001/*
002 * Copyright (c) 2006-2012 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 *     Bogdan Stefanescu
011 *     Florent Guillaume
012 *     Nicolas Chapurlat <nchapurlat@nuxeo.com>
013 */
014package org.nuxeo.ecm.core.schema.types.primitives;
015
016import java.util.Calendar;
017import java.util.Date;
018
019import org.nuxeo.ecm.core.schema.types.PrimitiveType;
020import org.nuxeo.ecm.core.schema.types.constraints.Constraint;
021import org.nuxeo.ecm.core.schema.types.constraints.DateIntervalConstraint;
022import org.nuxeo.ecm.core.schema.types.constraints.NotNullConstraint;
023import org.nuxeo.ecm.core.schema.utils.DateParser;
024
025/**
026 * The date (actually timestamp) type.
027 */
028public class DateType extends PrimitiveType {
029
030    private static final long serialVersionUID = 1L;
031
032    public static final String ID = "date";
033
034    public static final DateType INSTANCE = new DateType();
035
036    public DateType() {
037        super(ID);
038    }
039
040    @Override
041    public boolean validate(Object object) {
042        return object instanceof Date || object instanceof Calendar;
043    }
044
045    @Override
046    public Object convert(Object value) {
047        if (value instanceof Date) {
048            return value;
049        } else if (value instanceof Calendar) {
050            return value;
051        } else {
052            // TODO
053            try {
054                return Integer.valueOf((String) value);
055            } catch (NumberFormatException e) {
056                return null;
057            }
058        }
059    }
060
061    @Override
062    public Object decode(String str) {
063        Date date = DateParser.parseW3CDateTime(str);
064        if (date != null) {
065            Calendar cal = Calendar.getInstance();
066            cal.setTime(date);
067            return cal;
068        }
069        return null;
070    }
071
072    @Override
073    public String encode(Object object) {
074        if (object instanceof Date) {
075            return DateParser.formatW3CDateTime((Date) object);
076        } else if (object instanceof Calendar) {
077            return DateParser.formatW3CDateTime(((Calendar) object).getTime());
078        } else {
079            return null;
080        }
081    }
082
083    protected Object readResolve() {
084        return INSTANCE;
085    }
086
087    @Override
088    public boolean support(Class<? extends Constraint> constraint) {
089        if (NotNullConstraint.class.equals(constraint)) {
090            return true;
091        }
092        if (DateIntervalConstraint.class.equals(constraint)) {
093            return true;
094        }
095        return false;
096    }
097
098}