de.perdian.commons.i18n.polyglot.PolyglotInvocationHandler.java Source code

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Here is the source code for de.perdian.commons.i18n.polyglot.PolyglotInvocationHandler.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.i18n.polyglot;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.util.Locale;
import java.util.Map;

import org.springframework.context.MessageSource;

class PolyglotInvocationHandler implements InvocationHandler {

    private Locale locale = null;
    private MessageSource messageSource = null;
    private Map<Method, PolyglotInvocationInfo> infoMap = null;

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) {
        PolyglotInvocationInfo invocationInfo = this.getInfoMap() == null ? null : this.getInfoMap().get(method);
        if (invocationInfo == null) {
            throw new IllegalArgumentException("Cannot find polyglot information for method: " + method);
        } else {
            return this.invokeResolveMessage(invocationInfo, args);
        }
    }

    private String invokeResolveMessage(PolyglotInvocationInfo invocationInfo, Object[] args) {
        return this.getMessageSource().getMessage(invocationInfo.getKey(), args, invocationInfo.getDefaultValue(),
                this.getLocale());
    }

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

    Locale getLocale() {
        return this.locale;
    }

    void setLocale(Locale locale) {
        this.locale = locale;
    }

    MessageSource getMessageSource() {
        return this.messageSource;
    }

    void setMessageSource(MessageSource messageSource) {
        this.messageSource = messageSource;
    }

    Map<Method, PolyglotInvocationInfo> getInfoMap() {
        return this.infoMap;
    }

    void setInfoMap(Map<Method, PolyglotInvocationInfo> infoMap) {
        this.infoMap = infoMap;
    }

}