All Known Implementing Classes:

AbstractForwardingRepositorySystemSession, DefaultRepositorySystemSession
```
public interface RepositorySystemSession
```
Defines settings and components that control the repository system. Once initialized, the session object itself is supposed to be immutable and hence can safely be shared across an entire application and any concurrent threads reading it. Components that wish to tweak some aspects of an existing session should use the copy constructor of DefaultRepositorySystemSession and its mutators to derive a custom session.

Restriction:

This interface is not intended to be extended by clients.

Restriction:

This interface is not intended to be implemented by clients.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ArtifactDescriptorPolicy`	`getArtifactDescriptorPolicy()`	Gets the policy which controls how errors related to reading artifact descriptors should be handled.
`ArtifactTypeRegistry`	`getArtifactTypeRegistry()`	Gets the registry of artifact types recognized by this session, for instance when processing artifact descriptors.
`AuthenticationSelector`	`getAuthenticationSelector()`	Gets the authentication selector to use for repositories discovered in artifact descriptors.
`RepositoryCache`	`getCache()`	Gets the cache the repository system may use to save data for future reuse during the session.
`String`	`getChecksumPolicy()`	Gets the global checksum policy.
`Map<String,Object>`	`getConfigProperties()`	Gets the configuration properties used to tweak internal aspects of the repository system (e.g.
`SessionData`	`getData()`	Gets the custom data associated with this session.
`DependencyGraphTransformer`	`getDependencyGraphTransformer()`	Gets the dependency graph transformer to use for building dependency graphs.
`DependencyManager`	`getDependencyManager()`	Gets the dependency manager to use for building dependency graphs.
`DependencySelector`	`getDependencySelector()`	Gets the dependency selector to use for building dependency graphs.
`DependencyTraverser`	`getDependencyTraverser()`	Gets the dependency traverser to use for building dependency graphs.
`FileTransformerManager`	`getFileTransformerManager()`	Get the file transformer manager
`LocalRepository`	`getLocalRepository()`	Gets the local repository used during this session.
`LocalRepositoryManager`	`getLocalRepositoryManager()`	Gets the local repository manager used during this session.
`MirrorSelector`	`getMirrorSelector()`	Gets the mirror selector to use for repositories discovered in artifact descriptors.
`ProxySelector`	`getProxySelector()`	Gets the proxy selector to use for repositories discovered in artifact descriptors.
`RepositoryListener`	`getRepositoryListener()`	Gets the listener being notified of actions in the repository system.
`ResolutionErrorPolicy`	`getResolutionErrorPolicy()`	Gets the policy which controls whether resolutions errors from remote repositories should be cached.
`Map<String,String>`	`getSystemProperties()`	Gets the system properties to use, e.g.
`TransferListener`	`getTransferListener()`	Gets the listener being notified of uploads/downloads by the repository system.
`String`	`getUpdatePolicy()`	Gets the global update policy.
`Map<String,String>`	`getUserProperties()`	Gets the user properties to use, e.g.
`VersionFilter`	`getVersionFilter()`	Gets the version filter to use for building dependency graphs.
`WorkspaceReader`	`getWorkspaceReader()`	Gets the workspace reader used during this session.
`boolean`	`isIgnoreArtifactDescriptorRepositories()`	Indicates whether repositories declared in artifact descriptors should be ignored during transitive dependency collection.
`boolean`	`isOffline()`	Indicates whether the repository system operates in offline mode and avoids/refuses any access to remote repositories.

- Method Detail
  - isOffline
```
boolean isOffline()
```
    Indicates whether the repository system operates in offline mode and avoids/refuses any access to remote repositories.
    
    Returns:
    
    true if the repository system is in offline mode, false otherwise.
  - isIgnoreArtifactDescriptorRepositories
```
boolean isIgnoreArtifactDescriptorRepositories()
```
    Indicates whether repositories declared in artifact descriptors should be ignored during transitive dependency collection. If enabled, only the repositories originally provided with the collect request will be considered.
    
    Returns:
    
    true if additional repositories from artifact descriptors are ignored, false to merge those with the originally specified repositories.
  - getResolutionErrorPolicy
```
ResolutionErrorPolicy getResolutionErrorPolicy()
```
    Gets the policy which controls whether resolutions errors from remote repositories should be cached.
    
    Returns:
    
    The resolution error policy for this session or null if resolution errors should generally not be cached.
  - getArtifactDescriptorPolicy
```
ArtifactDescriptorPolicy getArtifactDescriptorPolicy()
```
    Gets the policy which controls how errors related to reading artifact descriptors should be handled.
    
    Returns:
    
    The descriptor error policy for this session or null if descriptor errors should generally not be tolerated.
  - getChecksumPolicy
```
String getChecksumPolicy()
```
    Gets the global checksum policy. If set, the global checksum policy overrides the checksum policies of the remote repositories being used for resolution.
    
    Returns:
    
    The global checksum policy or null/empty if not set and the per-repository policies apply.
    
    See Also:
    
    RepositoryPolicy.CHECKSUM_POLICY_FAIL, RepositoryPolicy.CHECKSUM_POLICY_IGNORE, RepositoryPolicy.CHECKSUM_POLICY_WARN
  - getUpdatePolicy
```
String getUpdatePolicy()
```
    Gets the global update policy. If set, the global update policy overrides the update policies of the remote repositories being used for resolution.
    
    Returns:
    
    The global update policy or null/empty if not set and the per-repository policies apply.
    
    See Also:
    
    RepositoryPolicy.UPDATE_POLICY_ALWAYS, RepositoryPolicy.UPDATE_POLICY_DAILY, RepositoryPolicy.UPDATE_POLICY_NEVER
  - getLocalRepository
```
LocalRepository getLocalRepository()
```
    Gets the local repository used during this session. This is a convenience method for LocalRepositoryManager.getRepository().
    
    Returns:
    
    The local repository being during this session, never null.
  - getLocalRepositoryManager
```
LocalRepositoryManager getLocalRepositoryManager()
```
    Gets the local repository manager used during this session.
    
    Returns:
    
    The local repository manager used during this session, never null.
  - getWorkspaceReader
```
WorkspaceReader getWorkspaceReader()
```
    Gets the workspace reader used during this session. If set, the workspace reader will usually be consulted first to resolve artifacts.
    
    Returns:
    
    The workspace reader for this session or null if none.
  - getRepositoryListener
```
RepositoryListener getRepositoryListener()
```
    Gets the listener being notified of actions in the repository system.
    
    Returns:
    
    The repository listener or null if none.
  - getTransferListener
```
TransferListener getTransferListener()
```
    Gets the listener being notified of uploads/downloads by the repository system.
    
    Returns:
    
    The transfer listener or null if none.
  - getSystemProperties
```
Map<String,String> getSystemProperties()
```
    Gets the system properties to use, e.g. for processing of artifact descriptors. System properties are usually collected from the runtime environment like System.getProperties() and environment variables.
    
    Returns:
    
    The (read-only) system properties, never null.
  - getUserProperties
```
Map<String,String> getUserProperties()
```
    Gets the user properties to use, e.g. for processing of artifact descriptors. User properties are similar to system properties but are set on the discretion of the user and hence are considered of higher priority than system properties.
    
    Returns:
    
    The (read-only) user properties, never null.
  - getConfigProperties
```
Map<String,Object> getConfigProperties()
```
    Gets the configuration properties used to tweak internal aspects of the repository system (e.g. thread pooling, connector-specific behavior, etc.)
    
    Returns:
    
    The (read-only) configuration properties, never null.
    
    See Also:
    
    ConfigurationProperties
  - getMirrorSelector
```
MirrorSelector getMirrorSelector()
```
    Gets the mirror selector to use for repositories discovered in artifact descriptors. Note that this selector is not used for remote repositories which are passed as request parameters to the repository system, those repositories are supposed to denote the effective repositories.
    
    Returns:
    
    The mirror selector to use, never null.
    
    See Also:
    
    RepositorySystem.newResolutionRepositories(RepositorySystemSession, java.util.List)
  - getProxySelector
```
ProxySelector getProxySelector()
```
    Gets the proxy selector to use for repositories discovered in artifact descriptors. Note that this selector is not used for remote repositories which are passed as request parameters to the repository system, those repositories are supposed to have their proxy (if any) already set.
    
    Returns:
    
    The proxy selector to use, never null.
    
    See Also:
    
    RemoteRepository.getProxy(), RepositorySystem.newResolutionRepositories(RepositorySystemSession, java.util.List)
  - getAuthenticationSelector
```
AuthenticationSelector getAuthenticationSelector()
```
    Gets the authentication selector to use for repositories discovered in artifact descriptors. Note that this selector is not used for remote repositories which are passed as request parameters to the repository system, those repositories are supposed to have their authentication (if any) already set.
    
    Returns:
    
    The authentication selector to use, never null.
    
    See Also:
    
    RemoteRepository.getAuthentication(), RepositorySystem.newResolutionRepositories(RepositorySystemSession, java.util.List)
  - getArtifactTypeRegistry
```
ArtifactTypeRegistry getArtifactTypeRegistry()
```
    Gets the registry of artifact types recognized by this session, for instance when processing artifact descriptors.
    
    Returns:
    
    The artifact type registry, never null.
  - getDependencyTraverser
```
DependencyTraverser getDependencyTraverser()
```
    Gets the dependency traverser to use for building dependency graphs.
    
    Returns:
    
    The dependency traverser to use for building dependency graphs or null if dependencies are unconditionally traversed.
  - getDependencyManager
```
DependencyManager getDependencyManager()
```
    Gets the dependency manager to use for building dependency graphs.
    
    Returns:
    
    The dependency manager to use for building dependency graphs or null if dependency management is not performed.
  - getDependencySelector
```
DependencySelector getDependencySelector()
```
    Gets the dependency selector to use for building dependency graphs.
    
    Returns:
    
    The dependency selector to use for building dependency graphs or null if dependencies are unconditionally included.
  - getVersionFilter
```
VersionFilter getVersionFilter()
```
    Gets the version filter to use for building dependency graphs.
    
    Returns:
    
    The version filter to use for building dependency graphs or null if versions aren't filtered.
  - getDependencyGraphTransformer
```
DependencyGraphTransformer getDependencyGraphTransformer()
```
    Gets the dependency graph transformer to use for building dependency graphs.
    
    Returns:
    
    The dependency graph transformer to use for building dependency graphs or null if none.
  - getData
```
SessionData getData()
```
    Gets the custom data associated with this session.
    
    Returns:
    
    The session data, never null.
  - getCache
```
RepositoryCache getCache()
```
    Gets the cache the repository system may use to save data for future reuse during the session.
    
    Returns:
    
    The repository cache or null if none.
  - getFileTransformerManager
```
FileTransformerManager getFileTransformerManager()
```
    Get the file transformer manager
    
    Returns:
    
    the manager, never null

Interface RepositorySystemSession

Method Summary

Method Detail

isOffline

isIgnoreArtifactDescriptorRepositories

getResolutionErrorPolicy

getArtifactDescriptorPolicy

getChecksumPolicy

getUpdatePolicy

getLocalRepository

getLocalRepositoryManager

getWorkspaceReader

getRepositoryListener

getTransferListener

getSystemProperties

getUserProperties

getConfigProperties

getMirrorSelector

getProxySelector

getAuthenticationSelector

getArtifactTypeRegistry

getDependencyTraverser

getDependencyManager

getDependencySelector

getVersionFilter

getDependencyGraphTransformer

getData

getCache

getFileTransformerManager