blobimpl.java

Speedframework--基于类型元数据的羽量级ORM.完全基于Java类型元数据和反射机制同时不需要任何对象关系映射配置文件的轻量级ORM框架,它充分利用了类型本身的信息,使用Metadata

package org.speedframework.entity;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.SQLException;

/**
 * Blob 类型实现 
 * @author lizf
 *
 */
public class BlobImpl implements Blob {
	
	private InputStream stream;
	private int length;
	private boolean needsReset = false;
	
	public BlobImpl(byte[] bytes) {
		this.stream = new ByteArrayInputStream(bytes);
		this.length = bytes.length;
	}

	public BlobImpl(InputStream stream, int length) {
		this.stream = stream;
		this.length = length;
	}

	public long length() throws SQLException {
		return length;
	}

	public void truncate(long len) throws SQLException {
		// TODO 自动生成方法存根

	}

	public byte[] getBytes(long pos, int length) throws SQLException {
		// TODO 自动生成方法存根
		return null;
	}

	public int setBytes(long pos, byte[] bytes) throws SQLException {
		// TODO 自动生成方法存根
		return 0;
	}

	public int setBytes(long pos, byte[] bytes, int offset, int len)
			throws SQLException {
		// TODO 自动生成方法存根
		return 0;
	}

	public long position(byte[] pattern, long start) throws SQLException {
		// TODO 自动生成方法存根
		return 0;
	}

	public InputStream getBinaryStream() throws SQLException {
		// TODO 自动生成方法存根
		try {
			if (needsReset) stream.reset();
		}
		catch (IOException ioe) {
			throw new SQLException("could not reset reader");
		}
		needsReset = true;
		return stream;
	}

	public OutputStream setBinaryStream(long pos) throws SQLException {
		// TODO 自动生成方法存根
		return null;
	}

	public long position(Blob pattern, long start) throws SQLException {
		// TODO 自动生成方法存根
		return 0;
	}

}