package com.bigdata.bfs;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Logger;
/**
* Flyweight {@link DocumentHeader} implementation.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class DocumentHeaderImpl implements DocumentHeader
{
protected static Logger log = Logger.getLogger(DocumentHeaderImpl.class);
final private Map<String,Object> properties;
/**
* Create a new empty document.
*/
public DocumentHeaderImpl()
{
properties = new HashMap<String,Object>();
}
/**
* Copy constructor for header information.
*
* @param header to copy
*/
public DocumentHeaderImpl( DocumentHeader header )
{
this(header.asMap());
}
public DocumentHeaderImpl( Map<String,Object> metadata )
{
properties = new HashMap<String,Object>(metadata);
}
public void setId(String id) {
properties.put(FileMetadataSchema.ID, id);
}
/**
* Package private method sets the file version.
*
* @param version
* The file version.
*/
void getVersion(int version) {
properties.put(FileMetadataSchema.VERSION,Integer.valueOf(version));
}
public void setContentType(String contentType) {
properties.put(FileMetadataSchema.CONTENT_TYPE, contentType);
}
public void setContentEncoding(String contentEncoding) {
properties.put(FileMetadataSchema.CONTENT_ENCODING, contentEncoding);
}
public String getId() {
return (String) properties.get(FileMetadataSchema.ID);
}
public int getVersion() {
Integer version = (Integer) properties.get(FileMetadataSchema.VERSION);
if (version == null)
throw new IllegalStateException("No version");
return version.intValue();
}
public String getContentType() {
return (String) properties.get(FileMetadataSchema.CONTENT_TYPE);
}
public String getContentEncoding()
{
return (String) properties.get(FileMetadataSchema.CONTENT_ENCODING);
}
/**
* Set an arbitrary property value.
*
* @param property
* The property name.
* @param value
* The value.
*/
public void setProperty(String name,Object newValue) {
properties.put(name,newValue);
}
public Object getProperty(String name) {
return properties.get(name);
}
public Map<String,Object> asMap() {
return Collections.unmodifiableMap(properties);
}
/**
* Always returns <code>false</code>.
*/
public boolean exists() {
return false;
}
/**
* @throws IllegalStateException always.
*/
public long getEarliestVersionCreateTime() {
throw new IllegalStateException();
}
/**
* @throws IllegalStateException always.
*/
public long getMetadataUpdateTime() {
throw new IllegalStateException();
}
/**
* @throws IllegalStateException always.
*/
public long getVersionCreateTime() {
throw new IllegalStateException();
}
}