com.google.gwt.core.ext.linker

Class Artifact<C extends Artifact<C>>

java.lang.Object

com.google.gwt.core.ext.linker.Artifact<C>

Type Parameters:

C - The type of Artifact interface that the Artifact can be compared to.

All Implemented Interfaces:

Serializable, Comparable<Artifact<?>>

Direct Known Subclasses:

CompilationMetricsArtifact, CompilationResult, EmittedArtifact, ModuleMetricsArtifact, PrecompilationMetricsArtifact, PropertiesMappingArtifact, RpcLogArtifact, RpcPolicyFileArtifact, ScriptReference, SelectionInformation, StylesheetReference, SymbolMapsLinker.ScriptFragmentEditsArtifact

public abstract class Artifact<C extends Artifact<C>>
extends Object
implements Comparable<Artifact<?>>, Serializable

A base type for all artifacts relating to the link process. In order to ensure stable output between runs of the compiler, Artifact types must implement a stable comparison between instances of a relevant base type (the exact comparison order is irrelevant).

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Artifact(Class<? extends Linker> linker) Constructor.

Method Summary

Modifier and Type	Method and Description
int	compareTo(Artifact<?> o)
protected abstract int	compareToComparableArtifact(C o) Performs comparison with an artifact of a compatible base type.
boolean	equals(Object obj) Delegates to compareTo(Artifact).
protected abstract Class<C>	getComparableArtifactType() Returns the base type to use for comparisons between Artifacts.
Class<? extends Linker>	getLinker() Returns the Linker that created the Artifact.
abstract int	hashCode() The class which is returned from getComparableArtifactType() must declare a final implementation which returns the same hash code for objects for which compareToComparableArtifact(Artifact) returns 0.
boolean	isTransferableFromShards() Returns whether the Transferable annotation is present on this class.
String	toString()

Methods inherited from class java.lang.Object

finalize, getClass

Methods inherited from interface java.lang.Comparable

$isInstance

Constructor Detail

Artifact

protected Artifact(Class<? extends Linker> linker)

Constructor.

Parameters:

linker - the type of Linker that instantiated the Artifact.

Method Detail

compareTo

public final int compareTo(Artifact<?> o)

Specified by:

compareTo in interface Comparable<Artifact<?>>

equals

public final boolean equals(Object obj)

Delegates to compareTo(Artifact).

Overrides:

equals in class Object

getLinker

public final Class<? extends Linker> getLinker()

Returns the Linker that created the Artifact.

hashCode

public abstract int hashCode()

The class which is returned from getComparableArtifactType() must declare a final implementation which returns the same hash code for objects for which compareToComparableArtifact(Artifact) returns 0.

Overrides:

hashCode in class Object

isTransferableFromShards

public final boolean isTransferableFromShards()

Returns whether the Transferable annotation is present on this class. See Transferable for the implications.

toString

public String toString()

Overrides:

toString in class Object

compareToComparableArtifact

protected abstract int compareToComparableArtifact(C o)

Performs comparison with an artifact of a compatible base type. Objects which compare to 0 are assumed equal, and must return the same hashCode().

getComparableArtifactType

protected abstract Class<C> getComparableArtifactType()

Returns the base type to use for comparisons between Artifacts. All concrete implementations of this methods must be final.