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java.lang.Objectorg.aspectj.weaver.tools.WeavingAdaptor
public class WeavingAdaptor
This adaptor allows the AspectJ compiler to be embedded in an existing system to facilitate load-time weaving. It provides an interface for a weaving class loader to provide a classpath to be woven by a set of aspects. A callback is supplied to allow a class loader to define classes generated by the compiler during the weaving process.
A weaving class loader should create a WeavingAdaptor
before any classes are defined, typically during construction.
The set of aspects passed to the adaptor is fixed for the lifetime of the adaptor although the classpath can be augmented. A
system property can be set to allow verbose weaving messages to be written to the console.
Field Summary | |
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BcelObjectType |
delegateForCurrentClass
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static java.lang.String |
SHOW_WEAVE_INFO_PROPERTY
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static java.lang.String |
TRACE_MESSAGES_PROPERTY
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static java.lang.String |
WEAVING_ADAPTOR_VERBOSE
System property used to turn on verbose weaving messages |
Constructor Summary | |
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WeavingAdaptor(GeneratedClassHandler handler,
java.net.URL[] classURLs,
java.net.URL[] aspectURLs)
Construct a WeavingAdator with a reference to a GeneratedClassHandler , a full search path for resolving classes
and a complete set of aspects. |
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WeavingAdaptor(WeavingClassLoader loader)
Construct a WeavingAdaptor with a reference to a weaving class loader. |
Method Summary | |
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void |
addURL(java.net.URL url)
Appends URL to path used by the WeavingAdptor to resolve classes |
java.lang.String |
getContextId()
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IMessageHolder |
getMessageHolder()
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byte[] |
weaveClass(java.lang.String name,
byte[] bytes)
Weave a class using aspects previously supplied to the adaptor. |
byte[] |
weaveClass(java.lang.String name,
byte[] bytes,
boolean mustWeave)
Weave a class using aspects previously supplied to the adaptor. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String WEAVING_ADAPTOR_VERBOSE
public static final java.lang.String SHOW_WEAVE_INFO_PROPERTY
public static final java.lang.String TRACE_MESSAGES_PROPERTY
public BcelObjectType delegateForCurrentClass
Constructor Detail |
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public WeavingAdaptor(WeavingClassLoader loader)
loader
- instance of ClassLoader
public WeavingAdaptor(GeneratedClassHandler handler, java.net.URL[] classURLs, java.net.URL[] aspectURLs)
GeneratedClassHandler
, a full search path for resolving classes
and a complete set of aspects. The search path must include classes loaded by the class loader constructing the
WeavingAdaptor and all its parents in the hierarchy.
handler
- GeneratedClassHandler
classURLs
- the URLs from which to resolve classesaspectURLs
- the aspects used to weave classes defined by this class loaderMethod Detail |
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public IMessageHolder getMessageHolder()
public void addURL(java.net.URL url)
url
- to be appended to search pathpublic byte[] weaveClass(java.lang.String name, byte[] bytes) throws java.io.IOException
name
- the name of the classbytes
- the class bytes
java.io.IOException
- weave failedpublic byte[] weaveClass(java.lang.String name, byte[] bytes, boolean mustWeave) throws java.io.IOException
name
- the name of the classbytes
- the class bytesmustWeave
- if true then this class *must* get woven (used for concrete aspects generated from XML)
java.io.IOException
- weave failedpublic java.lang.String getContextId()
getContextId
in interface IMessageContext
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