de.perdian.commons.lang.conversion.impl.converters.AbstractFormatConverter.java Source code

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Here is the source code for de.perdian.commons.lang.conversion.impl.converters.AbstractFormatConverter.java

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/*
 * Copyright 2013 Christian Robert
 *
 * 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 de.perdian.commons.lang.conversion.impl.converters;

import java.text.Format;
import java.util.Locale;

import org.springframework.context.i18n.LocaleContext;
import org.springframework.core.convert.converter.Converter;

public abstract class AbstractFormatConverter<A, B, F extends Format> implements Converter<A, B> {

    private F format = null;
    private LocaleContext localeContext = null;

    @Override
    public B convert(A source) {

        Locale resolvedLocale = this.getLocaleContext() == null ? null : this.getLocaleContext().getLocale();
        Locale useLocale = resolvedLocale == null ? Locale.getDefault() : resolvedLocale;

        F internalFormat = this.getFormat();
        F useFormat = internalFormat == null ? this.resolveDefaultFormat(useLocale) : internalFormat;
        return this.convertUsingFormat(useFormat, source);

    }

    protected abstract B convertUsingFormat(F format, A source);

    protected abstract F resolveDefaultFormat(Locale locale);

    // -------------------------------------------------------------------------
    // --- Property access methods ---------------------------------------------
    // -------------------------------------------------------------------------

    public F getFormat() {
        return this.format;
    }

    public void setFormat(F format) {
        this.format = format;
    }

    public LocaleContext getLocaleContext() {
        return this.localeContext;
    }

    public void setLocaleContext(LocaleContext localeContext) {
        this.localeContext = localeContext;
    }

}