package org.apache.lucene.codecs;
/**
* Copyright 2004 The Apache Software Foundation
*
* 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.
*/
import java.io.Closeable;
import java.io.IOException;
import org.apache.lucene.index.StoredFieldVisitor;
/**
* Codec API for reading stored fields.
* <p>
* You need to implement {@link #visitDocument(int, StoredFieldVisitor)} to
* read the stored fields for a document, implement {@link #clone()} (creating
* clones of any IndexInputs used, etc), and {@link #close()}
* @lucene.experimental
*/
public abstract class StoredFieldsReader implements Cloneable, Closeable {
/** Sole constructor. (For invocation by subclass
* constructors, typically implicit.) */
protected StoredFieldsReader() {
}
/** Visit the stored fields for document <code>n</code> */
public abstract void visitDocument(int n, StoredFieldVisitor visitor) throws IOException;
@Override
public abstract StoredFieldsReader clone();
/** Returns approximate RAM bytes used */
public abstract long ramBytesUsed();
}