Class MultipleParentClassLoader.Builder
- java.lang.Object
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- net.bytebuddy.dynamic.loading.MultipleParentClassLoader.Builder
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- Enclosing class:
- MultipleParentClassLoader
@Enhance public static class MultipleParentClassLoader.Builder extends java.lang.Object
A builder to collect class loader and that creates aMultipleParentClassLoader
only if multiple or noClassLoader
s are found in the process. If exactly a single class loader is found, this class loader is returned. All class loaders are applied in their collection order with the exception of the bootstrap class loader which is represented bynull
and which is an implicit parent of any class loader.
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Field Summary
Fields Modifier and Type Field Description private java.util.List<? extends java.lang.ClassLoader>
classLoaders
The class loaders that were collected.private static int
ONLY
Indicates the first index of a list.private boolean
sealed
true
if the created class loader is sealed.
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Constructor Summary
Constructors Modifier Constructor Description Builder()
Creates a new builder without any class loaders.Builder(boolean sealed)
Creates a new builder without any class loaders.private
Builder(java.util.List<? extends java.lang.ClassLoader> classLoaders, boolean sealed)
Creates a new builder.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description MultipleParentClassLoader.Builder
append(java.lang.Class<?>... type)
Appends the class loaders of the given types.MultipleParentClassLoader.Builder
append(java.lang.ClassLoader... classLoader)
Appends the given class loaders if they were not yet collected.MultipleParentClassLoader.Builder
append(java.util.Collection<? extends java.lang.Class<?>> types)
Appends the class loaders of the given types if those class loaders were not yet collected.MultipleParentClassLoader.Builder
append(java.util.List<? extends java.lang.ClassLoader> classLoaders)
Appends the given class loaders if they were not yet appended.MultipleParentClassLoader.Builder
appendMostSpecific(java.lang.Class<?>... type)
Appends the class loaders of the given types but filters any duplicates within the hierarchy of class loaders.MultipleParentClassLoader.Builder
appendMostSpecific(java.lang.ClassLoader... classLoader)
Appends the given class loaders but removes any class loaders that are the parent of any previously registered class loader.MultipleParentClassLoader.Builder
appendMostSpecific(java.util.Collection<? extends java.lang.Class<?>> types)
Appends the class loaders of the given types but filters any duplicates within the hierarchy of class loaders.MultipleParentClassLoader.Builder
appendMostSpecific(java.util.List<? extends java.lang.ClassLoader> classLoaders)
Appends the given class loaders but removes any class loaders that are the parent of any previously registered class loader.java.lang.ClassLoader
build()
Returns the only class loader that was appended if exactly one class loader was appended or a multiple parent class loader as a parent of all supplied class loader and with the bootstrap class loader as an implicit parent.java.lang.ClassLoader
build(java.lang.ClassLoader parent)
Returns the only class loader that was appended if exactly one class loader was appended or a multiple parent class loader as a parent of all supplied class loader and with the bootstrap class loader as an implicit parent.private java.lang.ClassLoader
doBuild(java.lang.ClassLoader parent)
Creates a multiple parent class loader with an explicit parent.MultipleParentClassLoader.Builder
filter(ElementMatcher<? super java.lang.ClassLoader> matcher)
Only retains all class loaders that match the given matcher.
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Field Detail
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ONLY
private static final int ONLY
Indicates the first index of a list.- See Also:
- Constant Field Values
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sealed
private final boolean sealed
true
if the created class loader is sealed.
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classLoaders
private final java.util.List<? extends java.lang.ClassLoader> classLoaders
The class loaders that were collected.
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Constructor Detail
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Builder
public Builder()
Creates a new builder without any class loaders.
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Builder
public Builder(boolean sealed)
Creates a new builder without any class loaders.- Parameters:
sealed
-true
if the created class loader is sealed.
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Builder
private Builder(java.util.List<? extends java.lang.ClassLoader> classLoaders, boolean sealed)
Creates a new builder.- Parameters:
classLoaders
- The class loaders that were collected until now.sealed
-true
if the created class loader is sealed.
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Method Detail
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append
public MultipleParentClassLoader.Builder append(java.lang.Class<?>... type)
Appends the class loaders of the given types. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader.- Parameters:
type
- The types of which to collect the class loaders.- Returns:
- A new builder instance with the additional class loaders of the provided types if they were not yet collected.
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append
public MultipleParentClassLoader.Builder append(java.util.Collection<? extends java.lang.Class<?>> types)
Appends the class loaders of the given types if those class loaders were not yet collected. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader.- Parameters:
types
- The types of which to collect the class loaders.- Returns:
- A new builder instance with the additional class loaders.
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append
public MultipleParentClassLoader.Builder append(java.lang.ClassLoader... classLoader)
Appends the given class loaders if they were not yet collected. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader.- Parameters:
classLoader
- The class loaders to be collected.- Returns:
- A new builder instance with the additional class loaders.
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append
public MultipleParentClassLoader.Builder append(java.util.List<? extends java.lang.ClassLoader> classLoaders)
Appends the given class loaders if they were not yet appended. The bootstrap class loader is never appended as it is an implicit parent of any class loader.- Parameters:
classLoaders
- The class loaders to collected.- Returns:
- A new builder instance with the additional class loaders.
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appendMostSpecific
public MultipleParentClassLoader.Builder appendMostSpecific(java.lang.Class<?>... type)
Appends the class loaders of the given types but filters any duplicates within the hierarchy of class loaders. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader. Class loaders are prepended to the list of class loaders.- Parameters:
type
- The types of which to collect the class loaders.- Returns:
- A new builder instance with the additional class loaders of the provided types if they were not yet collected.
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appendMostSpecific
public MultipleParentClassLoader.Builder appendMostSpecific(java.util.Collection<? extends java.lang.Class<?>> types)
Appends the class loaders of the given types but filters any duplicates within the hierarchy of class loaders. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader. Class loaders are prepended to the list of class loaders.- Parameters:
types
- The types of which to collect the class loaders.- Returns:
- A new builder instance with the additional class loaders.
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appendMostSpecific
public MultipleParentClassLoader.Builder appendMostSpecific(java.lang.ClassLoader... classLoader)
Appends the given class loaders but removes any class loaders that are the parent of any previously registered class loader. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader.- Parameters:
classLoader
- The class loaders to be collected.- Returns:
- A new builder instance with the additional class loaders.
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appendMostSpecific
public MultipleParentClassLoader.Builder appendMostSpecific(java.util.List<? extends java.lang.ClassLoader> classLoaders)
Appends the given class loaders but removes any class loaders that are the parent of any previously registered class loader. The bootstrap class loader is implicitly skipped as it is an implicit parent of any class loader.- Parameters:
classLoaders
- The class loaders to collected.- Returns:
- A new builder instance with the additional class loaders.
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filter
public MultipleParentClassLoader.Builder filter(ElementMatcher<? super java.lang.ClassLoader> matcher)
Only retains all class loaders that match the given matcher.- Parameters:
matcher
- The matcher to be used for filtering.- Returns:
- A builder that does not longer consider any appended class loaders that matched the provided matcher.
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build
public java.lang.ClassLoader build()
Returns the only class loader that was appended if exactly one class loader was appended or a multiple parent class loader as a parent of all supplied class loader and with the bootstrap class loader as an implicit parent. If no class loader was appended, a new class loader is created that declares no parents. If a class loader is created, its explicit parent is set to be the bootstrap class loader.
Important: Byte Buddy does not provide any access control for the creation of the class loader. It is the responsibility of the user of this builder to provide such privileges.
- Returns:
- A suitable class loader.
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build
public java.lang.ClassLoader build(java.lang.ClassLoader parent)
Returns the only class loader that was appended if exactly one class loader was appended or a multiple parent class loader as a parent of all supplied class loader and with the bootstrap class loader as an implicit parent. If no class loader was appended, or if only the supplied parent to this method was included, this class loader is returned,
Important: Byte Buddy does not provide any access control for the creation of the class loader. It is the responsibility of the user of this builder to provide such privileges.
- Parameters:
parent
- The class loader's contractual parent which is accessible viaClassLoader.getParent()
. If this class loader is also included in the appended class loaders, it is not- Returns:
- A suitable class loader.
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doBuild
private java.lang.ClassLoader doBuild(java.lang.ClassLoader parent)
Creates a multiple parent class loader with an explicit parent.- Parameters:
parent
- The explicit parent class loader.- Returns:
- A multiple parent class loader that includes all collected class loaders and the explicit parent.
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