001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 */
019package org.nuxeo.ecm.automation.core.operations;
020
021import org.nuxeo.ecm.automation.OperationContext;
022import org.nuxeo.ecm.automation.OperationException;
023import org.nuxeo.ecm.automation.core.Constants;
024import org.nuxeo.ecm.automation.core.annotations.Context;
025import org.nuxeo.ecm.automation.core.annotations.Operation;
026import org.nuxeo.ecm.automation.core.annotations.OperationMethod;
027import org.nuxeo.ecm.automation.core.annotations.Param;
028import org.nuxeo.ecm.core.api.Blob;
029
030/**
031 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
032 */
033@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.")
034public class RestoreBlobInput {
035
036    public static final String ID = "Context.RestoreBlobInput";
037
038    @Context
039    protected OperationContext ctx;
040
041    @Param(name = "name")
042    protected String name;
043
044    @OperationMethod
045    public Blob run() throws OperationException {
046        Object obj = ctx.get(name);
047        if (obj instanceof Blob) {
048            return (Blob) obj;
049        }
050        throw new OperationException(
051                "Illegal state error for restore file operation. The context map doesn't contains a file variable with name "
052                        + name);
053    }
054
055}