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The application programming interface for the repository system.
package org.eclipse.aether.resolution;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import org.eclipse.aether.RepositorySystem;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.RequestTrace;
import org.eclipse.aether.metadata.Metadata;
import org.eclipse.aether.repository.RemoteRepository;
/**
* A request to resolve metadata from either a remote repository or the local repository.
*
* @see RepositorySystem#resolveMetadata(RepositorySystemSession, java.util.Collection)
* @see Metadata#getFile()
*/
public final class MetadataRequest
{
private Metadata metadata;
private RemoteRepository repository;
private String context = "";
private boolean deleteLocalCopyIfMissing;
private boolean favorLocalRepository;
private RequestTrace trace;
/**
* Creates an uninitialized request.
*/
public MetadataRequest()
{
// enables default constructor
}
/**
* Creates a request to resolve the specified metadata from the local repository.
*
* @param metadata The metadata to resolve, may be {@code null}.
*/
public MetadataRequest( Metadata metadata )
{
setMetadata( metadata );
}
/**
* Creates a request with the specified properties.
*
* @param metadata The metadata to resolve, may be {@code null}.
* @param repository The repository to resolve the metadata from, may be {@code null} to resolve from the local
* repository.
* @param context The context in which this request is made, may be {@code null}.
*/
public MetadataRequest( Metadata metadata, RemoteRepository repository, String context )
{
setMetadata( metadata );
setRepository( repository );
setRequestContext( context );
}
/**
* Gets the metadata to resolve.
*
* @return The metadata or {@code null} if not set.
*/
public Metadata getMetadata()
{
return metadata;
}
/**
* Sets the metadata to resolve.
*
* @param metadata The metadata, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setMetadata( Metadata metadata )
{
this.metadata = metadata;
return this;
}
/**
* Gets the repository from which the metadata should be resolved.
*
* @return The repository or {@code null} to resolve from the local repository.
*/
public RemoteRepository getRepository()
{
return repository;
}
/**
* Sets the repository from which the metadata should be resolved.
*
* @param repository The repository, may be {@code null} to resolve from the local repository.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setRepository( RemoteRepository repository )
{
this.repository = repository;
return this;
}
/**
* Gets the context in which this request is made.
*
* @return The context, never {@code null}.
*/
public String getRequestContext()
{
return context;
}
/**
* Sets the context in which this request is made.
*
* @param context The context, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setRequestContext( String context )
{
this.context = ( context != null ) ? context : "";
return this;
}
/**
* Indicates whether the locally cached copy of the metadata should be removed if the corresponding file does not
* exist (any more) in the remote repository.
*
* @return {@code true} if locally cached metadata should be deleted if no corresponding remote file exists,
* {@code false} to keep the local copy.
*/
public boolean isDeleteLocalCopyIfMissing()
{
return deleteLocalCopyIfMissing;
}
/**
* Controls whether the locally cached copy of the metadata should be removed if the corresponding file does not
* exist (any more) in the remote repository.
*
* @param deleteLocalCopyIfMissing {@code true} if locally cached metadata should be deleted if no corresponding
* remote file exists, {@code false} to keep the local copy.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setDeleteLocalCopyIfMissing( boolean deleteLocalCopyIfMissing )
{
this.deleteLocalCopyIfMissing = deleteLocalCopyIfMissing;
return this;
}
/**
* Indicates whether the metadata resolution should be suppressed if the corresponding metadata of the local
* repository is up-to-date according to the update policy of the remote repository. In this case, the metadata
* resolution will even be suppressed if no local copy of the remote metadata exists yet.
*
* @return {@code true} to suppress resolution of remote metadata if the corresponding metadata of the local
* repository is up-to-date, {@code false} to resolve the remote metadata normally according to the update
* policy.
*/
public boolean isFavorLocalRepository()
{
return favorLocalRepository;
}
/**
* Controls resolution of remote metadata when already corresponding metadata of the local repository exists. In
* cases where the local repository's metadata is sufficient and going to be preferred, resolution of the remote
* metadata can be suppressed to avoid unnecessary network access.
*
* @param favorLocalRepository {@code true} to suppress resolution of remote metadata if the corresponding metadata
* of the local repository is up-to-date, {@code false} to resolve the remote metadata normally according
* to the update policy.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setFavorLocalRepository( boolean favorLocalRepository )
{
this.favorLocalRepository = favorLocalRepository;
return this;
}
/**
* Gets the trace information that describes the higher level request/operation in which this request is issued.
*
* @return The trace information about the higher level operation or {@code null} if none.
*/
public RequestTrace getTrace()
{
return trace;
}
/**
* Sets the trace information that describes the higher level request/operation in which this request is issued.
*
* @param trace The trace information about the higher level operation, may be {@code null}.
* @return This request for chaining, never {@code null}.
*/
public MetadataRequest setTrace( RequestTrace trace )
{
this.trace = trace;
return this;
}
@Override
public String toString()
{
return getMetadata() + " < " + getRepository();
}
}