001/*
002 * (C) Copyright 2006-2016 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.core.api.model.impl.primitives;
020
021import java.io.ByteArrayInputStream;
022import java.io.IOException;
023import java.io.InputStream;
024import java.io.Serializable;
025
026import org.apache.commons.io.Charsets;
027import org.apache.commons.io.IOUtils;
028import org.nuxeo.ecm.core.api.model.InvalidPropertyValueException;
029import org.nuxeo.ecm.core.api.model.Property;
030import org.nuxeo.ecm.core.api.model.PropertyConversionException;
031import org.nuxeo.ecm.core.api.model.impl.ScalarProperty;
032import org.nuxeo.ecm.core.schema.types.Field;
033
034/**
035 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
036 */
037public class BinaryProperty extends ScalarProperty {
038
039    private static final long serialVersionUID = 1L;
040
041    public BinaryProperty(Property parent, Field field, int flags) {
042        super(parent, field, flags);
043    }
044
045    @Override
046    public boolean isNormalized(Object value) {
047        return value == null || value instanceof InputStream;
048    }
049
050    @Override
051    public Serializable normalize(Object value) throws PropertyConversionException {
052        if (isNormalized(value)) {
053            // TODO if input stream is not serializable? do we convert to a serializable input stream?
054            return (Serializable) value;
055        }
056        throw new PropertyConversionException(value.getClass(), InputStream.class);
057        // TODO byte array is not serializable
058        // if (value.getClass() == String.class) {
059        // return new ByteArrayInputStream(((String)value).getBytes());
060        // }
061        // if (value.getClass() == byte[].class) {
062        // return new ByteArrayInputStream((byte[])value.);
063        // }
064    }
065
066    @SuppressWarnings("unchecked")
067    @Override
068    public <T> T convertTo(Serializable value, Class<T> toType) throws PropertyConversionException {
069        if (value == null) {
070            return null;
071        }
072        if (InputStream.class.isAssignableFrom(toType)) {
073            return (T) value;
074        }
075        if (toType == String.class && value instanceof InputStream) {
076            try (InputStream in = (InputStream) value){
077                return (T) IOUtils.toString(in, Charsets.UTF_8);
078            } catch (IOException e) {
079                throw new InvalidPropertyValueException("Failed to read given input stream", e);
080            }
081        }
082        if (toType == byte[].class && value instanceof InputStream) {
083            try {
084                return (T) IOUtils.toByteArray((InputStream) value);
085            } catch (IOException e) {
086                throw new InvalidPropertyValueException("Failed to read given input stream", e);
087            }
088        }
089        throw new PropertyConversionException(value.getClass(), toType);
090    }
091
092    @Override
093    public Object newInstance() {
094        return new ByteArrayInputStream("".getBytes()); // TODO not serializable
095    }
096
097}