cn.newcapec.framework.core.utils.dataUtils.DateMorpherEx.java Source code

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Here is the source code for cn.newcapec.framework.core.utils.dataUtils.DateMorpherEx.java

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/*
 * Copyright 2006-2007 the original author or authors.
 *
 * 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.
 */

package cn.newcapec.framework.core.utils.dataUtils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import net.sf.ezmorph.MorphException;
import net.sf.ezmorph.object.AbstractObjectMorpher;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;

public class DateMorpherEx extends AbstractObjectMorpher {

    private Date defaultValue;
    private String[] formats;
    private boolean lenient;
    private Locale locale;

    public DateMorpherEx(String[] formats) {
        this(formats, Locale.getDefault(), false);
    }

    public DateMorpherEx(String[] formats, boolean lenient) {
        this(formats, Locale.getDefault(), lenient);
    }

    public DateMorpherEx(String[] formats, Date defaultValue) {
        this(formats, defaultValue, Locale.getDefault(), false);
    }

    public DateMorpherEx(String[] formats, Date defaultValue, Locale locale, boolean lenient) {
        super(true);
        if ((formats == null) || (formats.length == 0)) {
            throw new MorphException("invalid array of formats");
        }

        this.formats = formats;

        if (locale == null)
            this.locale = Locale.getDefault();
        else {
            this.locale = locale;
        }

        this.lenient = lenient;
        setDefaultValue(defaultValue);
    }

    public DateMorpherEx(String[] formats, Locale locale) {
        this(formats, locale, false);
    }

    public DateMorpherEx(String[] formats, Locale locale, boolean lenient) {
        if ((formats == null) || (formats.length == 0)) {
            throw new MorphException("invalid array of formats");
        }

        this.formats = formats;

        if (locale == null)
            this.locale = Locale.getDefault();
        else {
            this.locale = locale;
        }

        this.lenient = lenient;
    }

    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }

        if (!(obj instanceof DateMorpherEx)) {
            return false;
        }

        DateMorpherEx other = (DateMorpherEx) obj;
        EqualsBuilder builder = new EqualsBuilder();
        builder.append(this.formats, other.formats);
        builder.append(this.locale, other.locale);
        builder.append(this.lenient, other.lenient);
        if ((super.isUseDefault()) && (other.isUseDefault())) {
            builder.append(getDefaultValue(), other.getDefaultValue());
            return builder.isEquals();
        }
        if ((!super.isUseDefault()) && (!other.isUseDefault())) {
            return builder.isEquals();
        }
        return false;
    }

    public Date getDefaultValue() {
        if (this.defaultValue != null)
            return (Date) this.defaultValue.clone();
        else
            return this.defaultValue;
    }

    public int hashCode() {
        HashCodeBuilder builder = new HashCodeBuilder();
        builder.append(this.formats);
        builder.append(this.locale);
        builder.append(this.lenient);
        if (super.isUseDefault()) {
            builder.append(getDefaultValue());
        }
        return builder.toHashCode();
    }

    public Object morph(Object value) {
        if (value == null) {
            return null;
        }

        if (Date.class.isAssignableFrom(value.getClass())) {
            return (Date) value;
        }

        if (!supports(value.getClass())) {
            throw new MorphException(value.getClass() + " is not supported");
        }

        String strValue = (String) value;
        SimpleDateFormat dateParser = null;

        for (int i = 0; i < this.formats.length; ++i) {
            if (dateParser == null)
                dateParser = new SimpleDateFormat(this.formats[i], this.locale);
            else {
                dateParser.applyPattern(this.formats[i]);
            }
            dateParser.setLenient(this.lenient);
            try {
                return dateParser.parse(strValue.toLowerCase());
            } catch (ParseException localParseException) {
            }

        }

        if (super.isUseDefault()) {
            return this.defaultValue;
        }
        throw new MorphException("Unable to parse the date " + value);
    }

    public Class morphsTo() {
        return Date.class;
    }

    public void setDefaultValue(Date defaultValue) {
        if (defaultValue != null)
            this.defaultValue = ((Date) defaultValue.clone());
        else
            this.defaultValue = null;
    }

    public boolean supports(Class clazz) {
        return String.class.isAssignableFrom(clazz);
    }
}