// Copyright 2009 Google 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 com.google.enterprise.connector.filesystem;
import com.google.enterprise.connector.spi.DocumentAccessException;
import com.google.enterprise.connector.spi.DocumentNotFoundException;
import com.google.enterprise.connector.spi.RepositoryException;
/** An abstract implementation of FileSystemType. */
public abstract class AbstractFileSystemType<T extends ReadonlyFile<T>>
implements FileSystemType<T> {
@Override
public abstract T getFile(String path, Credentials credentials)
throws RepositoryException;
@Override
public abstract String getName();
@Override
public boolean isPath(String path) {
return (path == null) ? false : path.startsWith("/");
}
@Override
public T getReadableFile(String path, Credentials credentials)
throws RepositoryException {
if (!isPath(path)) {
throw new IllegalArgumentException("Invalid path " + path);
}
T result = getFile(path, credentials);
if (!result.exists()) {
throw new DocumentNotFoundException("Path does not exist: " + path);
}
if (!result.canRead()) {
throw new DocumentAccessException("User does not have access to "
+ path);
}
return result;
}
@Override
public boolean isUserPasswordRequired() {
return false;
}
@Override
public boolean supportsAuthz() {
return isUserPasswordRequired();
}
@Override
public boolean supportsAcls() {
return false;
}
}