.Algorithm comp =
    Compression.getCompressionAlgorithmByName(in.compression.toLowerCase());
  BloomType bt =
    BloomType.valueOf(in.bloomFilterType);

  if (in.name == null || !in.name.hasRemaining()) {
    throw new IllegalArgument("column name is empty");
  }
  byte [] parsedName = KeyValue.parseColumn(Bytes.getBytes(in.name))[0];
  HColumnDescriptor col = new HColumnDescriptor(parsedName)
      .setMaxVersions(in.maxVersions)
      .setCompressionType(comp)
      .setInMemory(in.inMemory)
      .setBlockCacheEnabled(in.blockCacheEnabled)
      .setTimeToLive(in.timeToLive)
      .setBloomFilterType(bt);
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Hbase HColumnDescriptor object based on a
 * Thrift ColumnDescriptor "struct".
 *
 * @param in Thrift ColumnDescriptor object
 * @return HColumnDescriptor
 * @throws IllegalArgument if the column name is empty
 */
static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
    throws IllegalArgument {
  Compression.Algorithm comp =
    Compression.getCompressionAlgorithmByName(in.compression.toLowerCase(Locale.ROOT));
  BloomType bt =
    BloomType.valueOf(in.bloomFilterType);

  if (in.name == null || !in.name.hasRemaining()) {
    throw new IllegalArgument("column name is empty");
  }
  byte [] parsedName = CellUtil.parseColumn(Bytes.getBytes(in.name))[0];
  HColumnDescriptor col = new HColumnDescriptor(parsedName)
      .setMaxVersions(in.maxVersions)
      .setCompressionType(comp)
      .setInMemory(in.inMemory)
      .setBlockCacheEnabled(in.blockCacheEnabled)
      .setTimeToLive(in.timeToLive > 0 ? in.timeToLive : Integer.MAX_VALUE)
      .setBloomFilterType(bt);
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * @return a List of ColumnDescriptors for use in creating a table.  Has one
 *         default ColumnDescriptor and one ColumnDescriptor with fewer versions
 */
private static List<ColumnDescriptor> getColumnDescriptors() {
  ArrayList<ColumnDescriptor> cDescriptors = new ArrayList<>(2);

  // A default ColumnDescriptor
  ColumnDescriptor cDescA = new ColumnDescriptor();
  cDescA.name = columnAname;
  cDescriptors.add(cDescA);

  // A slightly customized ColumnDescriptor (only 2 versions)
  ColumnDescriptor cDescB = new ColumnDescriptor(columnBname, 2, "NONE",
      false, "NONE", 0, 0, false, -1);
  cDescriptors.add(cDescB);

  return cDescriptors;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Hbase HColumnDescriptor object based on a
 * Thrift ColumnDescriptor "struct".
 *
 * @param in
 *          Thrift ColumnDescriptor object
 * @return HColumnDescriptor
 * @throws IllegalArgument
 */
static public HColumnDescriptor colDescFromThrift(ColumnDescriptor in)
    throws IllegalArgument {
  Compression.Algorithm comp =
    Compression.getCompressionAlgorithmByName(in.compression.toLowerCase());
  StoreFile.BloomType bt =
    BloomType.valueOf(in.bloomFilterType);

  if (in.name == null || !in.name.hasRemaining()) {
    throw new IllegalArgument("column name is empty");
  }
  byte [] parsedName = KeyValue.parseColumn(Bytes.getBytes(in.name))[0];
  HColumnDescriptor col = new HColumnDescriptor(parsedName,
      in.maxVersions, comp.getName(), in.inMemory, in.blockCacheEnabled,
      in.timeToLive, bt.toString());
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * This utility method creates a new Thrift ColumnDescriptor "struct" based on
 * an Hbase HColumnDescriptor object.
 *
 * @param in
 *          Hbase HColumnDescriptor object
 * @return Thrift ColumnDescriptor
 */
static public ColumnDescriptor colDescFromHbase(HColumnDescriptor in) {
  ColumnDescriptor col = new ColumnDescriptor();
  col.name = ByteBuffer.wrap(Bytes.add(in.getName(), KeyValue.COLUMN_FAMILY_DELIM_ARRAY));
  col.maxVersions = in.getMaxVersions();
  col.compression = in.getCompression().toString();
  col.inMemory = in.isInMemory();
  col.blockCacheEnabled = in.isBlockCacheEnabled();
  col.bloomFilterType = in.getBloomFilterType().toString();
  return col;
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
public static void createTestTables(Hbase.Iface handler) throws Exception {
  // Create/enable/disable/delete tables, ensure methods act correctly
  assertEquals(handler.getTableNames().size(), 0);
  handler.createTable(tableAname, getColumnDescriptors());
  assertEquals(handler.getTableNames().size(), 1);
  assertEquals(handler.getColumnDescriptors(tableAname).size(), 2);
  assertTrue(handler.isTableEnabled(tableAname));
  handler.createTable(tableBname, new ArrayList<ColumnDescriptor>());
  assertEquals(handler.getTableNames().size(), 2);
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
@Test
public void getTable() throws Exception {
	TTransport ttransport = htDataSource.getTTransport();
	TProtocol tprotocol = new TBinaryProtocol(ttransport);
	Hbase.Client client = new Hbase.Client(tprotocol);
	//
	String TABLE_NAME = "UIH_OverallItemInfo";
	//
	long beg = System.currentTimeMillis();
	Map<ByteBuffer, ColumnDescriptor> hcds = client
			.getColumnDescriptors(ByteBufferHelper.toByteBuffer(TABLE_NAME));
	//
	StringBuilder buffer = new StringBuilder();
	buffer.append("[");
	buffer.append(TABLE_NAME);
	buffer.append("] ");
	int size = hcds.size();
	int i = 0;
	for (ColumnDescriptor column : hcds.values()) {
		buffer.append(ByteHelper.toString(column.getName()));
		buffer.append(", " + column.getTimeToLive());// server沒提供
		if (i < size - 1) {
			buffer.append(", ");
		}
		i++;
	}
	ttransport.close();
	//
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	System.out.println(buffer);
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
@Test
// 50 times: 59110 mills.
public void listTables() throws Exception {
	int count = 50;
	//
	long beg = System.currentTimeMillis();
	for (int i = 0; i < count; i++) {
		TTransport ttransport = htDataSource.getTTransport();
		TProtocol tprotocol = new TBinaryProtocol(ttransport);
		Hbase.Client client = new Hbase.Client(tprotocol);

		List<ByteBuffer> list = client.getTableNames();
		for (ByteBuffer name : list) {
			StringBuilder buffer = new StringBuilder();
			buffer.append("[");
			buffer.append(ByteBufferHelper.toString(name));
			buffer.append("] ");
			Map<ByteBuffer, ColumnDescriptor> hcds = client
					.getColumnDescriptors(name);
			int size = hcds.size();
			int j = 0;
			for (ColumnDescriptor column : hcds.values()) {
				buffer.append(ByteHelper.toString(column.getName()));
				if (j < size - 1) {
					buffer.append(", ");
				}
				j++;
			}
			//
			System.out.println(buffer);
			ttransport.close();
		}
	}
	long end = System.currentTimeMillis();
	System.out.println(count + " times: " + (end - beg) + " mills. ");
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
@Test
public void getTable() throws Exception {
	HtSession thriftSession = htSessionFactory.openSession();
	//
	String TABLE_NAME = "UIH_OverallItemInfo";
	long beg = System.currentTimeMillis();
	Map<ByteBuffer, ColumnDescriptor> hcds = thriftSession
			.getColumnDescriptors(ByteBufferHelper.toByteBuffer(TABLE_NAME));
	//
	StringBuilder buffer = new StringBuilder();
	buffer.append("[");
	buffer.append(TABLE_NAME);
	buffer.append("] ");
	int size = hcds.size();
	int i = 0;
	for (ColumnDescriptor column : hcds.values()) {
		buffer.append(ByteHelper.toString(column.getName()));
		buffer.append(", " + column.getTimeToLive());// server沒提供
		if (i < size - 1) {
			buffer.append(", ");
		}
		i++;
	}
	htSessionFactory.closeSession();
	long end = System.currentTimeMillis();
	//
	System.out.println((end - beg) + " at mills.");
	System.out.println(buffer);
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
@Test
// 50 times: 52851 mills.
public void listTables() throws Exception {
	int count = 50;
	//
	long beg = System.currentTimeMillis();
	for (int i = 0; i < count; i++) {
		HtSession htSession = htSessionFactory.openSession();
		System.out.println(htSession);
		//
		List<ByteBuffer> list = htSession.getTableNames();
		for (ByteBuffer name : list) {
			StringBuilder buffer = new StringBuilder();
			buffer.append("[");
			buffer.append(ByteBufferHelper.toString(name));
			buffer.append("] ");
			Map<ByteBuffer, ColumnDescriptor> hcds = htSession
					.getColumnDescriptors(name);
			int size = hcds.size();
			int j = 0;
			for (ColumnDescriptor column : hcds.values()) {
				buffer.append(ByteHelper.toString(column.getName()));
				if (j < size - 1) {
					buffer.append(", ");
				}
				j++;
			}
			//
			System.out.println(buffer);
		}
		htSessionFactory.closeSession();
	}
	long end = System.currentTimeMillis();
	System.out.println(count + " times: " + (end - beg) + " mills. ");
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * getting a table
 *
 * @throws Exception
 */
@Test
public void getTable() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";
	//
	long beg = System.currentTimeMillis();
	Map<ByteBuffer, ColumnDescriptor> hcds = client
			.getColumnDescriptors(ByteBufferHelper.toByteBuffer(TABLE_NAME));
	//
	StringBuilder buffer = new StringBuilder();
	buffer.append("[");
	buffer.append(TABLE_NAME);
	buffer.append("] ");
	int size = hcds.size();
	int i = 0;
	for (ColumnDescriptor column : hcds.values()) {
		buffer.append(ByteHelper.toString(column.getName()));
		buffer.append(", " + column.getTimeToLive());// server沒提供
		if (i < size - 1) {
			buffer.append(", ");
		}
		i++;
	}
	//
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");

	System.out.println(buffer);
}
 

import org.apache.hadoop.hbase.thrift.generated.ColumnDescriptor; //导入依赖的package包/类
/**
 * list all tables
 *
 * @throws Exception
 */
@Test
// 50 times: 59193 mills.
public void listTables() throws Exception {
	int count = 50;
	//
	long beg = System.currentTimeMillis();
	for (int i = 0; i < count; i++) {
		TTransport ttransport = createTTransport();
		TProtocol tprotocol = createTBinaryProtocol(ttransport);
		Hbase.Client client = createClient(tprotocol);
		System.out.println(client);
		//
		List<ByteBuffer> list = client.getTableNames();
		for (ByteBuffer name : list) {
			StringBuilder buffer = new StringBuilder();
			buffer.append("[");
			buffer.append(ByteBufferHelper.toString(name));
			buffer.append("] ");
			Map<ByteBuffer, ColumnDescriptor> hcds = client
					.getColumnDescriptors(name);
			int size = hcds.size();
			int j = 0;
			for (ColumnDescriptor column : hcds.values()) {
				buffer.append(ByteHelper.toString(column.getName()));
				if (j < size - 1) {
					buffer.append(", ");
				}
				j++;
			}
			//
			System.out.println(buffer);
		}
		ttransport.close();
	}
	long end = System.currentTimeMillis();
	System.out.println(count + " times: " + (end - beg) + " mills. ");
}