Package com.google.common.jimfs
Class OwnerAttributeProvider
- java.lang.Object
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- com.google.common.jimfs.AttributeProvider
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- com.google.common.jimfs.OwnerAttributeProvider
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final class OwnerAttributeProvider extends AttributeProvider
Attribute provider that provides theFileOwnerAttributeView
("owner").
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
OwnerAttributeProvider.View
Implementation ofFileOwnerAttributeView
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Field Summary
Fields Modifier and Type Field Description private static com.google.common.collect.ImmutableSet<java.lang.String>
ATTRIBUTES
private static java.nio.file.attribute.UserPrincipal
DEFAULT_OWNER
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Constructor Summary
Constructors Constructor Description OwnerAttributeProvider()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description com.google.common.collect.ImmutableMap<java.lang.String,?>
defaultValues(java.util.Map<java.lang.String,?> userProvidedDefaults)
Returns a map containing the default attribute values for this provider.com.google.common.collect.ImmutableSet<java.lang.String>
fixedAttributes()
Returns the set of attributes that are always available from this provider.@Nullable java.lang.Object
get(File file, java.lang.String attribute)
Returns the value of the given attribute in the given file or null if the attribute is not supported by this provider.java.lang.String
name()
Returns the view name that's used to get attributes from this provider.void
set(File file, java.lang.String view, java.lang.String attribute, java.lang.Object value, boolean create)
Sets the value of the given attribute in the given file object.java.nio.file.attribute.FileOwnerAttributeView
view(FileLookup lookup, com.google.common.collect.ImmutableMap<java.lang.String,java.nio.file.attribute.FileAttributeView> inheritedViews)
Returns a view of the file located by the given lookup callback.java.lang.Class<java.nio.file.attribute.FileOwnerAttributeView>
viewType()
Returns the type of the view interface that this provider supports.-
Methods inherited from class com.google.common.jimfs.AttributeProvider
attributes, attributesType, checkNotCreate, checkType, inherits, invalidType, readAttributes, supports, unsettable
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Method Detail
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name
public java.lang.String name()
Description copied from class:AttributeProvider
Returns the view name that's used to get attributes from this provider.- Specified by:
name
in classAttributeProvider
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fixedAttributes
public com.google.common.collect.ImmutableSet<java.lang.String> fixedAttributes()
Description copied from class:AttributeProvider
Returns the set of attributes that are always available from this provider.- Specified by:
fixedAttributes
in classAttributeProvider
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defaultValues
public com.google.common.collect.ImmutableMap<java.lang.String,?> defaultValues(java.util.Map<java.lang.String,?> userProvidedDefaults)
Description copied from class:AttributeProvider
Returns a map containing the default attribute values for this provider. The keys of the map are attribute identifier strings (in "view:attribute" form) and the value for each is the default value that should be set for that attribute when creating a new file.The given map should be in the same format and contains user-provided default values. If the user provided any default values for attributes handled by this provider, those values should be checked to ensure they are of the correct type. Additionally, if any changes to a user-provided attribute are necessary (for example, creating an immutable defensive copy), that should be done. The resulting values should be included in the result map along with default values for any attributes the user did not provide a value for.
- Overrides:
defaultValues
in classAttributeProvider
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get
public @Nullable java.lang.Object get(File file, java.lang.String attribute)
Description copied from class:AttributeProvider
Returns the value of the given attribute in the given file or null if the attribute is not supported by this provider.- Specified by:
get
in classAttributeProvider
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set
public void set(File file, java.lang.String view, java.lang.String attribute, java.lang.Object value, boolean create)
Description copied from class:AttributeProvider
Sets the value of the given attribute in the given file object. Thecreate
parameter indicates whether or not the value is being set upon creation of a new file via a user-providedFileAttribute
.- Specified by:
set
in classAttributeProvider
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viewType
public java.lang.Class<java.nio.file.attribute.FileOwnerAttributeView> viewType()
Description copied from class:AttributeProvider
Returns the type of the view interface that this provider supports.- Specified by:
viewType
in classAttributeProvider
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view
public java.nio.file.attribute.FileOwnerAttributeView view(FileLookup lookup, com.google.common.collect.ImmutableMap<java.lang.String,java.nio.file.attribute.FileAttributeView> inheritedViews)
Description copied from class:AttributeProvider
Returns a view of the file located by the given lookup callback. The given map contains the views inherited by this view.- Specified by:
view
in classAttributeProvider
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