    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *     http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.jxpath.util;
    019
    020import java.util.HashMap;
    021
    022/**
    023 * Global type conversion utilities.
    024 */
    025public class TypeUtils {
    026
    027    private static TypeConverter typeConverter = new BasicTypeConverter();
    028    private static final HashMap<Class, Class> PRIMITIVE_TYPE_MAP = new HashMap<>();
    029    static {
    030        PRIMITIVE_TYPE_MAP.put(int.class, Integer.class);
    031        PRIMITIVE_TYPE_MAP.put(byte.class, Byte.class);
    032        PRIMITIVE_TYPE_MAP.put(short.class, Short.class);
    033        PRIMITIVE_TYPE_MAP.put(char.class, Character.class);
    034        PRIMITIVE_TYPE_MAP.put(long.class, Long.class);
    035        PRIMITIVE_TYPE_MAP.put(float.class, Float.class);
    036        PRIMITIVE_TYPE_MAP.put(double.class, Double.class);
    037        PRIMITIVE_TYPE_MAP.put(boolean.class, Boolean.class);
    038    }
    039
    040    /**
    041     * Returns true if the global converter can convert the supplied object to the specified type.
    042     *
    043     * @param object object to test
    044     * @param toType target class
    045     * @return boolean
    046     */
    047    public static boolean canConvert(final Object object, final Class toType) {
    048        return typeConverter.canConvert(object, toType);
    049    }
    050
    051    /**
    052     * Converts the supplied object to the specified type. May throw a RuntimeException.
    053     *
    054     * @param object object to convert
    055     * @param toType target class
    056     * @return resulting Object
    057     */
    058    public static Object convert(final Object object, final Class toType) {
    059        return typeConverter.convert(object, toType);
    060    }
    061
    062    /**
    063     * Returns the current type converter.
    064     *
    065     * @return TypeConverter
    066     */
    067    public static TypeConverter getTypeConverter() {
    068        return typeConverter;
    069    }
    070
    071    /**
    072     * Install an alternative type converter.
    073     *
    074     * @param converter new TypeConverter
    075     */
    076    public static synchronized void setTypeConverter(final TypeConverter converter) {
    077        typeConverter = converter;
    078    }
    079
    080    /**
    081     * Return the appropriate wrapper type for the specified class.
    082     *
    083     * @param p Class for which to retrieve a wrapper class.
    084     * @return the wrapper if {@code p} is primitive, else {@code p}.
    085     * @since JXPath 1.3
    086     */
    087    public static Class wrapPrimitive(final Class p) {
    088        return p.isPrimitive() ? (Class) PRIMITIVE_TYPE_MAP.get(p) : p;
    089    }
    090
    091    /**
    092     * Constructs a new instance.
    093     *
    094     * @deprecated Will be private in the next major version.
    095     */
    096    @Deprecated
    097    public TypeUtils() {
    098        // empty
    099    }
    100}