/*
* Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* bstefanescu
*/
package org.eclipse.ecr.automation.core.operations.stack;
import org.eclipse.ecr.automation.OperationContext;
import org.eclipse.ecr.automation.OperationException;
import org.eclipse.ecr.automation.core.Constants;
import org.eclipse.ecr.automation.core.annotations.Context;
import org.eclipse.ecr.automation.core.annotations.Operation;
import org.eclipse.ecr.automation.core.annotations.OperationMethod;
import org.eclipse.ecr.core.api.Blob;
/**
* @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
*/
@Operation(id = PullBlob.ID, category = Constants.CAT_EXECUTION_STACK, label = "Pull File", description = "Restore the last saved input file in the context input stack. This operation must be used only if a PUSH operation was previously made. Return the first <i>pushed</i> file.")
public class PullBlob {
public static final String ID = "Blob.Pull";
@Context
protected OperationContext ctx;
@OperationMethod
public Blob run() throws Exception {
Object obj = ctx.pull(Constants.O_BLOB);
if (obj instanceof Blob) {
return (Blob) obj;
}
throw new OperationException(
"Illegal state error for pull file operation. The context stack doesn't contains a file on its bottom");
}
}