001/*
002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the Eclipse Public License v1.0
006 * which accompanies this distribution, and is available at
007 * http://www.eclipse.org/legal/epl-v10.html
008 *
009 * Contributors:
010 *     bstefanescu
011 */
012package org.nuxeo.ecm.automation.core.operations;
013
014import org.nuxeo.ecm.automation.OperationContext;
015import org.nuxeo.ecm.automation.OperationException;
016import org.nuxeo.ecm.automation.core.Constants;
017import org.nuxeo.ecm.automation.core.annotations.Context;
018import org.nuxeo.ecm.automation.core.annotations.Operation;
019import org.nuxeo.ecm.automation.core.annotations.OperationMethod;
020import org.nuxeo.ecm.automation.core.annotations.Param;
021import org.nuxeo.ecm.core.api.Blob;
022
023/**
024 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
025 */
026@Operation(id = RestoreBlobInput.ID, category = Constants.CAT_EXECUTION, label = "Restore File Input", description = "Restore the file input from a context variable given its name. Return the file.")
027public class RestoreBlobInput {
028
029    public static final String ID = "Context.RestoreBlobInput";
030
031    @Context
032    protected OperationContext ctx;
033
034    @Param(name = "name")
035    protected String name;
036
037    @OperationMethod
038    public Blob run() throws OperationException {
039        Object obj = ctx.get(name);
040        if (obj instanceof Blob) {
041            return (Blob) obj;
042        }
043        throw new OperationException(
044                "Illegal state error for restore file operation. The context map doesn't contains a file variable with name "
045                        + name);
046    }
047
048}