public static enum AgentBuilder.DescriptionStrategy.Default extends Enum<AgentBuilder.DescriptionStrategy.Default> implements AgentBuilder.DescriptionStrategy
AgentBuilder.DescriptionStrategy
.AgentBuilder.DescriptionStrategy.Default, AgentBuilder.DescriptionStrategy.SuperTypeLoading
Enum Constant and Description |
---|
HYBRID
A description type strategy represents a type as a
TypeDescription.ForLoadedType if a
retransformation or redefinition is applied on a type. |
POOL_FIRST
|
POOL_ONLY
A description strategy that always describes Java types using a
TypePool . |
Modifier and Type | Method and Description |
---|---|
boolean |
isLoadedFirst()
Indicates if this description strategy makes use of loaded type information and yields a different type description if no loaded type is available.
|
static AgentBuilder.DescriptionStrategy.Default |
valueOf(String name)
Returns the enum constant of this type with the specified name.
|
static AgentBuilder.DescriptionStrategy.Default[] |
values()
Returns an array containing the constants of this enum type, in
the order they are declared.
|
AgentBuilder.DescriptionStrategy |
withSuperTypeLoading()
Creates a description strategy that uses this strategy but loads any super type.
|
AgentBuilder.DescriptionStrategy |
withSuperTypeLoading(ExecutorService executorService)
Creates a description strategy that uses this strategy but loads any super type asynchronously.
|
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
apply
public static final AgentBuilder.DescriptionStrategy.Default HYBRID
TypeDescription.ForLoadedType
if a
retransformation or redefinition is applied on a type. Using a loaded type typically results in better performance as no
I/O is required for resolving type descriptions. However, any interaction with the type is carried out via the Java reflection
API. Using the reflection API triggers eager loading of any type that is part of a method or field signature. If any of these
types are missing from the class path, this eager loading will cause a NoClassDefFoundError
. Some Java code declares
optional dependencies to other classes which are only realized if the optional dependency is present. Such code relies on the
Java reflection API not being used for types using optional dependencies.public static final AgentBuilder.DescriptionStrategy.Default POOL_ONLY
A description strategy that always describes Java types using a TypePool
. This requires that any type - even if it is already
loaded and a Class
instance is available - is processed as a non-loaded type description. Doing so can cause overhead as processing
loaded types is supported very efficiently by a JVM.
Avoiding the usage of loaded types can improve robustness as this approach does not rely on the Java reflection API which triggers eager
validation of this loaded type which can fail an application if optional types are used by any types field or method signatures. Also, it
is possible to guarantee debugging meta data to be available also for retransformed or redefined types if a AgentBuilder.TypeStrategy
specifies
the extraction of such meta data.
public static final AgentBuilder.DescriptionStrategy.Default POOL_FIRST
A description strategy that always describes Java types using a TypePool
unless a type cannot be resolved by a pool and a loaded
Class
instance is available. Doing so can cause overhead as processing loaded types is supported very efficiently by a JVM.
Avoiding the usage of loaded types can improve robustness as this approach does not rely on the Java reflection API which triggers eager
validation of this loaded type which can fail an application if optional types are used by any types field or method signatures. Also, it
is possible to guarantee debugging meta data to be available also for retransformed or redefined types if a AgentBuilder.TypeStrategy
specifies
the extraction of such meta data.
public static AgentBuilder.DescriptionStrategy.Default[] values()
for (AgentBuilder.DescriptionStrategy.Default c : AgentBuilder.DescriptionStrategy.Default.values()) System.out.println(c);
public static AgentBuilder.DescriptionStrategy.Default valueOf(String name)
name
- the name of the enum constant to be returned.IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is nullpublic AgentBuilder.DescriptionStrategy withSuperTypeLoading()
AgentBuilder.DescriptionStrategy.SuperTypeLoading
public boolean isLoadedFirst()
isLoadedFirst
in interface AgentBuilder.DescriptionStrategy
true
if this description strategy prefers loaded type information when describing a type and only uses a type pool
if loaded type information is not available.public AgentBuilder.DescriptionStrategy withSuperTypeLoading(ExecutorService executorService)
executorService
- The executor service to use.AgentBuilder.DescriptionStrategy.SuperTypeLoading.Asynchronous
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