/*
* Copyright 2013 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.guvnor.common.services.backend.metadata.attribute;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import org.uberfire.commons.data.Pair;
import org.uberfire.java.nio.IOException;
import org.uberfire.java.nio.base.AbstractBasicFileAttributeView;
import org.uberfire.java.nio.base.AbstractPath;
import org.uberfire.java.nio.base.NeedsPreloadedAttrs;
import org.uberfire.java.nio.base.NotImplementedException;
import org.uberfire.java.nio.file.attribute.BasicFileAttributeView;
import org.uberfire.java.nio.file.attribute.BasicFileAttributes;
import org.uberfire.java.nio.file.attribute.FileTime;
import static org.uberfire.commons.data.Pair.*;
import static org.uberfire.commons.validation.Preconditions.*;
public class OtherMetaView
extends AbstractBasicFileAttributeView<AbstractPath>
implements NeedsPreloadedAttrs {
public static final String CATEGORY = "othermeta.category";
public static final String MODE = "othermeta.mode";
private static final Set<String> PROPERTIES = new HashSet<String>() {{
add( CATEGORY );
add( MODE );
}};
private final OtherMetaAttributes attrs;
public OtherMetaView( final AbstractPath path ) {
super( path );
final Map<String, Object> content = path.getAttrStorage().getContent();
final Map<Integer, String> _categories = new TreeMap<Integer, String>();
for ( final Map.Entry<String, Object> entry : content.entrySet() ) {
if ( entry.getKey().startsWith( CATEGORY ) ) {
final Pair<Integer, Object> result = extractValue( entry );
_categories.put( result.getK1(), result.getK2().toString() );
}
}
final BasicFileAttributes fileAttrs = path.getFileSystem().provider().getFileAttributeView( path, BasicFileAttributeView.class ).readAttributes();
final List<String> categories = new ArrayList<String>( _categories.values() );
this.attrs = new OtherMetaAttributes() {
@Override
public List<String> categories() {
return categories;
}
@Override
public FileTime lastModifiedTime() {
return fileAttrs.lastModifiedTime();
}
@Override
public FileTime lastAccessTime() {
return fileAttrs.lastAccessTime();
}
@Override
public FileTime creationTime() {
return fileAttrs.creationTime();
}
@Override
public boolean isRegularFile() {
return fileAttrs.isRegularFile();
}
@Override
public boolean isDirectory() {
return fileAttrs.isDirectory();
}
@Override
public boolean isSymbolicLink() {
return fileAttrs.isSymbolicLink();
}
@Override
public boolean isOther() {
return fileAttrs.isOther();
}
@Override
public long size() {
return fileAttrs.size();
}
@Override
public Object fileKey() {
return fileAttrs.fileKey();
}
};
}
private Pair<Integer, Object> extractValue( final Map.Entry<String, Object> entry ) {
int start = entry.getKey().indexOf( '[' );
if ( start < 0 ) {
return newPair( 0, entry.getValue() );
}
int end = entry.getKey().indexOf( ']' );
return newPair( Integer.valueOf( entry.getKey().substring( start + 1, end ) ), entry.getValue() );
}
@Override
public String name() {
return "othermeta";
}
@Override
public OtherMetaAttributes readAttributes() throws IOException {
return attrs;
}
@Override
public Map<String, Object> readAttributes( final String... attributes ) {
return OtherMetaAttributesUtil.toMap( readAttributes(), attributes );
}
@Override
public Class<? extends BasicFileAttributeView>[] viewTypes() {
return new Class[]{ OtherMetaView.class };
}
@Override
public void setAttribute( final String attribute,
final Object value ) throws IOException {
checkNotEmpty( "attribute", attribute );
checkCondition( "invalid attribute", PROPERTIES.contains( attribute ) );
throw new NotImplementedException();
}
}