001/*
002 * (C) Copyright 2006-2018 Nuxeo (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 *     Bogdan Stefanescu
018 *     Florent Guillaume
019 *     Nicolas Chapurlat <nchapurlat@nuxeo.com>
020 */
021package org.nuxeo.ecm.core.schema.types.primitives;
022
023import static java.nio.charset.StandardCharsets.UTF_8;
024
025import java.io.ByteArrayInputStream;
026import java.io.IOException;
027import java.io.InputStream;
028
029import org.apache.commons.io.IOUtils;
030import org.apache.commons.lang3.StringUtils;
031import org.apache.commons.logging.Log;
032import org.apache.commons.logging.LogFactory;
033import org.nuxeo.ecm.core.schema.types.PrimitiveType;
034import org.nuxeo.ecm.core.schema.types.constraints.Constraint;
035import org.nuxeo.ecm.core.schema.types.constraints.NotNullConstraint;
036
037/**
038 * The binary type handles values of type InputStream.
039 */
040public final class BinaryType extends PrimitiveType {
041
042    private static final long serialVersionUID = 1L;
043
044    private static final Log log = LogFactory.getLog(BinaryType.class);
045
046    public static final String ID = "binary";
047
048    public static final BinaryType INSTANCE = new BinaryType();
049
050    private BinaryType() {
051        super(ID);
052    }
053
054    @Override
055    public boolean validate(Object object) {
056        return true;
057    }
058
059    @Override
060    public Object convert(Object value) {
061        if (value instanceof CharSequence) {
062            return new ByteArrayInputStream(value.toString().getBytes());
063        } else if (value instanceof byte[]) {
064            return new ByteArrayInputStream((byte[]) value);
065        } else if (value instanceof InputStream) {
066            return value;
067        }
068        return null;
069    }
070
071    public static Object parseString(String str) {
072        return new ByteArrayInputStream(str.getBytes());
073    }
074
075    protected Object readResolve() {
076        return INSTANCE;
077    }
078
079    @Override
080    public Object decode(String str) {
081        if (StringUtils.isEmpty(str)) {
082            return null;
083        }
084        return new ByteArrayInputStream(str.getBytes());
085    }
086
087    @Override
088    public String encode(Object object) {
089        if (object instanceof InputStream) {
090            try (InputStream in = (InputStream) object) {
091                return IOUtils.toString(in, UTF_8);
092            } catch (IOException e) {
093                log.error(e, e);
094                return null;
095            }
096        }
097        return object.toString();
098    }
099
100    @Override
101    public boolean support(Class<? extends Constraint> constraint) {
102        return NotNullConstraint.class.equals(constraint);
103    }
104
105}