spring RandomAccessData 源码
springboot RandomAccessData 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/data/RandomAccessData.java
/*
* Copyright 2012-2019 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.boot.loader.data;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
/**
* Interface that provides read-only random access to some underlying data.
* Implementations must allow concurrent reads in a thread-safe manner.
*
* @author Phillip Webb
* @since 1.0.0
*/
public interface RandomAccessData {
/**
* Returns an {@link InputStream} that can be used to read the underlying data. The
* caller is responsible close the underlying stream.
* @return a new input stream that can be used to read the underlying data.
* @throws IOException if the stream cannot be opened
*/
InputStream getInputStream() throws IOException;
/**
* Returns a new {@link RandomAccessData} for a specific subsection of this data.
* @param offset the offset of the subsection
* @param length the length of the subsection
* @return the subsection data
*/
RandomAccessData getSubsection(long offset, long length);
/**
* Reads all the data and returns it as a byte array.
* @return the data
* @throws IOException if the data cannot be read
*/
byte[] read() throws IOException;
/**
* Reads the {@code length} bytes of data starting at the given {@code offset}.
* @param offset the offset from which data should be read
* @param length the number of bytes to be read
* @return the data
* @throws IOException if the data cannot be read
* @throws IndexOutOfBoundsException if offset is beyond the end of the file or
* subsection
* @throws EOFException if offset plus length is greater than the length of the file
* or subsection
*/
byte[] read(long offset, long length) throws IOException;
/**
* Returns the size of the data.
* @return the size
*/
long getSize();
}
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- 本文标签： Spring Boot Java Spring
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