程序包 org.apache.felix.framework.cache

类 ContentDirectoryContent

  • 所有已实现的接口:
    Content
    public class ContentDirectoryContent
extends java.lang.Object
implements Content

    • 方法概要

      所有方法 实例方法 具体方法 
      修饰符和类型 方法 说明
      void close()
      This method must be called when the content is no longer needed so that any resourses being used (e.g., open files) can be closed.
      java.util.Enumeration<java.lang.String> getEntries()
      Returns an enumeration of entry names as String objects.
      byte[] getEntryAsBytes​(java.lang.String name)
      This method returns the named entry as an array of bytes.
      Content getEntryAsContent​(java.lang.String name)
      This method returns the named entry as an IContent Typically, this method only makes sense for entries that correspond to some form of aggregated resource (e.g., an embedded JAR file or directory), but implementations are free to interpret this however makes sense.
      java.lang.String getEntryAsNativeLibrary​(java.lang.String name)
      This method returns the named entry as a file in the file system for use as a native library.
      java.io.InputStream getEntryAsStream​(java.lang.String name)
      This method returns the named entry as an input stream.
      java.net.URL getEntryAsURL​(java.lang.String name)
      This method allows retrieving an entry as a local URL.
      boolean hasEntry​(java.lang.String name)
      This method determines if the specified named entry is contained in the associated content.
      java.lang.String toString()  

      • 从类继承的方法 java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • 构造器详细资料

      • ContentDirectoryContent

        public ContentDirectoryContent​(Content content,
                               java.lang.String path)

    • 方法详细资料

      • close

        public void close()
        从接口复制的说明: Content

        This method must be called when the content is no longer needed so that any resourses being used (e.g., open files) can be closed. Once this method is called, the content is no longer usable. If the content is already closed, then calls on this method should have no effect.

        指定者:
        close 在接口中 Content

      • hasEntry

        public boolean hasEntry​(java.lang.String name)
                 throws java.lang.IllegalStateException
        从接口复制的说明: Content

        This method determines if the specified named entry is contained in the associated content. The entry name is a relative path with '/' separators.

        指定者:
        hasEntry 在接口中 Content
        参数:
        name - The name of the entry to find.
        返回:
        true if a corresponding entry was found, false otherwise.
        抛出:
        java.lang.IllegalStateException

      • getEntries

        public java.util.Enumeration<java.lang.String> getEntries()
        从接口复制的说明: Content

        Returns an enumeration of entry names as String objects. An entry name is a path constructed with '/' as path element separators and is relative to the root of the content. Entry names for entries that represent directories should end with the '/' character.

        指定者:
        getEntries 在接口中 Content

      • getEntryAsBytes

        public byte[] getEntryAsBytes​(java.lang.String name)
                       throws java.lang.IllegalStateException
        从接口复制的说明: Content

        This method returns the named entry as an array of bytes.

        指定者:
        getEntryAsBytes 在接口中 Content
        参数:
        name - The name of the entry to retrieve as a byte array.
        返回:
        An array of bytes if the corresponding entry was found, null otherwise.
        抛出:
        java.lang.IllegalStateException

      • getEntryAsStream

        public java.io.InputStream getEntryAsStream​(java.lang.String name)
                                     throws java.lang.IllegalStateException,
                                            java.io.IOException
        从接口复制的说明: Content

        This method returns the named entry as an input stream.

        指定者:
        getEntryAsStream 在接口中 Content
        参数:
        name - The name of the entry to retrieve as an input stream.
        返回:
        An input stream if the corresponding entry was found, null otherwise.
        抛出:
        java.lang.IllegalStateException
        java.io.IOException

      • getEntryAsURL

        public java.net.URL getEntryAsURL​(java.lang.String name)
        从接口复制的说明: Content

        This method allows retrieving an entry as a local URL.

        指定者:
        getEntryAsURL 在接口中 Content
        参数:
        name - The name of the entry to retrieve as a URL
        返回:
        A URL using a local protocol such as file, jar or null if not possible.

      • getEntryAsContent

        public Content getEntryAsContent​(java.lang.String name)
        从接口复制的说明: Content

        This method returns the named entry as an IContent Typically, this method only makes sense for entries that correspond to some form of aggregated resource (e.g., an embedded JAR file or directory), but implementations are free to interpret this however makes sense. This method should return a new IContent instance for every invocation and the caller is responsible for opening and closing the returned content object.

        指定者:
        getEntryAsContent 在接口中 Content
        参数:
        name - The name of the entry to retrieve as an IContent.
        返回:
        An IContent instance if a corresponding entry was found, null otherwise.

      • getEntryAsNativeLibrary

        public java.lang.String getEntryAsNativeLibrary​(java.lang.String name)
        从接口复制的说明: Content

        This method returns the named entry as a file in the file system for use as a native library. It may not be possible for all content implementations (e.g., memory only) to implement this method, in which case it is acceptable to return null. Since native libraries can only be associated with a single class loader, this method should return a unique file per request.

        指定者:
        getEntryAsNativeLibrary 在接口中 Content
        参数:
        name - The name of the entry to retrieve as a file.
        返回:
        A string corresponding to the absolute path of the file if a corresponding entry was found, null otherwise.

      • toString

        public java.lang.String toString()
        覆盖:
        toString 在类中 java.lang.Object