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Tomcat example source code file (SavedRequestInputFilter.java)

This example Tomcat source code file (SavedRequestInputFilter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

bytechunk, bytechunk, inputfilter, inputfilter, io, ioexception, ioexception, savedrequestinputfilter, savedrequestinputfilter

The Tomcat SavedRequestInputFilter.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.apache.coyote.http11.filters;

import java.io.IOException;

import org.apache.coyote.InputBuffer;
import org.apache.coyote.http11.InputFilter;
import org.apache.tomcat.util.buf.ByteChunk;

/**
 * Input filter responsible for replaying the request body when restoring the
 * saved request after FORM authentication.
 */
public class SavedRequestInputFilter implements InputFilter {

	/**
     * The original request body.
	 */
    protected ByteChunk input = null;

    /**
     * Create a new SavedRequestInputFilter.
     * 
     * @param input The saved request body to be replayed.
     */
    public SavedRequestInputFilter(ByteChunk input) {
        this.input = input;
    }

    /**
     * Read bytes.
     */
    public int doRead(ByteChunk chunk, org.apache.coyote.Request request)
            throws IOException {
        int writeLength = 0;
        
        if (chunk.getLimit() > 0 && chunk.getLimit() < input.getLength()) {
            writeLength = chunk.getLimit();
        } else {
        	writeLength = input.getLength();
        }
        
        if(input.getOffset()>= input.getEnd())
            return -1;
        
        input.substract(chunk.getBuffer(), 0, writeLength);
        chunk.setOffset(0);
        chunk.setEnd(writeLength);
        
        return writeLength;
    }

    /**
     * Set the content length on the request.
     */
    public void setRequest(org.apache.coyote.Request request) {
        request.setContentLength(input.getLength());
    }

    /**
     * Make the filter ready to process the next request.
     */
    public void recycle() {
        input = null;
    }

    /**
     * Return the name of the associated encoding; here, the value is null.
     */
    public ByteChunk getEncodingName() {
        return null;
    }

    /**
     * Set the next buffer in the filter pipeline (has no effect).
     */
    public void setBuffer(InputBuffer buffer) {
    }

    /**
     * Amount of bytes still available in a buffer.
     */
    public int available() {
        return input.getLength();
    }
    
    /**
     * End the current request (has no effect).
     */
    public long end() throws IOException {
        return 0;
    }

}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat SavedRequestInputFilter.java source code file:

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