/*
* 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.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.guvnor.common.services.shared.metadata.model.DiscussionRecord;
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 DiscussionView
extends AbstractBasicFileAttributeView<AbstractPath>
implements NeedsPreloadedAttrs {
public static final String DISCUSS = "discuss";
public static final String TIMESTAMP = DISCUSS + ".ts";
public static final String AUTHOR = DISCUSS + ".author";
public static final String NOTE = DISCUSS + ".note";
private final DiscussionAttributes attrs;
public DiscussionView( final AbstractPath path ) {
super( path );
final Map<String, Object> content = path.getAttrStorage().getContent();
final Map<Integer, Long> timestamps = new HashMap<Integer, Long>( content.size() );
final Map<Integer, String> authors = new HashMap<Integer, String>( content.size() );
final Map<Integer, String> notes = new HashMap<Integer, String>( content.size() );
for ( final Map.Entry<String, Object> entry : content.entrySet() ) {
if ( entry.getKey().startsWith( TIMESTAMP ) ) {
final Pair<Integer, Object> result = extractValue( entry );
timestamps.put( result.getK1(), (Long) result.getK2() );
} else if ( entry.getKey().startsWith( AUTHOR ) ) {
final Pair<Integer, Object> result = extractValue( entry );
authors.put( result.getK1(), result.getK2().toString() );
} else if ( entry.getKey().startsWith( NOTE ) ) {
final Pair<Integer, Object> result = extractValue( entry );
notes.put( result.getK1(), result.getK2().toString() );
}
}
final List<DiscussionRecord> result = new ArrayList<DiscussionRecord>( timestamps.size() );
for ( int i = 0; i < timestamps.size(); i++ ) {
final Long ts = timestamps.get( i );
final String author = authors.get( i );
final String note = notes.get( i );
result.add( new DiscussionRecord( ts, author, note ) );
}
Collections.sort( result, new Comparator<DiscussionRecord>() {
@Override
public int compare( final DiscussionRecord o1,
final DiscussionRecord o2 ) {
return o1.getTimestamp().compareTo( o2.getTimestamp() );
}
} );
final BasicFileAttributes fileAttrs = path.getFileSystem().provider().getFileAttributeView( path, BasicFileAttributeView.class ).readAttributes();
this.attrs = new DiscussionAttributes() {
@Override
public List<DiscussionRecord> discussion() {
return result;
}
@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 DISCUSS;
}
@Override
public DiscussionAttributes readAttributes() throws IOException {
return attrs;
}
@Override
public Map<String, Object> readAttributes( final String... attributes ) {
return DiscussionAttributesUtil.toMap( readAttributes(), attributes );
}
@Override
public Class<? extends BasicFileAttributeView>[] viewTypes() {
return new Class[]{ DiscussionView.class };
}
@Override
public void setAttribute( final String attribute,
final Object value ) throws IOException {
checkNotEmpty( "attribute", attribute );
checkCondition( "invalid attribute", attribute.equals( name() ) );
throw new NotImplementedException();
}
}