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:

java.io.Serializable, java.lang.Comparable<Artifact<?>>

Direct Known Subclasses:

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

public abstract class Artifact<C extends Artifact<C>>
extends java.lang.Object
implements java.lang.Comparable<Artifact<?>>, java.io.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

Artifact

protected Artifact(java.lang.Class<? extends Linker> linker)

Constructor.

Parameters:

linker - the type of Linker that instantiated the Artifact.

compareTo

public final int compareTo(Artifact<?> o)

Specified by:

compareTo in interface java.lang.Comparable<Artifact<?>>

equals

public final boolean equals(java.lang.Object obj)

Delegates to compareTo(Artifact).

Overrides:

equals in class java.lang.Object

getLinker

public final java.lang.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 java.lang.Object

isTransferableFromShards

public final boolean isTransferableFromShards()

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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.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 java.lang.Class<C> getComparableArtifactType()

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