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 *     Nuxeo - initial API and implementation
018 *
019 */
020
021package org.nuxeo.ecm.automation.core.util;
022
023import org.nuxeo.ecm.core.api.Blob;
024import org.nuxeo.ecm.core.api.Blobs;
025
026import com.fasterxml.jackson.databind.node.ObjectNode;
027
028/**
029 * Very basic implementation of a Blob decoder Only usable for StringBlobs
030 *
031 * @author Tiry (tdelprat@nuxeo.com)
032 * @since 5.5
033 */
034public class JSONStringBlobDecoder implements JSONBlobDecoder {
035    @Override
036    public Blob getBlobFromJSON(ObjectNode jsonObject) {
037        Blob blob;
038
039        String filename = null;
040        if (jsonObject.has("filename")) {
041            filename = jsonObject.get("filename").textValue();
042        }
043        if (filename == null && jsonObject.has("name")) {
044            filename = jsonObject.get("name").textValue();
045        }
046        String encoding = "UTF-8";
047        if (jsonObject.has("encoding")) {
048            encoding = jsonObject.get("encoding").textValue();
049        }
050
051        String mimetype = "text/plain";
052        if (jsonObject.has("mime-type")) {
053            mimetype = jsonObject.get("mime-type").textValue();
054        }
055        String data = null;
056        if (jsonObject.has("data")) {
057            data = jsonObject.get("data").textValue();
058            // try to avoid the bug NXP-18488: data contains the blob url
059            // and must not be recognized as a new blob content
060            if (data.startsWith("http")) {
061                data = null;
062            }
063        } else if (jsonObject.has("content")) {
064            data = jsonObject.get("content").textValue();
065        }
066        if (data == null) {
067            return null;
068        } else {
069            blob = Blobs.createBlob(data, mimetype, encoding, filename);
070        }
071        return blob;
072    }
073}