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Java TScan.setColumns方法代码示例

本文整理汇总了Java中org.apache.hadoop.hbase.thrift.generated.TScan.setColumns方法的典型用法代码示例。如果您正苦于以下问题：Java TScan.setColumns方法的具体用法？Java TScan.setColumns怎么用？Java TScan.setColumns使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hbase.thrift.generated.TScan的用法示例。


在下文中一共展示了TScan.setColumns方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: rowFilter

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
@Test
public void rowFilter() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";

	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	//
	String filterString = "RowFilter(=, 'regexstring:00[1-3]00')";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:34，代码来源:HBaseThriftDMLTest.java

示例2: prefixFilter

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
@Test
public void prefixFilter() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";

	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	//
	String filterString = "PrefixFilter('1000|B101|A17P')";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:34，代码来源:HBaseThriftDMLTest.java

示例3: keyOnlyFilter

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
/**
 * 只傳回key值,value屏蔽掉
 *
 * @throws Exception
 */
@Test
public void keyOnlyFilter() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";
	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	// KeyOnlyFilter()

	String filterString = "KeyOnlyFilter()";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	//
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:40，代码来源:HBaseThriftDMLTest.java

示例4: firstKeyOnlyFilter

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
/**
 * 只傳回第一個keyValue
 *
 * @throws Exception
 */
@Test
public void firstKeyOnlyFilter() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";
	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	// FirstKeyOnlyFilter()

	String filterString = "FirstKeyOnlyFilter()";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	//
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:40，代码来源:HBaseThriftDMLTest.java

示例5: scanOneColumn

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
/**
 * scan 讀取特定column
 *
 * @throws Exception
 */
@Test
// 1053 at mills.
// 897 at mills.
// 888 at mills.
public void scanOneColumn() throws Exception {
	// String TABLE_NAME = "ItemCreation_Buffer_Item";
	// String rowKey =
	// "0016630555\\x0501\\x0501\\x05A1FS\\x05CreateItem\\x0516630555\\x050000116\\x05670744-086876166705";
	// String cloumn = "ItemInfo:SellerId";

	String TABLE_NAME = "UIH_OverallItemInfo";
	String rowKey = "1000|I200|A17P|AUDI15028071";
	String cloumn = "CommonInfo:SellerID";

	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	columns.add(ByteBufferHelper.toByteBuffer(cloumn));
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	scan.setStartRow(ByteBufferHelper.toByteBuffer(rowKey));
	// scan.setStopRow(ByteBufferHelper.toByteBuffer(rowKey));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:49，代码来源:HBaseThriftDMLTest.java

示例6: scanNotClose

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
@Test
public void scanNotClose() throws Exception {
	String TABLE_NAME = "ItemCreation_Buffer_Item_B";
	String cloumn = "ItemInfo:ProcessResult";
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	columns.add(ByteBufferHelper.toByteBuffer(cloumn));
	columns.add(ByteBufferHelper.toByteBuffer("ItemInfo:ProcessStatus"));
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	//
	String filterString = "SingleColumnValueFilter('ItemInfo','ProcessResult',=,'substring:Test')";// substring:A17P
	filterString += " AND SingleColumnValueFilter('ItemInfo','ProcessStatus',=,'substring:Test')";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	int rowCount = 0;
	long beg = System.currentTimeMillis();
	for (int i = 0; i < 1000; i++) {
		try {
			scannerId = client.scannerOpenWithScan(
					ByteBufferHelper.toByteBuffer(TABLE_NAME), scan,
					attributes);// 可以attributes=null
			// System.out.println(scannerId);
			while (true) {
				List<TRowResult> results = client.scannerGet(scannerId);
				if (results.isEmpty()) {
					break;
				}
				System.out.println(i + ", " + scannerId);
				// printlnResult(results);
				rowCount++;

				if (rowCount > 0) {
					break;
				}
			}

		} catch (Exception ex) {
			ex.printStackTrace();
		} finally {
			if (scannerId >= 0) {
				// 故意不關
				// client.scannerClose(scannerId);// 一定要關閉
			}
		}
	}
	//
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:55，代码来源:HBaseThriftDMLTest.java

示例7: singleColumnValueFilter

import org.apache.hadoop.hbase.thrift.generated.TScan; //导入方法依赖的package包/类
@Test
public void singleColumnValueFilter() throws Exception {
	String TABLE_NAME = "UIH_OverallItemInfo";
	String cloumn = "CommonInfo:SellerID";

	List<TRowResult> results = null;
	//
	List<ByteBuffer> columns = new LinkedList<ByteBuffer>();
	columns.add(ByteBufferHelper.toByteBuffer(cloumn));
	columns.add(ByteBufferHelper.toByteBuffer("CommonInfo:SellerItemNumber"));
	Map<ByteBuffer, ByteBuffer> attributes = new HashMap<ByteBuffer, ByteBuffer>();
	//
	TScan scan = new TScan();
	scan.setCaching(200);
	// SingleColumnValueFilter('<family>', '<qualifier>', <compare
	// operator>, '<comparator>', <filterIfColumnMissing_boolean>,
	// <latest_version_boolean>)

	// 注意: 只有當COLUMNS中包含SingleColumnValueFilter提到的欄位時,
	// 該SingleColumnValueFilter才有效的

	String filterString = "SingleColumnValueFilter('CommonInfo','SellerID',=,'binary:A17P')";// substring:A17P
	filterString += " AND SingleColumnValueFilter('CommonInfo','SellerItemNumber',=,'binary:AUDI15028005')";
	scan.setFilterString(ByteBufferHelper.toByteBuffer(filterString));
	scan.setColumns(columns);
	//
	int scannerId = 0;
	long beg = System.currentTimeMillis();
	try {
		scannerId = client.scannerOpenWithScan(
				ByteBufferHelper.toByteBuffer(TABLE_NAME), scan, attributes);// 可以attributes=null
		results = client.scannerGetList(scannerId, 10);// 讀取幾筆
	} catch (Exception ex) {
		ex.printStackTrace();
	} finally {
		if (scannerId >= 0) {
			client.scannerClose(scannerId);// 一定要關閉
		}
	}
	long end = System.currentTimeMillis();
	System.out.println((end - beg) + " at mills.");
	printlnResult(results);
}
开发者ID:mixaceh，项目名称:openyu-commons，代码行数:44，代码来源:HBaseThriftDMLTest.java


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