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Apache
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Felix
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iPOJO
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Online
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Manipulator
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iPOJO
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generally
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requires
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an
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additional
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packaging
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step
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to
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prepare
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the
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bundle
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to
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be
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managed
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by
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iPOJO.
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Despite
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this
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step
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doesn't
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change
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the
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class
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semantic,
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it
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can
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be
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a
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little
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annoying.
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The
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online
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manipulator
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avoids
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this
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offline
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step!
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_ {div:class=toc} {toc:maxLevel=4|minLevel=2} {div} h2.Features iPOJO is based on a bytecode [manipulation|Dive into the iPOJO Manipulation depths]. This manipulate is {{safe}} and does not change the class semantics. Classes can still used after the manipulation without iPOJO. However this manipulation is required for iPOJO management. Generally, this manipulation occurs offline during the packaging time. The online manipulator allows to do this manipulation at install time. The online manipulator: * avoids offline manipulation * supports annotations * supports XSD schema |
Features
iPOJO is based on a bytecode manipulation. This manipulate is safe
and does not change the class semantics. Classes can still used after the manipulation without iPOJO. However this manipulation is required for iPOJO management. Generally, this manipulation occurs offline during the packaging time. The online manipulator allows to do this manipulation at install time.
The online manipulator:
- avoids offline manipulation
- supports annotations
- supports XSD schema
Wiki Markup {center} !manipulation.png|width=640|height=300! {center}
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This
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- is
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- quite
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- useful
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- if
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- you
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- don't
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- want
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- to
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- add
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- an
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- extra
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- packaging
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- step,
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- and
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- provides
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- the
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- same
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- capabilities
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- as
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- the
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- "regular"
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- way.
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Usage
The online-manipulator
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is
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in
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fact
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an
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URL
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Handler.
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So,
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it
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will
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process
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every
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bundle
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using
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a
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special
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URL
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prefix.
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To
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use
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it,
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just
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follows
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the
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below
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instructions:
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- Install
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- and
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- Start
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- the
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- URL
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- Handler
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- *
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This
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- is
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- a
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- requirement.
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- You
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- must
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- install
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- and
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- start
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- the
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- URL
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- handler
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- as
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- well
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- as
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- iPOJO
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- (core).
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- The
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- URL
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- Handler
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- is
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- build
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- by
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- the
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- online-manipulator
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- iPOJO
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- sub-project.
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On
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- Felix
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- you
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- can
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- either
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- use
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- the
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start
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- command
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- from
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- the
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- shell
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- of
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- OBR:
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Shell |
---|
...
Command |
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...
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obr |
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start |
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"Apache |
...
Felix |
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iPOJO |
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URL |
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Handler" |
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- Install
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- a
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- bundle
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- using
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- the
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ipojo:
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- URL
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- prefix
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Using
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- the
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- handler
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- is
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- quite
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- easy.
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- When
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- you
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- want
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- to
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- deploy
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- a
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- non-manipulated
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- iPOJO
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- bundle
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- just
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- use
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- an
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- url
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- like
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Code Block
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install ipojo:file:/.../bundle.jar
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The
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complete
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URL
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syntax
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is
Code Block |
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} install ipojo:bundle_url[!metadata_url] {code} |
When
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using
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the
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ipojo:
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prefix,
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the
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OSGi
...
platform
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delegates
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the
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loading
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to
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the
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url
...
handler
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manipulating
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the
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bundle
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before
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its
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installation.
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This
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manipulation
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is
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exactly
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the
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same
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as
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the
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offline
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manipulation.
Dealing with metadata
If the installed bundle contains a metadata.xml
file either in its root or in the META-INF
directory, the online manipulator will use it. However, you can also provide an external metadata.xml
file by indicating the url of the file like in
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h2. Dealing with metadata If the installed bundle contains a {{metadata.xml}} file either in its root or in the {{META-INF}} directory, the online manipulator will use it. However, you can also provide an external {{metadata.xml}} file by indicating the url of the file like in {code} install ipojo:bundle_url!metadata_url {code} |
If
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you
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provide
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such
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url,
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it
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will
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override
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the
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contained
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metadata.xml
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file.
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