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package org.eclipse.team.core;
/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
import org.eclipse.core.resources.IFileModificationValidator;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNature;
import org.eclipse.core.resources.team.IMoveDeleteHook;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.team.core.internal.Policy;
import org.eclipse.team.internal.simpleAccess.SimpleAccessOperations;
/**
* A concrete subclass of <code>RepositoryProvider</code> is created for each
* project that is shared via a repository.
*
* @see RepositoryProviderType
*
* @since 2.0
*/
public abstract class RepositoryProvider implements IProjectNature {
/**
* Default constructor required for the resources plugin to instantiate this class from a
* extension definition.
*/
public RepositoryProvider() {
}
/**
* Configures the nature for the given project. This method is called after <code>setProject</code>
* and before the nature is added to the project. If an exception is generated during configuration
* of the project the nature will not be assigned to the project.
*
* @throws CoreException if the configuration fails.
*/
abstract public void configureProject() throws CoreException;
/**
* Configures the nature for the given project. This method is called after <code>setProject</code>
* and before the nature is added to the project.
* <p>
* The default behavior for <code>RepositoryProvider</code> subclasses is to fail the configuration
* if a provider is already associated with the given project. Subclasses cannot override this method
* but must instead override <code>configureProject</code>.
*
* @throws CoreException if this method fails. If the configuration fails the nature will not be added
* to the project.
* @see IProjectNature#configure
*/
final public void configure() throws CoreException {
RepositoryProvider provider = RepositoryProviderType.getProvider(getProject());
try {
configureProject();
} catch(CoreException e) {
try {
TeamPlugin.removeNatureFromProject(getProject(), getID(), null);
} catch(TeamException e2) {
throw new CoreException(new Status(IStatus.ERROR, TeamPlugin.ID, 0, Policy.bind("RepositoryProvider_Error_removing_nature_from_project___1") + provider, e2)); //$NON-NLS-1$
}
throw e;
}
}
abstract public String getID();
/*
* Provisional.
* Returns an object which implements a set of provider neutral operations for this
* provider. Answers <code>null</code> if the provider does not wish to support these
* operations.
*
* @return the repository operations or <code>null</code> if the provider does not
* support provider neutral operations.
*/
public SimpleAccessOperations getSimpleAccess() {
return null;
}
/**
* Returns an <code>IFileModificationValidator</code> for pre-checking operations
* that modify the contents of files.
* Returns <code>null</code> if the provider does not wish to participate in
* file modification validation.
*
* @see org.eclipse.core.resources.IFileModificationValidator
*/
public IFileModificationValidator getFileModificationValidator() {
return null;
}
/**
* Returns an <code>IMoveDeleteHook</code> for handling moves and deletes
* that occur withing projects managed by the provider. This allows providers
* to control how moves and deletes occur and includes the ability to prevent them.
* <p>
* Returning <code>null</code> signals that the default move and delete behavior is desired.
*
* @see org.eclipse.core.resources.IMoveDeleteHook
*/
public IMoveDeleteHook getMoveDeleteHook() {
return null;
}
/**
* Returns a brief description of this provider. The exact details of the
* representation are unspecified and subject to change, but the following
* may be regarded as typical:
*
* "SampleProject:org.eclipse.team.cvs.provider"
*
* @return a string description of this provider
*/
public String toString() {
return getProject().getName() + ":" + getID(); //$NON-NLS-1$
}
}
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