org.springframework.mock.web.DelegatingServletInputStream.java Source code

Introduction

Here is the source code for org.springframework.mock.web.DelegatingServletInputStream.java

Source

/*
 * Copyright 2002-2018 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.mock.web;

import java.io.IOException;
import java.io.InputStream;
import javax.servlet.ReadListener;
import javax.servlet.ServletInputStream;

import org.springframework.util.Assert;

/**
 * Delegating implementation of {@link javax.servlet.ServletInputStream}.
 *
 * <p>Used by {@link MockHttpServletRequest}; typically not directly
 * used for testing application controllers.
 *
 * @author Juergen Hoeller
 * @since 1.0.2
 * @see MockHttpServletRequest
 */
public class DelegatingServletInputStream extends ServletInputStream {

    private final InputStream sourceStream;

    private boolean finished = false;

    /**
     * Create a DelegatingServletInputStream for the given source stream.
     * @param sourceStream the source stream (never {@code null})
     */
    public DelegatingServletInputStream(InputStream sourceStream) {
        Assert.notNull(sourceStream, "Source InputStream must not be null");
        this.sourceStream = sourceStream;
    }

    /**
     * Return the underlying source stream (never {@code null}).
     */
    public final InputStream getSourceStream() {
        return this.sourceStream;
    }

    @Override
    public int read() throws IOException {
        int data = this.sourceStream.read();
        if (data == -1) {
            this.finished = true;
        }
        return data;
    }

    @Override
    public int available() throws IOException {
        return this.sourceStream.available();
    }

    @Override
    public void close() throws IOException {
        super.close();
        this.sourceStream.close();
    }

    @Override
    public boolean isFinished() {
        return this.finished;
    }

    @Override
    public boolean isReady() {
        return true;
    }

    @Override
    public void setReadListener(ReadListener readListener) {
        throw new UnsupportedOperationException();
    }

}