import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/** Constructs a scanned entity. */
public ScannedEntity(String name,
        XMLResourceIdentifier entityLocation,
        InputStream stream, Reader reader,
        String encoding, boolean literal, boolean mayReadChunks, boolean isExternal) {
    this.name = name ;
    this.entityLocation = entityLocation;
    this.stream = stream;
    this.reader = reader;
    this.encoding = encoding;
    this.literal = literal;
    this.mayReadChunks = mayReadChunks;
    this.isExternal = isExternal;
    final int size = isExternal ? fBufferSize : DEFAULT_INTERNAL_BUFFER_SIZE;
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    ch = ba.getCharBuffer(size);
    if (ch == null) {
        this.ch = new char[size];
    }
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/** Constructs a scanned entity. */
public ScannedEntity(boolean isGE, String name,
        XMLResourceIdentifier entityLocation,
        InputStream stream, Reader reader,
        String encoding, boolean literal, boolean mayReadChunks, boolean isExternal) {
    this.isGE = isGE;
    this.name = name ;
    this.entityLocation = entityLocation;
    this.stream = stream;
    this.reader = reader;
    this.encoding = encoding;
    this.literal = literal;
    this.mayReadChunks = mayReadChunks;
    this.isExternal = isExternal;
    final int size = isExternal ? fBufferSize : DEFAULT_INTERNAL_BUFFER_SIZE;
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    ch = ba.getCharBuffer(size);
    if (ch == null) {
        this.ch = new char[size];
    }
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
 * Constructs a UTF-8 reader from the specified input stream,
 * buffer size and MessageFormatter.
 *
 * @param inputStream The input stream.
 * @param size        The initial buffer size.
 * @param messageFormatter  the formatter for localizing/formatting errors.
 * @param locale    the Locale to use for messages
 */
public UTF8Reader(InputStream inputStream, int size,
        MessageFormatter messageFormatter, Locale locale) {
    fInputStream = inputStream;
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    fBuffer = ba.getByteBuffer(size);
    if (fBuffer == null) {
        fBuffer = new byte[size];
    }
    fFormatter = messageFormatter;
    fLocale = locale;
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
 * Constructs an ASCII reader from the specified input stream
 * and buffer size.
 *
 * @param inputStream The input stream.
 * @param size        The initial buffer size.
 * @param messageFormatter  the MessageFormatter to use to message reporting.
 * @param locale    the Locale for which messages are to be reported
 */
public ASCIIReader(InputStream inputStream, int size,
        MessageFormatter messageFormatter, Locale locale) {
    fInputStream = inputStream;
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    fBuffer = ba.getByteBuffer(size);
    if (fBuffer == null) {
        fBuffer = new byte[size];
    }
    fFormatter = messageFormatter;
    fLocale = locale;
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
 * Constructs an ASCII reader from the specified input stream
 * and buffer size.  The Endian-ness and whether this is
 * UCS-2 or UCS-4 needs also to be known in advance.
 *
 * @param inputStream The input stream.
 * @param size        The initial buffer size.
 * @param encoding One of UCS2LE, UCS2BE, UCS4LE or UCS4BE.
 */
public UCSReader(InputStream inputStream, int size, short encoding) {
    fInputStream = inputStream;
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    fBuffer = ba.getByteBuffer(size);
    if (fBuffer == null) {
        fBuffer = new byte[size];
    }
    fEncoding = encoding;
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
 * Release any resources associated with this entity.
 */
public void close() throws IOException {
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    ba.returnCharBuffer(ch);
    ch = null;
    reader.close();
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
 * Close the stream.  Once a stream has been closed, further read(),
 * ready(), mark(), or reset() invocations will throw an IOException.
 * Closing a previously-closed stream, however, has no effect.
 *
 * @exception  IOException  If an I/O error occurs
 */
public void close() throws IOException {
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    ba.returnByteBuffer(fBuffer);
    fBuffer = null;
    fInputStream.close();
}
 

import com.sun.xml.internal.stream.util.ThreadLocalBufferAllocator; //导入依赖的package包/类
/**
* Close the stream.  Once a stream has been closed, further read(),
* ready(), mark(), or reset() invocations will throw an IOException.
* Closing a previously-closed stream, however, has no effect.
*
* @exception  IOException  If an I/O error occurs
*/
public void close() throws IOException {
    BufferAllocator ba = ThreadLocalBufferAllocator.getBufferAllocator();
    ba.returnByteBuffer(fBuffer);
    fBuffer = null;
    fInputStream.close();
}