Java SQL Date convertTo(final Class> clazz, Object obj)

Description

convert To

License

Apache License

Declaration

public static Comparable<?> convertTo(final Class<Comparable<?>> clazz, Object obj) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c)2014 Prometheus Consulting
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License./*  w  w w. j  a  v  a2 s.  c  om*/
 *******************************************************************************/

import java.math.BigDecimal;

public class Main {
    public static Comparable<?> convertTo(final Class<Comparable<?>> clazz, Object obj) {
        if (obj == null) {
            return null;
        }
        if (clazz.isAssignableFrom(obj.getClass())) {
            return (Comparable<?>) obj;
        }
        final String oStr = String.valueOf(obj);
        if (clazz.equals(String.class)) {
            return oStr;
        }
        if (clazz.equals(Long.class) || clazz.equals(Long.TYPE)) {
            if (Number.class.isAssignableFrom(obj.getClass())) {
                return new Long(((Number) obj).longValue());
            }
            return Long.valueOf(oStr);
        }
        if (clazz.equals(Integer.class) || clazz.equals(Integer.TYPE)) {
            if (Number.class.isAssignableFrom(obj.getClass())) {
                return new Integer(((Number) obj).intValue());
            }
            return Integer.valueOf(oStr);
        }
        if (clazz.equals(Double.class) || clazz.equals(Double.TYPE)) {
            if (Number.class.isAssignableFrom(obj.getClass())) {
                return new Double(((Number) obj).doubleValue());
            }
            return Double.valueOf(oStr);
        }
        if (clazz.equals(Float.class) || clazz.equals(Float.TYPE)) {
            if (Number.class.isAssignableFrom(obj.getClass())) {
                return new Float(((Number) obj).floatValue());
            }
            return Float.valueOf(oStr);
        }
        if (clazz.equals(BigDecimal.class)) {
            return new BigDecimal(oStr);
        }
        if (clazz.equals(java.util.Date.class)) {
            return java.sql.Date.valueOf(oStr);
        }
        if (clazz.equals(java.sql.Date.class)) {
            return java.sql.Date.valueOf(oStr);
        }
        return null;
    }

    public static boolean equals(final Object o, final Object o1) {
        if (o == null && o1 == null) {
            return true;
        }
        if (o == null || o1 == null) {
            return false;
        }
        if (o instanceof Number && o1 instanceof Number) {
            return ((Number) o).doubleValue() == ((Number) o1).doubleValue();
        }
        return o.equals(o1);
    }
}

Related

1. calcThisMonth(String begin, String end, String now, GregorianCalendar calendar)
2. canConvert(Class clz)
3. convert(Class propertyType, Object value, String propertyName)
4. convert(Object o)
5. convertTo(Class clazz, Object obj)
6. getClasses()
7. getCurrDay()
8. getCurrentYear()
9. getDayOfPerMonth(String theDataStr)