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 org.apache.commons.lang.StringUtils;
017import org.nuxeo.ecm.core.schema.types.PrimitiveType;
018import org.nuxeo.ecm.core.schema.types.constraints.Constraint;
019import org.nuxeo.ecm.core.schema.types.constraints.EnumConstraint;
020import org.nuxeo.ecm.core.schema.types.constraints.NotNullConstraint;
021import org.nuxeo.ecm.core.schema.types.constraints.NumericIntervalConstraint;
022import org.nuxeo.ecm.core.schema.types.constraints.PatternConstraint;
023
024/**
025 * The integer type.
026 */
027public final class IntegerType extends PrimitiveType {
028
029    private static final long serialVersionUID = 1L;
030
031    public static final String ID = "integer";
032
033    public static final IntegerType INSTANCE = new IntegerType();
034
035    private IntegerType() {
036        super(ID);
037    }
038
039    @Override
040    public boolean validate(Object object) {
041        return object instanceof Number;
042    }
043
044    @Override
045    public Object convert(Object value) {
046        if (value instanceof Integer) {
047            return value;
048        } else if (value instanceof Number) {
049            return Integer.valueOf(((Number) value).intValue());
050        } else {
051            try {
052                return Integer.valueOf((String) value);
053            } catch (NumberFormatException e) {
054                return null;
055            }
056        }
057    }
058
059    @Override
060    public Object decode(String str) {
061        if (StringUtils.isEmpty(str)) {
062            return null;
063        }
064        try {
065            return Integer.valueOf(str);
066        } catch (NumberFormatException e) {
067            return Integer.valueOf(0);
068        }
069    }
070
071    @Override
072    public String encode(Object object) {
073        if (object instanceof Integer) {
074            return object.toString();
075        } else if (object instanceof Number) {
076            return object.toString();
077        } else {
078            return object != null ? (String) object : "";
079        }
080    }
081
082    protected Object readResolve() {
083        return INSTANCE;
084    }
085
086    @Override
087    public boolean support(Class<? extends Constraint> constraint) {
088        if (NotNullConstraint.class.equals(constraint)) {
089            return true;
090        }
091        if (EnumConstraint.class.equals(constraint)) {
092            return true;
093        }
094        if (PatternConstraint.class.equals(constraint)) {
095            return true;
096        }
097        if (NumericIntervalConstraint.class.equals(constraint)) {
098            return true;
099        }
100        return false;
101    }
102
103}