com.talvish.tales.parts.translators.StringToDateTimeTranslator.java Source code

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Here is the source code for com.talvish.tales.parts.translators.StringToDateTimeTranslator.java

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// ***************************************************************************
// *  Copyright 2011 Joseph Molnar
// *
// *  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 com.talvish.tales.parts.translators;

import org.joda.time.DateTime;

public class StringToDateTimeTranslator extends StringToObjectTranslatorBase implements Translator {

    public StringToDateTimeTranslator() {
        this(true, null, null);
    }

    public StringToDateTimeTranslator(boolean shouldTrim, Object theEmptyValue, Object theNullValue) {
        super(shouldTrim, theEmptyValue, theNullValue);
    }

    @Override
    public Object translate(Object anObject) {
        Object returnValue;
        if (anObject == null) {
            returnValue = this.nullValue;
        } else {
            try {
                String stringValue = (String) anObject;

                if (this.trim) {
                    stringValue = stringValue.trim();
                }
                if (stringValue.equals("")) {
                    returnValue = this.emptyValue;
                } else {
                    returnValue = DateTime.parse(stringValue);
                }
            } catch (IllegalArgumentException e) {
                throw new TranslationException(String.format("Unable to translate '%s' into a datetime.", anObject),
                        e);
            } catch (ClassCastException e) {
                throw new TranslationException(e);
            }
        }
        return returnValue;
    }
}